2022-06-13
16:33 |
Study of $t\bar{t}b\bar{b}$ and $t\bar{t}W$ background modelling for $t\bar{t}H$ analyses
/ Ferencz, Lars (Deutsches Elektronen-Synchrotron (DE)) ; Grevtsov, Kirill (DESY) ; Katzy, Judith (Deutsches Elektronen-Synchrotron (DE)) ; Knue, Andrea Helen (Albert Ludwigs Universitaet Freiburg (DE)) ; Van Der Linden, Jan (KIT - Karlsruhe Institute of Technology (DE)) ; McFayden, Josh (University of Sussex (GB)) ; Monig, Gianna (University of Sussex (GB)) ; Pfeffer, Emanuel Lorenz (KIT - Karlsruhe Institute of Technology (DE)) ; Saibel, Andrej (Univ. of Valencia and CSIC (ES)) ; Schroeder, Matthias (Hamburg University (DE)) et al.
This note presents Monte Carlo generator comparisons of the $t\bar{t}b\bar{b}$ and $t\bar{t}W$ processes at particle level. The aim is to compare the modelling of important backgrounds to $t\bar{t}H$ measurements in multi-lepton final states and in the $t\bar{t}H (H \to b\bar{b})$ decay channel and the treatment of the associated theory uncertainties for a combination of the full Run-2 $t\bar{t}H$ results from ATLAS and CMS. [...]
LHCHWG-2022-003.-
Geneva : CERN, 2022 - 37.
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Modelling of the single-Higgs simplified template cross-sections (STXS 1.2) for the determination of the Higgs boson trilinear self-coupling
/ Monti, Fabio (Chinese Academy of Sciences (CN)) ; Pandini, Carlo Enrico (Nikhef National institute for subatomic physics (NL)) ; Lucio Alves, Fabio Lucio (Nanjing University (CN)) ; Yang, Hongtao (University of Science and Technology of China (CN)) ; Huang, Yanping (Chinese Academy of Sciences (CN)) ; Wang, Jin (Chinese Academy of Sciences (CN)) ; Langford, Jonathon Mark (Imperial College (GB)) ; Ran, Kunlin (Chinese Academy of Sciences (CN)) ; Donega, Mauro (ETH Zurich (CH)) ; Chen, Mingshui (Chinese Academy of Sciences (CN)) et al.
The trilinear self-coupling constant of the Higgs boson $\lambda$ can be determined via the measurement of the cross sections of the main Higgs boson production mechanisms (single-H). Such cross sections receive a $\lambda$ dependence from next-to-leading order electroweak corrections. [...]
LHCHWG-2022-002.-
Geneva : CERN, 2022
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