Search for lepton flavour violating decays of the Higgs boson to eτ and eμ in proton–proton collisions at √s = 8 TeV

Patrizia Barria; Cécile Caillol; Barbara Clerbaux; Gilles Lentdecker; Giuseppe Fasanella; Laurent Favart; Anastasia Grebenyuk; Georgia Karapostoli; Thomas Lenzi; Alexandre Leonard; Thierry Maerschalk; Audrey Marinov; Luca Pernie; Aidan Sean Randle-Conde; Tomislav Seva; Catherine Vander Velde; Pascal Vanlaer; Ryo Yonamine; Florian Zenoni; Fengwangdong Zhang; CMS Collaboration

doi:10.1016/j.physletb.2016.09.062

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Search for lepton flavour violating decays of the Higgs boson to eτ and eμ in proton–proton collisions at √s = 8 TeV

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Search for lepton flavour violating decays of the Higgs boson to eτ and eμ in proton–proton collisions at √s = 8 TeV

Patrizia Barria, Cécile Caillol, Barbara Clerbaux, Gilles Lentdecker, Giuseppe Fasanella, Laurent Favart, Anastasia Grebenyuk, Georgia Karapostoli, Thomas Lenzi, Alexandre Leonard, …

Physics letters. B, Vol.763, pp.472-500

01/01/2016

DOI: 10.1016/j.physletb.2016.09.062

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Abstract

A direct search for lepton flavour violating decays of the Higgs boson (H) in the H→eτ and H→eμ channels is described. The data sample used in the search was collected in proton–proton collisions at s=8 TeV with the CMS detector at the LHC and corresponds to an integrated luminosity of 19.7 fb−1. No evidence is found for lepton flavour violating decays in either final state. Upper limits on the branching fractions, B(H→eτ)<0.69% and B(H→eμ)<0.035%, are set at the 95% confidence level. The constraint set on B(H→eτ) is an order of magnitude more stringent than the existing indirect limits. The limits are used to constrain the corresponding flavour violating Yukawa couplings, absent in the standard model.

High Energy Physics

Experiment

Phenomenology

Physique des particules élémentaires

Details

Title: Subtitle: Search for lepton flavour violating decays of the Higgs boson to eτ and eμ in proton–proton collisions at √s = 8 TeV
Creators: Patrizia Barria - Université Libre de Bruxelles
Cécile Caillol - Université Libre de Bruxelles
Barbara Clerbaux - Université Libre de Bruxelles
Gilles Lentdecker
Giuseppe Fasanella - Université Libre de Bruxelles
Laurent Favart - Université Libre de Bruxelles
Anastasia Grebenyuk - Université Libre de Bruxelles
Georgia Karapostoli - Université Libre de Bruxelles
Thomas Lenzi - Université Libre de Bruxelles
Alexandre Leonard - Université Libre de Bruxelles
Thierry Maerschalk - Université Libre de Bruxelles
Audrey Marinov - Université Libre de Bruxelles
Luca Pernie - Université Libre de Bruxelles
Aidan Sean Randle-Conde
Tomislav Seva - Université Libre de Bruxelles
Catherine Vander Velde
Pascal Vanlaer - Université Libre de Bruxelles
Ryo Yonamine - Université Libre de Bruxelles
Florian Zenoni - Université Libre de Bruxelles
Fengwangdong Zhang - Université Libre de Bruxelles
CMS Collaboration
Contributors: Y Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: Physics letters. B, Vol.763, pp.472-500
DOI: 10.1016/j.physletb.2016.09.062
ISSN: 0370-2693
eISSN: 1873-2445
Publisher: Elsevier
Language: English
Date published: 01/01/2016
Academic Unit: Physics and Astronomy
Record Identifier: 9984199855402771

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