Journal
PHYSICAL REVIEW LETTERS
Volume 111, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.222001
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Funding
- Austrian Science Fund FWF project [I1313-N27]
- Slovenian Research Agency ARRS project [N1-0020]
- Natural Sciences and Engineering Research Council of Canada
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The scalar meson D-s0*(2317) is found 37(17) MeV below the DK threshold in a lattice simulation of the J(P)= 0(+) channel using, for the first time, both DK as well as (s) over bar c interpolating fields. The simulation is done on N-f = 2 + 1 gauge configurations with m(pi) similar or equal to 156 MeV, and the resulting M-Ds0* - 1/4(MDs + 3M(Ds)*) = 266(16) MeV is close to the experimental value 241: 5(0.8) MeV. The energy level related to the scalar meson is accompanied by additional discrete levels due toDK scattering states. The levels near threshold lead to the negativeDK scattering length a(0) = 1. 33(20) fm that indicates the presence of a state belowthreshold.
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