Search for the Decay of the Higgs Boson to Charm Quarks with the ATLAS Experiment

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, B Abeloos, S.H. Abidi, Ossama Sherif Alexander Abouzeid, NL Abraham, H. Abramowicz, H. Abreu, Y. Abulaiti, B.S. Acharya, Sosuke Adachi, L. Adamczyk, J Adelman, M. Adersberger, T. Adye, A. A. Affolder, Y. Afik, C. AgheorghieseiJ. A. Aguilar-Saavedra, S. P. Ahlen, F. Ahmadov, G. Aielli, Jørn Dines Hansen, Jørgen Beck Hansen, Mogens Dam, Stefania Xella, Peter Henrik Hansen, Troels Christian Petersen, Alejandro Alonso Diaz, James William Monk, Graig Wiglesworth, Simon Holm Stark, Geert-Jan Besjes, Milena Bajic, Fabian Alexander Jürgen Thiele, Flavia de Almeida Dias, Gorm Aske Gram Krohn Galster

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Abstract

A direct search for the standard model Higgs boson decaying to a pair of charm quarks is presented. Associated production of the Higgs and Z bosons, in the decay mode ZH→ + -cc is studied. A data set with an integrated luminosity of 36.1 fb-1 of pp collisions at s=13TeV recorded by the ATLAS experiment at the LHC is used. The H→cc signature is identified using charm-tagging algorithms. The observed (expected) upper limit on σ(pp→ZH)×B(H→cc) is 2.7 (3.9-1.1+2.1) pb at the 95% confidence level for a Higgs boson mass of 125 GeV, while the standard model value is 26 fb.

OriginalsprogEngelsk
Artikelnummer211802
TidsskriftPhysical Review Letters
Vol/bind120
Udgave nummer21
ISSN0031-9007
DOI
StatusUdgivet - 22 maj 2018

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