2021
Tau-lepton fake-rate determination for the ttH coupling measurement using the ATLAS detector at the LHC
MONDAL, SantuBasic information
Original name
Tau-lepton fake-rate determination for the ttH coupling measurement using the ATLAS detector at the LHC
Authors
MONDAL, Santu (356 India, guarantor, belonging to the institution)
Edition
Praha, Proceedings of Science, p. 1-3, 3 pp. 2021
Publisher
Published by Sissa Medialab srl Partita IVA
Other information
Language
English
Type of outcome
Proceedings paper
Field of Study
10303 Particles and field physics
Confidentiality degree
is not subject to a state or trade secret
Publication form
printed version "print"
References:
RIV identification code
RIV/47813059:19630/21:A0000172
Organization unit
Institute of physics in Opava
ISSN
EID Scopus
2-s2.0-85105540683
Keywords in English
Bosons; Large dataset; Tellurium compounds
Tags
International impact, Reviewed
Changed: 16/3/2022 12:12, Mgr. Pavlína Jalůvková
Abstract
In the original language
A search for the associated production of a top-quark pair with the Higgs boson (ttH ¯) in multilepton final states is presented. The search is based on a dataset of proton-proton collisions at vs = 13 TeV and an integrated luminosity of 80 fb-1 recorded with the ATLAS detector at the CERN Large Hadron Collider. A synopsis of the final state with two same-charge light leptons (e or µ) and one hadronically-decaying t is described in more detail. Non-prompt light leptons background is estimated from simulation, with data-driven corrections and fake thad backgrounds are estimated using data-driven techniques. An excess of events consistent with ttH ¯ production, over the expected background from Standard Model processes, is found with an observed significance of 1.8 standard deviations, compared to an expectation of 3.1 standard deviations. Assuming Standard Model branching fractions, the best-fit value of the ttH ¯ production cross section is sttH ¯ = 294+-182162 fb, which is consistent with the Standard Model prediction.