Journal
PHYSICS LETTERS B
Volume 714, Issue 2-5, Pages 158-179Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2012.06.051
Keywords
CMS; Dileptons; Resonances
Funding
- FMSR (Austria)
- FNRS
- FWO (Belgium)
- CNPq
- CAPES
- FAPERJ
- FAPESP (Brazil)
- MES (Bulgaria)
- CERN
- CAS
- MoST
- NSFC (China)
- COLCIENCIAS (Colombia)
- MSES (Croatia)
- RPF (Cyprus)
- MoER
- ERDF (Estonia)
- Academy of Finland
- MEC
- HIP (Finland)
- CEA
- CNRS/IN2P3 (France)
- BMBF
- DFG
- HGF (Germany)
- GSRT (Greece)
- OTKA
- NKTH (Hungary)
- DAE
- DST (India)
- IPM (Iran)
- SFI (Ireland)
- INFN (Italy)
- NRF
- WCU (Korea)
- LAS (Lithuania)
- CINVESTAV
- CONACYT
- SEP
- UASLP-FAI (Mexico)
- MSI (New Zealand)
- PAEC (Pakistan)
- MSHE
- NSC (Poland)
- FCT (Portugal)
- JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan)
- MON
- RosAtom
- RAS
- RFBR (Russia)
- MSTD (Serbia)
- SEIDI
- CPAN (Spain)
- Swiss Funding Agencies (Switzerland)
- NSC (Taipei)
- TUBITAK
- TAEK (Turkey)
- STFC (United Kingdom)
- DOE
- NSF (USA)
- Marie-Curie programme
- European Research Council (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)
- Council of Science and Industrial Research, India
- Compagnia di San Paolo (Torino)
- HOMING PLUS programme of Foundation for Polish Science
- European Union
- [SF0690030s09]
- Science and Technology Facilities Council [PP/D004284/1, ST/F006748/1, CMS, ST/G502347/1, ST/F007434/1, ST/K001604/1 DMUK, ST/K001604/1 LHCb Upgrades, ST/I005912/1 GRIDPP, ST/I002200/1, ST/I505580/1, ST/K001604/1 CMS Upgrade, ST/K001604/1 SuperNEMO, ST/J005665/1, ST/K001604/1 LHCb, ST/I000410/1, ST/I505572/1, ST/J004901/1, ST/K001604/1 T2K, ST/K001604/1, ST/F007094/1, ST/I003622/1 GRIDPP, ST/I005912/1, ST/H000925/1, ST/K001604/1 MICE/UKNF, ST/K001604/1 GRIDPP] Funding Source: researchfish
- STFC [ST/K001604/1, ST/H00081X/2, ST/G502347/1, ST/F006748/1, ST/H000925/1, ST/I000410/1, ST/I005912/1, ST/I505580/1, ST/J005665/1, ST/F007094/1, ST/J004901/1, ST/I002200/1, ST/I505572/1, ST/F007434/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien
- Division Of Physics [1066578, 1314131] Funding Source: National Science Foundation
Ask authors/readers for more resources
A search for narrow, high-mass resonances decaying to electron or muon pairs has been performed using pp collision data collected at root s = 7 TeV by the CMS experiment in 2011. The data sample corresponds to an integrated luminosity of approximately 5 fb(-1). The event yields observed in the signal regions are consistent with predictions of the standard model backgrounds, and upper limits on the cross section times branching fraction for a resonance decaying to dileptons are extracted from a shape analysis of the dilepton invariant mass distribution. The resulting mass limits at 95% confidence level are 2330 GeV for the Z' in the Sequential Standard Model, 2000 GeV for the superstring-inspired Z'(psi) resonance, 890 (540) GeV for the Stueckelberg extension Z'(St) the mass parameter epsilon = 0.06 (0.04), and 2140 (1810) GeV for Kaluza-Klein gravitons with the coupling parameter k/(M) over bar (Pl) of 0.10 (0.05). These limits are the most stringent to date. (C) 2012 Elsevier B.V. All rights reserved.
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