Probing Small Bjorken-x Nuclear Gluonic Structure via Coherent J=ψ Photoproduction in Ultraperipheral Pb-Pb Collisions at √sNN = 5.02 TeV

CMS Collaboration

doi:10.1103/PhysRevLett.131.262301

Probing Small Bjorken-x Nuclear Gluonic Structure via Coherent J=ψ Photoproduction in Ultraperipheral Pb-Pb Collisions at √s_NN = 5.02 TeV

CMS Collaboration

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科研成果: 期刊稿件 › 文章 › 同行评审

57 引用（Scopus）

摘要

Quasireal photons exchanged in relativistic heavy ion interactions are powerful probes of the gluonic structure of nuclei. The coherent J=ψ photoproduction cross section in ultraperipheral lead-lead collisions is measured as a function of photon-nucleus center-of-mass energies per nucleon (W^Pb _γN) over a wide range of 40 < W^Pb _γN < 400 GeV. Results are obtained using data at the nucleon-nucleon center-of-mass energy of 5.02 TeV collected by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 1.52 nb⁻¹. The cross section is observed to rise rapidly at low W^Pb _γN, and plateau above W^Pb _γN ≈ 40 GeV, up to 400 GeV, entering a new regime of small Bjorken-x (≈6 × 10⁻⁵) gluons being probed in a heavy nucleus. The observed energy dependence is not predicted by current quantum chromodynamic models.

源语言	英语
文章编号	262301
期刊	Physical Review Letters
卷	131
期	26
DOI	https://doi.org/10.1103/PhysRevLett.131.262301
出版状态	已出版 - 29 12月 2023

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10.1103/PhysRevLett.131.262301

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@article{3cada7a879e24f37a53cc42112cfba31,

title = "Probing Small Bjorken-x Nuclear Gluonic Structure via Coherent J=ψ Photoproduction in Ultraperipheral Pb-Pb Collisions at √sNN = 5.02 TeV",

abstract = "Quasireal photons exchanged in relativistic heavy ion interactions are powerful probes of the gluonic structure of nuclei. The coherent J=ψ photoproduction cross section in ultraperipheral lead-lead collisions is measured as a function of photon-nucleus center-of-mass energies per nucleon (WPb γN) over a wide range of 40 < WPb γN < 400 GeV. Results are obtained using data at the nucleon-nucleon center-of-mass energy of 5.02 TeV collected by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 1.52 nb−1. The cross section is observed to rise rapidly at low WPb γN, and plateau above WPb γN ≈ 40 GeV, up to 400 GeV, entering a new regime of small Bjorken-x (≈6 × 10−5) gluons being probed in a heavy nucleus. The observed energy dependence is not predicted by current quantum chromodynamic models.",

author = "\{CMS Collaboration\} and A. Tumasyan and W. Adam and Andrejkovic, \{J. W.\} and T. Bergauer and S. Chatterjee and K. Damanakis and M. Dragicevic and \{Escalante Del Valle\}, A. and Hussain, \{P. S.\} and M. Jeitler and N. Krammer and L. Lechner and D. Liko and I. Mikulec and J. Schieck and R. Sch{\"o}fbeck and D. Schwarz and M. Sonawane and S. Templ and W. Waltenberger and Wulz, \{C. E.\} and Darwish, \{M. R.\} and T. Janssen and T. Kello and \{Van Mechelen\}, P. and Bols, \{E. S.\} and J. D{\textquoteright}Hondt and \{De Moor\}, A. and M. Delcourt and \{El Faham\}, H. and S. Lowette and A. Morton and D. M{\"u}ller and Sahasransu, \{A. R.\} and S. Tavernier and \{Van Doninck\}, W. and \{Van Putte\}, S. and D. Vannerom and B. Clerbaux and S. Dansana and \{De Lentdecker\}, G. and L. Favart and D. Hohov and J. Jaramillo and K. Lee and M. Mahdavikhorrami and I. Makarenko and A. Malara and T. Cheng and L. Wang",

note = "Publisher Copyright: {\textcopyright} 2023 CERN, for the CMS Collaboration.",

year = "2023",

month = dec,

day = "29",

doi = "10.1103/PhysRevLett.131.262301",

language = "英语",

volume = "131",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "26",

}

TY - JOUR

T1 - Probing Small Bjorken-x Nuclear Gluonic Structure via Coherent J=ψ Photoproduction in Ultraperipheral Pb-Pb Collisions at √sNN = 5.02 TeV

AU - CMS Collaboration

AU - Tumasyan, A.

AU - Adam, W.

AU - Andrejkovic, J. W.

AU - Bergauer, T.

AU - Chatterjee, S.

AU - Damanakis, K.

AU - Dragicevic, M.

AU - Escalante Del Valle, A.

AU - Hussain, P. S.

AU - Jeitler, M.

AU - Krammer, N.

AU - Lechner, L.

AU - Liko, D.

AU - Mikulec, I.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Schwarz, D.

AU - Sonawane, M.

AU - Templ, S.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Darwish, M. R.

AU - Janssen, T.

AU - Kello, T.

AU - Van Mechelen, P.

AU - Bols, E. S.

AU - D’Hondt, J.

AU - De Moor, A.

AU - Delcourt, M.

AU - El Faham, H.

AU - Lowette, S.

AU - Morton, A.

AU - Müller, D.

AU - Sahasransu, A. R.

AU - Tavernier, S.

AU - Van Doninck, W.

AU - Van Putte, S.

AU - Vannerom, D.

AU - Clerbaux, B.

AU - Dansana, S.

AU - De Lentdecker, G.

AU - Favart, L.

AU - Hohov, D.

AU - Jaramillo, J.

AU - Lee, K.

AU - Mahdavikhorrami, M.

AU - Makarenko, I.

AU - Malara, A.

AU - Cheng, T.

AU - Wang, L.

PY - 2023/12/29

Y1 - 2023/12/29

N2 - Quasireal photons exchanged in relativistic heavy ion interactions are powerful probes of the gluonic structure of nuclei. The coherent J=ψ photoproduction cross section in ultraperipheral lead-lead collisions is measured as a function of photon-nucleus center-of-mass energies per nucleon (WPb γN) over a wide range of 40 < WPb γN < 400 GeV. Results are obtained using data at the nucleon-nucleon center-of-mass energy of 5.02 TeV collected by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 1.52 nb−1. The cross section is observed to rise rapidly at low WPb γN, and plateau above WPb γN ≈ 40 GeV, up to 400 GeV, entering a new regime of small Bjorken-x (≈6 × 10−5) gluons being probed in a heavy nucleus. The observed energy dependence is not predicted by current quantum chromodynamic models.

AB - Quasireal photons exchanged in relativistic heavy ion interactions are powerful probes of the gluonic structure of nuclei. The coherent J=ψ photoproduction cross section in ultraperipheral lead-lead collisions is measured as a function of photon-nucleus center-of-mass energies per nucleon (WPb γN) over a wide range of 40 < WPb γN < 400 GeV. Results are obtained using data at the nucleon-nucleon center-of-mass energy of 5.02 TeV collected by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 1.52 nb−1. The cross section is observed to rise rapidly at low WPb γN, and plateau above WPb γN ≈ 40 GeV, up to 400 GeV, entering a new regime of small Bjorken-x (≈6 × 10−5) gluons being probed in a heavy nucleus. The observed energy dependence is not predicted by current quantum chromodynamic models.

UR - https://www.scopus.com/pages/publications/85182298097

U2 - 10.1103/PhysRevLett.131.262301

DO - 10.1103/PhysRevLett.131.262301

M3 - 文章

C2 - 38215362

AN - SCOPUS:85182298097

SN - 0031-9007

VL - 131

JO - Physical Review Letters

JF - Physical Review Letters

IS - 26

M1 - 262301

ER -

Probing Small Bjorken-x Nuclear Gluonic Structure via Coherent J=ψ Photoproduction in Ultraperipheral Pb-Pb Collisions at √sNN = 5.02 TeV

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Probing Small Bjorken-x Nuclear Gluonic Structure via Coherent J=ψ Photoproduction in Ultraperipheral Pb-Pb Collisions at √s_NN = 5.02 TeV