Chatrchyan, S. and Apresyan, A. and Bornheim, A. and Bunn, J. and Chen, Y. and Dias, F. A. and Di Marco, E. and Duarte, J. and Gataullin, M. 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. and Spiropulu, M. and Dubinin, M. (2012) Measurement of the mass difference between top and antitop quarks. Journal of High Energy Physics, 2012 (6). Art. No. 109. ISSN 1126-6708. http://resolver.caltech.edu/CaltechAUTHORS:20121026-092233507
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Abstract
A measurement of the mass difference between the top and the antitop quark (Δm_t = m_t − m_t^-) is performed using events with a muon or an electron and at least four jets in the final state. The analysis is based on data collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.96±0.11 fb^(−1), and yields the value of Δm_t = −0.44±0.46 (stat.)±0.27 (syst.) GeV. This result is consistent with equality of particle and antiparticle masses required by CPT invariance, and provides a significantly improved precision relative to existing measurements.
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| Additional Information: | © 2012 CERN, for the benefit of the CMS collaboration. 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. Received: April 12, 2012. Revised: May 5, 2012. Accepted: May 31, 2012. Published: June 19, 2012. We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine, thank the technical and administrative staffs at CERN and other CMS institutes for their assistance, 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, 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 (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MSI (New Zealand); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MON, RosAtom, RAS and RFBR (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (U.S.A.). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Group: | CMS@Caltech | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Subject Keywords: | Hadron-Hadron Scattering | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20121026-092233507 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20121026-092233507 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Official Citation: | Measurement of the mass difference between top and antitop quarks The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan and A. Tumasyan, et al. DOI: 10.1007/JHEP06(2012)109 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ID Code: | 35118 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deposited By: | Ruth Sustaita | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deposited On: | 26 Oct 2012 16:59 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Last Modified: | 29 Aug 2014 14:27 |
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