Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV
2013
Authors
Chatrchyan, S.Adžić, Petar
Đorđević, Miloš
Krpić, D.
Milošević, Jovan
Milenović, Predrag
Reković, Vladimir
CMS Collaboration (ukupan broj autora: 2182)
Article
Metadata
Show full item recordAbstract
Results are presented from a search for long-lived neutralinos decaying into a photon and an invisible particle, a signature associated with gauge-mediated supersymmetry breaking in supersymmetric models. The analysis is based on a 4.9 fb(-1) sample of proton-proton collisions at root s = 7 TeV, collected with the CMS detector at the LHC. The missing transverse energy and the time of arrival of the photon at the electromagnetic calorimeter are used to search for an excess of events over the expected background. No significant excess is observed, and lower limits at the 95% confidence level are obtained on the mass of the lightest neutralino, m GT 220 GeV (for c tau LT 500 mm), as well as on the proper decay length of the lightest neutralino, c tau GT 6000 mm (for m LT 150 GeV). (c) 2013 CERN. Published by Elsevier B.V. All rights reserved.
Keywords:
CMS / LHC / SUSY / Exotica / GMSB / Long-lived / Photons / DisplacedSource:
Physics Letters B, 2013, 722, 4-5, 273-294Funding / projects:
- BMWF (Austria), FWF (Austria), FNRS (Belgium), FWO (Belgium), CNPq (Brazil), CAPES (Brazil), FAPERJ (Brazil), FAPESP (Brazil), MEYS (Bulgaria), CERN, CAS (China), MoST (China), NSFC (China), COLCIENCIAS (Colombia), MSES (Croatia), RPF (Cyprus), MoER (Estonia) [SF0690030s09], ERDF (Estonia), Academy of 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), SEIDI (Spain), CPAN (Spain), Swiss Funding Agencies (Switzerland), NSC (Taipei), ThEPCenter (Thailand), IPST (Thailand), NSTDA (Thailand), TUBITAK (Turkey), TAEK (Turkey), NASU (Ukraine), STFC (United Kingdom), DOE (USA), NSF (USA)
DOI: 10.1016/j.physletb.2013.04.027
ISSN: 0370-2693; 1873-2445
WoS: 000319638000005
Scopus: 2-s2.0-85037587339
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VinčaTY - JOUR AU - Chatrchyan, S. AU - Adžić, Petar AU - Đorđević, Miloš AU - Krpić, D. AU - Milošević, Jovan AU - Milenović, Predrag AU - Reković, Vladimir PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5526 AB - Results are presented from a search for long-lived neutralinos decaying into a photon and an invisible particle, a signature associated with gauge-mediated supersymmetry breaking in supersymmetric models. The analysis is based on a 4.9 fb(-1) sample of proton-proton collisions at root s = 7 TeV, collected with the CMS detector at the LHC. The missing transverse energy and the time of arrival of the photon at the electromagnetic calorimeter are used to search for an excess of events over the expected background. No significant excess is observed, and lower limits at the 95% confidence level are obtained on the mass of the lightest neutralino, m GT 220 GeV (for c tau LT 500 mm), as well as on the proper decay length of the lightest neutralino, c tau GT 6000 mm (for m LT 150 GeV). (c) 2013 CERN. Published by Elsevier B.V. All rights reserved. T2 - Physics Letters B T1 - Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV VL - 722 IS - 4-5 SP - 273 EP - 294 DO - 10.1016/j.physletb.2013.04.027 ER -
@article{ author = "Chatrchyan, S. and Adžić, Petar and Đorđević, Miloš and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir", year = "2013", abstract = "Results are presented from a search for long-lived neutralinos decaying into a photon and an invisible particle, a signature associated with gauge-mediated supersymmetry breaking in supersymmetric models. The analysis is based on a 4.9 fb(-1) sample of proton-proton collisions at root s = 7 TeV, collected with the CMS detector at the LHC. The missing transverse energy and the time of arrival of the photon at the electromagnetic calorimeter are used to search for an excess of events over the expected background. No significant excess is observed, and lower limits at the 95% confidence level are obtained on the mass of the lightest neutralino, m GT 220 GeV (for c tau LT 500 mm), as well as on the proper decay length of the lightest neutralino, c tau GT 6000 mm (for m LT 150 GeV). (c) 2013 CERN. Published by Elsevier B.V. All rights reserved.", journal = "Physics Letters B", title = "Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV", volume = "722", number = "4-5", pages = "273-294", doi = "10.1016/j.physletb.2013.04.027" }
Chatrchyan, S., Adžić, P., Đorđević, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2013). Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV. in Physics Letters B, 722(4-5), 273-294. https://doi.org/10.1016/j.physletb.2013.04.027
Chatrchyan S, Adžić P, Đorđević M, Krpić D, Milošević J, Milenović P, Reković V. Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV. in Physics Letters B. 2013;722(4-5):273-294. doi:10.1016/j.physletb.2013.04.027 .
Chatrchyan, S., Adžić, Petar, Đorđević, Miloš, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Search for long-lived particles in events with photons and missing energy in proton-proton collisions at root s=7 TeV" in Physics Letters B, 722, no. 4-5 (2013):273-294, https://doi.org/10.1016/j.physletb.2013.04.027 . .