Photoproduction of quarkonium in proton-proton and nucleus-nucleus collisions.
Photoproduction of quarkonium in proton-proton and nucleus-nucleus collisions.
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DOI：
10.1103/physrevlett.92.142003
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发表时间：
2003-11
影响因子：
8.6
通讯作者：
S. Klein;J. Nystrand
中科院分区：
文献类型：
--
作者：
S. Klein;J. Nystrand
我们讨论了在高能pp，pp和重离子对撞机上光生Upperdum和J/psi。我们预测在费米实验室的Tevatron和在欧洲核子研究中心的大型强子对撞机的PP和重离子相互作用的PP相互作用的大速率。J/psi也在相对论重离子对撞机中大量产生。这些反应可以用来研究质子和重核中的胶子分布。我们还表明，不同的CP对称性的初始状态导致在pp与pp碰撞中产生的介子的横动量谱的大的差异。
We discuss the photoproduction of Upsilon and J/psi at high energy pp, pp, and heavy ion colliders. We predict large rates in pp interactions at the Fermilab Tevatron and in pp and heavy ion interactions at the CERN Large Hadron Collider. The J/psi is also produced copiously at the Relativistic Heavy Ion Collider. These reactions can be used to study the gluon distribution in protons and heavy nuclei. We also show that the different CP symmetries of the initial states lead to large differences in the transverse momentum spectra of mesons produced in pp vs pp collisions.