Study of High-Transverse-Momentum Higgs Boson Production in Association with a Vector Boson in the <math display="inline"><mrow><mi>q</mi><mi>q</mi><mi>b</mi><mi>b</mi></mrow></math> Final State with the ATLAS Detector

Aad, Georges; Abbott, Braden Keim; Abeling, Kira; Abicht, Nils Julius; Abidi, Haider; Aboulhorma, Asmaa; Abramowicz, Halina; Abreu, Henso; Abulaiti, Yiming; Acharya, Bobby Samir

doi:10.1103/PhysRevLett.132.131802

Study of High-Transverse-Momentum Higgs Boson Production in Association with a Vector Boson in the $q q b b$ Final State with the ATLAS Detector

ATLAS

Collaboration

Dec 11, 2023

23 pages

Published in:

Phys.Rev.Lett. 132 (2024) 13, 131802

Published: Mar 28, 2024

e-Print:

2312.07605 [hep-ex]

DOI:

10.1103/PhysRevLett.132.131802 (publication)

Report number:

CERN-EP-2023-261

Experiments:

CERN-LHC-ATLAS

View in:

datasets

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Abstract: (APS)

This Letter presents the first study of Higgs boson production in association with a vector boson (

V = W

or

Z

) in the fully hadronic

q q b b

final state using data recorded by the ATLAS detector at the LHC in proton-proton collisions at

\sqrt{s} = 13 TeV

and corresponding to an integrated luminosity of

137 {fb}^{- 1}

. The vector bosons and Higgs bosons are each reconstructed as large-radius jets and tagged using jet substructure techniques. Dedicated tagging algorithms exploiting

b

-tagging properties are used to identify jets consistent with Higgs bosons decaying into

b \bar{b}

. Dominant backgrounds from multijet production are determined directly from the data, and a likelihood fit to the jet mass distribution of Higgs boson candidates is used to extract the number of signal events. The

V H

production cross section is measured inclusively and differentially in several ranges of Higgs boson transverse momentum: 250–450, 450–650, and greater than 650 GeV. The inclusive signal yield relative to the standard model expectation is observed to be

μ = {1.4}_{- 0.9}^{+ 1.0}

and the corresponding cross section is

3.1 \pm 1.3 (stat)_{- 1.4}^{+ 1.8} (syst) pb

.

Note:

34 pages in total, author list starting page 17, 3 figures, 2 tables, published in Physical Review Letters. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2021-11

p p: colliding beams
Higgs particle: associated production
Higgs particle: transverse momentum
channel cross section: measured
jet: multiple production
Higgs particle: mass spectrum
jet: mass spectrum
p p: scattering
vector boson: associated production
Higgs particle: hadronic decay

References(69)

Figures(3)

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