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Search for Stopped Gluinos in pp Collisions at √s=7  TeV

Khachatryan, V. and Dubinin, M. and Spiropulu, M. and Bornheim, A. and Bunn, J. and Chen, Y. and Gataullin, M. and Kcira, D. and Litvine, V. and Ma, Y. and Mott, A. and Newman, H. B. and Rogan, C. and Timciuc, V. and Traczyk, P. and Veverka, J. and Wilkinson, R. and Yang, Y. and Zhu, R. Y. (2011) Search for Stopped Gluinos in pp Collisions at √s=7  TeV. Physical Review Letters, 106 (1). Art. No. 011801. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:20110314-093625944

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Abstract

The results of the first search for long-lived gluinos produced in 7 TeV pp collisions at the CERN Large Hadron Collider are presented. The search looks for evidence of long-lived particles that stop in the CMS detector and decay in the quiescent periods between beam crossings. In a dataset with a peak instantaneous luminosity of 1 × 10^(32)  cm^(-2) s^(-1), an integrated luminosity of 10  pb^(-1), and a search interval corresponding to 62 hours of LHC operation, no significant excess above background was observed. Limits at the 95% confidence level on gluino pair production over 13 orders of magnitude of gluino lifetime are set. For a mass difference mg˜ - mχ˜_0^1>100  GeV/c^2, and assuming BR(g˜→ gχ˜^0_1)=100%, mg˜<370  GeV/c^2 are excluded for lifetimes from 10  μs to 1000 s.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevLett.106.011801DOIUNSPECIFIED
http://prl.aps.org/abstract/PRL/v106/i1/e011801PublisherUNSPECIFIED
Additional Information:© 2011 American Physical Society. Received 26 November 2010; published 7 January 2011. Published by The American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA).
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
FMSR (Austria)UNSPECIFIED
FNRS (Belgium)UNSPECIFIED
FWO (Belgium) UNSPECIFIED
CNPq (Brazil)UNSPECIFIED
CAPES (Brazil)UNSPECIFIED
FAPERJ (Brazil)UNSPECIFIED
FAPESP (Brazil)UNSPECIFIED
MES (Bulgaria)UNSPECIFIED
CERN (China)UNSPECIFIED
CAS (China)UNSPECIFIED
MoST (China)UNSPECIFIED
NSFC (China)UNSPECIFIED
COLCIENCIAS (Colombia)UNSPECIFIED
MSES (Croatia)UNSPECIFIED
RPF (Cyprus) UNSPECIFIED
Academy of Sciences and NICPB (Estonia) UNSPECIFIED
Academy of Finland UNSPECIFIED
MEUNSPECIFIED
HIP (Finland)UNSPECIFIED
CEA (France)UNSPECIFIED
CNRS/IN2P3 (France) UNSPECIFIED
BMBF (Germany)UNSPECIFIED
DFG (Germany)UNSPECIFIED
HGF (Germany)UNSPECIFIED
GSRT (Greece) UNSPECIFIED
OTKA (Hungary)UNSPECIFIED
NKTH (Hungary)UNSPECIFIED
DAE (India)UNSPECIFIED
DST (India)UNSPECIFIED
IPM (Iran)UNSPECIFIED
SFI (Ireland)UNSPECIFIED
INFN (Italy) UNSPECIFIED
NRF (Korea)UNSPECIFIED
WCU (Korea) UNSPECIFIED
LAS (Lithuania)UNSPECIFIED
CINVESTAV (Mexico)UNSPECIFIED
CONACyT (Mexico)UNSPECIFIED
SEP (Mexico)UNSPECIFIED
UASLP-FAI (Mexico)UNSPECIFIED
PAEC (Pakistan)UNSPECIFIED
SCSR (Poland)UNSPECIFIED
FCT (Portugal)UNSPECIFIED
JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan)UNSPECIFIED
MST (Russia)UNSPECIFIED
MAE (Russia)UNSPECIFIED
MSTD (Serbia)UNSPECIFIED
MICINN UNSPECIFIED
CPAN (Spain)UNSPECIFIED
Swiss Funding Agencies (Switzerland) UNSPECIFIED
NSC (Taipei) UNSPECIFIED
TUBITAKUNSPECIFIED
TAEK (Turkey) UNSPECIFIED
STFC (United Kingdom)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Classification Code:PACS: 14.80.Ly, 12.60.Jv, 13.85.Rm
Record Number:CaltechAUTHORS:20110314-093625944
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110314-093625944
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22843
Collection:CaltechAUTHORS
Deposited By: Benjamin Perez
Deposited On:14 Mar 2011 18:42
Last Modified:17 Dec 2014 22:50

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