Extraction of N D scattering lengths from the Lambda(b) -> pi(-)pD(0) decay and properties of the Sigma(c)(2800)(+)

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Extraction of N D scattering lengths from the Lambda(b) -> pi(-)pD(0) decay and properties of the Sigma(c)(2800)(+)
	Sakai, Shuntaro ; Guo, Feng-Kun ; Kubis, Bastian 1,4
刊名	PHYSICS LETTERS B
	2020
卷号	808 页码:135623
关键词	COUPLED-CHANNEL HEAVY BARYONS CHIRAL DYNAMICS QUARK-MODEL S-WAVE CUSPS RESONANCES CHARM
ISSN号	0370-2693
英文摘要	The isovector and isoscalar NDs-wave scattering lengths are extracted by fitting to the LHCb data of the pD(0) invariant-mass distribution in the decay Lambda(b) -> pi(-) pD(0), making use of the cusp effect at the nD(+) threshold. The analysis is based on a coupled-channel nonrelativistic effective field theory. We find that the real part of the isovector ND scattering length is unnaturally large due to the existence of a near-threshold state with a mass around 2.8GeV. The state is consistent with the Sigma(c)(2800)(+) resonance observed at Belle. Our results suggest that it couples strongly to the ND channel in an s-wave, and that its quantum numbers are J(P)= 1/2(-). The strong cusp behavior at the nD(+) threshold can be verified using updated LHCb data. (C) 2020 The Author(s). Published by Elsevier B.V.
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27255]
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.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 2.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany
推荐引用方式 GB/T 7714	Sakai, Shuntaro,Guo, Feng-Kun,Kubis, Bastian. Extraction of N D scattering lengths from the Lambda(b) -> pi(-)pD(0) decay and properties of the Sigma(c)(2800)(+)[J]. PHYSICS LETTERS B,2020,808:135623.
APA	Sakai, Shuntaro,Guo, Feng-Kun,&Kubis, Bastian.(2020).Extraction of N D scattering lengths from the Lambda(b) -> pi(-)pD(0) decay and properties of the Sigma(c)(2800)(+).PHYSICS LETTERS B,808,135623.
MLA	Sakai, Shuntaro,et al."Extraction of N D scattering lengths from the Lambda(b) -> pi(-)pD(0) decay and properties of the Sigma(c)(2800)(+)".PHYSICS LETTERS B 808(2020):135623.