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Measurement of the associated production of a Higgs boson decaying into b-quarks with a vector boson at high transverse momentum in pp collisions at s=13 TeV with the ATLAS detector

Aad, G.
•
Abbott, B.
•
Abbott, D. C.
altro
Zwalinski, L.
2021
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
Abstract
The associated production of a Higgs boson with a W or Z boson decaying into leptons and where the Higgs boson decays to a b (b) over bar pair is measured in the high vector-boson transverse momentum regime, above 250 GeV, with the ATLAS detector. The analysed data, corresponding to an integrated luminosity of 139 fb(-1), were collected in proton-proton collisions at the Large Hadron Collider between 2015 and 2018 at a centre-of-mass energy of root s = 13 TeV. The measured signal strength, defined as the ratio of the measured signal yield to that predicted by the Standard Model, is 0.72(-0.36)(+0.39) corresponding to an observed (expected) significance of 2.1 (2.7) standard deviations. Cross-sections of associated production of a Higgs boson decaying into b quark pairs with a W or Z gauge boson, decaying into leptons, are measured in two exclusive vector boson transverse momentum regions, 250-400 GeV and above 400 GeV, and interpreted as constraints on anomalous couplings in the framework of a Standard Model effective field theory. (C) 2021 The Author. Published by Elsevier B.V.
DOI
10.1016/j.physletb.2021.136204
WOS
WOS:000647421500036
Archivio
http://hdl.handle.net/11390/1211708
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85110134111
https://ricerca.unityfvg.it/handle/11390/1211708
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