Semi-inclusive lepto-production of hidden-charm exotic hadrons  

作　　者：Zhi Yang Feng-Kun Guo 杨智;郭奉坤(School of Physics,University of Electronic Science and Technology of China,Chengdu 610054,China;Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;CAS Key Laboratory,of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]School of Physics,University of Electronic Science and Technology of China,Chengdu 610054,China [2]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [3]CAS Key Laboratory,of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China [4]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Physics C》2021年第12期1-7,共7页中国物理C（英文版）

基　　金：Supported in part by the Chinese Academy of Sciences(CAS)(XDB34030000,QYZDB-SSW-SYS013);the National Natural Science Foundation of China(NS-FC)(11835015,12047503,11961141012,11847301);the Fundamental Research Funds for the Central Universities(2019CDJDWL0005);NSFC and the Deutsche Forschungsgemeinschaft(DFG)through the Sino-German Collaborative Research Center"Symmetries and the Emergence of Structure in QCD"(NSFC 12070131001,DFG Project-ID 196253076-TRR110)。

摘　　要：We investigate the semi-inclusive production of hidden-charm exotic states,including the X(3872),Z_(c),Zcs and pentaquark P_(c) states,in lepton-proton scattering processes.These hadrons are close to the thresholds of a pair of charm and anticharm hadrons and are assumed to possess a hadronic molecular structure as their main feature.To provide order-of-magnitude estimates of the cross sections,we use Pythia to simulate the short-distance productions of the constituent hadrons,which then rescatter to form exotic hadrons.The estimates for the X(3872)and Z_(c)(3900)^(±)states are not in conflict with the upper limits measured in the COMPASS experiment for the exclusive photoproduction process.The results indicate that the considered hidden-charm states can be copiously produced at the proposed electron-ion colliders EicC and US-EIC.

关 键 词：hidden-charm exotic hadrons lepto-production 

分 类 号：O572.3[理学—粒子物理与原子核物理]