Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
New metastable massive particles with electric and colour charge are features of many theories beyond the Standard Model. A search is performed for long-lived gluino-based R-hadrons with the ATLAS detector at the LHC using a data sample corresponding to an integrated luminosity of 31 pb-1. We search for evidence of particles that have come to rest in the ATLAS detector and decay at some later time during the periods in the LHC bunch structure without proton–proton collisions. No significant deviations from the expected backgrounds are observed, and a cross-section limit is set. It can be interpreted as excluding gluino-based R-hadrons with masses less than 341 GeV at the 95 % C.L., for lifetimes from 10-5 to 103 seconds and a neutralino mass of 100 GeV.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- The ATLAS Collaboration
- Grant/Contract Number:
- AC02-76SF00515; AC02-05CH11231
- OSTI ID:
- 1380115
- Alternate ID(s):
- OSTI ID: 1409403
- Report Number(s):
- SLAC-PUB-17005; PII: 1965
- Journal Information:
- European Physical Journal. C, Particles and Fields, Vol. 72, Issue 4; ISSN 1434-6044
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Search for decays of stopped long-lived particles produced in proton–proton collisions at $$\sqrt{s}= 8\,\text {TeV} $$ s = 8 TeV
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journal | April 2015 |
Search for long-lived stopped $\it{R}$-hadrons decaying out-of-time with $\it{pp}$ collisions using the ATLAS detector
|
text | January 2013 |
Search for long-lived stopped R-hadrons decaying out-of-time with pp collisions using the ATLAS detector | text | January 2013 |
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