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Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at √s = 8 TeV

Chatrchyan, S. and Apresyan, A. and Bornheim, A. and Bunn, J. and Chen, Y. and Di Marco, E. and Duarte, J. and Kcira, D. and Mott, A. and Newman, H. B. and Pena, C. and Rogan, C. and Spiropulu, M. and Timciuc, V. and Wilkinson, R. and Xie, S. and Zhu, R. Y. and Dubinin, M. and Dias, F. A. (2014) Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at √s = 8 TeV. Physics Letters B, 729 . pp. 149-171. ISSN 0370-2693. http://resolver.caltech.edu/CaltechAUTHORS:20140429-094428888

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Abstract

A search is performed for a massive new vector-like quark T, with charge (2/3), that is pair produced together with its antiparticle in proton–proton collisions. The data were collected by the CMS experiment at the Large Hadron Collider in 2012 at √s = 8 TeV and correspond to an integrated luminosity of 19.5 fb^(−1). The T quark is assumed to decay into three different final states, bW, tZ, and tH. The search is carried out using events with at least one isolated lepton. No deviations from standard model expectations are observed, and lower limits are set on the T quark mass at 95% confidence level. The lower limit lies between 687 and 782 GeV for all possible values of the branching fractions into the three different final states assuming strong production. These limits are the most stringent constraints to date on the existence of such a quark.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.physletb.2014.01.006DOIArticle
http://www.sciencedirect.com/science/article/pii/S037026931400015XPublisherArticle
http://arxiv.org/abs/ARXIV:1311.7667arXivDiscussion Paper
Other Contributors:
ContributionOther Contributors NameIdentifierPersonID (may be blank)
EditorDoser, M.Doser-MUNSPECIFIED
Additional Information:© 2014 Elsevier B.V. Open Access funded by SCOAP3 - Sponsoring Consortium for Open Access Publishing in Particle Physics. Received 29 November 2013; Received in revised form 30 December 2013; Accepted 6 January 2014; Available online 8 January 2014. We 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: BMWF and FWF (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); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, MEC, 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 (Republic of Korea); LAS (Lithuania); 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); NSC (Taipei); ThEPCenter, IPST, STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie programme and the European Research Council and EPLANET (European Union); the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans lʼIndustrie et dans lʼAgriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of Czech Republic; the Council of Science and Industrial Research, India; the Compagnia di San Paolo (Torino); the HOMING PLUS programme of Foundation for Polish Science, cofinanced by EU, Regional Development Fund; and the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF.
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
Marie-Curie programmeUNSPECIFIED
European Research Council (ERC)UNSPECIFIED
EPLANET (European Union)UNSPECIFIED
Leventis Foundation UNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Belgian Federal Science Policy OfficeUNSPECIFIED
Fonds pour la Formation à la Recherche dans l’índustrie et dans l’Ágriculture (FRIA-Belgium)UNSPECIFIED
Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)UNSPECIFIED
Ministry of Education, Youth and Sports (MEYS) of Czech RepublicUNSPECIFIED
Council of Science and Industrial Research, IndiaUNSPECIFIED
Compagnia di San Paolo (Torino)UNSPECIFIED
HOMING PLUS programme of Foundation for Polish ScienceUNSPECIFIED
Thalis and Aristeia programmes cofinanced by EU-ESFUNSPECIFIED
Greek National Strategic Reference Framework (NSRF)UNSPECIFIED
Subject Keywords:CMS; Physics
Record Number:CaltechAUTHORS:20140429-094428888
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140429-094428888
Official Citation:Inclusive search for a vector-like T quark with charge in pp collisions at. (2014). Physics Letters B, 729(0), 149-171. doi: http://dx.doi.org/10.1016/j.physletb.2014.01.006
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45271
Collection:CaltechAUTHORS
Deposited By: Aucoeur Ngo
Deposited On:29 Apr 2014 17:37
Last Modified:15 Dec 2014 22:27

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