Project

Back to overview

Search for New Physics and Measurements of Higgs boson properties with CMS

English title Search for New Physics and Measurements of Higgs boson properties with CMS
Applicant Wallny Rainer
Number 146398
Funding scheme Project funding
Research institution Institut für Teilchen- und Astrophysik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Particle Physics
Start/End 01.04.2013 - 31.03.2014
Approved amount 416'264.00
Show all

Keywords (6)

Pixel Detector Technology; CVD Diamond Detectors; Large Hadron Collider; Hadron Collider Physics ; Supersymmetry; Higgs Boson

Lay Summary (German)

Lead
Einige der wichtigsten wissenschaftlichen Fragen, denen das CMS Experiment am LHC des CERN nachgeht, ist die genauere experimentelle Charakterisierung des im Jahre 2012 gefundenden Higgsbosons sowie die Suche nach Physik jenseits des Standardmodells. Dieses Gesuch widmet sich diesen Fragen in drei Datenanalyse-Ansätzen. Weiterhin unterstützt dieses Gesuch den Upgrade einer Komponente des CMS Detektors, die im Jahre 2016 eingebaut werden wird.
Lay summary
Im Jahre 2012 haben die beiden grossen Experimente des Large Hadron Colliders (LHC) am europäischen Teilchenphysikforschungszentrums CERN das Higgsboson entdeckt. Eine wichtige Komponente dieses Gesuchs ist die genaue Bestimmung seiner Eigenschaften mittels des Compact Muon Solenoid (CMS) Experiments. Abweichungen von Eigenschaften des gefundenen Teilchens von denen im Standardmodell vorausgesagten würden einen indirekten Hinweis auf Physik jenseits des Standardmodells liefern. Eine weitere Komponente dieses Gesuchs ist die Suche nach einer direkten Manifestation neuer Physik in Form der Erzeugung supersymmetrischer Teilchen, die markante Zerfallsignaturen im Detektor hinterlassen. Eine von Forschern der ETH entwickelte Methode benutzt zum Nachweis der Supersymmetrie (SUSY) Leptonen unterschiedlicher Ladung, die zusammen mit einem Z-Boson erzeugt werden. Eine weitere Methode macht sich den Endzustand mit Leptonen gleicher Ladung zunutze, eine Signatur, die im Standardmodell nur selten vorkommt. Ein solcher seltener Standardmodell-Prozess ist die Produktion eines Top-Anti-Topquark-Paares zusammen mit einem Z- oder W-Boson. Dieser Prozess ist bisher noch nicht beobachtet worden, erste Anzeichen wurden im 7 TeV Datensatz des CMS Experimentes aber bereits gesehen. Dieser Prozess stellt einen wichtigen Untergrund zu den Suchen nach SUSY dar und ermöglicht stringente Tests des Standardmodells. Die Messung dieses Prozesses im 8 TeV Datensatz ist ein wichtiger dritter Bestandteil dieses Gesuches. Weiterhin unterstützt dieses Gesuch die Arbeit von ETH Wissenschaftlerinnen und Wissenschaftler am Upgrade des  CMS Barrel-Pixel-Detektors für die "Phase 1" Ausbauphase des LHC. Das abgedeckte Aufgabengebiet umfasst den Test des neuen Auslesechips (ROC) und Tests des Moduldesigns. Diese Arbeit wird in enger Zusammenarbeit mit Mitarbeitern des Paul-Scherrer-Instituts und der Unversität Zürich durchgeführt.
Direct link to Lay Summary Last update: 21.05.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
Alignment of the CMS tracker with LHC and cosmic ray data
Chatrchyan Serguei, others (2014), Alignment of the CMS tracker with LHC and cosmic ray data, in JINST, 9, 06009-06009.
Event activity dependence of Y(nS) production in $\sqrt{s_{NN}}$=5.02 TeV pPb and $\sqrts$=2.76 TeV pp collisions
Chatrchyan Serguei, others (2014), Event activity dependence of Y(nS) production in $\sqrt{s_{NN}}$=5.02 TeV pPb and $\sqrts$=2.76 TeV pp collisions, in JHEP, 04, 103-103.
Evidence for the 125 GeV Higgs boson decaying to a pair of $τ$ leptons
Chatrchyan Serguei, others (2014), Evidence for the 125 GeV Higgs boson decaying to a pair of $τ$ leptons, in JHEP, 1405, 104-104.
Inclusive search for a vector-like T quark with charge $\frac{2}{3}$ in pp collisions at $\sqrts$ = 8 TeV
Chatrchyan Serguei, others (2014), Inclusive search for a vector-like T quark with charge $\frac{2}{3}$ in pp collisions at $\sqrts$ = 8 TeV, in Phys.Lett., B729, 149-171.
Measurement of associated W + charm production in pp collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2014), Measurement of associated W + charm production in pp collisions at $\sqrts$ = 7 TeV, in JHEP, 1402, 013-013.
Measurement of four-jet production in proton-proton collisions at sqrt(s) = 7 TeV
Chatrchyan Serguei, others (2014), Measurement of four-jet production in proton-proton collisions at sqrt(s) = 7 TeV, in Phys.Rev., D89, 092010-092010.
Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states
Chatrchyan Serguei, others (2014), Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states, in JHEP, 1401, 096-096.
Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV
Chatrchyan Serguei, others (2014), Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV, in Phys.Rev., C89, 044906-044906.
Measurement of inclusive W and Z boson production cross sections in pp collisions at $\sqrts$ = 8 TeV
Chatrchyan Serguei, others (2014), Measurement of inclusive W and Z boson production cross sections in pp collisions at $\sqrts$ = 8 TeV, in Phys.Rev.Lett., 112, 191802-191802.
Measurement of the $t \bart$ production cross section in the dilepton channel in pp collisions at $\sqrts$ = 8 TeV
Chatrchyan Serguei, others (2014), Measurement of the $t \bart$ production cross section in the dilepton channel in pp collisions at $\sqrts$ = 8 TeV, in JHEP, 1402, 024-024.
Measurement of the properties of a Higgs boson in the four-lepton final state
Chatrchyan Serguei, others (2014), Measurement of the properties of a Higgs boson in the four-lepton final state, in Phys.Rev., D89, 092007-092007.
Measurement of the top-quark mass in all-jets $t\bart$ events in pp collisions at $\sqrts$=7 TeV
Chatrchyan Serguei, others (2014), Measurement of the top-quark mass in all-jets $t\bart$ events in pp collisions at $\sqrts$=7 TeV, in Eur.Phys.J., C74, 2758-2758.
Measurement of the triple-differential cross section for photon+jets production in proton-proton collisions at $\sqrts$=7 TeV
Chatrchyan Serguei, others (2014), Measurement of the triple-differential cross section for photon+jets production in proton-proton collisions at $\sqrts$=7 TeV, in JHEP, 1406, 009-009.
Measurement of the W gamma and Z gamma inclusive cross sections in pp collisions at $\sqrts$ = 7 TeV and limits on anomalous triple gauge boson couplings
Chatrchyan Serguei, others (2014), Measurement of the W gamma and Z gamma inclusive cross sections in pp collisions at $\sqrts$ = 7 TeV and limits on anomalous triple gauge boson couplings, in Phys.Rev., D89, 092005-092005.
Measurements of $t\bart$ spin correlations and top-quark polarization using dilepton final states in pp collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2014), Measurements of $t\bart$ spin correlations and top-quark polarization using dilepton final states in pp collisions at $\sqrts$ = 7 TeV, in Phys.Rev.Lett., 112, 182001-182001.
Measurements of the $t\bart$ charge asymmetry using the dilepton decay channel in pp collisions at $\sqrts =$ 7 TeV
Chatrchyan Serguei, others (2014), Measurements of the $t\bart$ charge asymmetry using the dilepton decay channel in pp collisions at $\sqrts =$ 7 TeV, in JHEP, 1404, 191-191.
Modification of jet shapes in PbPb collisions at $\sqrt {s_{NN}} = 2.76$ TeV
Chatrchyan Serguei, others (2014), Modification of jet shapes in PbPb collisions at $\sqrt {s_{NN}} = 2.76$ TeV, in Phys.Lett., B730, 243-263.
Observation of a peaking structure in the J/psi phi mass spectrum from B(+/-) to J/psi phi K(+/-) decays
Chatrchyan Serguei, others (2014), Observation of a peaking structure in the J/psi phi mass spectrum from B(+/-) to J/psi phi K(+/-) decays, in Phys.Lett., B734, 261-261.
Observation of the associated production of a single top quark and a W boson in pp collisions at sqrt(s) = 8 TeV
Chatrchyan Serguei, others (2014), Observation of the associated production of a single top quark and a W boson in pp collisions at sqrt(s) = 8 TeV, in Phys.Rev.Lett., 112, 231802-231802.
Search for baryon number violation in top-quark decays
Chatrchyan Serguei, others (2014), Search for baryon number violation in top-quark decays, in Phys.Lett., B731, 173-196.
Search for flavor-changing neutral currents in top-quark decays t to Zq in pp collisions at sqrt(s) = 8 TeV
Chatrchyan Serguei, others (2014), Search for flavor-changing neutral currents in top-quark decays t to Zq in pp collisions at sqrt(s) = 8 TeV, in Phys.Rev.Lett., 112, 171802-171802.
Search for new physics in events with same-sign dileptons and jets in pp collisions at $\sqrts$ = 8 TeV
Chatrchyan Serguei, others (2014), Search for new physics in events with same-sign dileptons and jets in pp collisions at $\sqrts$ = 8 TeV, in JHEP, 1401, 163-163.
Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at $\sqrts$ = 8 TeV
Chatrchyan Serguei, others (2014), Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at $\sqrts$ = 8 TeV, in Journal of High Energy Physics, 55.
Search for supersymmetry in pp collisions at $\sqrts$=8 TeV in events with a single lepton, large jet multiplicity, and multiple b jets
Chatrchyan Serguei, others (2014), Search for supersymmetry in pp collisions at $\sqrts$=8 TeV in events with a single lepton, large jet multiplicity, and multiple b jets, in Phys.Lett., B733, 328-353.
Search for the standard model Higgs boson produced in association with a W or a Z boson and decaying to bottom quarks
Chatrchyan Serguei, others (2014), Search for the standard model Higgs boson produced in association with a W or a Z boson and decaying to bottom quarks, in Phys.Rev., D89, 012003-012003.
Search for top squark and higgsino production using diphoton Higgs boson decays
Chatrchyan Serguei, others (2014), Search for top squark and higgsino production using diphoton Higgs boson decays, in Phys.Rev.Lett., 112, 161802-161802.
Search for top-quark partners with charge 5/3 in the same-sign dilepton final state
Chatrchyan Serguei, others (2014), Search for top-quark partners with charge 5/3 in the same-sign dilepton final state, in Phys.Rev.Lett., 112, 171801-171801.
Searches for light- and heavy-flavour three-jet resonances in pp collisions at $\sqrts = 8$ TeV
Chatrchyan Serguei, others (2014), Searches for light- and heavy-flavour three-jet resonances in pp collisions at $\sqrts = 8$ TeV, in Phys.Lett., B730, 193-214.
Studies of azimuthal dihadron correlations in ultra-central PbPb collisions at $\sqrt{s_{NN}} =$ 2.76 TeV
Chatrchyan Serguei, others (2014), Studies of azimuthal dihadron correlations in ultra-central PbPb collisions at $\sqrt{s_{NN}} =$ 2.76 TeV, in JHEP, 1402, 088-088.
Study of double parton scattering using W + 2-jet events in proton-proton collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2014), Study of double parton scattering using W + 2-jet events in proton-proton collisions at $\sqrts$ = 7 TeV, in JHEP, 1403, 032-032.
Angular analysis and branching fraction measurement of the decay $B^0 \to K^{*0} μ^+μ^-$
Chatrchyan Serguei, others (2013), Angular analysis and branching fraction measurement of the decay $B^0 \to K^{*0} μ^+μ^-$, in Phys.Lett., B727, 77-100.
Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at √s = 7 TeV
Chatrchyan Serguei, others (2013), Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at √s = 7 TeV, in JINST, 8, 09009-09009.
Event shapes and azimuthal correlations in $Z$ + jets events in $pp$ collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Event shapes and azimuthal correlations in $Z$ + jets events in $pp$ collisions at $\sqrts=7$ TeV, in Phys.Lett., B722, 238-261.
Identification of b-quark jets with the CMS experiment
Chatrchyan Serguei, others (2013), Identification of b-quark jets with the CMS experiment, in JINST, 8, 04013-04013.
Inclusive search for supersymmetry using the razor variables in $pp$ collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Inclusive search for supersymmetry using the razor variables in $pp$ collisions at $\sqrts=7$ TeV, in Phys.Rev.Lett., 111(8), 081802-081802.
Interpretation of Searches for Supersymmetry with simplified Models
Chatrchyan Serguei, others (2013), Interpretation of Searches for Supersymmetry with simplified Models, in Phys.Rev., D88(5), 052017-052017.
Jet and underlying event properties as a function of charged-particle multiplicity in proton–proton collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2013), Jet and underlying event properties as a function of charged-particle multiplicity in proton–proton collisions at $\sqrts$ = 7 TeV, in Eur.Phys.J., C73, 2674-2674.
Measurement of associated production of vector bosons and top quark-antiquark pairs at sqrt(s) = 7 TeV
Chatrchyan Serguei, others (2013), Measurement of associated production of vector bosons and top quark-antiquark pairs at sqrt(s) = 7 TeV, in Phys.Rev.Lett., 110, 172002-172002.
Measurement of differential top-quark pair production cross sections in $pp$ colisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Measurement of differential top-quark pair production cross sections in $pp$ colisions at $\sqrts=7$ TeV, in Eur.Phys.J., C73, 2339-2339.
Measurement of masses in the $t \bart$ system by kinematic endpoints in pp collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2013), Measurement of masses in the $t \bart$ system by kinematic endpoints in pp collisions at $\sqrts$ = 7 TeV, in Eur.Phys.J., C73, 2494-2494.
Measurement of neutral strange particle production in the underlying event in proton-proton collisions at sqrt(s) = 7 TeV
Chatrchyan Serguei, others (2013), Measurement of neutral strange particle production in the underlying event in proton-proton collisions at sqrt(s) = 7 TeV, in Phys.Rev., D88, 052001-052001.
Measurement of the $\Lambda_b^0$ lifetime in pp collisions at $\sqrts = 7$ TeV
Chatrchyan Serguei, others (2013), Measurement of the $\Lambda_b^0$ lifetime in pp collisions at $\sqrts = 7$ TeV, in JHEP, 07, 163-163.
Measurement of the $\Upsilon(1S), \Upsilon(2S)$, and $\Upsilon(3S)$ cross sections in pp collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2013), Measurement of the $\Upsilon(1S), \Upsilon(2S)$, and $\Upsilon(3S)$ cross sections in pp collisions at $\sqrts$ = 7 TeV, in Phys.Lett., B727, 101-125.
Measurement of the $t\bart$ production cross section in $pp$ collisions at $\sqrts=7$ TeV with lepton + jets final states
Chatrchyan Serguei, others (2013), Measurement of the $t\bart$ production cross section in $pp$ collisions at $\sqrts=7$ TeV with lepton + jets final states, in Phys.Lett., B720, 83-104.
Measurement of the $t\bart$ production cross section in the all-jet final state in pp collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2013), Measurement of the $t\bart$ production cross section in the all-jet final state in pp collisions at $\sqrts$ = 7 TeV, in JHEP, 1305, 065-065.
Measurement of the $W^+W^-$ Cross section in $pp$ Collisions at $\sqrts = 7$ TeV and Limits on Anomalous $WWγ$ and $WWZ$ couplings
Chatrchyan Serguei, others (2013), Measurement of the $W^+W^-$ Cross section in $pp$ Collisions at $\sqrts = 7$ TeV and Limits on Anomalous $WWγ$ and $WWZ$ couplings, in Eur.Phys.J., C73, 2610-2610.
Measurement of the $ZZ$ production cross section and search for anomalous couplings in 2 l2l ' final states in $pp$ collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Measurement of the $ZZ$ production cross section and search for anomalous couplings in 2 l2l ' final states in $pp$ collisions at $\sqrts=7$ TeV, in JHEP, 1301, 063-063.
Measurement of the B(s) to mu+ mu- branching fraction and search for B0 to mu+ mu- with the CMS Experiment
Chatrchyan Serguei, others (2013), Measurement of the B(s) to mu+ mu- branching fraction and search for B0 to mu+ mu- with the CMS Experiment, in Phys.Rev.Lett., 111, 101804-101804.
Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at $\sqrts =$ 7 TeV
Chatrchyan Serguei, others (2013), Measurement of the cross section and angular correlations for associated production of a Z boson with b hadrons in pp collisions at $\sqrts =$ 7 TeV, in JHEP, 1312, 039-039.
Measurement of the differential and double-differential Drell-Yan cross sections in proton-proton collisions at $\sqrts =$ 7 TeV
Chatrchyan Serguei, others (2013), Measurement of the differential and double-differential Drell-Yan cross sections in proton-proton collisions at $\sqrts =$ 7 TeV, in JHEP, 1312, 030-030.
Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2013), Measurement of the hadronic activity in events with a Z and two jets and extraction of the cross section for the electroweak production of a Z with two jets in pp collisions at $\sqrts$ = 7 TeV, in JHEP, 1310, 062-062.
Measurement of the inelastic proton-proton cross section at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Measurement of the inelastic proton-proton cross section at $\sqrts=7$ TeV, in Phys.Lett., B722, 5-27.
Measurement of the production cross section for $Zγ \to ν\bar{ν}γ$ in pp collisions at $\sqrts =$ 7 TeV and limits on $ZZγ$ and $Zγγ$ triple gauge boson couplings
Chatrchyan Serguei, others (2013), Measurement of the production cross section for $Zγ \to ν\bar{ν}γ$ in pp collisions at $\sqrts =$ 7 TeV and limits on $ZZγ$ and $Zγγ$ triple gauge boson couplings, in JHEP, 1310, 164-164.
Measurement of the prompt $J/ψ$ and $ψ$(2S) polarizations in pp collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2013), Measurement of the prompt $J/ψ$ and $ψ$(2S) polarizations in pp collisions at $\sqrts$ = 7 TeV, in Phys.Lett., B727, 381-402.
Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at $\sqrts$ = 7 TeV and first determination of the strong coupling constant in the TeV range
Chatrchyan Serguei, others (2013), Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at $\sqrts$ = 7 TeV and first determination of the strong coupling constant in the TeV range, in Eur.Phys.J., C73, 2604-2604.
Measurement of the sum of $W W$ and $WZ$ production with $W+$dijet events in $pp$ collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Measurement of the sum of $W W$ and $WZ$ production with $W+$dijet events in $pp$ collisions at $\sqrts=7$ TeV, in Eur.Phys.J., C73, 2283-2283.
Measurement of the top-antitop production cross section in the tau+jets channel in pp collisions at sqrt(s) = 7 TeV
Chatrchyan Serguei, others (2013), Measurement of the top-antitop production cross section in the tau+jets channel in pp collisions at sqrt(s) = 7 TeV, in Eur.Phys.J., C73, 2386-2386.
Measurement of the W-boson helicity in top-quark decays from $t\bart$ production in lepton+jets events in pp collisions at $\sqrts =$ 7 TeV
Chatrchyan Serguei, others (2013), Measurement of the W-boson helicity in top-quark decays from $t\bart$ production in lepton+jets events in pp collisions at $\sqrts =$ 7 TeV, in JHEP, 1310, 167-167.
Measurement of the X(3872) production cross section via decays to J/psi pi pi in pp collisions at sqrt(s) = 7 TeV
Chatrchyan Serguei, others (2013), Measurement of the X(3872) production cross section via decays to J/psi pi pi in pp collisions at sqrt(s) = 7 TeV, in JHEP, 1304, 154-154.
Measurement of W+W- and ZZ production cross sections in pp collisions at sqrt(s) = 8 TeV
Chatrchyan Serguei, others (2013), Measurement of W+W- and ZZ production cross sections in pp collisions at sqrt(s) = 8 TeV, in Phys.Lett., B721, 190-211.
Measurements of differential jet cross sections in proton-proton collisions at $\sqrts=7$ TeV with the CMS detector
Chatrchyan Serguei, others (2013), Measurements of differential jet cross sections in proton-proton collisions at $\sqrts=7$ TeV with the CMS detector, in Phys.Rev., D87(11), 112002-112002.
Multiplicity and transverse momentum dependence of two- and four-particle correlations in pPb and PbPb collisions
Chatrchyan Serguei, others (2013), Multiplicity and transverse momentum dependence of two- and four-particle correlations in pPb and PbPb collisions, in Phys.Lett., B724, 213-240.
Observation of a new boson with mass near 125 GeV in pp collisions at $\sqrts$ = 7 and 8 TeV
Chatrchyan Serguei, others (2013), Observation of a new boson with mass near 125 GeV in pp collisions at $\sqrts$ = 7 and 8 TeV, in JHEP, 1306, 081-081.
Probing color coherence effects in pp collisions at sqrt(s) = 7 TeV
Chatrchyan Serguei, others (2013), Probing color coherence effects in pp collisions at sqrt(s) = 7 TeV, in The European Physical Journal C, 2901.
Rapidity distributions in exclusive Z + jet and $γ$ + jet events in pp collisions at $\sqrts$=7 TeV
Chatrchyan Serguei, others (2013), Rapidity distributions in exclusive Z + jet and $γ$ + jet events in pp collisions at $\sqrts$=7 TeV, in Phys.Rev., D88, 112009-112009.
Search for $Z$ ' resonances decaying to $t\bart$ in dilepton+jets final states in $pp$ collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Search for $Z$ ' resonances decaying to $t\bart$ in dilepton+jets final states in $pp$ collisions at $\sqrts=7$ TeV, in Phys.Rev., D87, 072002-072002.
Search for a Higgs boson decaying into a b-quark pair and produced in association with b quarks in proton-proton collisions at 7 TeV
Chatrchyan Serguei, others (2013), Search for a Higgs boson decaying into a b-quark pair and produced in association with b quarks in proton-proton collisions at 7 TeV, in Phys.Lett., B722, 207-232.
Search for a Higgs boson decaying into a Z and a photon in pp collisions at $\sqrts$ = 7 and 8 TeV
Chatrchyan Serguei, others (2013), Search for a Higgs boson decaying into a Z and a photon in pp collisions at $\sqrts$ = 7 and 8 TeV, in Phys.Lett., B726, 587-609.
Search for a new bottomonium state decaying to $\Upsilon(1S)π^+π^-$ in pp collisions at $\sqrts$ = 8 TeV
Chatrchyan Serguei, others (2013), Search for a new bottomonium state decaying to $\Upsilon(1S)π^+π^-$ in pp collisions at $\sqrts$ = 8 TeV, in Phys.Lett., B727, 57-76.
Search for a non-standard-model Higgs boson decaying to a pair of new light bosons in four-muon final states
Chatrchyan Serguei, others (2013), Search for a non-standard-model Higgs boson decaying to a pair of new light bosons in four-muon final states, in Phys.Lett., B726, 564-586.
Search for a standard-model-like Higgs boson with a mass in the range 145 to 1000 GeV at the LHC
Chatrchyan Serguei, others (2013), Search for a standard-model-like Higgs boson with a mass in the range 145 to 1000 GeV at the LHC, in Eur.Phys.J., C73, 2469-2469.
Search for contact interactions in $μ^+μ^-$ events in $pp$ collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Search for contact interactions in $μ^+μ^-$ events in $pp$ collisions at $\sqrts=7$ TeV, in Phys.Rev., D87(3), 032001-032001.
Search for contact interactions using the inclusive jet $p_T$ spectrum in $pp$ collisions at $\sqrts = 7$ TeV
Chatrchyan Serguei, others (2013), Search for contact interactions using the inclusive jet $p_T$ spectrum in $pp$ collisions at $\sqrts = 7$ TeV, in Phys.Rev., D87(5), 052017-052017.
Search for exotic resonances decaying into $WZ/ZZ$ in $pp$ collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Search for exotic resonances decaying into $WZ/ZZ$ in $pp$ collisions at $\sqrts=7$ TeV, in JHEP, 1302, 036-036.
Search for heavy narrow dilepton resonances in $pp$ collisions at $\sqrts=7$ TeV and $\sqrts=8$ TeV
Chatrchyan Serguei, others (2013), Search for heavy narrow dilepton resonances in $pp$ collisions at $\sqrts=7$ TeV and $\sqrts=8$ TeV, in Phys.Lett., B720, 63-82.
Search for heavy quarks decaying into a top quark and a $W$ or $Z$ boson using lepton + jets events in $pp$ collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2013), Search for heavy quarks decaying into a top quark and a $W$ or $Z$ boson using lepton + jets events in $pp$ collisions at $\sqrts$ = 7 TeV, in JHEP, 1301, 154-154.
Search for heavy resonances in the W/Z-tagged dijet mass spectrum in pp collisions at 7 TeV
Chatrchyan Serguei, others (2013), Search for heavy resonances in the W/Z-tagged dijet mass spectrum in pp collisions at 7 TeV, in Phys.Lett., B723, 280-301.
Search for long-lived particles decaying to photons and missing energy in proton-proton collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Search for long-lived particles decaying to photons and missing energy in proton-proton collisions at $\sqrts=7$ TeV, in Phys.Lett., B722, 273-294.
Search for microscopic black holes in pp collisions at sqrt(s) = 8 TeV
Chatrchyan Serguei, others (2013), Search for microscopic black holes in pp collisions at sqrt(s) = 8 TeV, in JHEP, 1307, 178-178.
Search for narrow resonances using the dijet mass spectrum in pp collisions at $\sqrts$=8  TeV
Chatrchyan Serguei, others (2013), Search for narrow resonances using the dijet mass spectrum in pp collisions at $\sqrts$=8  TeV, in Phys.Rev., D87(11), 114015-114015.
Search for new physics in events with photons, jets, and missing transverse energy in $pp$ collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Search for new physics in events with photons, jets, and missing transverse energy in $pp$ collisions at $\sqrts=7$ TeV, in JHEP, 1303, 111-111.
Search for new physics in events with same-sign dileptons and $b$ jets in $pp$ collisions at $\sqrts=8$ TeV
Chatrchyan Serguei, others (2013), Search for new physics in events with same-sign dileptons and $b$ jets in $pp$ collisions at $\sqrts=8$ TeV, in JHEP, 1303, 037-037.
Search for new physics in final states with a lepton and missing transverse energy in pp collisions at the LHC
Chatrchyan Serguei, others (2013), Search for new physics in final states with a lepton and missing transverse energy in pp collisions at the LHC, in Phys.Rev., D87(7), 072005-072005.
Search for pair production of third-generation leptoquarks and top squarks in $pp$ collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Search for pair production of third-generation leptoquarks and top squarks in $pp$ collisions at $\sqrts=7$ TeV, in Phys.Rev.Lett., 110, 081801-081801.
Search for pair-produced dijet resonances in four-jet final states in pp collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2013), Search for pair-produced dijet resonances in four-jet final states in pp collisions at $\sqrts$ = 7 TeV, in Phys.Rev.Lett., 110, 141802-141802.
Search for physics beyond the standard model in events with $τ$ leptons, jets, and large transverse momentum imbalance in pp collisions at $\sqrts$ = 7 TeV
Chatrchyan Serguei, others (2013), Search for physics beyond the standard model in events with $τ$ leptons, jets, and large transverse momentum imbalance in pp collisions at $\sqrts$ = 7 TeV, in Eur.Phys.J., C73, 2493-2493.
Search for supersymmetry in $pp$ collisions at $\sqrts=7$ TeV in events with a single lepton, jets, and missing transverse momentum
Chatrchyan Serguei, others (2013), Search for supersymmetry in $pp$ collisions at $\sqrts=7$ TeV in events with a single lepton, jets, and missing transverse momentum, in Eur.Phys.J., C73, 2404-2404.
Search for supersymmetry in events with opposite-sign dileptons and missing transverse energy using an artificial neural network
Chatrchyan Serguei, others (2013), Search for supersymmetry in events with opposite-sign dileptons and missing transverse energy using an artificial neural network, in Phys.Rev., D87, 072001-072001.
Search for supersymmetry in final states with a single lepton, $b$-quark jets, and missing transverse energy in proton-proton collisions at $\sqrts=7$ TeV
Chatrchyan Serguei, others (2013), Search for supersymmetry in final states with a single lepton, $b$-quark jets, and missing transverse energy in proton-proton collisions at $\sqrts=7$ TeV, in Phys.Rev., D87(5), 052006-052006.
Search for supersymmetry in final states with missing transverse energy and 0, 1, 2, or at least 3 b-quark jets in 7 TeV pp collisions using the variable alphaT
Chatrchyan Serguei, others (2013), Search for supersymmetry in final states with missing transverse energy and 0, 1, 2, or at least 3 b-quark jets in 7 TeV pp collisions using the variable alphaT, in JHEP, 1301, 077-077.
Search for supersymmetry in hadronic final states with missing transverse energy using the variables $α_T$ and b-quark multiplicity in pp collisions at $\sqrt s=8$ TeV
Chatrchyan Serguei, others (2013), Search for supersymmetry in hadronic final states with missing transverse energy using the variables $α_T$ and b-quark multiplicity in pp collisions at $\sqrt s=8$ TeV, in Eur.Phys.J., C73, 2568-2568.
Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC
Chatrchyan Serguei, others (2013), Search for the standard model Higgs boson produced in association with a top-quark pair in pp collisions at the LHC, in JHEP, 1305, 145-145.
Search for top squarks in $R$-parity-violating supersymmetry using three or more leptons and b-tagged jets
Chatrchyan Serguei, others (2013), Search for top squarks in $R$-parity-violating supersymmetry using three or more leptons and b-tagged jets, in Phys.Rev.Lett., 111(22), 221801-221801.
Search for top-squark pair production in the single-lepton final state in pp collisions at $\sqrts$ = 8 TeV
Chatrchyan Serguei, others (2013), Search for top-squark pair production in the single-lepton final state in pp collisions at $\sqrts$ = 8 TeV, in Eur.Phys.J., C73, 2677-2677.
Search in leptonic channels for heavy resonances decaying to long-lived neutral particles
Chatrchyan Serguei, others (2013), Search in leptonic channels for heavy resonances decaying to long-lived neutral particles, in JHEP, 1302, 085-085.
Searches for Higgs bosons in pp collisions at sqrt(s) = 7 and 8 TeV in the context of four-generation and fermiophobic models
Chatrchyan Serguei, others (2013), Searches for Higgs bosons in pp collisions at sqrt(s) = 7 and 8 TeV in the context of four-generation and fermiophobic models, in Phys.Lett., B725, 36-59.
Searches for long-lived charged particles in pp collisions at $\sqrts$=7 and 8 TeV
Chatrchyan Serguei, others (2013), Searches for long-lived charged particles in pp collisions at $\sqrts$=7 and 8 TeV, in JHEP, 1307, 122-122.
Searches for new physics using the $t\bart$ invariant mass distribution in pp collisions at $\sqrts$=8  TeV
Chatrchyan Serguei, others (2013), Searches for new physics using the $t\bart$ invariant mass distribution in pp collisions at $\sqrts$=8  TeV, in Phys.Rev.Lett., 111(21), 211804-211804.
Studies of jet mass in dijet and W/Z + jet events
Chatrchyan Serguei, others (2013), Studies of jet mass in dijet and W/Z + jet events, in JHEP, 1305, 090-090.
Study of exclusive two-photon production of $W^+W^-$ in $pp$ collisions at $\sqrts = 7$ TeV and constraints on anomalous quartic gauge couplings
Chatrchyan Serguei, others (2013), Study of exclusive two-photon production of $W^+W^-$ in $pp$ collisions at $\sqrts = 7$ TeV and constraints on anomalous quartic gauge couplings, in JHEP, 1307, 116-116.
Study of the Mass and Spin-Parity of the Higgs Boson Candidate Via Its Decays to Z Boson Pairs
Chatrchyan Serguei, others (2013), Study of the Mass and Spin-Parity of the Higgs Boson Candidate Via Its Decays to Z Boson Pairs, in Phys.Rev.Lett., 110, 081803-081803.
Study of the production of charged pions, kaons, and protons in pPb collisions at sqrt(sNN) = 5.02 TeV
Chatrchyan Serguei, others (2013), Study of the production of charged pions, kaons, and protons in pPb collisions at sqrt(sNN) = 5.02 TeV, in The European Physical Journal C, 2847.
Study of the underlying event at forward rapidity in pp collisions at $\sqrts$ = 0.9, 2.76, and 7 TeV
Chatrchyan Serguei, others (2013), Study of the underlying event at forward rapidity in pp collisions at $\sqrts$ = 0.9, 2.76, and 7 TeV, in JHEP, 1304, 072-072.
The performance of the CMS muon detector in proton-proton collisions at sqrt(s) = 7 TeV at the LHC
Chatrchyan Serguei, others (2013), The performance of the CMS muon detector in proton-proton collisions at sqrt(s) = 7 TeV at the LHC, in JINST, 8, 11002-11002.

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Boston Jet Workshop: Second Annual Boston Jet Physics Workshop Talk given at a conference Quark/Gluon Discrimination and Pileup in CMS 21.01.2014 Boston, United States of America Pandolfi Francesco;
Joint Annual meeting of APS and SPS: Joint Annual Meeting of OEPG, SPG, OEGAA and SGAA, 3-6 Sep 2013, Johannes Kepler University Talk given at a conference LHC - the first three years 05.09.2013 Linz, Austria Wallny Rainer;
9th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors Talk given at a conference Qualification of the CMS pixel readout chip for the phase 1 upgrade 04.09.2013 Hiroshima, Japan Rossini Marco Milan;
Joint Annual meeting of APS and SPS: Joint Annual Meeting of OEPG, SPG, OEGAA and SGAA, 3-6 Sep 2013, Johannes Kepler University Individual talk Search for a Higgs Boson produced in association with a W or Z bosons, and decaying into bottom quarks at CMS 03.09.2013 Linz, Austria Eller Philipp;
Higgs Hunting 2013 Talk given at a conference Search for Higgs bosons produced in association with W or Z bosons, and decaying to bottom quarks at CMS 26.07.2013 Paris, France Eller Philipp;
Lepton Photon Conference 2013 Talk given at a conference Search for a Higgs-like boson decaying into bottom quarks 24.06.2013 Stanford, United States of America Grab Christophorus;
LHCP 2013: Large Hadron Collider Physics Conference, 13-18 May 2013, IFAE (Institut de Fisica d'Altes Energies) Talk given at a conference Search for a Higgs-like boson decaying into bottom quarks in the ZH channel 13.05.2013 Barcelona, Spain Eller Philipp;


Communication with the public

Communication Title Media Place Year
Media relations: radio, television Media Event Novel Prize in Physics SRF German-speaking Switzerland 2013

Associated projects

Number Title Start Funding scheme
149870 Physics at 13-14 TeV with the CMS experiment at the LHC 01.10.2013 Project funding
138111 Search for New Physics with the CMS experiment at LHC 01.10.2011 Project funding
147466 FLARE Request: Operation, Computing and Upgrades of the CMS Experiment 01.04.2013 FLARE
141547 FORCE: Maintenance & Operation for the LHC Experiments 2012 01.04.2012 FORCE / CERN
153664 Measurements of Higgs boson properties and Searches for Supersymmetry with CMS 01.04.2014 Project funding
154216 FLARE 2014-16: Operation, Computing and Upgrades of the CMS Experiment 01.04.2014 FLARE
141289 FORCE - Support for CMS Tier-3 Analysis Facility 01.04.2012 FORCE / CERN
141279 FORCE Request: Operation and Upgrade of the CMS Barrel Pixel Detector 01.06.2012 FORCE / CERN
134939 High pT Physics with CMS and Upgrades of the CMS Barrel Pixel Detector 01.04.2011 Project funding
141290 FORCE - GRID Infrastructure for LHC Experiments 01.04.2012 FORCE / CERN
141092 Particle Physics at the Large Hadron Collider (LHC) 01.04.2012 Project funding
153664 Measurements of Higgs boson properties and Searches for Supersymmetry with CMS 01.04.2014 Project funding
166294 Characterization of the Higgs Boson and Searches for Supersymmetry with CMS 01.04.2016 Project funding

Abstract

This request proposes research to be conducted with the Compact Muon Solenoid (CMS) experiment operating at the Large Hadron Collider (LHC) at the European Center for Particle Physics (CERN). This proposal attacks fundamental questions of experimental particle physics in a three-fold manner. We will attempt to firmly establish the existence of the Higgs boson decaying into two b-quarks using the production mode in association with a vector boson (W or Z). This process allows the extraction of the couplings of the Higgs boson to b-quarks and W or Z-bosons as well as a determination of the spin and parity of the newly found particle. We continue the search for SUSY using the dilepton final state, employing a kinematic method (Jet-Z-balancing) for leptons of opposite charge sign to estimate SM backgrounds from data. The search for SUSY in the like-sign dilepton final state is not only sensitive to the production of SUSY particles via the strong force, but with a suitable optimization is also sensitive to electroweak SUSY production, a channel which becomes important if the mass hierarchy for SUSY squarks and gluinos is beyond the energy reach of the present LHC running at 8 TeV center of mass (CM) energy. A SM background for the dilepton SUSY searches previously not measured is the production of a top-anti-top quark pair in association with a vector boson (W or Z). Scientists of thisproposal have made a successful first measurement of this process at a LHC CM energy of 7 TeV and we propose to improve this measurement using the 8 TeV data set. Our proposal further requests support to continue hardware work for the upgrades of one of the key components of the CMS detector, the barrel pixel detector (BPIX), foreseen for the year 2016 (phase 1) and around 2021 (phase 2). The barrel pixel detector is a key component for b-jet identification needed in the physics program described above. These upgrades are necessitated by the ever increasing improvements and planned upgrades of the LHC. Recently, the CMS phase 1 upgrade program presented in a CMS Technical Design Report wasfavorably evaluated by the Large Hadron Collider Committee (LHCC). Within CMS several consortia have formed to collaborate on the phase 1 upgrade, with ETH Z¨urich, PSI and University of Zurich building the Swiss consortium. The role of the ETH Zurich group within the Swiss consortium will be the important task of module testing.
-