Project

Back to overview

Perturbative computations in gauge theories for collider experiments

Applicant Anastasiou Charalampos
Number 126632
Funding scheme Project funding (Div. I-III)
Research institution Institut für Theoretische Physik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Theoretical Physics
Start/End 01.10.2009 - 30.09.2012
Approved amount 423'225.00
Show all

All Disciplines (2)

Discipline
Theoretical Physics
Particle Physics

Keywords (9)

Theory of Elementary Particles; Quantum Chromodynamics; Perturbative Calculations; Higgs boson physics; Supersymetric Yang-Mills theories; Models in extra dimensions; Particle phenomenology; pertubative methods; Higgs physics

Lay Summary (English)

Lead
Lay summary
We study the phenomenology of the Standard Model and viable extensions at hadron colliders. We develop methods for accurate theoretical predictions, taking into account important radiative e ects. The main objectives can be summarized as follows. 1. MULTI-PARTON PRODUCTIONDevelop innovative methods for multi-parton production including virtual and real radiative effects. This incorporates analytic and numerical methods for the automated evaluation of one-loop amplitudes of arbitrary processes in the SM and extensions of the SM at the parton level.2. HIGH PRECISION THEORETICAL PREDICTIONS AT NNLO Develop further modern methods for fully di erential calculations at next-to-next-to-leading-order (NNLO) in QCD perturbative expansions, and obtain precise predictions for processes where next-to-leading- order (NLO) accuracy is not sufficient. This includes Higgs boson production and decay, jet production, top-quark production and decay, muon decay, and decays of the B-meson.3. LOOP AMPLITUDES IN SUPERSYMMETRIC YANG MILLS THEORIES AND QCD FACTORIZATIONStudy multi-loop amplitudes in Yang Mills theories with extended unbroken supersymmetry. This includes proofs of striking factorization conjectures, and examining their implications for the solvability of Yang-Mills theories with extended supersymmetry. We also study the factorization properties of QCD amplitudes and resummation of logarithmic contributions. This includes the proof or disproof of conjectures for the functional form of universal infrared singularities using powerful computational methods.4. COMPOSITE HIGGS MODELS AND MODELS IN EXTRA DIMENSIONS Study the symmetry breaking patterns in composite Higgs models and their analogs with extra dimensions, as well as their combatibility with electroweak precision tests and available experimental data. Distinguishing a Standard Model Higgs boson from a composite Higgs boson.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
Implications of QCD radiative corrections on high-pT Higgs searches
Banfi Andrea, Cancino Julian (2012), Implications of QCD radiative corrections on high-pT Higgs searches, in High Energy Physics, 499.
Inclusive Higgs boson cross-section for the LHC at 8 TeV
Anastasiou C, Buehler S, Herzog F, Lazopoulos A (2012), Inclusive Higgs boson cross-section for the LHC at 8 TeV, in JOURNAL OF HIGH ENERGY PHYSICS, (4), 4.
The Fully di erential hadronic production of a Higgs boson via bottom quark fusion at NNLO
Bühler Stephan, Herzog Franz, Lazopoulos Achilleas, Müller Romain (2012), The Fully di erential hadronic production of a Higgs boson via bottom quark fusion at NNLO, in High Energy Physics, 115.
Probing the low transverse momentum domain of Z production with novel variables
Banfi Andrea, Dasgupta Mrinal, Marzani Simone, Tomlinson Lee (2012), Probing the low transverse momentum domain of Z production with novel variables, in High Energy Physics, 44.
Total cross-section for Higgs boson hadroproduction with anomalous Standard-Model interactions
Anastasiou C, Buehler S, Herzog F, Lazopoulos A (2011), Total cross-section for Higgs boson hadroproduction with anomalous Standard-Model interactions, in JOURNAL OF HIGH ENERGY PHYSICS, (12), 58.
NNLO phase space master integrals for two-to-one inclusive cross sections in dimensional regularization
Anastasiou Charalampos, Bühler Stephan, Duhr Claude, Herzog Franz (2011), NNLO phase space master integrals for two-to-one inclusive cross sections in dimensional regularization, in High Energy Physics, 44.
The discrete composite Higgs model
Panico G, Wulzer A (2011), The discrete composite Higgs model, in JOURNAL OF HIGH ENERGY PHYSICS, (9), 135.
Higgs production cross-section in a Standard Model with four generations at the LHC
Anastasiou C, Buehler S, Furlan E, Herzog F, Lazopoulos A (2011), Higgs production cross-section in a Standard Model with four generations at the LHC, in PHYSICS LETTERS B, 702(4), 224-227.
QCD predictions for new variables to study dilepton transverse momenta at hadron colliders
Banfi A, Dasgupta M, Marzani S (2011), QCD predictions for new variables to study dilepton transverse momenta at hadron colliders, in PHYSICS LETTERS B, 701(1), 75-81.
On the factorization of overlapping singularities at NNLO
Anastasiou C, Herzog F, Lazopoulos A (2011), On the factorization of overlapping singularities at NNLO, in JOURNAL OF HIGH ENERGY PHYSICS, (3), 38.
Loop lessons from Wilson loops in N=4 supersymmetric Yang-Mills theory
Anastasiou C, Banfi A (2011), Loop lessons from Wilson loops in N=4 supersymmetric Yang-Mills theory, in JOURNAL OF HIGH ENERGY PHYSICS, (2), 64.
Simple and Realistic Composite Higgs Models in Flat Extra Dimensions
Panico Giuliano, Safari Mahmoud, Serone Marco (2011), Simple and Realistic Composite Higgs Models in Flat Extra Dimensions, in High Energy Physics, 103.
Probing the low transverse momentum domain of Z production with novel variables
{Banfi} A., {Dasgupta} M., {Marzani} S., {Tomlinson} L. (2011), Probing the low transverse momentum domain of Z production with novel variables, in ArXiv e-prints, 44.
QCD predictions for new variables to study dilepton transverse momenta at hadron colliders
{Banfi} A., {Dasgupta} M., {Marzani} S. (2011), QCD predictions for new variables to study dilepton transverse momenta at hadron colliders, in Physics Letters B, 701, 6.
The discrete composite Higgs model
{Panico} G., {Wulzer} A. (2011), The discrete composite Higgs model, in Journal of High Energy Physics, 9, 5.
The fully differential decay rate of a Higgs boson to bottom-quarks at NNLO in QCD
Anastasiou C., Herzog F., Lazopoulos A. (2011), The fully differential decay rate of a Higgs boson to bottom-quarks at NNLO in QCD, in ArXiv e-prints, 35.

Associated projects

Number Title Start Funding scheme
117873 Perturbative computations in gauge theories for collider experiments 01.10.2007 Project funding (Div. I-III)
143781 Higgs and Drell-Yan production at NNNLO in QCD 01.10.2012 Project funding (Div. I-III)

Abstract

We study the phenomenology of the Standard Model and viable extensions at hadron colliders. We develop new methods for accurate theoretical predictions, taking into account important radiative effects. The objectives are cross-sections for complicated processes with many particles in final state, cross sections for the Higgs bosson, loop amplitudes in supersymmetric theories and physics predictions with models in extra dimensions.
-