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ALP-ine quests at the LHC: hunting axion-like particles via peaks and dips in $t \bar{t}$ production
/ Anuar, Afiq (CERN) ; Biekötter, Anke (Mainz U., Inst. Phys. ; U. Mainz, PRISMA) ; Biekötter, Thomas (KIT, Karlsruhe, TP) ; Grohsjean, Alexander (Hamburg U.) ; Heinemeyer, Sven (Madrid, IFT) ; Jeppe, Laurids (DESY) ; Schwanenberger, Christian (Hamburg U. ; DESY) ; Weiglein, Georg (DESY ; Hamburg U., Inst. Theor. Phys. II)
We present an analysis of the sensitivity of current and future LHC searches for new spin-0 particles in top-anti-top-quark ($t\bar{t}$) final states, focusing on generic axion-like particles (ALPs) that are coupled to top quarks and gluons. [...]
arXiv:2404.19014 ; DESY-24-059 ; IFT-UAM/CSIC-24-042 ; KA-TP-06-2024 ; MITP-24-044.
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35 p.
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Focus topics for the ECFA study on Higgs / Top / EW factories
/ de Blas, Jorge (Granada U.) ; Koppenburg, Patrick (Nikhef, Amsterdam) ; List, Jenny (DESY) ; Maltoni, Fabio (Louvain U.) ; Maestre, Juan Alcaraz (Madrid, CIEMAT) ; Alimena, Juliette (DESY) ; Alison, John (Carnegie Mellon U.) ; Azzi, Patrizia (INFN, Padua) ; Azzurri, Paolo (INFN, Pisa) ; Bagnaschi, Emanuele (CERN ; INFN, Italy) et al.
In order to stimulate new engagement and trigger some concrete studies in areas where further work would be beneficial towards fully understanding the physics potential of an $e^+e^-$ Higgs / Top / Electroweak factory, we propose to define a set of focus topics. [...]
arXiv:2401.07564.
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65.
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CEPC Technical Design Report: Accelerator
/ CEPC Study Group Collaboration
The Circular Electron Positron Collider (CEPC) is a large scientific project initiated and hosted by China, fostered through extensive collaboration with international partners. The complex comprises four accelerators: a 30 GeV Linac, a 1.1 GeV Damping Ring, a Booster capable of achieving energies up to 180 GeV, and a Collider operating at varying energy modes (Z, W, H, and ttbar). [...]
arXiv:2312.14363; IHEP-CEPC-DR-2023-01; IHEP-AC-2023-01.-
2024-06-03 - 1106 p.
- Published in : Radiat. Detect. Technol. Methods 8 (2024) 1-1105
Fulltext: 2312.14363 - PDF; Publication - PDF;
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Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021
/ Bose, Tulika (Wisconsin U., Madison) ; Boveia, Antonio (Ohio State U., CCAPP) ; Doglioni, Caterina (Manchester U.) ; Griso, Simone Pagan (LBNL, Berkeley ; Sao Paulo, IFT) ; Hirschauer, James (Fermilab) ; Lipeles, Elliot (Pennsylvania U.) ; Liu, Zhen (Minnesota U.) ; Shah, Nausheen R. (Wayne State U.) ; Wang, Lian-Tao (Chicago U., EFI ; Chicago U., KICP) ; Agashe, Kaustubh (Maryland U.) et al.
This is the Snowmass2021 Energy Frontier (EF) Beyond the Standard Model (BSM) report. [...]
arXiv:2209.13128 ; FERMILAB-FN-1204-AD-QIS-SCD.
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108.
Fermilab Library Server - eConf - Fulltext - Fulltext
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Interdependence of the new "MUON G-2" Result and the $W$-Boson Mass
/ Bagnaschi, Emanuele (CERN) ; Chakraborti, Manimala (Warsaw, Copernicus Astron. Ctr.) ; Heinemeyer, Sven (Madrid, IFT) ; Saha, Ipsita (Tokyo U., IPMU) ; Weiglein, Georg (DESY ; Hamburg U.)
The electroweak (EW) sector of the Minimal Supersymmetric extension of the Standard Model (MSSM), assuming the lightest neutralino as Dark Matter (DM) candidate, can account for a variety of experimental results. In particular it can account for the discrepancy between the experimental result for the anomalous magnetic moment of the muon, $(g-2)_{\mu}$, and its Standard Model (SM) prediction. [...]
arXiv:2203.15710; CERN-TH-2022-034; DESY-22-041; IFT-UAM/CSIC-22-029.-
2022-05-23 - 26 p.
- Published in : Eur. Phys. J. C 82 (2022) 474
Fulltext: 2203.15710 - PDF; document - PDF;
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Constraining the ${\mathcal {C}}{\mathcal {P}}$ structure of Higgs-fermion couplings with a global LHC fit, the electron EDM and baryogenesis
/ Bahl, Henning (Chicago U. ; Chicago U., EFI) ; Fuchs, Elina (CERN ; Leibniz U., Hannover ; Braunschweig, Phys. Tech. Bund.) ; Heinemeyer, Sven (Madrid, IFT) ; Katzy, Judith (DESY) ; Menen, Marco (Cologne U. ; Bonn U. ; Braunschweig, Phys. Tech. Bund.) ; Peters, Krisztian (DESY) ; Saimpert, Matthias (IRFU, Saclay) ; Weiglein, Georg (DESY ; Hamburg U., Inst. Exp. Phys. II)
CP violation in the Higgs couplings to fermions is an intriguing, but not yet extensively explored possibility. We use inclusive and differential LHC Higgs boson measurements to fit the CP structure of the Higgs Yukawa couplings. [...]
arXiv:2202.11753; CERN-TH-2021-231; DESY-22-033; EFI-22-1; IFT--UAM/CSIC--21-148.-
2022-07-10 - 52 p.
- Published in : Eur. Phys. J. C 82 (2022) 604
Fulltext: document - PDF; 2202.11753 - PDF;
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Benchmark Scenarios for MSSM Higgs Boson Searches at the LHC
/ Bagnaschi, Emanuele Angelo (Universita e INFN Roma Tre (IT)) ; Heinemeyer, Sven (Universidad Autonoma de Madrid (ES)) ; Liebler, Stefan (Institute for Theoretical Physics (ITP), Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany) ; Slavich, Pietro (Centre National de la Recherche Scientifique (FR)) ; Spira, Michael (Paul Scherrer Institute (CH))
A number of benchmark scenarios for MSSM Higgs boson searches at the LHC have been proposed in recent years, and some of them are already in use by the ATLAS and CMS collaborations for the interpretation of their results from Run 2. The LHC Higgs Working Group provides a set of ROOT files that contain the numerical predictions for masses, branching ratios and production cross sections in these scenarios, relying on state-of-the art calculations implemented in public codes. [...]
LHCHWG-2021-001.-
Geneva : CERN, 2021 - 30.
Fulltext: PDF;
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Probing a Finite Unified Theory with Reduced Couplings at Future Colliders
/ Heinemeyer, Sven (Madrid, IFT ; U. Autonoma, Madrid (main) ; Cantabria Inst. of Phys.) ; Kalinowski, Jan (Warsaw U.) ; Kotlarski, Wojciech (Dresden, Tech. U.) ; Mondragon, Myriam (Mexico U.) ; Patellis, Gregory (Natl. Tech. U., Athens) ; Tracas, Nick (Munich, Max Planck Inst.) ; Zoupanos, George (Natl. Tech. U., Athens ; Munich, Max Planck Inst. ; CERN)
The search for relations among parameters that are renormalization group invariant to all orders in perturbation theory constitutes the basis of the reduction of couplings idea. Reduction of couplings can be achieved in $N=1$ Grand Unified Theories, few of which can become even all-loop finite. [...]
arXiv:2110.07261.-
2022-02-17 - 6 p.
- Published in : PoS EPS-HEP2021 (2022) 736
Fulltext: 2110.07261 - PDF; document - PDF;
In : European Physics Society conference on High Energy Physics 2021, Online, Online, 26 - 30 Jul 2021, pp.736
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