Evidence for Higgs boson decay to a pair of muons

Albert M Sirunyan; Armen Tumasyan; Wolfgang Adam; Thomas Bergauer; Marko Dragicevic; Janos Erö; Alberto Escalante del Valle; Rudolf Fruehwirth; Manfred Jeitler; Natascha Krammer; Lukas Lechner; Dietrich Liko; Ivan Mikulec; Florian Michael Pitters; Navid Rad; Jochen Schieck; Robert Schöfbeck; Markus Spanring; Sebastian Templ; Wolfgang Waltenberger; Claudia-Elisabeth Wulz; Mateusz Zarucki; Vladimir Chekhovsky; Aliaksandr Litomin; Vladimir Makarenko; Juan Suarez Gonzalez; Mohamed Rashad Darwish; Eddi A de Wolf; Davide Di Croce; Xavier Janssen; Tomas Kello; Aleksandra Lelek; Maxim Pieters; Haifa Rejeb Sfar; Hans van Haevermaet; Pierre van Mechelen; Senne van Putte; Nick van Remortel; Freya Blekman; Emil Sørensen Bols; Simranjit Singh Chhibra; Jorgen d'Hondt; Jarne de Clercq; Denys Lontkovskyi; Steven Lowette; Ivan Marchesini; Seth Moortgat; Alexander Morton; Denise Müller; Quentin Python; Stefaan Tavernier; Walter van Doninck; Petra van Mulders; Diego Beghin; Bugra Bilin; Barbara Clerbaux; Gilles de Lentdecker; Brian Dorney; Laurent Favart; Anastasia Grebenyuk; Amandeep Kaur Kalsi; Inna Makarenko; Louis Moureaux; Laurent Pétré; Andrey Popov; Nicolas Postiau; Elizabeth Starling; Laurent Thomas; Catherine Vander Velde; Pascal Vanlaer; David Vannerom; Liam Wezenbeek; Tom Cornelis; Didar Dobur; Marek Gruchala; Illia Khvastunov; Marek Niedziela; Christos Roskas; Kirill Skovpen; Michael Tytgat; Willem Verbeke; Basile Vermassen; Martina Vit; Giacomo Bruno; Florian Joel J Bury; Claudio Caputo; Pieter David; Christophe Delaere; Martin Delcourt; Izzeddin Suat Donertas; Andrea Giammanco; Vincent Lemaitre; Kuntal Mondal; Jessica Prisciandaro; Angela Taliercio; Maksym Teklishyn; Pietro Vischia; Sébastien Wertz; Sophie Wuyckens; Gilvan Alves; CMS Collaboration; Abdulla Abdulsalam

doi:10.1007/JHEP01(2021)148

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Evidence for Higgs boson decay to a pair of muons

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Evidence for Higgs boson decay to a pair of muons

Albert M Sirunyan, Armen Tumasyan, Wolfgang Adam, Thomas Bergauer, Marko Dragicevic, Janos Erö, Alberto Escalante del Valle, Rudolf Fruehwirth, Manfred Jeitler, Natascha Krammer, …

JHEP, Vol.1(1), pp.148-68

01/01/2021

DOI: https://doi.org/10.1007/JHEP01(2021)148

Abstract

High Energy Physics - Experiment

Physics

Evidence for Higgs boson decay to a pair of muons is presented. This result combines searches in four exclusive categories targeting the production of the Higgs boson via gluon fusion, via vector boson fusion, in association with a vector boson, and in association with a top quark-antiquark pair. The analysis is performed using proton-proton collision data at $ \sqrt{s} $ = 13 TeV, corresponding to an integrated luminosity of 137 fb$^{−1}$, recorded by the CMS experiment at the CERN LHC. An excess of events over the back- ground expectation is observed in data with a significance of 3.0 standard deviations, where the expectation for the standard model (SM) Higgs boson with mass of 125.38 GeV is 2.5. The combination of this result with that from data recorded at $ \sqrt{s} $ = 7 and 8 TeV, corresponding to integrated luminosities of 5.1 and 19.7 fb$^{−1}$, respectively, increases both the expected and observed significances by 1%. The measured signal strength, relative to the SM prediction, is $ {1.19}_{-0.39}^{+0.40}{\left(\mathrm{stat}\right)}_{-0.14}^{+0.15}\left(\mathrm{syst}\right) $. This result constitutes the first evidence for the decay of the Higgs boson to second generation fermions and is the most precise measurement of the Higgs boson coupling to muons reported to date.[graphic not available: see fulltext]

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Title: Evidence for Higgs boson decay to a pair of muons
Creators - without role: Albert M Sirunyan - Alikhanyan National Laboratory
Armen Tumasyan - Alikhanyan National Laboratory
Wolfgang Adam - Institute of High Energy Physics
Thomas Bergauer - Institute of High Energy Physics
Marko Dragicevic - Institute of High Energy Physics
Janos Erö - Institute of High Energy Physics
Alberto Escalante del Valle
Rudolf Fruehwirth
Manfred Jeitler - TU Wien
Natascha Krammer - Institute of High Energy Physics
Lukas Lechner - Institute of High Energy Physics
Dietrich Liko - Institute of High Energy Physics
Ivan Mikulec - Institute of High Energy Physics
Florian Michael Pitters - Institute of High Energy Physics
Navid Rad - Institute of High Energy Physics
Jochen Schieck - Institute of High Energy Physics
Robert Schöfbeck - Institute of High Energy Physics
Markus Spanring - Institute of High Energy Physics
Sebastian Templ - Institute of High Energy Physics
Wolfgang Waltenberger - Institute of High Energy Physics
Claudia-Elisabeth Wulz - Institute of High Energy Physics
Mateusz Zarucki - Institute of High Energy Physics
Vladimir Chekhovsky
Aliaksandr Litomin
Vladimir Makarenko
Juan Suarez Gonzalez
Mohamed Rashad Darwish - University of Antwerp
Eddi A de Wolf - University of Antwerp
Davide Di Croce - University of Antwerp
Xavier Janssen - University of Antwerp
Tomas Kello - University of Antwerp
Aleksandra Lelek - University of Antwerp
Maxim Pieters - University of Antwerp
Haifa Rejeb Sfar
Hans van Haevermaet - University of Antwerp
Pierre van Mechelen - University of Antwerp
Senne van Putte - University of Antwerp
Nick van Remortel - University of Antwerp
Freya Blekman - Vrije Universiteit Brussel
Emil Sørensen Bols - Vrije Universiteit Brussel
Simranjit Singh Chhibra - Vrije Universiteit Brussel
Jorgen d'Hondt
Jarne de Clercq - Vrije Universiteit Brussel
Denys Lontkovskyi - Vrije Universiteit Brussel
Steven Lowette - Vrije Universiteit Brussel
Ivan Marchesini - Vrije Universiteit Brussel
Seth Moortgat - Vrije Universiteit Brussel
Alexander Morton - Vrije Universiteit Brussel
Denise Müller - Vrije Universiteit Brussel
Quentin Python - Vrije Universiteit Brussel
Stefaan Tavernier - Vrije Universiteit Brussel
Walter van Doninck - Vrije Universiteit Brussel
Petra van Mulders - Vrije Universiteit Brussel
Diego Beghin - Université Libre de Bruxelles
Bugra Bilin - Université Libre de Bruxelles
Barbara Clerbaux - Université Libre de Bruxelles
Gilles de Lentdecker - Université Libre de Bruxelles
Brian Dorney - Université Libre de Bruxelles
Laurent Favart - Université Libre de Bruxelles
Anastasia Grebenyuk - Université Libre de Bruxelles
Amandeep Kaur Kalsi - Université Libre de Bruxelles
Inna Makarenko - Université Libre de Bruxelles
Louis Moureaux - Université Libre de Bruxelles
Laurent Pétré - Université Libre de Bruxelles
Andrey Popov - Université Libre de Bruxelles
Nicolas Postiau - Université Libre de Bruxelles
Elizabeth Starling - Université Libre de Bruxelles
Laurent Thomas - Université Libre de Bruxelles
Catherine Vander Velde
Pascal Vanlaer - Université Libre de Bruxelles
David Vannerom - Université Libre de Bruxelles
Liam Wezenbeek - Université Libre de Bruxelles
Tom Cornelis - Ghent University Hospital
Didar Dobur - Ghent University Hospital
Marek Gruchala - Ghent University Hospital
Illia Khvastunov - Ghent University Hospital
Marek Niedziela - Ghent University Hospital
Christos Roskas - Ghent University Hospital
Kirill Skovpen - Ghent University Hospital
Michael Tytgat - Ghent University Hospital
Willem Verbeke - Ghent University Hospital
Basile Vermassen - Ghent University Hospital
Martina Vit - Ghent University Hospital
Giacomo Bruno - UCLouvain
Florian Joel J Bury
Claudio Caputo - UCLouvain
Pieter David - UCLouvain
Christophe Delaere - UCLouvain
Martin Delcourt - UCLouvain
Izzeddin Suat Donertas - UCLouvain
Andrea Giammanco - UCLouvain
Vincent Lemaitre - UCLouvain
Kuntal Mondal - UCLouvain
Jessica Prisciandaro - UCLouvain
Angela Taliercio - UCLouvain
Maksym Teklishyn - UCLouvain
Pietro Vischia - UCLouvain
Sébastien Wertz - UCLouvain
Sophie Wuyckens - UCLouvain
Gilvan Alves - Centro Brasileiro de Pesquisas Físicas
CMS Collaboration
Abdulla Abdulsalam - King Abdulaziz University
Publication Details: JHEP, Vol.1(1), pp.148-68
Identifiers: 9936226908331
Academic Unit: King Abdulaziz University
Language: English
Resource Type: Journal article