期刊
PHYSICS LETTERS B
卷 744, 期 -, 页码 184-207出版社
ELSEVIER
DOI: 10.1016/j.physletb.2015.03.048
关键词
CMS; Physics; Higgs; Lepton; Muon; Electron; Dilepton; Dimuon; Dielectron; Higgs boson
资金
- 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)
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- SFI (Ireland)
- INFN (Italy)
- NRF (Republic of Korea)
- WCU (Republic of Korea)
- LAS (Lithuania)
- MOE (Malaysia)
- UM (Malaysia)
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- CONACYT (Mexico)
- SEP (Mexico)
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- PAEC (Russia)
- RFBR (Russia)
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- 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
- Compagnia di San Paolo (Torino)
- Consorzio per la Fisica (Trieste)
- MIUR project (Italy) [20108T4XTM]
- Thalis programme
- Aristeia programme
- EU-ESF
- Greek NSRF
- National Priorities Research Program by Qatar National Research Fund
- Russian Scientific Fund [14-12-00110]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1151640, 1205960, 1306951, 1314131] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1211067, 1120138, 1506130] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/I005912/1 GRIDPP, ST/I505580/1, ST/K001639/1, CMS, ST/K003844/1 GRIDPP, GRIDPP, ST/M004775/1, ST/I005912/1, ST/M005356/1, ST/J50094X/1, ST/K001604/1, ST/K003844/1, ST/K003542/1, ST/L005603/1, ST/L00609X/1 GRIDPP, ST/K001256/1, ST/J005665/1, ST/L00609X/1, ST/N000250/1, ST/M005356/1 GRIDPP, ST/J004901/1] Funding Source: researchfish
- STFC [ST/L00609X/1, ST/J50094X/1, ST/J004901/1, ST/K003542/1, ST/M005356/1, ST/K003844/1, ST/K001604/1, ST/H00081X/2, ST/M004775/1, ST/L005603/1, ST/K001639/1, ST/I005912/1, ST/I505580/1, ST/J005665/1] Funding Source: UKRI
A search is presented for a standard model-like Higgs boson decaying to the mu(+)mu(-) or e(+)e(-) final states based on proton-proton collisions recorded by the CMS experiment at the CERN LHC. The data correspond to integrated luminosities of 5.0 fb(-1) at a centre-of-mass energy of 7 TeV and 19.7 fb(-1) at 8 TeV for the mu(+)mu(-) search, and of 19.7 fb(-1) at 8 TeV for the e(+)e(-) search. Upper limits on the production cross section times branching fraction at the 95% confidence level are reported for Higgs boson masses in the range from 120 to 150 GeV. For a Higgs boson with a mass of 125 GeV decaying to mu(+)mu(-), the observed (expected) upper limit on the production rate is found to be 7.4 (6.5(-1.9)(+2.8)) times the standard model value. This corresponds to an upper limit on the branching fraction of 0.0016. Similarly, for e(+)e(-), an upper limit of 0.0019 is placed on the branching fraction, which is approximate to 3.7 x 10(5) times the standard model value. These results, together with recent evidence of the 125 GeV boson coupling to tau-leptons with a larger branching fraction consistent with the standard model, confirm that the leptonic couplings of the new boson are not flavour-universal. (C) 2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.
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