Exclusive J/ψ photoproduction off protons in ultra-peripheral p-Pb collisions at √sNN=5.02 TeV

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Exclusive J/ψ photoproduction off protons in ultra-peripheral p-Pb collisions at √sNN=5.02 TeV. / Abelev, B.; Adam, J.; Adamová, D.; Aggarwal, M.M.; Bearden, Ian; Bøggild, Hans; Christensen, Christian Holm; Gulbrandsen, Kristjan Herlache; Gaardhøje, Jens Jørgen; Nielsen, Børge Svane; Hansen, Alexander Colliander; Bilandzic, Ante; Chojnacki, Marek; Zaccolo, Valentina.

In: Physical Review Letters, Vol. 113, 232504, 30.06.2014.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Abelev, B, Adam, J, Adamová, D, Aggarwal, MM, Bearden, I, Bøggild, H, Christensen, CH, Gulbrandsen, KH, Gaardhøje, JJ, Nielsen, BS, Hansen, AC, Bilandzic, A, Chojnacki, M & Zaccolo, V 2014, 'Exclusive J/ψ photoproduction off protons in ultra-peripheral p-Pb collisions at √sNN=5.02 TeV', Physical Review Letters, vol. 113, 232504. https://doi.org/10.1103/PhysRevLett.113.232504

APA

Abelev, B., Adam, J., Adamová, D., Aggarwal, M. M., Bearden, I., Bøggild, H., Christensen, C. H., Gulbrandsen, K. H., Gaardhøje, J. J., Nielsen, B. S., Hansen, A. C., Bilandzic, A., Chojnacki, M., & Zaccolo, V. (2014). Exclusive J/ψ photoproduction off protons in ultra-peripheral p-Pb collisions at √sNN=5.02 TeV. Physical Review Letters, 113, [232504]. https://doi.org/10.1103/PhysRevLett.113.232504

Vancouver

Abelev B, Adam J, Adamová D, Aggarwal MM, Bearden I, Bøggild H et al. Exclusive J/ψ photoproduction off protons in ultra-peripheral p-Pb collisions at √sNN=5.02 TeV. Physical Review Letters. 2014 Jun 30;113. 232504. https://doi.org/10.1103/PhysRevLett.113.232504

Author

Abelev, B. ; Adam, J. ; Adamová, D. ; Aggarwal, M.M. ; Bearden, Ian ; Bøggild, Hans ; Christensen, Christian Holm ; Gulbrandsen, Kristjan Herlache ; Gaardhøje, Jens Jørgen ; Nielsen, Børge Svane ; Hansen, Alexander Colliander ; Bilandzic, Ante ; Chojnacki, Marek ; Zaccolo, Valentina. / Exclusive J/ψ photoproduction off protons in ultra-peripheral p-Pb collisions at √sNN=5.02 TeV. In: Physical Review Letters. 2014 ; Vol. 113.

Bibtex

@article{2f3531198c534a1baa16ab172384878b,
title = "Exclusive J/ψ photoproduction off protons in ultra-peripheral p-Pb collisions at √sNN=5.02 TeV",
abstract = "We present the first measurement at the LHC of exclusive J/ψ photoproduction off protons, in ultraperipheral proton-lead collisions at sNN−−−√=5.02  TeV. Events are selected with a dimuon pair produced either in the rapidity interval, in the laboratory frame, 2.5<y<4 (p−Pb) or −3.6<y<−2.6 (Pb−p), and no other particles observed in the ALICE acceptance. The measured cross sections σ(γ+p→J/ψ+p) are 33.2±2.2(stat)±3.2(syst)±0.7(theor)  nb in p−Pb and 284±36(stat)+27−32(syst)±26(theor)  nb in Pb−p collisions. We measure this process up to about 700 GeV in the γp center of mass, which is a factor of two larger than the highest energy studied at HERA. The data are consistent with a power law dependence of the J/ψ photoproduction cross section in γp energies from about 20 to 700 GeV, or equivalently, from Bjorken x scaling variable between ∼2×10−2 and ∼2×10−5, thus indicating no significant change in the gluon density behavior of the proton between HERA and LHC energies.",
author = "B. Abelev and J. Adam and D. Adamov{\'a} and M.M. Aggarwal and Ian Bearden and Hans B{\o}ggild and Christensen, {Christian Holm} and Gulbrandsen, {Kristjan Herlache} and Gaardh{\o}je, {Jens J{\o}rgen} and Nielsen, {B{\o}rge Svane} and Hansen, {Alexander Colliander} and Ante Bilandzic and Marek Chojnacki and Valentina Zaccolo",
year = "2014",
month = jun,
day = "30",
doi = "10.1103/PhysRevLett.113.232504",
language = "English",
volume = "113",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",

}

RIS

TY - JOUR

T1 - Exclusive J/ψ photoproduction off protons in ultra-peripheral p-Pb collisions at √sNN=5.02 TeV

AU - Abelev, B.

AU - Adam, J.

AU - Adamová, D.

AU - Aggarwal, M.M.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Christensen, Christian Holm

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Nielsen, Børge Svane

AU - Hansen, Alexander Colliander

AU - Bilandzic, Ante

AU - Chojnacki, Marek

AU - Zaccolo, Valentina

PY - 2014/6/30

Y1 - 2014/6/30

N2 - We present the first measurement at the LHC of exclusive J/ψ photoproduction off protons, in ultraperipheral proton-lead collisions at sNN−−−√=5.02  TeV. Events are selected with a dimuon pair produced either in the rapidity interval, in the laboratory frame, 2.5<y<4 (p−Pb) or −3.6<y<−2.6 (Pb−p), and no other particles observed in the ALICE acceptance. The measured cross sections σ(γ+p→J/ψ+p) are 33.2±2.2(stat)±3.2(syst)±0.7(theor)  nb in p−Pb and 284±36(stat)+27−32(syst)±26(theor)  nb in Pb−p collisions. We measure this process up to about 700 GeV in the γp center of mass, which is a factor of two larger than the highest energy studied at HERA. The data are consistent with a power law dependence of the J/ψ photoproduction cross section in γp energies from about 20 to 700 GeV, or equivalently, from Bjorken x scaling variable between ∼2×10−2 and ∼2×10−5, thus indicating no significant change in the gluon density behavior of the proton between HERA and LHC energies.

AB - We present the first measurement at the LHC of exclusive J/ψ photoproduction off protons, in ultraperipheral proton-lead collisions at sNN−−−√=5.02  TeV. Events are selected with a dimuon pair produced either in the rapidity interval, in the laboratory frame, 2.5<y<4 (p−Pb) or −3.6<y<−2.6 (Pb−p), and no other particles observed in the ALICE acceptance. The measured cross sections σ(γ+p→J/ψ+p) are 33.2±2.2(stat)±3.2(syst)±0.7(theor)  nb in p−Pb and 284±36(stat)+27−32(syst)±26(theor)  nb in Pb−p collisions. We measure this process up to about 700 GeV in the γp center of mass, which is a factor of two larger than the highest energy studied at HERA. The data are consistent with a power law dependence of the J/ψ photoproduction cross section in γp energies from about 20 to 700 GeV, or equivalently, from Bjorken x scaling variable between ∼2×10−2 and ∼2×10−5, thus indicating no significant change in the gluon density behavior of the proton between HERA and LHC energies.

U2 - 10.1103/PhysRevLett.113.232504

DO - 10.1103/PhysRevLett.113.232504

M3 - Journal article

C2 - 25526123

VL - 113

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

M1 - 232504

ER -

ID: 128726294