Light meson mass dependence of the positive-parity heavy-strange mesons

. We calculate the masses of the resonances and as well as their bottom partners as bound states of a kaon and a - and -meson, respectively, in unitarized chiral perturbation theory at next-to-leading order. After fixing the parameters in the channel, the calculated mass for the is found in excellen...

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Bibliographic Details
Published inThe European physical journal. A, Hadrons and nuclei Vol. 47; no. 2
Main Authors Cleven, M., Guo, F. -K., Hanhart, C., Meißner, U. -G.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.02.2011
Subjects
Hadrons
Heavy Ions
Nuclear Fusion
Nuclear Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Regular Article - Theoretical Physics
Heavy Quark
Quark State
Spin Symmetry
Mass Dependence
Heavy Meson
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Summary:. We calculate the masses of the resonances and as well as their bottom partners as bound states of a kaon and a - and -meson, respectively, in unitarized chiral perturbation theory at next-to-leading order. After fixing the parameters in the channel, the calculated mass for the is found in excellent agreement with experiment. The masses for the analogous states with a bottom quark are predicted to be MeV and MeV in reasonable agreement with previous analyses. In particular, we predict MeV. 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.
ISSN:1434-6001
1434-601X
DOI:10.1140/epja/i2011-11019-2