Induced Fission-Like Process of Hadronic Molecular States  

作　　者：Jun He Dian-Yong Chen Zhan-Wei Liu Xiang Liu 何军;陈殿勇;刘占伟;刘翔(School of Physics,Northwest University,Xi’an 710127,China;Optical Sciences Group,Department of Fundamental and Theoretical Physics,Research School of Physics,The Australian National University,Canberra ACT 2600,Australia;Shaanxi Key Laboratory for Theoretical Physics Frontiers,Xi’an 710127,China;NSFC-SPTP Peng Huanwu Center for Fundamental Theory,Xi’an 710127,China)

机构地区：[1]School of Physics,Northwest University,Xi’an 710127,China [2]Optical Sciences Group,Department of Fundamental and Theoretical Physics,Research School of Physics,The Australian National University,Canberra ACT 2600,Australia [3]Shaanxi Key Laboratory for Theoretical Physics Frontiers,Xi’an 710127,China [4]NSFC-SPTP Peng Huanwu Center for Fundamental Theory,Xi’an 710127,China

出　　处：《Chinese Physics Letters》2022年第9期6-9,共4页中国物理快报（英文版）

基　　金：supported by the China National Funds for Distinguished Young Scientists(Grant No.11825503);the National Key Research and Development Program of China(Grant No.2020YFA0406400);the 111 Project(Grant No.B20063);the National Natural Science Foundation of China(Grant Nos.12047501,12175091,11965016,11775050,and 11775050);CAS Interdisciplinary Innovation Team,and the Fundamental Research Funds for the Central Universities(Grant No.lzujbky-2021-sp24)。

摘　　要：We predict a new physical phenomenon,induced fission-like process and chain reaction of hadronic molecular states.As a molecular state,if induced by a D meson,the X(3872)can split into D■final state which is forbidden due to the spin-parity conservation.The breeding of the D meson of the reaction,such as D^(0)X(3872)→D^(0)■0D^(0),makes the chain reaction of X(3872)matter possible.We estimate the cross section of the D meson induced fission-like process of X(3872)into two D mesons.With very small D^(0) beam momentum of 1 e V,the total cross section reaches an order of 1000 b,and decreases rapidly with the increasing beam momentum.With the transition of D^(*)meson in molecular states to a D meson,the X(3872)can release large energy,which is acquired by the final mesons.The momentum distributions of the final D mesons are analyzed.In the laboratory frame,the spectator D meson in molecular state concentrates in the low momentum area.The energy from the transition from D^(*)to D meson is mainly acquired by two scattered D mesons.The results suggest that the D meson environment will lead to the induced fission-like process and chain reaction of the X(3827).Such a phenomenon can be extended to other hadronic molecular states.

关 键 词：MESON MOMENTUM BEAM 

分 类 号：O571.43[理学—粒子物理与原子核物理]