Next-to-leading-order relativistic and QCD corrections to prompt J/ψpair photoproduction at future e^(+)e^(−)colliders  

作　　者：Zhi-Guo He Xiao-Bo Jin Bernd A.Kniehl Rong Li 何志国;金小博;李荣

机构地区：[1]Department of Physics and Electronics,School of Mathematics and Physics,Beijing University of Chemical Technology,Beijing 100029,China [2]II.Institut für Theoretische Physik,Universität Hamburg,Luruper Chaussee 149,22761 Hamburg,Germany [3]Institut für Theoretische Physik,Universität Regensburg,93040 Regensburg,Germany [4]Center of Advanced Quantum Studies,Department of Physics,Beijing Normal University,Beijing 100875,China [5]MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter,School of Physics,Xi’an Jiaotong University,Xi’an 710049,China [6]Institute of Theoretical Physics,Xi’an Jiaotong University,Xi’an 710049,China

出　　处：《Chinese Physics C》2024年第8期104-112,共9页中国物理C（英文版）

基　　金：Supported in part by the German Research Foundation DFG through Research Unit FOR 2926"Next Generation Perturbative QCD for Hadron Structure:Preparing for the Electron-Ion Collider"(409651613);National Natural Science Foundation of China(12061131006);National Natural Science Foundation of China(U1832160,12075177)。

摘　　要：Within the framework of nonrelativistic-QCD factorization,we calculate both the next-to-leading-order relativistic and QCD corrections to prompt J/ψpair production,with feed-down fromψ(2S)mesons,via photon-photon collisions at future e^(+)e^(−)colliders,including the Future Circular Lepton Collider(FCC-ee),the Circular Electron Positron Collider(CEPC),and the Compact Linear Collider(CLIC).We present total cross sections and distributions in single J/ψtransverse momentum and rapidity,as well as in J/ψpair invariant mass.The relativistic and QCD corrections both turn out to be large and negative.However,the production rates are large enough for useful experimental studies.

关 键 词：heavy quarkonium perturbative calculation two-photon collisions 

分 类 号：O572.243[理学—粒子物理与原子核物理]