1D and 2DΞ_(b)andΛ_(b)baryons  

作　　者：Guo-Liang Yu Zhi-Gang Wang Xiu-Wu Wang 于国梁;王志刚;王修武(Department of Mathematics and Physics,North China Electric power university,Baoding 071003,China)

机构地区：[1]Department of Mathematics and Physics,North China Electric power university,Baoding 071003,China

出　　处：《Chinese Physics C》2022年第9期20-35,共16页中国物理C（英文版）

基　　金：the Fundamental Research Funds for the Central Universities(016MS133);Natural Science Foundation of HeBei Province(A2018502124)。

摘　　要：Recently,scientists have achieved significant progress in experiments searching for excitedΞ_(b)andΛ_(b)baryons such asΛ_(b)(6072),Λ_(b)(6146),Λ_(b)(6152),Ξ_(b)(6227),Ξ_(b)(6100),Ξ_(b)(6327),andΞ_(b)(6333).Motivated by these achievements,we systematically analyze the 1D and 2D states ofΞ_(b)andΛ_(b)baryons using the method of quantum chromodynamics sum rules.By constructing three types of interpolating currents,we calculate the masses and pole residues of these heavy baryons with different excitation modes:(L_(ρ),L_(λ))=(0,2),(2,0),and(1,1).Subsequently,we decode the inner structures ofΛ_(b)(6146),Λ_(b)(6152),Ξ_(b)(6327),andΞ_(b)(6333)and favor assigning these states as the 1D baryons with the quantum numbers(L_(ρ),L_(λ))=(0,2)and 3/2^(+),5/2^(+),3/2^(+),and 5/2^(+),respectively.In addition,the predictions for the masses and pole residues of the other 1D and 2DΞ_(b)andΛ_(b)baryons in this paper will be useful for studying D-wave bottom baryons in the future.

关 键 词：sum rules BARYONS excited states 

分 类 号：O572.34[理学—粒子物理与原子核物理]