Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Biekötter, Thomas"'
ALP-ine quests at the LHC: hunting axion-like particles via peaks and dips in $t \bar{t}$ production
Autor:
Anuar, Afiq, Biekötter, Anke, Biekötter, Thomas, Grohsjean, Alexander, Heinemeyer, Sven, Jeppe, Laurids, Schwanenberger, Christian, Weiglein, Georg
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. As a fir
Externí odkaz:
http://arxiv.org/abs/2404.19014
Autor:
Biekötter, Thomas, Fontes, Duarte, Mühlleitner, Margarete, Romão, Jorge C., Santos, Rui, Silva, João P.
Publikováno v:
JHEP 05 (2024) 127
The complex two-Higgs doublet model (C2HDM) is one of the simplest extensions of the Standard Model with a source of CP-violation in the scalar sector. It has a $\mathbb{Z}_2$ symmetry, softly broken by a complex coefficient. There are four ways to i
Externí odkaz:
http://arxiv.org/abs/2403.02425
Autor:
Biekötter, Thomas, Heinemeyer, Sven, No, Jose Miguel, Radchenko, Kateryna, Romacho, María Olalla Olea, Weiglein, Georg
Publikováno v:
JHEP 01 (2024) 107
Recently the ATLAS collaboration has reported the first results of searches for heavy scalar resonances decaying into a $Z$ boson and a lighter new scalar resonance, where the $Z$ boson decays leptonically and the lighter scalar decays into a top-qua
Externí odkaz:
http://arxiv.org/abs/2309.17431
In both Run 1 and Run 2 of the LHC, the CMS collaboration has observed an excess of events in the searches for low-mass Higgs bosons in the diphoton final state at a mass of about 95 GeV. After a recent update of the experimental analysis, in which t
Externí odkaz:
http://arxiv.org/abs/2305.19716
Autor:
Biekötter, Thomas
The Brout-Englert-Higgs mechanism describes the generation of masses of fundamental particles in the Standard Model (SM). It predicts the existence of one scalar particle with precisely predicted couplings to fermions and gauge bosons. Deviations fro
Externí odkaz:
http://arxiv.org/abs/2304.11439
Autor:
Bahl, Henning, Biekötter, Thomas, Heinemeyer, Sven, Li, Cheng, Paasch, Steven, Weiglein, Georg, Wittbrodt, Jonas
The codes HiggsBounds and HiggsSignals compare model predictions of BSM models with extended scalar sectors to searches for additional scalars and to measurements of the detected Higgs boson at 125 GeV. We present a unification and extension of the f
Externí odkaz:
http://arxiv.org/abs/2210.09332
Autor:
Biekötter, Thomas, Heinemeyer, Sven, No, José Miguel, Olea-Romacho, María Olalla, Weiglein, Georg
We analyze the thermal history of the 2HDM and determine the parameter regions featuring a first-order electroweak phase transition (FOEWPT) and also much less studied phenomena like high-temperature electroweak (EW) symmetry non-restoration and the
Externí odkaz:
http://arxiv.org/abs/2208.14466
Autor:
Biekötter, Thomas, Pierre, Mathias
We investigate the impact of interactions between hidden sectors and the discovered Higgs boson $h_{125}$, allowing for additional invisible decay channels of $h_{125}$. We perform $\chi^2$-fits to the measurements of the Higgs-boson cross sections a
Externí odkaz:
http://arxiv.org/abs/2208.05505
We calculate the leading radiative corrections to the dark-matter-nucleon scattering in the pseudo-Nambu-Goldstone dark matter model augmented with a second Higgs doublet (S2HDM). In this model, the cross sections for the scattering of the dark-matte
Externí odkaz:
http://arxiv.org/abs/2207.04973
Publikováno v:
Eur. Phys. J. C 83, 450 (2023)
The CDF collaboration recently reported a measurement of the $W$-bosos mass, $M_W$, showing a large positive deviation from the Standard Model (SM) prediction. The question arises whether extensions of the SM exist that can accommodate such large val
Externí odkaz:
http://arxiv.org/abs/2204.05975