# Measurement of Higgs boson decay into b-quarks in associated production with a top-quark pair in pp collisions at root s=13 TeV with the ATLAS detector

Aad, G, Abbott, B, Abbott, DC, Abud, A Abed, Abeling, K, Abhayasinghe, DK, Abidi, SH, Aboulhorma, A, Abramowicz, H, Abreu, H
et al (show 2907 more authors) (2022) Measurement of Higgs boson decay into b-quarks in associated production with a top-quark pair in pp collisions at root s=13 TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 2022 (6).

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## Abstract

<jats:title>A<jats:sc>bstract</jats:sc> </jats:title><jats:p>The associated production of a Higgs boson and a top-quark pair is measured in events characterised by the presence of one or two electrons or muons. The Higgs boson decay into a <jats:italic>b</jats:italic>-quark pair is used. The analysed data, corresponding to an integrated luminosity of 139 fb<jats:sup><jats:italic>−</jats:italic>1</jats:sup>, were collected in proton-proton collisions at the Large Hadron Collider between 2015 and 2018 at a centre-of-mass energy of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sqrt{s}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math></jats:alternatives></jats:inline-formula> = 13 TeV. The measured signal strength, defined as the ratio of the measured signal yield to that predicted by the Standard Model, is <jats:inline-formula><jats:alternatives><jats:tex-math>$${0.35}_{-0.34}^{+0.36}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mn>0.35</mml:mn> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>0.34</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>+</mml:mo> <mml:mn>0.36</mml:mn> </mml:mrow> </mml:msubsup> </mml:math></jats:alternatives></jats:inline-formula>. This result is compatible with the Standard Model prediction and corresponds to an observed (expected) significance of 1.0 (2.7) standard deviations. The signal strength is also measured differentially in bins of the Higgs boson transverse momentum in the simplified template cross-section framework, including a bin for specially selected boosted Higgs bosons with transverse momentum above 300 GeV.</jats:p>

Item Type: Article Hadron-Hadron Scattering Faculty of Science and Engineering > School of Physical Sciences Symplectic Admin 01 Aug 2022 07:58 18 Jan 2023 20:54 10.1007/JHEP06(2022)097 https://link.springer.com/article/10.1007/JHEP06(2... https://livrepository.liverpool.ac.uk/id/eprint/3160003