Journal
PHYSICS LETTERS B
Volume 749, Issue -, Pages 337-362Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2015.07.053
Keywords
CMS; Physics; Higgs; Muons; Taus; Lepton-flavour-violation
Funding
- BMWFW (Austria)
- FWF (Austria)
- FNRS (Belgium)
- FWO (Belgium)
- CNPq (Brazil)
- CAPES (Brazil)
- FAPERJ (Brazil)
- FAPESP (Brazil)
- MES (Bulgaria)
- CERN
- CAS (China)
- MoST (China)
- NSFC (China)
- COLCIENCIAS (Colombia)
- MSES (Croatia)
- CSF (Croatia)
- RPF (Cyprus)
- MoER (Estonia)
- ERC IUT (Estonia)
- ERDF (Estonia)
- Academy of Finland (Finland)
- MEC (Finland)
- HIP (Finland)
- CEA (France)
- CNRS/IN2P3 (France)
- BMBF (Germany)
- DFG (Germany)
- HGF (Germany)
- GSRT (Greece)
- OTKA (Hungary)
- NIH (Hungary)
- DAE (India)
- DST (India)
- IPM (Iran)
- SFI (Ireland)
- INFN (Italy)
- MSIP (Republic of Korea)
- NRF (Republic of Korea)
- LAS (Lithuania)
- MOE (Malaysia)
- UM (Malaysia)
- CINVESTAV (Mexico)
- CONACYT (Mexico)
- SEP (Mexico)
- UASLP-FAI (Mexico)
- MBIE (New Zealand)
- PAEC (Pakistan)
- MSHE (Poland)
- NSC (Poland)
- FCT (Portugal)
- JINR (Dubna)
- MON (Russia)
- RosAtom (Russia)
- RAS (Russia)
- RFBR (Russia)
- MESTD (Serbia)
- SEIDI (Spain)
- CPAN (Spain)
- Swiss Funding Agencies (Switzerland)
- MST (Taipei)
- ThEPCenter (Thailand)
- IPST (Thailand)
- STAR (Thailand)
- NSTDA (Thailand)
- TUBITAK (Turkey)
- TAEK (Turkey)
- NASU (Ukraine)
- SFFR (Ukraine)
- STFC (United Kingdom)
- DOE (USA)
- NSF (USA)
- Marie-Curie programme
- European Research Council
- EPLANET (European Union)
- Leventis Foundation
- A.P. Sloan Foundation
- Alexander von Humboldt Foundation
- Belgian Federal Science Policy Office
- Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)
- Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
- Ministry of Education, Youth and Sports (MEYS) of the Czech Republic
- Council of Science and Industrial Research, India
- HOMING PLUS programme of Foundation for Polish Science
- European Union, Regional Development Fund
- Consorzio per la Fisica (Trieste)
- MIUR project (Italy) [20108T4XTM]
- EU-ESF
- Greek NSRF
- National Priorities Research Program by Qatar National Research Fund
- Compagnia di San Paolo (Torino)
- Division Of Physics
- Direct For Mathematical & Physical Scien [1306951, 1120138, 1506130, 1206044, 1508869] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1151640, 1306040, 1211067, 1506168, 1314131] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/L00609X/1 GRIDPP, ST/K001256/1, ST/J005665/1, ST/L00609X/1, ST/N000250/1, ST/M005356/1 GRIDPP, ST/J004901/1, ST/L005603/1, ST/K003542/1, ST/K003844/1, ST/K001604/1, ST/J50094X/1, ST/M005356/1, ST/I005912/1 GRIDPP, ST/I505580/1, ST/K001639/1, CMS, ST/K003844/1 GRIDPP, GRIDPP, ST/M004775/1, ST/I005912/1] Funding Source: researchfish
- STFC [ST/L005603/1, ST/K001604/1, ST/I505580/1, ST/J005665/1, ST/M004775/1, ST/J004901/1, ST/K003542/1, ST/M005356/1, ST/K003844/1, ST/I005912/1, ST/J50094X/1, ST/L00609X/1, ST/K001639/1] Funding Source: UKRI
Ask authors/readers for more resources
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 -> mu tau(e) and H -> mu tau(h) channels, where tau(e) and tau(h) 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 root s = 8 TeV 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 M-H = 125 GeV is 0.010. The best fit branching fraction is beta(H -> mu tau) = (0.84(-0.37)(+0.39))%. A constraint on the branching fraction, beta(H -> mu tau) < 1.51% at 95% confidence level is set. This limit is subsequently used to constrain the mu-tau Yukawa couplings to be less than 3.6 x 10(-3). (C) 2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.
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