D^0D^^0*(D^0D^0*) system in QCD-improved many body potential

查看全文 作　　者：M.Imran [1]Jamil;Bilal [2]Masud;Faisal [2]Akram;S.M.Sohail [2]Gilani 机构地区：[1]University of Management and Technology, Lahore, Pakistan;[2]Centre For High Energy Physics, Punjab University, Lahore(54590), Pakistan 出　　处：《Chinese Physics C》索引2017年第41卷第1期,共12页 基　　金：support of PU research (D/605/Est.I Sr. 20 Project 2014-15, D/34/Est.1 Sr. 109 Project 2013-14);the Higher Education Commission (HEC) of Pakistan for its financial support through (17-5-4(Ps3-128) HEC/Sch/2006) 摘　　要：For a system of current interest(composed of charm, anticharm and a pair of light quarks), we show trends in phenomenological implications of QCD-based improvements to a simple quark model treatment. We employ a resonating group method to render this difficult four-body problem manageable. We use a quadratic confinement so as to be able to improve beyond the Born approximation. We report the position of the pole corresponding to the D^0D^(0*) molecule for the best fit of a model parameter to the relevant QCD simulations. We point out the interesting possibility that the pole can be shifted to 3872 Me V by introducing another parameter I_0 that changes the strength of the interaction in this one component of X(3872). The revised value of this second parameter can guide future trends in modeling of the full exotic meson X(3872). We also report the changes with I_0 in the S-wave spin averaged cross sections for D^0D^(0*)-→ωJ/ψ and D^0D^(0*)-→ρJ/ψ. These cross sections are important regarding the study of QGP(quark gluon plasma). 关 键 词：QCD 夸克胶子等离子体 多体 系统 Born近似 相互作用强度 极点位置 动力学模拟