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Measurement of prompt J/psi pair production in pp collisions at root s = 7 Tev
dc.creator | Khachatryan, V. | |
dc.creator | Adžić, Petar | |
dc.creator | Đorđević, Miloš | |
dc.creator | Ekmedžić, Marko | |
dc.creator | Milošević, Jovan | |
dc.creator | Milenović, Predrag | |
dc.creator | Reković, Vladimir | |
dc.date.accessioned | 2018-03-01T15:29:02Z | |
dc.date.available | 2018-03-01T15:29:02Z | |
dc.date.issued | 2014 | |
dc.identifier.issn | 1029-8479 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/132 | |
dc.description.abstract | Production of prompt J/psi meson pairs in proton-proton collisions at root s = 7 TeV is measured with the CMS experiment at the LHC in a data sample corresponding to an integrated luminosity of about 4.7 fb(-1). The two J/psi mesons are fully reconstructed via their decays into mu(+)mu(-) pairs. This observation provides for the first time access to the high-transverse-momentum region of J/psi pair production where model predictions are not yet established. The total and differential cross sections are measured in a phase space defined by the individual J/psi transverse momentum (p(T)(J/psi)) and rapidity (vertical bar y(J/psi)vertical bar): vertical bar y(J/psi)vertical bar LT 1.2 for p(T)(J/psi) GT 6.5 GeV/c; 1.2 LT vertical bar y(J/psi)vertical bar LT 1.43 for a pT threshold that scales linearly with vertical bar y(J/psi)vertical bar from 6.5 to 4.5 GeV/c; and 1.43 LT vertical bar y(J/psi)vertical bar LT 2.2 for p(T)(J/psi) GT 4.5 GeV/c. The total cross section, assuming unpolarized prompt J/psi pair production is 1.49 +/- 0.07 (stat) +/- 0.13 (syst) nb. Different assumptions about the J/psi polarization imply modifications to the cross section ranging from -31% to +27%. | en |
dc.relation | BMWFW (Austria), FWF (Austria), FNRS (Belgium), FWO (Belgium), CNPq (Brazil), CAPES (Brazil), FAPERJ (Brazil), FAPESP (Brazil), MES (Bulgaria), CERN, CAS (China), MoST (China), NSFC (China), COL-CIENCIAS (Colombia), MSES (Croatia), CSF (Croatia), RPF (Cyprus), MoER (Estonia), ERC (Estonia), IUT (Estonia), ERDF (Estonia), Academy of Finland, MEC (Finland), HIP (Finland), CEA (France), CNRS/IN2P3 (France), BMBF, Germany, DFG (Germany), HGF (Germany), GSRT (Greece), OTKA (Hungary), NIH (Hungary), DAE (India), DST (India), IPM (Iran), SFI (Ireland), INFN (Italy), NRF (Republic of Korea), WCU (Republic of Korea), LAS (Lithuania), MOE (Malaysia), UM (Malaysia), CINVESTAV (Mexico), CONACYT (Mexico), SEP (Mexico), UASLP-FAI (Mexico), MBIE (New Zealand), PAEC (Pakistan), MSHE (Poland), NSC (Poland), FCT (Portugal), JINR (Dubna), MON (Russia), RosAtom (Russia), RAS (Russia), RFBR (Russia), MESTD (Serbia), SEIDI (Spain), CPAN (Spain), Swiss Funding Agencies (Switzerland), MST (Taipei), ThEPCenter (Thailand), IPST (Thailand), STAR (Thailand), NSTDA (Thailand), TUBITAK (Turkey), TAEK (Turkey), NASU (Ukraine), SFFR (Ukraine), STFC (United Kingdom), DOE (U.S.A.), NSF (U.S.A.) | |
dc.rights | openAccess | en |
dc.source | Journal of High Energy Physics | en |
dc.subject | Hadron-Hadron Scattering | en |
dc.subject | B physics | en |
dc.title | Measurement of prompt J/psi pair production in pp collisions at root s = 7 Tev | en |
dc.type | article | en |
dcterms.abstract | Милошевић Јован; Кхацхатрyан, В.; Екмедзиц, М.; Aдзиц, П.; Рековиц, В.; Ђорђевић Милош; Миленовић Предраг; | |
dc.citation.issue | 9 | |
dc.identifier.wos | 000342431400001 | |
dc.identifier.doi | 10.1007/JHEP09(2014)094 | |
dc.citation.other | Article Number: 094 | |
dc.citation.rank | M21 | |
dc.contributor.count | CMS Collaboration (ukupan broj autora: 2130) | |
dc.type.version | publishedVersion | |
dc.identifier.scopus | 2-s2.0-84907232488 | |
dc.identifier.fulltext | https://vinar.vin.bg.ac.rs//bitstream/id/11684/128.pdf |