Direct hadron production in hadronic collisions

详细信息    查看全文

• 作者：Franç ; ois Arleo ; Stanley J. Brodsky ; Dae Sung Hwang ; Anne M. Sickles
• 关键词：hadron production ; higher twist ; hadronic colliders
• 刊名：Nuclear Physics B - Proceedings Supplements
• 出版年：2010
• 出版时间：October-November 2010
• 年：2010
• 卷：207-208
• 期：Complete
• 页码：81-84
• 全文大小：237 K

文摘

The scaling behavior of the invariant production cross section is a powerful tool in order to probe the dynamics of particle production. Here, we investigate the scaling properties of large-p hadron, jet and prompt photon production in hadronic collisions by comparing systematically world data to NLO QCD predictions. In the hadron sector a significant discrepancy is reported, while prompt photon and jet production data prove in agreement with leadingtwist expectations. We interpret these results as coming from a non-negligible contribution of higher-twist processes, in which the hadron is produced directly in the hard subprocess. Predictions at RHIC are successfully compared to PHENIX preliminary measurements and LHC predictions are given.