ITP OpenIR  > SCI期刊论文
Sakai, Shuntaro; Guo, Feng-Kun; Kubis, Bastian2,3
Extraction of N D scattering lengths from the Lambda(b) -> pi(-)pD(0) decay and properties of the Sigma(c)(2800)(+)
Source PublicationPHYSICS LETTERS B
Language英语
KeywordCOUPLED-CHANNEL HEAVY BARYONS CHIRAL DYNAMICS QUARK-MODEL S-WAVE CUSPS RESONANCES CHARM
AbstractThe 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.
2020
ISSN0370-2693
Volume808Pages:135623
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27255
CollectionSCI期刊论文
Affiliation1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
3.Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany
4.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany
Recommended Citation
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.
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