Double heavy tri-hadron bound state via delocalized π bond

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英文篇名：Double heavy tri-hadron bound state via delocalized π bond 作者：马力 ; 王倩 ; Ulf-G.Meiβner 英文作者：Li Ma;Qian Wang;Ulf-G.Meiβner;Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics,Universit?t Bonn;Institut für Kernphysik, Institute for Advanced Simulation, and Jülich Center for Hadron Physics Forschungszentrum; 英文关键词：three-body system;;molecular state;;Schrdinger equation 中文刊名：KNWL 英文刊名：中国物理C 机构：Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics,Universit?t Bonn;Institut für Kernphysik, Institute for Advanced Simulation, and Jülich Center for Hadron Physics Forschungszentrum; 出版日期：2019-01-15 出版单位：Chinese Physics C 年：2019 期：v.43 基金：Supported by the DFG(TR110)and the NSFC(11621131001);; funds provided to the Sino-German CRC 110 “Symmetries and the Emergence of Structure in QCD”;; supported by the Chinese Academy of Sciences(CAS)President’s International Fellowship Initiative(PIFI)(2018DM0034);; VolkswagenStiftung(93562) 语种：英文; 页：KNWL201901012 页数：7 CN：01 ISSN：11-5641/O4 分类号：100-106

摘要

The number of exotic candidates that are beyond the conventional quark model has increased dramatically over recent decades.Some of these can be viewed as analogues of the deuteron.Similarly,the existence of the triton indicates that bound states formed by three hadrons could also exist.To illustrate this possibility,we study the DD~*K and■systems using the Born-Oppenheimer approximation.To leading order,only one-pion exchange potentials are considered.This means that the three constituents share one virtual pion.This is similar to the role of the delocalizedπbond for the formation of benzene in chemistry.After solving the Schr?dinger equation,we find two three-body DD~*K and■ bound states with masses 4317.92~_(-6.55)(+6.13)Me V and11013.65_(-8.84)~(+8.49)Me V,respectively.The masses of their ■and■ analogues are 4317.92~_(-6.55)(+6.13)Me V and11013.65_(-9.02)~(+8.68)Me V,respectively.From the experimental side,the ■bound state could be found by analyzing the current world data on the B→J/ψππKprocess,by focusing on the J/ψπK channel.
        Abstract:The number of exotic candidates that are beyond the conventional quark model has increased dramatically over recent decades.Some of these can be viewed as analogues of the deuteron.Similarly,the existence of the triton indicates that bound states formed by three hadrons could also exist.To illustrate this possibility,we study the DD~*K and ■ systems using the Born-Oppenheimer approximation.To leading order,only one-pion exchange potentials are considered.This means that the three constituents share one virtual pion.This is similar to the role of the delocalizedπbond for the formation of benzene in chemistry.After solving the Schr?dinger equation,we find two three-body DD~*K and ■bound states with masses4317.92_(-4.32)~(+3.66)Me V and 11013.65_(-8.84)~(+8.49)Me V,respectively.The masses of their■and■ analogues are 4317.92~_(-6.55)(+6.13)Me V and 11013.65_(-9.02)~(+8.68)Me V,respectively.From the experimental side,the ■bound state could be found by analyzing the current world data on the B→J/ψππKprocess,by focusing on the J/ψπK channel.

引文

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