TY  - JOUR
AU  - Khachatryan, V.
AU  - Adžić, Petar
AU  - Đorđević, Miloš
AU  - Krpić, D.
AU  - Milošević, Jovan
AU  - Milenović, Predrag
AU  - Reković, Vladimir
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4383
AB  - The Y(1S), Y(2S), and Y(3S) production cross sections in proton-proton collisions at root s = 7 TeV are measured using a data sample collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 3.1 +/- 0.3 pb(-1). Integrated over the rapidity range vertical bar y vertical bar LT 2, we find the product of the Y(1S) production cross section and branching fraction to dimuons to be sigma(pp - GT Y(1S)X) center dot B(Y(1S) - GT mu(+)mu(-)) = 7.37 +/- 0.13(-0.42)(+0.61) +/- 0.81 nb, where the first uncertainty is statistical, the second is systematic, and the third is associated with the estimation of the integrated luminosity of the data sample. This cross section is obtained assuming unpolarized Y(1S) production. With the assumption of fully transverse or fully longitudinal production polarization, the measured cross section changes by about 20%. We also report the measurement of the Y(1S), Y(2S), and Y(3S) differential cross sections as a function of transverse momentum and rapidity.
T2  - Physical Review D
T1  - Upsilon production cross section in pp collisions at root s=7 TeV
VL  - 83
IS  - 11
DO  - 10.1103/PhysRevD.83.112004
ER  - 

@article{
author = "Khachatryan, V. and Adžić, Petar and Đorđević, Miloš and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir",
year = "2011",
abstract = "The Y(1S), Y(2S), and Y(3S) production cross sections in proton-proton collisions at root s = 7 TeV are measured using a data sample collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 3.1 +/- 0.3 pb(-1). Integrated over the rapidity range vertical bar y vertical bar LT 2, we find the product of the Y(1S) production cross section and branching fraction to dimuons to be sigma(pp - GT Y(1S)X) center dot B(Y(1S) - GT mu(+)mu(-)) = 7.37 +/- 0.13(-0.42)(+0.61) +/- 0.81 nb, where the first uncertainty is statistical, the second is systematic, and the third is associated with the estimation of the integrated luminosity of the data sample. This cross section is obtained assuming unpolarized Y(1S) production. With the assumption of fully transverse or fully longitudinal production polarization, the measured cross section changes by about 20%. We also report the measurement of the Y(1S), Y(2S), and Y(3S) differential cross sections as a function of transverse momentum and rapidity.",
journal = "Physical Review D",
title = "Upsilon production cross section in pp collisions at root s=7 TeV",
volume = "83",
number = "11",
doi = "10.1103/PhysRevD.83.112004"
}

Khachatryan, V., Adžić, P., Đorđević, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2011). Upsilon production cross section in pp collisions at root s=7 TeV. in Physical Review D, 83(11).
https://doi.org/10.1103/PhysRevD.83.112004

Khachatryan V, Adžić P, Đorđević M, Krpić D, Milošević J, Milenović P, Reković V. Upsilon production cross section in pp collisions at root s=7 TeV. in Physical Review D. 2011;83(11).
doi:10.1103/PhysRevD.83.112004 .

Khachatryan, V., Adžić, Petar, Đorđević, Miloš, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Upsilon production cross section in pp collisions at root s=7 TeV" in Physical Review D, 83, no. 11 (2011),
https://doi.org/10.1103/PhysRevD.83.112004 . .