CaltechAUTHORS
Published January 2013 | Submitted + Published
Journal Article Open

Measurement of the ZZ production cross section and search for anomalous couplings in 2ā„“2ā„“ā€² final states in pp collisions at sāˆš=7 TeV

Chatrchyan, S.
Apresyan, A. ORCID icon
Bornheim, A. ORCID icon
Chen, Y.
Di Marco, E.
Duarte, J.
Gataullin, M.
Ma, Y.
Mott, A.
Newman, H. B. ORCID icon
Rogan, C. ORCID icon
Spiropulu, M. ORCID icon
Timciuc, V.
Veverka, J.
Wilkinson, R.
Xie, S.
Yang, Y.
Zhu, R. Y. ORCID icon
Dias, F. A.
Dubinin, M.
CMS Collaboration
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Abstract

A measurement is presented of the ZZ production cross section in the ZZ ā†’ 2ā„“2ā„“ā€² decay mode with ā„“ = e, Ī¼ and ā„“ā€² = e, Ī¼, Ļ„ in proton-proton collisions at sāˆš=7 TeV with the CMS experiment at the LHC. Results are based on data corresponding to an integrated luminosity of 5.0 fb^(āˆ’1). The measured cross section Ļƒ(ppā†’ZZ)=6.24^(+0.86)_(āˆ’0.80)(stat.)^(+0.41)_(āˆ’0.32)(syst.)Ā±0.14(lumi.)pb is consistent with the standard model predictions. The following limits on ZZZ and ZZĪ³ anomalous trilinear gauge couplings are set at 95% confidence level: āˆ’0.011

Additional Information

Ā© 2013 CERN for the benefit of the CMS collaboration. Received: November 20, 2012. Accepted: December 3, 2012. Published: January 9, 2013. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. 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 centers and personnel of the Worldwide LHC Computing Grid for delivering so effec-tively 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); MEYS (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); MSI (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MON, RosAtom, RAS and RFBR (Russia); MSTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); ThEP Center, IPST and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.).

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Published - CMS_2013p063.pdf

Submitted - 1211.4890v2.pdf

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