Search for supersymmetry in events with soft leptons, low jet multiplicity, and missing transverse energy in proton-proton collisions at ?s=8 TeV

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dc.authoridLethuillier, Morgan/0000-0001-6185-2045
dc.authoridHall-Wilton, Richard/0000-0003-3221-2086
dc.authoridBoimska, Bozena/0000-0002-4200-1541
dc.authoridMooney, Michael/0000-0001-8348-4167
dc.authoridMoon, Chang-Seong/0000-0001-8229-7829
dc.authoridBernardes, Cesar Augusto/0000-0001-5790-9563
dc.authoridOzdemir, Kadri/0000-0002-0103-1488
dc.contributor.authorKhachatryan, V.
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAsilar, E.
dc.contributor.authorBergauer, T.
dc.contributor.authorThe CMS Collaboration
dc.date.accessioned2025-03-07T20:16:14Z
dc.date.available2025-03-07T20:16:14Z
dc.date.issued2016
dc.departmentÇağ Üniversitesi
dc.description.abstractResults are presented from a search for super symmetric particles in scenarios with small mass splittings. The data sample corresponds to 19.7 fb(-1) of proton-proton collisions recorded by the CMS experiment at root s = 8 TeV. The search targets top squark ((t) over tilde) pair production in scenarios with mass differences Delta m = m((t) over tilde) - m((chi) over tilde (0)(1)) below the W-boson mass and with top-squark decays in the four-body mode ((t) over tilde -> bl nu(chi) over tilde (0)(1)), where the neutralino ((chi) over tilde (0)(1)) is assumed to be the lightest supersymmetric particle (LSP). The signature includes a high transverse momentum (p(T)) jet associated with initial-state radiation, one or two low-p(T) leptons, and significant missing transverse energy. The event yields observed in data are consistent with the expected background contributions from standard model processes. Limits are set on the cross section for top squark pair production as a function of the (t) over tilde t and LSP masses. Assuming a 100% branching fraction for the four-body decay mode, top-squark masses below 316 GeV are excluded for Delta m = 25 GeV at 95% CL. The dilepton data are also interpreted under the assumption of chargino-neutralino production, with subsequent decays to sleptons or sneutrinos. Assuming a difference between the common ($) over tilde (+)(1)/(chi) over tilde (0)(2) mass and the LSP mass of 20 GeV and a tau-enriched decay scenario, masses in the range m((chi) over tilde (+)(1)) < 307 GeV are excluded at 95% CL. (C) 2016 The Author. Published by Elsevier B.V.
dc.description.sponsorshipBMWFW (Austria); FWF (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); CSF (Croatia); RPF (Cyprus); MoER (Estonia); ERC IUT (Estonia); 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); NIH (Hungary); DAE (India); DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP (Republic of Korea); NRF (Republic of Korea); LAS (Lithuania); MOE (Malaysia); UM (Malaysia); CINVESTAV (Mexico); CONACYT (Mexico); SEP (Mexico); UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE (Poland); FCT (Portugal); JINR (Dubna); MON (Russia); RosAtom (Russia); RAS (Russia); RFBR (Russia); MESTD (Serbia); ThEPCenter (Thailand); IPST (Thailand); STAR (Thailand); NSTDA (Thailand); TUBITAK (Turkey); TAEK (Turkey); NASU (Ukraine); SFFR (Ukraine); STFC (United Kingdom); DOE (USA); NSF (USA); Marie-Curie programme (European Union); European Research Council (European Union); Leventis Foundation; Alfred 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); Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; Council of Science and Industrial Research, India; HOMING PLUS programme of the Foundation for Polish Science; European Union, Regional Development Fund; OPUS programme of the National Science Center (Poland); Compagnia di San Paolo (Torino); MIUR project (Italy) [20108T4XTM]; Thalis programme - EU-ESF; Aristeia programme - EU-ESF; Greek NSRF; National Priorities Research Program by Qatar National Research Fund; Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand); Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); Welch Foundation [C-1845]; EPLANET (European Union); STFC [ST/I003622/1, ST/I000305/1, ST/K003542/1, ST/M004775/1, ST/J004871/1, PP/E002803/1, ST/H000925/1, ST/H000925/2, ST/K001639/1, ST/M002020/1, PP/E000479/1, ST/N000242/1, ST/J005479/1, ST/K001531/1, ST/N001273/1, ST/L005603/1] Funding Source: UKRI; Division Of Physics; Direct For Mathematical & Physical Scien [1120138, 1306951, 1314131, 1206044, 1506130, 1211067] Funding Source: National Science Foundation
dc.description.sponsorshipWe congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MOST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); 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); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); and DOE and NSF (USA).r Individuals have received support from the Marie-Curie programme and the European Research Council and EPLANET (European Union); the Leventis Foundation; the Alfred P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Science and Industrial Research, India; the HOMING PLUS programme of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund; the OPUS programme of the National Science Center (Poland); the Compagnia di San Paolo (Torino); MIUR project 20108T4XTM (Italy); the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF; the National Priorities Research Program by Qatar National Research Fund; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand); the Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); and the Welch Foundation, contract C-1845.
dc.identifier.doi10.1016/j.physletb.2016.05.033
dc.identifier.endpage35
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.scopus2-s2.0-85040811311
dc.identifier.scopusqualityQ1
dc.identifier.startpage9
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2016.05.033
dc.identifier.urihttps://hdl.handle.net/20.500.12507/3014
dc.identifier.volume759
dc.identifier.wosWOS:000380409200002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofPhysics Letters B
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20241226
dc.subjectCMS
dc.subjectPhysics
dc.subjectSupersymmetry
dc.titleSearch for supersymmetry in events with soft leptons, low jet multiplicity, and missing transverse energy in proton-proton collisions at ?s=8 TeV
dc.typeArticle

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