Dihadron momentum imbalance and correlations in d+Au collisions

作者：Kang, Zhong-Bo^*; Vitev, Ivan; Xing, Hongxi

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2012, 85(5): 054024.

DOI：10.1103/PhysRevD.85.054024

• ENERGY-LOSS

We calculate in perturbative QCD the transverse momentum imbalance of dijet and dihadron production in high-energy p + A (d + A) collisions. We evaluate the effect of both initial- and final-state multiple scattering, which determines the strength of this transverse momentum imbalance. Combining this new result with the suppression of the cross section in d + Au collisions, which arises from cold nuclear matter energy loss and coherent power corrections, we are able to describe the dihadron correlations measured by both PHENIX and STAR collaborations at RHIC, including mid-mid, mid-forward, and forward-forward rapidity hadron pairs.

• 出版日期2012-3-28
• 单位华中师范大学; Los Alamos; RIKEN