LHCb gets closer to discovering the second doubly charmed baryon

作     者：Marek Karliner Jonathan L.Rosner Marek Karliner;Jonathan L.Rosner

作者机构：School of Physics and AstronomyTel Aviv UniversityTel Aviv 69978Israel Enrico Fermi Institute and Department of PhysicsUniversity of ChicagoChicagoIL 60637USA 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2020年第63卷第2期

页      面：25-26页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

主　　题：doubly closer LHCb 

摘      要：Recently the LHCb Collaboration [1] published the results of a search for the doubly charmed baryon ■. No significant signal is seen in the mass range from 3.4 to3.8 Ge V. To put this result in context, the ■baryon was seen by LHCb in decay modes ΛcK-π^+π^+[2](2017) and ■^+cπ^+[3](2018). The weighted average of the ■^++cc mass is 3621.24±0.65 (stat.)±0.31 (syst.) MeV [3].