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@ARTICLE{Du:892608,
      author       = {Du, Meng-Lin and Guo, Feng-Kun and Hanhart, Christoph and
                      Kubis, Bastian and Meißner, Ulf-G.},
      title        = {{W}here {I}s the {L}ightest {C}harmed {S}calar {M}eson?},
      journal      = {Physical review letters},
      volume       = {126},
      number       = {19},
      issn         = {1079-7114},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2021-02197},
      pages        = {192001},
      year         = {2021},
      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)},
      cin          = {IAS-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-4-20090406},
      pnm          = {511 - Enabling Computational- $\&$ Data-Intensive Science
                      and Engineering (POF4-511)},
      pid          = {G:(DE-HGF)POF4-511},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34047611},
      UT           = {WOS:000652838800002},
      doi          = {10.1103/PhysRevLett.126.192001},
      url          = {https://juser.fz-juelich.de/record/892608},
}