Title
Search for natural supersymmetry in events with top quark pairs and photons in pp collisions at √s=8 TeV
Date Issued
01 March 2018
Access level
open access
Resource Type
journal article
Author(s)
Sirunyan A.M.
Tumasyan A.
Adam W.
Asilar E.
Bergauer T.
Brandstetter J.
Brondolin E.
Dragicevic M.
Erö J.
Flechl M.
Friedl M.
Frühwirth R.
Ghete V.M.
Hartl C.
Hörmann N.
Hrubec J.
Jeitler M.
König A.
Krätschmer I.
Liko D.
Matsushita T.
Mikulec I.
Rabady D.
Rad N.
Rahbaran B.
Rohringer H.
Schieck J.
Strauss J.
Waltenberger W.
Wulz C.E.
Dvornikov O.
Makarenko V.
Mossolov V.
Suarez Gonzalez J.
Zykunov V.
Shumeiko N.
Alderweireldt S.
De Wolf E.A.
Janssen X.
Lauwers J.
Van De Klundert M.
Van Haevermaet H.
Van Mechelen P.
Van Remortel N.
Van Spilbeeck A.
Abu Zeid S.
Blekman F.
D’Hondt J.
Daci N.
De Bruyn I.
Deroover K.
Lowette S.
Moortgat S.
Moreels L.
Olbrechts A.
Python Q.
Skovpen K.
Tavernier S.
Van Doninck W.
Van Mulders P.
Van Parijs I.
Brun H.
Clerbaux B.
De Lentdecker G.
Delannoy H.
Fasanella G.
Favart L.
Goldouzian R.
Grebenyuk A.
Karapostoli G.
Lenzi T.
Léonard A.
Luetic J.
Maerschalk T.
Marinov A.
Randle-conde A.
Seva T.
Vander Velde C.
Vanlaer P.
Vannerom D.
Yonamine R.
Zenoni F.
Zhang F.
Cornelis T.
Dobur D.
Fagot A.
Gul M.
Khvastunov I.
Poyraz D.
Salva S.
Schöfbeck R.
Tytgat M.
Van Driessche W.
Verbeke W.
Zaganidis N.
Bakhshiansohi H.
Bondu O.
Brochet S.
Bruno G.
Caudron A.
Publisher(s)
Springer Verlag
Abstract
Results are presented from a search for natural gauge-mediated supersymmetry (SUSY) in a scenario in which the top squark is the lightest squark, the next-to-lightest SUSY particle is a bino-like neutralino, and the lightest SUSY particle is the gravitino. The strong production of top squark pairs can produce events with pairs of top quarks and neutralinos, with each bino-like neutralino decaying to a photon and a gravitino. The search is performed using a sample of pp collision data accumulated by the CMS experiment at s=8 TeV, corresponding to an integrated luminosity of 19.7 fb−1. The final state consists of a lepton (electron or muon), jets, and one or two photons. The imbalance in transverse momentum in the events is compared with the expected spectrum from standard model processes. No excess event yield is observed beyond the expected background, and the result is interpreted in the context of a general model of gauge-mediated SUSY breaking that leads to exclusion of top squark masses below 650–730 GeV.[Figure not available: see fulltext.].
Volume
2018
Issue
3
Language
English
OCDE Knowledge area
Química analítica
Química física
Subjects
Scopus EID
2-s2.0-85049801810
Source
Journal of High Energy Physics
ISSN of the container
11266708
Sponsor(s)
BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COL-CIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR and RAEP (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI and FEDER (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.).
Open Access, Copyright CERN, for the benefit of the CMS Collaboration. Article funded by SCOAP3.
Sources of information:
Directorio de Producción Científica
Scopus