Measurement of prompt J/psi pair production in pp collisions at root s = 7 Tev
2014
Аутори
Khachatryan, V.Adžić, Petar
Đorđević, Miloš
Ekmedžić, Marko
Milošević, Jovan
Milenović, Predrag
Reković, Vladimir
CMS Collaboration (ukupan broj autora: 2130)
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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%.
Кључне речи:
Hadron-Hadron Scattering / B physicsИзвор:
Journal of High Energy Physics, 2014, 9Финансирање / пројекти:
- 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.)
DOI: 10.1007/JHEP09(2014)094
ISSN: 1029-8479
WoS: 000342431400001
Scopus: 2-s2.0-84907232488
Колекције
Институција/група
VinčaTY - JOUR AU - Khachatryan, V. AU - Adžić, Petar AU - Đorđević, Miloš AU - Ekmedžić, Marko AU - Milošević, Jovan AU - Milenović, Predrag AU - Reković, Vladimir PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/132 AB - 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%. T2 - Journal of High Energy Physics T1 - Measurement of prompt J/psi pair production in pp collisions at root s = 7 Tev IS - 9 DO - 10.1007/JHEP09(2014)094 ER -
@article{ author = "Khachatryan, V. and Adžić, Petar and Đorđević, Miloš and Ekmedžić, Marko and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir", year = "2014", 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%.", journal = "Journal of High Energy Physics", title = "Measurement of prompt J/psi pair production in pp collisions at root s = 7 Tev", number = "9", doi = "10.1007/JHEP09(2014)094" }
Khachatryan, V., Adžić, P., Đorđević, M., Ekmedžić, M., Milošević, J., Milenović, P.,& Reković, V.. (2014). Measurement of prompt J/psi pair production in pp collisions at root s = 7 Tev. in Journal of High Energy Physics(9). https://doi.org/10.1007/JHEP09(2014)094
Khachatryan V, Adžić P, Đorđević M, Ekmedžić M, Milošević J, Milenović P, Reković V. Measurement of prompt J/psi pair production in pp collisions at root s = 7 Tev. in Journal of High Energy Physics. 2014;(9). doi:10.1007/JHEP09(2014)094 .
Khachatryan, V., Adžić, Petar, Đorđević, Miloš, Ekmedžić, Marko, Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Measurement of prompt J/psi pair production in pp collisions at root s = 7 Tev" in Journal of High Energy Physics, no. 9 (2014), https://doi.org/10.1007/JHEP09(2014)094 . .