Published November 12, 2014
| Submitted + Published
Journal Article
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Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s = 7TeV
Abstract
A measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at √s = 7TeV is presented. The data sample corresponds to an integrated luminosity of 5.0 fb^(−1) collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25 GeV respectively, in the pseudorapidity range |η|<2.5, |η|∉[1.44,1.57] and with an angular separation ΔR>0.45, is 17.2±0.2(stat)±1.9(syst)±0.4(lumi)pb. Differential cross sections are measured as a function of the diphoton invariant mass, the diphoton transverse momentum, the azimuthal angle difference between the two photons, and the cosine of the polar angle in the Collins–Soper reference frame of the diphoton system. The results are compared to theoretical predictions at leading, next-to-leading, and next-to-next-to-leading order in quantum chromodynamics.
Additional Information
© 2014 CERN for the benefit of the CMS collaboration. Received: 28 May 2014. Accepted: 14 October 2014. Published online: 12 November 2014. 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 the source are credited. Funded by SCOAP3 / License Version CC BY 4.0. 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 theWorldwide 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: BMWFW 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, ERC IUT 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); MST (Taipei); ThEPCenter, IPST, STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (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 doorWetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Science and Industrial Research, India; the Compagnia di San Paolo (Torino); and the Thalis and Aristeia programmes cofinanced by EU ESF and the Greek NSRF.Attached Files
Published - art_10.1140_epjc_s10052-014-3129-3.pdf
Submitted - 1405.7225v2.pdf
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Additional details
- Eprint ID
- 54496
- Resolver ID
- CaltechAUTHORS:20150206-142050213
- BMWFW 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, ERC IUT 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)
- Science Foundation, Ireland
- Istituto Nazionale di Fisica Nucleare (INFN)
- NRF and WCU (Korea)
- LAS (Lithuania)
- MOE and UM (Malaysia)
- CINVESTAV, CONACYT, SEP, and 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)
- MST (Tapei)
- ThEPCenter, IPST, STAR, and NSTDA (Thailand)
- TUBITAK and TAEK (Turkey)
- NASU and SFFR (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 Science and Industrial Research, India
- Compagnia di San Paolo (Torino)
- Thalis and Aristeia programmes cofinanced by EU-ESF
- Greek NSRF
- SCOAP3
- Created
-
2015-02-06Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- CMS@Caltech