Measurements of WH and ZH production in the H -> bb<mml:mo stretchy="false"><overbar></mml:mover> decay channel in pp collisions at 13<mml:mspace width="0.166667em"></mml:mspace>Te<mml:mspace width="0.333333em"></mml:mspace> with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2917 more authors) (2021) Measurements of WH and ZH production in the H -> bb<mml:mo stretchy="false"><overbar></mml:mover> decay channel in pp collisions at 13<mml:mspace width="0.166667em"></mml:mspace>Te<mml:mspace width="0.333333em"></mml:mspace> with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 81 (2). 178-.

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Abstract

Measurements of the Standard Model Higgs boson decaying into a $b\bar{b}$ pair and produced in association with a $W$ or $Z$ boson decaying into leptons, using proton-proton collision data collected between 2015 and 2018 by the ATLAS detector, are presented. The measurements use collisions produced by the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s} = $13 TeV, corresponding to an integrated luminosity of 139 fb$^{-1}$. The production of a Higgs boson in association with a $W$ or $Z$ boson is established with observed (expected) significances of 4.0 (4.1) and 5.3 (5.1) standard deviations, respectively. Cross-sections of associated production of a Higgs boson decaying into bottom quark pairs with an electroweak gauge boson, $W$ or $Z$, decaying into leptons are measured as a function of the gauge boson transverse momentum in kinematic fiducial volumes. The cross-section measurements are all consistent with the Standard Model expectations, and the total uncertainties vary from 30% in the high gauge boson transverse momentum regions to 85% in the low regions. Limits are subsequently set on the parameters of an effective Lagrangian sensitive to modifications of the $WH$ and $ZH$ processes as well as the Higgs boson decay into $b\bar{b}$.

Item Type: Article
Additional Information: 61 pages in total, author list starting page 45, 10 figures, 15 tables, published in EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2018-51/. The results including the correlation matrix are available at https://doi.org/10.17182/hepdata.94800
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 08 Mar 2021 10:28
Last Modified: 18 Jan 2023 22:57
DOI: 10.1140/epjc/s10052-020-08677-2
Open Access URL: https://link.springer.com/article/10.1140%2Fepjc%2...
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3116752