Triangle singularity in the B--> K- pi X-0 (3872) reaction and sensitivity to the X(3872) mass

doi:10.1103/PhysRevD.101.054030

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	Triangle singularity in the B--> K- pi X-0 (3872) reaction and sensitivity to the X(3872) mass
	Sakai, Shuntaro ; Oset, Eulogio 1,2; Guo, Feng-Kun
刊名	PHYSICAL REVIEW D
	2020
卷号	101 期号:5 页码:54030
关键词	ISOSPIN ANALYSIS BREAKING
ISSN号	2470-0010
DOI	10.1103/PhysRevD.101.054030
英文摘要	We have done a study of the B--> K-pi X-0(3872) reaction by means of a triangle mechanism via the chain of reactions: B--> K-D(0);(D) over bar(0); D(0)-> pi D-0(0); D-0(D) over bar(0)-> X(3872). We show that this mechanism generates a triangle singularity in the pi X-0(3872) invariant mass for a very narrow window of the X(3872) mass, around the present measured values, and show that the peak positions and the shape of the mass distributions arc sensitive to the X(3872) mass, such that a measurement of the reaction can serve to improve on the present values of this mass. In particular, we point out that the X(3872) mass relative to the D-0(D) over bar*(0) threshold may be extracted from the asymmetry of the pi X-0 line shape.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27124]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China 2.Ctr Mixto Univ Valencia, CSIC Inst Invest Paterna, Dept Fis Teor, Aptdo 22085, Valencia 46071, Spain 3.Ctr Mixto Univ Valencia, CSIC Inst Invest Paterna, IFIC, Aptdo 22085, Valencia 46071, Spain 4.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Sakai, Shuntaro,Oset, Eulogio,Guo, Feng-Kun. Triangle singularity in the B--> K- pi X-0 (3872) reaction and sensitivity to the X(3872) mass[J]. PHYSICAL REVIEW D,2020,101(5):54030.
APA	Sakai, Shuntaro,Oset, Eulogio,&Guo, Feng-Kun.(2020).Triangle singularity in the B--> K- pi X-0 (3872) reaction and sensitivity to the X(3872) mass.PHYSICAL REVIEW D,101(5),54030.
MLA	Sakai, Shuntaro,et al."Triangle singularity in the B--> K- pi X-0 (3872) reaction and sensitivity to the X(3872) mass".PHYSICAL REVIEW D 101.5(2020):54030.