Journal article
Search for lepton-flavour-violating decays of the Higgs boson
Physics letters. B, Vol.749, pp.337-362
10/07/2015
DOI: 10.1016/j.physletb.2015.07.053
Abstract
The first direct search for lepton-flavour-violating decays of the recently discovered Higgs boson (H) is described. The search is performed in the H→μτe and H→μτh channels, where τe and τh are tau leptons reconstructed in the electronic and hadronic decay channels, respectively. The data sample used in this search was collected in pp collisions at a centre-of-mass energy of View the MathML source with the CMS experiment at the CERN LHC and corresponds to an integrated luminosity of 19.7 fb−1. The sensitivity of the search is an order of magnitude better than the existing indirect limits. A slight excess of signal events with a significance of 2.4 standard deviations is observed. The p -value of this excess at MH=125 GeV is 0.010. The best fit branching fraction is View the MathML source. A constraint on the branching fraction, B(H→μτ)<1.51% at 95% confidence level is set. This limit is subsequently used to constrain the μ–τ Yukawa couplings to be less than 3.6×10−3.
Details
- Title: Subtitle
- Search for lepton-flavour-violating decays of the Higgs boson
- Creators
- CMS CollaborationYasar Onel - Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physics letters. B, Vol.749, pp.337-362
- DOI
- 10.1016/j.physletb.2015.07.053
- ISSN
- 0370-2693
- eISSN
- 1873-2445
- Publisher
- Elsevier
- Grant note
- DOI: 10.13039/501100003413, name: BMWFW; DOI: 10.13039/501100002428, name: FWF; DOI: 10.13039/501100003130, name: FWO; DOI: 10.13039/501100003593, name: CNPq; DOI: 10.13039/501100002322, name: CAPES; DOI: 10.13039/501100004586, name: FAPERJ; DOI: 10.13039/501100001807, name: FAPESP; DOI: 10.13039/501100005992, name: MES; DOI: 10.13039/100012470, name: CERN; name: CAS; name: MoST; DOI: 10.13039/501100001809, name: NSFC; DOI: 10.13039/100007637, name: COLCIENCIAS; name: MSES; name: CSF; DOI: 10.13039/501100001810, name: RPF; name: MoER; name: ERC IUT; DOI: 10.13039/501100008530, name: ERDF; DOI: 10.13039/501100002341, name: Academy of Finland; name: MEC; name: HIP; DOI: 10.13039/501100006489, name: CEA; name: CNRS/IN2P3; name: BMBF; name: DFG; name: HGF; DOI: 10.13039/501100003448, name: GSRT; DOI: 10.13039/501100003549, name: OTKA; name: NIH; DOI: 10.13039/501100001502, name: DAE; name: DST; name: IPM; DOI: 10.13039/501100001602, name: SFI; DOI: 10.13039/501100004007, name: INFN; DOI: 10.13039/501100003621, name: MSIP; DOI: 10.13039/501100003725, name: NRF; name: LAS; name: MOE; name: UM; DOI: 10.13039/501100008688, name: CINVESTAV; DOI: 10.13039/501100003141, name: CONACYT; name: SEP; name: UASLP-FAI; DOI: 10.13039/501100003524, name: MBIE; DOI: 10.13039/501100008689, name: PAEC; name: MSHE; name: NSC; name: FCT; DOI: 10.13039/501100003822, name: JINR; name: MON; DOI: 10.13039/501100008687, name: RosAtom; name: RAS; DOI: 10.13039/501100002261, name: RFBR; name: MESTD; DOI: 10.13039/501100007136, name: SEIDI; name: CPAN; name: Swiss Funding Agencies; DOI: 10.13039/501100006134, name: MST; name: ThEPCenter; name: IPST; name: STAR; DOI: 10.13039/501100004192, name: NSTDA; name: TUBITAK; DOI: 10.13039/100010440, name: TAEK; DOI: 10.13039/501100004742, name: NASU; DOI: 10.13039/501100008690, name: SFFR; DOI: 10.13039/501100000271, name: STFC; DOI: 10.13039/100000015, name: DOE; DOI: 10.13039/100000001, name: NSF; DOI: 10.13039/501100000781, name: European Research Council; name: EPLANET; DOI: 10.13039/501100004117, name: Leventis Foundation; DOI: 10.13039/100000879, name: A.P. Sloan Foundation; DOI: 10.13039/100005156, name: Alexander von Humboldt Foundation; name: Belgian Federal Science Policy Office; DOI: 10.13039/501100003134, name: Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture; DOI: 10.13039/501100003132, name: Agentschap voor Innovatie door Wetenschap en Technologie; DOI: 10.13039/501100003335, name: MEYS; name: Council of Science and Industrial Research, India; DOI: 10.13039/501100001870, name: Foundation for Polish Science; DOI: 10.13039/501100000780, name: European Union; name: Regional Development Fund; DOI: 10.13039/100007388, name: Compagnia di San Paolo; name: Consorzio per la Fisica; DOI: 10.13039/501100003407, name: MIUR, award: 20108T4XTM; name: EU-ESF; name: Greek NSRF; DOI: 10.13039/100008982, name: Qatar National Research Fund
- Language
- English
- Date published
- 10/07/2015
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428676002771
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