Double Diffractive Process Factorization from ηc and γ Associated Production at Tevatron and LHC  

作　　者：YANZhan-Yuan LIZhi-Wen DUANChun-Gui 

机构地区：[1]DepartmentofAppliedPhysics,NorthChinaElectricPowerUniversity,Baoding071003,China [2]ChengdeTeachers'CollegeforNationalities,Chengde067000,China [3]InstituteofHighEnergyPhysics,theChineseAcademyofSciences,Beijing100039,China

出　　处：《Communications in Theoretical Physics》2004年第3X期389-393,共5页理论物理通讯（英文版）

基　　金：国家自然科学基金，河北省自然科学基金，华北电力大学校科研和教改项目

摘　　要：We present a study of associated ηc and γ double diffractive production in p-p collision based on Ingelman-Schlein model, and the framework of non-relativistic QCD factorization formalism for quarkonia production. The predic-tion of ηc and γ is more reliable than J/ψ production, because the associated ηc and γ production is a pure color-octetprocess, and the dominant contribution comes from color octet 1So(8) subprocess, which is related to the color octet matrixelement of 1So(8) of J/ψ by the heavy quark spin symmetry and the large PT J/ψ production data. We find that the ratioof diffractive to inclusive cross sections is independent of the values of color octet matrix elements, but is sensitive to thegluon factor of the Pomeron and renormalized Pomeron flux factors. So experimental measurement of this ratio can giveus more information of the nature of Pomeron and test the assumption of hard diffractive factorization in hadron-hadron collisions.

关 键 词：强子-强子碰撞 双衍射过程 因式分解 坡密子 色八重态 量子色动力学 

分 类 号：O572.33[理学—粒子物理与原子核物理]