Journal Article

FZJ-2021-02197

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Where Is the Lightest Charmed Scalar Meson?

Du, M.-L. (Corresponding author) ; Guo, F.-K. ; Hanhart, C.FZJ* ; Kubis, B. ; Meißner, U.-G.FZJ*

2021
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/27870  doi:10.1103/PhysRevLett.126.192001

Abstract: 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+π−π−. 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 Dπ phase of the decay B−→D+π−π− from the data in a model-independent way, and show that its difference from the Dπ scattering phase shift can be traced back to an intermediate ρ− 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 f0(500) and K∗0(700)

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)

Research Program(s):

1. 511 - Enabling Computational- & Data-Intensive Science and Engineering (POF4-511) (POF4-511)

Appears in the scientific report 2021

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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