Searching for a_(0)(980)-meson parton distribution function  

作　　者：Zai-Hui Wu Hai-Bing Fu Tao Zhong Yu Chen Ya-Hong Dai 

机构地区：[1]Department of Physics,Guizhou Minzu University,Guiyang 550025,China

出　　处：《Communications in Theoretical Physics》2023年第8期111-118,共8页理论物理通讯（英文版）

基　　金：supported in part by the National Natural Science Foundation of China under Grant No.12265010,No.12265009;the Project of Guizhou Provincial Department of Science and Technology under Grant No.ZK[2021]024;the Project of Guizhou Provincial Department of Education under Grant No.KY[2021]030。

摘　　要：In this paper,we calculate the scalar a_(0)(980)-meson leading-twist wave function by using the light-cone harmonic oscillator model(LCHO),where the model parameters are determined by fitting theξ-moments■of its light-cone distribution amplitudes.Then,the a_(0)(980)-meson leading-twist light-cone distribution amplitudes with three different scalesζ=(1.0,2.0,5.2)Ge V are given.After constructing the relationship between the a_(0)(980)-meson leading-twist parton distribution functions/valence quark distribution function and its LCHO wave function,we exhibit the■(x,ζ)and■(x,ζ)with different scales.Furthermore,we also calculate the Mellin moments of the a_(0)(980)-meson’s valence quark distribution function■with n=(1,2,3),i.e.■=0.027,■=0.018 and■=0.013.Finally,the scale evolution for the ratio of the Mellin moments x■are presented.

关 键 词：parton distribution functions light-cone distribution amplitudes light scalar meson light-cone harmonic oscillator model 

分 类 号：O572.33[理学—粒子物理与原子核物理]