X0(2900)and X1(2900):Hadronic Molecules or Compact Tetraquarks

作     者：陈华星 陈伟 董瑞瑞 苏妞 Hua-Xing Chen;Wei Chen;Rui-Rui Dong;Niu Su

作者机构：School of PhysicsSoutheast UniversityNanjing 210094China School of PhysicsSun Yat-Sen UniversityGuangzhou 510275China School of PhysicsBeihang UniversityBeijing 100191China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2020年第37卷第10期

页      面：12-16页

核心收录：

学科分类：07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070202[理学-粒子物理与原子核物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China(Grant Nos.11722540 and 12075019) the Fundamental Research Funds for the Central Universities 

主　　题：quark wave state 

摘      要：Very recently the LHCb collaboration reported their observation of the first two fully open-flavor tetraquark states,the X 0(2900)of J P=0^+and the X 1(2900)of J P=1^−.We study their possible interpretations using the method of QCD sum rules,paying special attention to an interesting feature of this experiment that the higher resonance X 1(2900)has a width significantly larger than the lower one X 0(2900).Our results suggest that the X 0(2900)can be interpreted as the s-wave D∗−K∗+molecule state of J P=0^+,and the X 1(2900)can be interpreted as the p-wave¯c¯s u d compact tetraquark state of J P=1^−.Mass predictions of their bottom partners are also given.