New insight into the exotic states strongly coupled with the DD^(*)from the T_(cc)^(+)  

通过T_(cc)^(+)的研究得到与DD^(*)强耦合的奇特强子态的新内部图像

作　　者：Guang-Juan Wang Zhi Yang Jia-Jun Wu Makoto Oka Shi-Lin Zhu 王广娟;杨智;吴佳俊;Makoto Oka;朱世琳

机构地区：[1]KEK Theory Center,Institute of Particle and Nuclear Studies(IPNS),High Energy Accelerator Research Organization(KEK),Tsukuba 305-0801,Japan [2]School of Physics,University of Electronic Science and Technology of China,Chengdu 610054,China [3]School of Physical Sciences,University of Chinese Academy of Sciences(UCAS),Beijing 100049,China [4]Southern Center for Nuclear-Science Theory(SCNT),Institute of Modern Physics,Chinese Academy of Sciences,Huizhou 516000,China [5]Advanced Science Research Center,Japan Atomic Energy Agency,Tokai 319-1195,Japan [6]Nishina Center for Accelerator-Based Science,RIKEN,Wako 351-0198,Japan [7]School of Physics and Center of High Energy Physics,Peking University,Beijing 100871,China

出　　处：《Science Bulletin》2024年第19期3036-3041,共6页科学通报（英文版）

基　　金：supported by the KAKENHI(19H05159,20K03959,and 21H00132(M.O.),and 23K03427(M.O.and G.J.W),24K17055(G.J.W));the National Natural Science Foundation of China(12275046(Z.Y.),12175239 and 12221005(J.J.W),11975033 and 12070131001(S.L.Z.));the Natural Science Foundation of Sichuan Province(2022NSFSC1795(Z.Y.));the National Key R&D Program of China(2020YFA0406400(J.J.W));the Chinese Academy of Sciences(YSBR-101(J.J.W)).

摘　　要：We have investigated the internal structure of the open-and hidden-charmed(DD^(*)/DD^(*))molecules in the unified framework.We first fit the experimental lineshape of the Tt state and extract the DD^(*)interaction,from which the T is assumed to arise solely.Then we obtain the DD^(*)interaction by charge conjugation.Our results show that the DD*interaction is attractive but insufficient to form X(3872)as a bound state.Instead,its formation requires the crucial involvement of the coupled channel effect between the DD^(*)and cc components,although the cc accounts for approximately 1%only.Besides X(3872),we have obtained a higher-energy state around 3957.9 MeV with a width of 16.7 MeV,which may be a potential candidate for the X(3940).In J^(PC)=1^(+-)sector,we have found two states related to the iso-scalar X(3872)and h_(c)(2P),respectively.Our combined study provides valuable insights into the nature of these DD^(+)/DD^(+)exotic states.

关 键 词：Quark model Charmonium(-like)states Coupled-channel effect Exotic hadrons 

分 类 号：O572.33[理学—粒子物理与原子核物理]