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

V. Khachatryan , A.M Sirunyan , A. Tumasyan , Adrian Byszuk , Agnieszka Zagoździńska

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.
 Collective author CMS Collaboration Author V. Khachatryan V. Khachatryan,, - , A.M Sirunyan A.M Sirunyan,, - , A. Tumasyan A. Tumasyan,, - , Adrian Byszuk ISE Adrian Byszuk,, - The Institute of Electronic Systems , Agnieszka Zagoździńska ISE Agnieszka Zagoździńska,, - The Institute of Electronic Systems Total number of authors 2287 Journal series Physics Letters B, ISSN 0370-2693 Issue year 2016 Vol 763 Pages 472-500 Publication size in sheets 1.4 Keywords in English CMS; Physics; Higgs; Lepton-flavour-violation DOI DOI:10.1016/j.physletb.2016.09.062 URL http://ac.els-cdn.com/S0370269316305706/1-s2.0-S0370269316305706-main.pdf?_tid=f8498fec-1a43-11e7-8143-00000aab0f6b&acdnat=1491426668_d2ee7712be2487a0af84503d5190e1c3 Language en angielski Score (nominal) 40 Score Ministerial score = 35.0, 05-04-2017, ArticleFromJournalMinisterial score (2013-2016) = 40.0, 05-04-2017, ArticleFromJournal Publication indicators WoS Impact Factor: 2016 = 4.807 (2) - 2016=4.327 (5) Citation count* 0
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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