Journal
PHYSICS LETTERS B
Volume 713, Issue 4-5, Pages 408-433Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2012.06.023
Keywords
CMS; Physics
Funding
- FMSR (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)
- RPF (Cyprus)
- MoER [SF0690030s09]
- 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)
- NKTH (Hungary)
- DAE (India)
- DST (India)
- IPM (Iran)
- SFI (Ireland)
- INFN (Italy)
- NRF (Republic of Korea)
- WCU (Republic of Korea)
- LAS (Lithuania)
- CINVESTAV (Mexico)
- CONACYT (Mexico)
- SEP (Mexico)
- UASLP-FAI (Mexico)
- MSI (New Zealand)
- PAEC (Pakistan)
- MSHE (Poland)
- NSC (Poland)
- FCT (Portugal)
- JINR (Armenia)
- JINR (Belarus)
- JINR (Georgia)
- JINR (Ukraine)
- JINR (Uzbekistan)
- MON (Russia)
- RosAtom (Russia)
- RAS (Russia)
- RFBR (Russia)
- MSTD (Serbia)
- MICINN (Spain)
- CPAN (Spain)
- Swiss Funding Agencies (Switzerland)
- NSC (Taipei)
- TUBITAK (Turkey)
- TAEK (Turkey)
- STFC (United Kingdom)
- DOE (USA)
- 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
- HOMING PLUS programme of Foundation for Polish Science
- European Union, Regional Development Fund
- Direct For Mathematical & Physical Scien
- Division Of Physics [1314131] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/K001604/1 GRIDPP, ST/K001604/1 MICE/UKNF, ST/H000925/1, GRIDPP, ST/I005912/1, ST/I003622/1 GRIDPP, ST/F007094/1, ST/K001604/1, ST/K001604/1 T2K, ST/J004901/1, ST/I005912/1 GRIDPP, ST/K001604/1 CMS Upgrade, ST/K001604/1 SuperNEMO, ST/J005665/1, ST/K001604/1 LHCb, ST/I000410/1, ST/I505572/1, ST/K001604/1 LHCb Upgrades, ST/K001604/1 DMUK, ST/F007434/1, ST/G502347/1, CMS, ST/F006748/1, PP/D004284/1, ST/I002200/1, ST/I505580/1] Funding Source: researchfish
- STFC [ST/H00081X/2, ST/F006748/1, ST/H000925/1, ST/I000410/1, ST/I005912/1, ST/I505580/1, ST/K001604/1, ST/F007434/1, ST/I505572/1, ST/I002200/1, ST/J004901/1, ST/F007094/1, ST/J005665/1, ST/G502347/1] Funding Source: UKRI
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The result of a search for heavy long-lived charged particles produced in pp collisions at root s = 7 TeV at the LHC is described. The data sample has been collected using the CMS detector and corresponds to an integrated luminosity of 5.0 fb(-1). The inner tracking detectors are used to define a sample of events containing tracks with high momentum and high ionization energy loss. A second sample of events, which have high-momentum tracks satisfying muon identification requirements in addition to meeting high-ionization and long time-of-flight requirements, is analyzed independently. In both cases, the results are consistent with the expected background estimated from data. The results are used to establish cross section limits as a function of mass within the context of models with long-lived gluinos, scalar top quarks and scalar taus. Cross section limits on hyper-meson particles, containing new elementary long-lived hyper-quarks predicted by a vector-like confinement model, are also presented. Lower limits at 95% confidence level on the mass of gluinos (scalar top quarks) are found to be 1098 (737) GeV/c(2). A limit of 928 (626) GeV/c(2) is set for a gluinos (scalar top quark) that hadronizes into a neutral bound state before reaching the muon detectors. The lower mass limit for a pair produced scalar tau is found to be 223 GeV/c(2). Mass limits for a hyper-kaon are placed at 484, 602, and 747 GeV/c(2) for hyper-rho masses of 800, 1200, and 1600 GeV/c(2), respectively. (c) 2012 CERN. Published by Elsevier B.V. All rights reserved.
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