On theoretical uncertainty of color dipole phenomenology in the $J/\psi $ and $\Upsilon$ photoproduction in pA and AA collisions at the CERN Large Hadron Collider
On theoretical uncertainty of color dipole phenomenology in the $J/\psi $ and $\Upsilon$ photoproduction in pA and AA collisions at the CERN Large Hadron Collider
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DOI：
10.1088/0954-3899/42/10/105001
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发表时间：
2014-11
期刊：
影响因子：
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通讯作者：
G. Santos;M. Machado
中科院分区：
文献类型：
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作者：
G. Santos;M. Machado
我们研究了彩色偶极形式主义中大型强子对撞机 (LHC) 质子-核和核-核碰撞中光产生和 ϒ 态预测的理论不确定性。提出了速度分布的预测，并分析了对介子波函数、重夸克质量以及偶极子截面模型的依赖性。我们将理论结果直接与 ALICE 合作组织关于每核子对质心能量为 5.02 TeV 的 pPb 碰撞和每核子对质心能量为 2.76 TeV 的 PbPb 碰撞的最新数据进行比较。还对 LHC 能量下 PbPb 和 pPb 碰撞中的 ϒ 态进行了预测，包括相干和非相干贡献。
We investigate the theoretical uncertainty of the predictions for the photoproduction of and ϒ states in proton–nucleus and nucleus–nucleus collisions at the Large Hadron Collider (LHC) within the color dipole formalism. Predictions for the rapidity distributions are presented and the dependence on the meson wavefunction, heavy quark mass as well as the models for the dipole cross section are analyzed. We compare the theoretical results directly with recent data from the ALICE Collaboration on production in pPb collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV and in PbPb collisions at a centre-of-mass energy per nucleon pair of 2.76 TeV. Predictions are also performed for ϒ state in PbPb and pPb collisions at LHC energies, including the coherent and incoherent contributions.