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Matter, Forces and the Universe

Applicant Antusch Stefan
Number 175502
Funding scheme Project funding (Div. I-III)
Research institution Departement Physik Universität Basel
Institution of higher education University of Basel - BS
Main discipline Particle Physics
Start/End 01.10.2017 - 30.09.2021
Approved amount 1'000'000.00
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All Disciplines (3)

Discipline
Particle Physics
Astronomy, Astrophysics and Space Sciences
Theoretical Physics

Keywords (2)

Early universe cosmology; Neutrino physics

Lay Summary (German)

Lead
Ziel des Projekts "Matter, Forces and the Universe" ist es, einen Beitrag zur Entwicklung einer fundamentaleren Theorie der Elementarteilchen und der Kosmologie zu leisten, welche die offenen Fragen der gegenwärtigen Modelle löst. Zudem wird untersucht, wie eine solche Theorie in laufenden und zukünftigen Experimenten getestet werden kann.
Lay summary

Was ist die fundamentale Theorie der Materie, der Kräfte und des Universums? Diese Frage bildet die Motivation für die Forschung im Gebiet der theoretischen und experimentellen Elementarteilchenphysik und Kosmologie. Der aktuelle Wissensstand wird beschrieben durch das sogenannte "Standardmodell" der Elementarteilchen und das "Concordance Model" in der Kosmologie.

Trotz der grossen Erfolge dieser Modelle bleiben viele Fragen unbeantwortet:

Beispielsweise sind die experimentell beobachteten Neutrinomassen nicht mit dem "Standardmodell" der Elementarteilchen verträglich, und es ist noch unbekannt wie die aktuelle Theorie erweitert werden muss um die Eigenschaften der Neutrinos richtig zu beschreiben. Einer der Schwerpunkte des Projekts ist es deshalb herauszufinden, wie mögliche Theorie-Erweiterungen zur Erklärung der Neutrinomassen am LHC und an geplanten zukünftigen Teilchenbeschleunigern getestet werden können.    

In der Kosmologie sind viele offene Fragen mit der Frühphase der Entwicklung des Universums verknüpft, in der die Grundvoraussetzungen für das heutige Universum gelegt werden, wie beispielsweise die Materie-Antimaterie Asymmetrie und die relative Flachheit des Universums. Ein möglicher Schlüssel zum besseren Verständnis dieser Frühphase sind die nach dem Ende der kosmischen Inflation erzeugten Gravitationswellen, die Aufschluss über die Dynamik der zu dieser Zeit vorherrschenden Teilchenfelder geben können. 

Die Frühphase des Universums findet bei Energien statt, bei denen die Beschreibung der drei Standardmodell-Kräfte zwischen den Elementarteilchen im Rahmen einer fundamentaleren "Vereinigten Theorie" möglich ist. Es ist ein weiterer Schwerpunkt des Projekts, solche "Vereinigte Elementarteilchentheorien" weiterzuentwickeln, um sie mit den aktuellen experimentellen Daten in Einklang zu bringen, und sie auf die offenen Fragen der Kosmologie anzuwenden.

Basierend auf dem Zusammenspiel zwischen Theorie und Experiment ist das langfristige Ziel die Zusammenführung der Modelle der Elementarteilchenphysik und der Kosmologie. 

 
Direct link to Lay Summary Last update: 22.11.2017

Responsible applicant and co-applicants

Employees

Publications

Publication
Lepton-trijet and displaced vertex searches for heavy neutrinos at future electron-proton colliders
Antusch Stefan, Fischer Oliver, Hammad A. (2020), Lepton-trijet and displaced vertex searches for heavy neutrinos at future electron-proton colliders, in Journal of High Energy Physics, 2020(3), 110-110.
Dark matter spin characterization in mono- Z channels
Abdallah W., Hammad A., Khalil S., Moretti S. (2019), Dark matter spin characterization in mono- Z channels, in Physical Review D, 100(9), 095006-095006.
Long-lived particles at the energy frontier: the MATHUSLA physics case
Curtin David, Drewes Marco, McCullough Matthew, Meade Patrick, Mohapatra Rabindra N, Shelton Jessie, Shuve Brian, Accomando Elena, Alpigiani Cristiano, Antusch Stefan, Carlos Arteaga-Velázquez Juan, Batell Brian, Bauer Martin, Blinov Nikita, Salomé Caballero-Mora Karen, Hyeok Chang Jae, Chun Eung Jin, Co Raymond T, Cohen Timothy, Cox Peter, Craig Nathaniel, Csáki Csaba, Cui Yanou, D’Eramo Francesco, et al. (2019), Long-lived particles at the energy frontier: the MATHUSLA physics case, in Reports on Progress in Physics, 82(11), 116201-116201.
Properties of oscillons in hilltop potentials: energies, shapes, and lifetimes
Antusch Stefan, Cefalà Francesco, Torrentí Francisco (2019), Properties of oscillons in hilltop potentials: energies, shapes, and lifetimes, in Journal of Cosmology and Astroparticle Physics, 2019(10), 002-002.
Prospects for heavy scalar searches at the LHeC
Rose Luigi Delle, Fischer Oliver, Hammad A. (2019), Prospects for heavy scalar searches at the LHeC, in International Journal of Modern Physics A, 34(23), 1950127-1950127.
HE-LHC: The High-Energy Large Hadron ColliderFuture Circular Collider Conceptual Design Report Volume 4
Abada A., Abbrescia M., AbdusSalam S. S., Abdyukhanov I., Abelleira Fernandez J., Abramov A., Aburaia M., Acar A. O., Adzic P. R., Agrawal P., Aguilar-Saavedra J. A., Aguilera-Verdugo J. J., Aiba M., Aichinger I., Aielli G., Akay A., Akhundov A., Aksakal H., Albacete J. L., Albergo S., Alekou A., Aleksa M., Aleksan R., Alemany Fernandez R. M., et al. (2019), HE-LHC: The High-Energy Large Hadron ColliderFuture Circular Collider Conceptual Design Report Volume 4, in The European Physical Journal Special Topics, 228(5), 1109-1382.
FCC-hh: The Hadron ColliderFuture Circular Collider Conceptual Design Report Volume 3
Abada A., Abbrescia M., AbdusSalam S. S., Abdyukhanov I., Abelleira Fernandez J., Abramov A., Aburaia M., Acar A. O., Adzic P. R., Agrawal P., Aguilar-Saavedra J. A., Aguilera-Verdugo J. J., Aiba M., Aichinger I., Aielli G., Akay A., Akhundov A., Aksakal H., Albacete J. L., Albergo S., Alekou A., Aleksa M., Aleksan R., Alemany Fernandez R. M., et al. (2019), FCC-hh: The Hadron ColliderFuture Circular Collider Conceptual Design Report Volume 3, in The European Physical Journal Special Topics, 228(4), 755-1107.
FCC Physics OpportunitiesFuture Circular Collider Conceptual Design Report Volume 1
Abada A., Abbrescia M., AbdusSalam S. S., Abdyukhanov I., Fernandez J. Abelleira, Abramov A., Aburaia M., Acar A. O., Adzic P. R., Agrawal P., Aguilar-Saavedra J. A., Aguilera-Verdugo J. J., Aiba M., Aichinger I., Aielli G., Akay A., Akhundov A., Aksakal H., Albacete J. L., Albergo S., Alekou A., Aleksa M., Aleksan R., Fernandez R. M. Alemany, et al. (2019), FCC Physics OpportunitiesFuture Circular Collider Conceptual Design Report Volume 1, in The European Physical Journal C, 79(6), 474-474.
FCC-ee: The Lepton ColliderFuture Circular Collider Conceptual Design Report Volume 2
Abada A., Abbrescia M., AbdusSalam S. S., Abdyukhanov I., Abelleira Fernandez J., Abramov A., Aburaia M., Acar A. O., Adzic P. R., Agrawal P., Aguilar-Saavedra J. A., Aguilera-Verdugo J. J., Aiba M., Aichinger I., Aielli G., Akay A., Akhundov A., Aksakal H., Albacete J. L., Albergo S., Alekou A., Aleksa M., Aleksan R., Alemany Fernandez R. M., et al. (2019), FCC-ee: The Lepton ColliderFuture Circular Collider Conceptual Design Report Volume 2, in The European Physical Journal Special Topics, 228(2), 261-623.
Resolvable heavy neutrino–antineutrino oscillations at colliders
Antusch Stefan, Cazzato Eros, Fischer Oliver (2019), Resolvable heavy neutrino–antineutrino oscillations at colliders, in Modern Physics Letters A, 34(07n08), 1950061-1950061.
Low scale type II seesaw: present constraints and prospects for displaced vertex searches
Antusch Stefan, Fischer Oliver, Hammad A., Scherb Christiane (2019), Low scale type II seesaw: present constraints and prospects for displaced vertex searches, in Journal of High Energy Physics, 2019(2), 157-157.
Searching for charged Higgs bosons in the B − L supersymmetric standard model at the high luminosity large hadron collider
Abdallah W., Hammad A., Khalil S., Moretti S. (2019), Searching for charged Higgs bosons in the B − L supersymmetric standard model at the high luminosity large hadron collider, in Physics Letters B, 788, 65-69.
Predicting δPMNS, θ23PMNS and fermion mass ratios from flavour GUTs with CSD2
Antusch Stefan, Hohl Christian, Khosa Charanjit K., Susič Vasja (2018), Predicting δPMNS, θ23PMNS and fermion mass ratios from flavour GUTs with CSD2, in Journal of High Energy Physics, 2018(12), 25-25.
Long-lived B−L symmetric SSM particles at the LHC
Abdallah W., Hammad A., Kasem A., Khalil S. (2018), Long-lived B−L symmetric SSM particles at the LHC, in Physical Review D, 98(9), 095019-095019.
Lepton flavor violating dilepton dijet signatures from sterile neutrinos at proton colliders
Antusch Stefan, Cazzato Eros, Fischer Oliver, Hammad A., Wang Kechen (2018), Lepton flavor violating dilepton dijet signatures from sterile neutrinos at proton colliders, in Journal of High Energy Physics, 2018(10), 67-67.
Probing leptogenesis at future colliders
Antusch Stefan, Cazzato Eros, Drewes Marco, Fischer Oliver, Garbrecht Björn, Gueter Dario, Klarić Juraj (2018), Probing leptogenesis at future colliders, in Journal of High Energy Physics, 2018(9), 124-124.
Non-universal Z′ from SO(10) GUTs with vector-like family and the origin of neutrino masses
Antusch Stefan, Hohl Christian, King Steve F., Susič Vasja (2018), Non-universal Z′ from SO(10) GUTs with vector-like family and the origin of neutrino masses, in Nuclear Physics B, 934, 578-605.
Non-thermal leptogenesis after Majoron hilltop inflation
Antusch Stefan, Marschall Kenneth (2018), Non-thermal leptogenesis after Majoron hilltop inflation, in Journal of Cosmology and Astroparticle Physics, 2018(05), 015-015.
What can we learn from the stochastic gravitational wave background produced by oscillons?
Antusch Stefan, Cefalà Francesco, Orani Stefano (2018), What can we learn from the stochastic gravitational wave background produced by oscillons?, in Journal of Cosmology and Astroparticle Physics, 2018(03), 032-032.
Oscillons from string moduli
Antusch Stefan, Cefalà Francesco, Krippendorf Sven, Muia Francesco, Orani Stefano, Quevedo Fernando (2018), Oscillons from string moduli, in Journal of High Energy Physics, 2018(1), 83-83.

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Neutrino Cross Talk Individual talk Theoretical Perspectives on Heavy Neutral Leptons 22.11.2019 CERN, Switzerland Antusch Stefan;
Challenges and Opportunities of High Frequency Gravitational Wave Detection Talk given at a conference Gravitational waves from preheating: parameter dependence 16.10.2019 ICTP, Trieste, Italy Torrenti Francisco;
Swiss Cosmology Days 2019 Talk given at a conference Non-thermal Leptogenesis after Hilltop Inflation 04.08.2019 Zürich, Switzerland Marschall Kenneth;
Swiss Cosmology Days 2019 Talk given at a conference Lifetimes and shapes of oscillons in hilltop potentials 04.08.2019 Zürich, Switzerland Torrenti Francisco;
FLASY 2019 International Workshop Talk given at a conference Collider tests of low scale seesaw models 24.07.2019 Shanghai, Hefei, China Antusch Stefan;
General Relativity 22 Talk given at a conference Gravitational waves from preheating: parameter dependence 10.07.2019 Valencia, Spain Torrenti Francisco;
Theorie-Seminar Individual talk Sterile neutrino searches at future colliders 20.05.2019 Bonn, Germany Antusch Stefan;
Resonance instabilities in cosmology Talk given at a conference Fitting resonances in the early Universe 17.05.2019 YITP, Kyoto, Japan Torrenti Francisco;
Cost Workshop on Higgs and Flavour Physics Talk given at a conference Collider tests of low scale seesaw models 14.01.2019 Lissabon, Portugal Antusch Stefan;
Egyptian network for High energy physics monthly meeting (ENHEP) Talk given at a conference Charged Higgs Searches at HL-LHC 17.11.2018 Cairo, Egypt Hammad Ahmed;
Searching for long-lived particles at the LHC: Fourth workshop of the LHC LLP Community Talk given at a conference Long-Lived BLSSM Particles at the LHC 25.10.2018 Amsterdam, Netherlands Hammad Ahmed;
Fourth workshop of the LHC Long-Lived Particle (LLP) Community Talk given at a conference Long-Lived BLSSM Particles 24.10.2018 Amsterdam, Netherlands Hammad Ahmed;
Workshop: "The future of particle physics ..." Talk given at a conference At which scale are the sparticle masses - a GUT model perspective 01.10.2018 Karlsruhe, Germany Antusch Stefan;
Belgian Gravitational Waves Seminar Individual talk Oscillons and gravitational waves from preheating after inflation 25.09.2018 Louvain la Neuve, Belgium Antusch Stefan;
Invisibles18 Talk given at a conference Sterile Neutrino Searches at Colliders 03.09.2018 Karlsruhe, Germany Antusch Stefan;
Zurich Phenomenology Workshop 2018 Talk given at a conference Heavy Neutral Leptons: A Theoretical Overview 15.01.2018 Zürich, Switzerland Antusch Stefan;


Associated projects

Number Title Start Funding scheme
163036 Matter, Forces and the Universe 01.10.2015 Project funding (Div. I-III)

Abstract

The aim of the research project is the development and precision testing of models beyond the Standard Models of particle physics and cosmology, towards a more fundamental theory of Matter, Forces and the Universe. To identify possible building blocks of a more fundamental theory, and to investigate how to probe them with the data of future experiments, my research project focuses on the following tasks:One of the great challenges of the present Standard Model (SM) of elementary particle physics is the origin of neutrino masses. We plan to contribute towards resolving this open question by investigating systematically how the mechanism of neutrino mass generation can be probed best in future experiments, in particular at possible future electron-positron, proton-proton and electron-proton colliders such as the ILC, FCC-ee, CLIC, CEPC, HL-LHC, FCC-hh/SppC, LHeC and the FCC-eh. When constructing models for the early universe, one of the great challenges is linking the phase of cosmic inflation to the later phase of the universe where, e.g., the matter-antimatter asymmetry and the dark matter are produced. We will contribute to clarifying this link by calculating the intermediate "reheating phase", including the production of gravitational waves and non-perturbative phenomena like "oscillons", after particle physics motivated classes of "hilltop" and "hybrid-like" inflation models. In addition to these individual research directions, also the interplay between solutions to the two challenges will be explored. The results will be relevant for the design of future experiments and the clarification of their physics potential, and will lead to new candidate theories which can then be confronted with the combined data of running and future experiments.
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