Published April 30, 2014
| Version Published + Submitted
Journal Article
Open
Measurements of the tt charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV
Abstract
The tt charge asymmetry in proton-proton collisions at √s = 7 TeV is measured using the dilepton decay channel (ee, eμ, or μμ). The data correspond to a total integrated luminosity of 5.0 fb^(−1), collected by the CMS experiment at the LHC. The tt and lepton charge asymmetries, defined as the differences in absolute values of the rapidities between the reconstructed top quarks and antiquarks and of the pseudorapidities between the positive and negative leptons, respectively, are measured to be A_C = −0.010 ± 0.017 (stat.) ± 0.008 (syst.) and A^(lep)_C = 0.009 ± 0.010 (stat.) ± 0.006 (syst.). The lepton charge asymmetry is also measured as a function of the invariant mass, rapidity, and transverse momentum of the tt system. All measurements are consistent with the expectations of the standard model.
Additional Information
© 2014 CERN for the benefit of the CMS Collaboration. Article funded by SCOAP3. Published for SISSA by Springer. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. Received: February 16, 2014. Revised: March 22, 2014. Accepted: April 4, 2014. Published: April 30, 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 and CSF (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 NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (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); 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 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 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.Attached Files
Published - art_10.1007_JHEP04_2014_191.pdf
Submitted - 1402.3803v1.pdf
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Additional details
Identifiers
- Eprint ID
- 46201
- Resolver ID
- CaltechAUTHORS:20140611-103037938
Related works
- Describes
- http://arxiv.org/abs/1402.3803 (URL)
Funding
- BMWF and FWF (Austria)
- FNRS and FWO (Belgium)
- CNPq (Brazil)
- CAPES (Brazil)
- FAPERJ (Brazil)
- FAPESP (Brazil)
- MES (Bulgaria)
- CERN
- CAS
- MoST (China)
- NSFC (China)
- COLCIENCIAS (Colombia)
- MSES and CSF (Croatia)
- RPF (Cyprus)
- MoER
- SF0690030s09
- ERDF (Estonia)
- Academy of Finland
- MEC (Finland)
- HIP (Finland)
- CEA and CNRS/IN2P3 (France)
- BMBF (Germany)
- Deutsche Forschungsgemeinschaft (DFG)
- HGF (Germany)
- GSRT (Greece)
- OTKA and NIH (Hungary)
- DAE and DST (India)
- IPM (Iran)
- Science Foundation, Ireland
- Istituto Nazionale di Fisica Nucleare (INFN)
- NRF and WCU (Korea)
- LAS (Lithuania)
- MOE and UM (Malaysia)
- CINVESTAV (Mexico)
- CONACYT (Mexico)
- SEP (Mexico)
- UASLP-FAI (Mexico)
- MBIE (New Zealand)
- PAEC (Pakistan)
- MSHE and NSC (Poland)
- Fundação para a Ciência e a Tecnologia (FCT)
- JINR (Dubna)
- MON
- RosAtom
- RAS and RFBR (Russia)
- MESTD (Serbia)
- SEIDI and CPAN (Spain)
- Swiss Funding Agencies (Switzerland)
- National Science Council (Taipei)
- ThEPCenter
- IPST (Thailand)
- STAR and NSTDA (Thailand)
- TUBITAK and TAEK (Turkey)
- NASU (Ukraine)
- Science and Technology Facilities Council (STFC)
- Department of Energy (DOE)
- NSF
- Marie Curie programme and the European Research Council and EPLANET (European Union)
- Leventis Foundation
- Alfred P. Sloan Foundation
- Alexander von Humboldt Foundation
- Belgian Federal Science Policy Office
- Fonds pour la Formation à la Recherche dans l'índustrie et dans l'Ágriculture (FRIA-Belgium)
- Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
- Ministry of Education, Youth and Sports (MEYS) of Czech Republic
- Council of Scientific and Industrial Research of India
- Compagnia di San Paolo (Torino)
- HOMING PLUS programme of Foundation for Polish Science
- Regional Development Fund
- Thalis and Aristeia programmes cofinanced by EU-ESF
- Greek NSRF
Dates
- Created
-
2014-06-11Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field