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Search for Quark Compositeness with the Dijet Centrality Ratio in pp Collisions at √s = 7  TeV

Khachatryan, V. and Bornheim, A. and Bunn, J. and Chen, Y. and Gataullin, M. and Kcira, D. and Litvine, V. and Ma, Y. and Mott, A. and Newman, H. B. and Rogan, C. and Shin, K. and Timciuc, V. and Traczyk, P. and Veverka, J. and Wilkinson, R. and Yang, Y. and Zhu, R. Y. (2010) Search for Quark Compositeness with the Dijet Centrality Ratio in pp Collisions at √s = 7  TeV. Physical Review Letters, 105 (26). Art. No. 262001. ISSN 0031-9007. https://resolver.caltech.edu/CaltechAUTHORS:20110311-150041208

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Abstract

A search for quark compositeness in the form of quark contact interactions, based on hadronic jet pairs (dijets) produced in proton-proton collisions at √s = 7  TeV, is described. The data sample of the study corresponds to an integrated luminosity of 2.9  pb^(-1) collected with the CMS detector at the LHC. The dijet centrality ratio, which quantifies the angular distribution of the dijets, is measured as a function of the invariant mass of the dijet system and is found to agree with the predictions of the standard model. A statistical analysis of the data provides a lower limit on the energy scale of quark contact interactions. The sensitivity of the analysis is such that the expected limit is 2.9 TeV; because the observed value of the centrality ratio at high invariant mass is below the expectation, the observed limit is 4.0 TeV at the 95% confidence level.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevLett.105.262001DOIArticle
http://prl.aps.org/abstract/PRL/v105/i26/e262001PublisherArticle
ORCID:
AuthorORCID
Bornheim, A.0000-0002-0128-0871
Bunn, J.0000-0002-3798-298X
Chen, Y.0000-0003-2582-6469
Kcira, D.0000-0002-8190-2414
Newman, H. B.0000-0003-0964-1480
Rogan, C.0000-0002-4166-4503
Zhu, R. Y.0000-0003-3091-7461
Additional Information:© 2010 CERN, for the CMS Collaboration. Published by The American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 21 October 2010; published 20 December 2010. We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: FMSR (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); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, 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 (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA).
Funders:
Funding AgencyGrant Number
FMSR (Austria)UNSPECIFIED
FNRS and FWO (Belgium)UNSPECIFIED
CNPq (Brazil)UNSPECIFIED
CAPES (Brazil)UNSPECIFIED
FAPERJ (Brazil)UNSPECIFIED
FAPESP (Brazil)UNSPECIFIED
MES (Bulgaria)UNSPECIFIED
CERNUNSPECIFIED
CAS (China)UNSPECIFIED
MoST (China)UNSPECIFIED
NSFC (China)UNSPECIFIED
COLCIENCIAS (Colombia)UNSPECIFIED
MSES (Croatia)UNSPECIFIED
RPF (Cyprus)UNSPECIFIED
Academy of Sciences and NICPB (Estonia)UNSPECIFIED
Academy of Finland, ME, and HIP (Finland)UNSPECIFIED
CEA (France)UNSPECIFIED
CNRS/IN2P3 (France)UNSPECIFIED
BMBF (Germany)UNSPECIFIED
DFG (Germany)UNSPECIFIED
HGF (Germany)UNSPECIFIED
GSRT (Greece)UNSPECIFIED
OTKA (Hungary)UNSPECIFIED
NKTH (Hungary)UNSPECIFIED
DAE (India)UNSPECIFIED
DST (India)UNSPECIFIED
IPM (Iran)UNSPECIFIED
SFI (Ireland)UNSPECIFIED
INFN (Italy)UNSPECIFIED
NRF (Korea)UNSPECIFIED
WCU (Korea)UNSPECIFIED
LAS (Lithuania)UNSPECIFIED
CINVESTAV (Mexico)UNSPECIFIED
CONACYT (Mexico)UNSPECIFIED
SEP (Mexico)UNSPECIFIED
UASLP-FAI (Mexico)UNSPECIFIED
PAEC (Pakistan)UNSPECIFIED
SCSR (Poland)UNSPECIFIED
FCT (Portugal)UNSPECIFIED
JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan)UNSPECIFIED
MST (Russia)UNSPECIFIED
MAE (Russia)UNSPECIFIED
MSTD (Serbia)UNSPECIFIED
MICINN (Spain)UNSPECIFIED
CPAN (Spain)UNSPECIFIED
Swiss Funding Agencies (Switzerland)UNSPECIFIED
NSC (Taipei)UNSPECIFIED
TUBITAK (Turkey)UNSPECIFIED
TAEK (Turkey)UNSPECIFIED
STFC (United Kingdom)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Issue or Number:26
Classification Code:PACS: 13.85.Hd, 12.60.Rc, 14.65.Jk
Record Number:CaltechAUTHORS:20110311-150041208
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20110311-150041208
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22837
Collection:CaltechAUTHORS
Deposited By: Benjamin Perez
Deposited On:12 Mar 2011 00:10
Last Modified:09 Mar 2020 13:19

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