TY  - JOUR
AU  - Cleven, M.
AU  - Guo, F.-K.
AU  - Hanhart, C.
AU  - Meißner, U.-G.
TI  - Light meson mass dependence of the  positive parity heavy-strange mesons
JO  - The European physical journal / A
VL  - 47
SN  - 1434-6001
CY  - Berlin
PB  - Springer
M1  - PreJuSER-18600
SP  - 19
PY  - 2011
N1  - This work is partially supported by the Helmholtz Association through funds provided to the Virtual Institute "Spin and strong QCD" (VH-VI-231) and by the DFG (TR 16, "Subnuclear Structure of Matter"), the European Community-Research Infrastructure Integrating Activity "Study of Strongly Interacting Matter" (acronym Hadron-Physics2, Grant Agreement No. 227431) under the FP7 of the EU, and the BMBF (Grant No. 06BN9006).
AB  - We calculate the masses of the resonances D*(s0)(2317) and D-s1(2460) as well as their bottom partners as bound states of a kaon and a D-(*())-and B-(*())-meson, respectively, in unitarized chiral perturbation theory at next-to-leading order. After fixing the parameters in the D*(s0)(2317) channel, the calculated mass for the D-s1(2460) is found in excellent agreement with experiment. The masses for the analogous states with a bottom quark are predicted to be MB*(s0) - (5696 +/- 40) MeV and M-Bs1 - (5742 +/- 40) MeV in reasonable agreement with previous analyses. In particular, we predict M-Bs1-MB*(s0) - 46 +/- 1MeV. We also explore the dependence of the states on the pion and kaon masses. We argue that the kaon mass dependence of a kaonic bound state should be almost linear with slope about unity. Such a dependence is specific to the assumed molecular nature of the states. We suggest to extract the kaon mass dependence of these states from lattice QCD calculations.
KW  - K: mass (INSPIRE)
KW  - perturbation theory: chiral (INSPIRE)
KW  - higher-order: 1 (INSPIRE)
KW  - D/s0*(2317): mass: calculated (INSPIRE)
KW  - D/s1(2460): mass: calculated (INSPIRE)
KW  - bottom meson: mass: calculated (INSPIRE)
KW  - meson meson: bound state (INSPIRE)
KW  - pi: mass (INSPIRE)
KW  - Goldstone particle: scattering amplitude (INSPIRE)
KW  - coupled channel (INSPIRE)
KW  - binding energy (INSPIRE)
KW  - numerical calculations (INSPIRE)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000288551700006
DO  - DOI:10.1140/epja/i2011-11019-2
UR  - https://juser.fz-juelich.de/record/18600
ER  -