Where Is the Lightest Charmed Scalar Meson?

doi:10.1103/PhysRevLett.126.192001

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	Where Is the Lightest Charmed Scalar Meson?
	Du, Meng-Lin ; Guo, Feng-Kun ; Hanhart, Christoph ; Kubis, Bastian ; Meissner, Ulf-G
刊名	PHYSICAL REVIEW LETTERS
	2021
卷号	126 期号:19 页码:192001
关键词	HEAVY MESONS QUARK-MODEL SCATTERING AMPLITUDES RESONANCE DECAYS MASSES STATES
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.126.192001
英文摘要	The lightest charmed scalar meson is known as the D-0(2300), which is one of the earliest new hadron resonances observed at modern B factories. We show here that the parameters assigned to the lightest scalar D meson are in conflict with the precise LHCb data of the decay B- -> D+pi(-) pi(-) . On the contrary, these data can be well described by an unitarized chiral amplitude containing a much lighter charmed scalar meson, the D-0(2100). We also extract the low-energy S-wave D pi phase of the decay B- -> D+pi(-) pi(-) - from the data in a model-independent way, and show that its difference from the D pi scattering phase shift can be traced back to an intermediate rho(-) exchange. Our work highlights that an analysis of data consistent with chiral symmetry, unitarity, and analyticity is mandatory in order to extract the properties of the ground-state scalar mesons in the singly heavy sector correctly, in analogy to the light scalar mesons f(0) (500) and K-0*(700).
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27538]
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.[Du, Meng-Lin 2.Kubis, Bastian 3.Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany 4.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 7.[Hanhart, Christoph 8.Forschungszentrum Julich, Inst Kernphys, Inst Adv Simulat, D-52425 Julich, Germany 9.Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany 10.Tbilisi State Univ, GE-0186 Tbilisi, Georgia
推荐引用方式 GB/T 7714	Du, Meng-Lin,Guo, Feng-Kun,Hanhart, Christoph,et al. Where Is the Lightest Charmed Scalar Meson?[J]. PHYSICAL REVIEW LETTERS,2021,126(19):192001.
APA	Du, Meng-Lin,Guo, Feng-Kun,Hanhart, Christoph,Kubis, Bastian,&Meissner, Ulf-G.(2021).Where Is the Lightest Charmed Scalar Meson?.PHYSICAL REVIEW LETTERS,126(19),192001.
MLA	Du, Meng-Lin,et al."Where Is the Lightest Charmed Scalar Meson?".PHYSICAL REVIEW LETTERS 126.19(2021):192001.