Accessing transverse nucleon and gluon distributions in heavy nuclei using coherent vector meson photoproduction at high energies in ion ultraperipheral collisions

Guzey V.; Strikman M.; Zhalov M.

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Accessing transverse nucleon and gluon distributions in heavy nuclei using coherent vector meson photoproduction at high energies in ion ultraperipheral collisions

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摘要

By using the theoretical approaches that describe well the available data on t-integrated coherent photoproduction of light and heavy vector mesons in Pb-Pb ultraperipheral collisions (UPCs) at the Large Hadron Collider (LHC) in Run 1, we calculate the momentum transfer distributions for this process for. and J/psi vector mesons in the kinematics of Run 2 at the LHC. We demonstrate that nuclear shadowing not only suppresses the absolute value of the cross sections but also shifts the momentum transfer distributions toward smaller values of the momentum transfer vertical bar t vertical bar. This result can be interpreted as a broadening in the impact parameter space of the effective nucleon density in nuclei by 14 in the case of rho and the nuclear gluon distribution by 5-11 in the case of J/psi.

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《Physical review, C》 |2017年第2期|共7页
作者
Guzey V.; Strikman M.; Zhalov M.;
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作者单位

PNPI, Kurchatov Inst, Natl Res Ctr, Gatchina 188300, Russia;

Penn State Univ, Dept Phys, State Coll, PA 16802 USA;

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正文语种英语
中图分类原子核物理学、高能物理学;
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3. Coherent gluon production in very-high-energy heavy-ion collisions - art. no. 192302 [J] . Krasnitz A., Venugopalan R., Nara Y. Physical review letters . 2001,第19期

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4. Photoproduction de Mesons sur le Nucleon aux Energies Intermediaire (in French) [O] . Guidal, Michel 1996

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Accessing transverse nucleon and gluon distributions in heavy nuclei using coherent vector meson photoproduction at high energies in ion ultraperipheral collisions

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