Regge-like spectra of excited singly heavy mesons
Institute of Theoretical Physics, College of Physics and Electronic Engineering, Northwest Normal University, 730070, Lanzhou, China
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Accepted: 16 December 2018
Published online: 27 March 2019
In this work, we study the Regge-like spectra of excited singly heavy mesons by proposing a general Regge-like mass relation, in which the slope ratio between the radial and angular-momentum Regge trajectories is /2 and the hadron mass undergoes a shift including the heavy quark mass and an extra binding energy between heavy quark and strange anti-quark. The relation is successfully tested against the observed spin-averaged data of the singly heavy mesons in their radially and angularly excited states. Some new predictions are made for more excited heavy-light mesons and the discussion is given associated with the QCD string (flux tube) picture.
© Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019