Transverse-Momentum and Pseudorapidity Distributions of Charged Hadrons in pp Collisions at root s=7 TeV
2010
Аутори
Khachatryan, V.Adžić, Petar
Đorđević, Miloš
Krpić, D.
Maletić, Dimitrije
Milošević, Jovan
Puzović, Jovan M.
Milenović, Predrag
Reković, Vladimir
CMS Collaboration (ukupan broj autora: 2072)
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Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at root s = 7 TeV are measured with the inner tracking system of the CMS detector at the LHC. The charged-hadron yield is obtained by counting the number of reconstructed hits, hit pairs, and fully reconstructed charged-particle tracks. The combination of the three methods gives a charged-particle multiplicity per unit of pseudorapidity dN(ch)/d eta vertical bar(vertical bar eta vertical bar LT 0.5) = 5.78 +/- 0.01(stat) +/- 0.23(stat) for non-single-diffractive events, higher than predicted by commonly used models. The relative increase in charged-particle multiplicity from root s = 0.9 to 7 TeV is [66.1 +/- 1.0(stat) +/- 4.2(syst)]%. The mean transverse momentum is measured to be 0.545 +/- 0.005(stat) +/- 0.015(syst) GeV/c. The results are compared with similar measurements at lower energies.
Извор:
Physical Review Letters, 2010, 105, 2Финансирање / пројекти:
- FMSR (Austria), FNRS, 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, ME, 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), PAEC (Pakistan), SCSR (Poland), FCT (Portugal), JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan), MST and MAE (Russia), MSTDS (Serbia), MICINN and CPAN (Spain), Swiss Funding Agencies (Switzerland), NSC (Taipei), TUBITAK and TAEK (Turkey), STFC (U. K.), DOE and NSF (U. S.)
DOI: 10.1103/PhysRevLett.105.022002
ISSN: 0031-9007; 1079-7114
PubMed: 20867699
WoS: 000279555600002
Scopus: 2-s2.0-77954594464
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Институција/група
VinčaTY - JOUR AU - Khachatryan, V. AU - Adžić, Petar AU - Đorđević, Miloš AU - Krpić, D. AU - Maletić, Dimitrije AU - Milošević, Jovan AU - Puzović, Jovan M. AU - Milenović, Predrag AU - Reković, Vladimir PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4031 AB - Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at root s = 7 TeV are measured with the inner tracking system of the CMS detector at the LHC. The charged-hadron yield is obtained by counting the number of reconstructed hits, hit pairs, and fully reconstructed charged-particle tracks. The combination of the three methods gives a charged-particle multiplicity per unit of pseudorapidity dN(ch)/d eta vertical bar(vertical bar eta vertical bar LT 0.5) = 5.78 +/- 0.01(stat) +/- 0.23(stat) for non-single-diffractive events, higher than predicted by commonly used models. The relative increase in charged-particle multiplicity from root s = 0.9 to 7 TeV is [66.1 +/- 1.0(stat) +/- 4.2(syst)]%. The mean transverse momentum is measured to be 0.545 +/- 0.005(stat) +/- 0.015(syst) GeV/c. The results are compared with similar measurements at lower energies. T2 - Physical Review Letters T1 - Transverse-Momentum and Pseudorapidity Distributions of Charged Hadrons in pp Collisions at root s=7 TeV VL - 105 IS - 2 DO - 10.1103/PhysRevLett.105.022002 ER -
@article{ author = "Khachatryan, V. and Adžić, Petar and Đorđević, Miloš and Krpić, D. and Maletić, Dimitrije and Milošević, Jovan and Puzović, Jovan M. and Milenović, Predrag and Reković, Vladimir", year = "2010", abstract = "Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at root s = 7 TeV are measured with the inner tracking system of the CMS detector at the LHC. The charged-hadron yield is obtained by counting the number of reconstructed hits, hit pairs, and fully reconstructed charged-particle tracks. The combination of the three methods gives a charged-particle multiplicity per unit of pseudorapidity dN(ch)/d eta vertical bar(vertical bar eta vertical bar LT 0.5) = 5.78 +/- 0.01(stat) +/- 0.23(stat) for non-single-diffractive events, higher than predicted by commonly used models. The relative increase in charged-particle multiplicity from root s = 0.9 to 7 TeV is [66.1 +/- 1.0(stat) +/- 4.2(syst)]%. The mean transverse momentum is measured to be 0.545 +/- 0.005(stat) +/- 0.015(syst) GeV/c. The results are compared with similar measurements at lower energies.", journal = "Physical Review Letters", title = "Transverse-Momentum and Pseudorapidity Distributions of Charged Hadrons in pp Collisions at root s=7 TeV", volume = "105", number = "2", doi = "10.1103/PhysRevLett.105.022002" }
Khachatryan, V., Adžić, P., Đorđević, M., Krpić, D., Maletić, D., Milošević, J., Puzović, J. M., Milenović, P.,& Reković, V.. (2010). Transverse-Momentum and Pseudorapidity Distributions of Charged Hadrons in pp Collisions at root s=7 TeV. in Physical Review Letters, 105(2). https://doi.org/10.1103/PhysRevLett.105.022002
Khachatryan V, Adžić P, Đorđević M, Krpić D, Maletić D, Milošević J, Puzović JM, Milenović P, Reković V. Transverse-Momentum and Pseudorapidity Distributions of Charged Hadrons in pp Collisions at root s=7 TeV. in Physical Review Letters. 2010;105(2). doi:10.1103/PhysRevLett.105.022002 .
Khachatryan, V., Adžić, Petar, Đorđević, Miloš, Krpić, D., Maletić, Dimitrije, Milošević, Jovan, Puzović, Jovan M., Milenović, Predrag, Reković, Vladimir, "Transverse-Momentum and Pseudorapidity Distributions of Charged Hadrons in pp Collisions at root s=7 TeV" in Physical Review Letters, 105, no. 2 (2010), https://doi.org/10.1103/PhysRevLett.105.022002 . .