Puzzles of excited charm meson masses

Abstract

We attempt a comprehensive analysis of the low lying charm meson states which present several puzzles, including the poor determination of masses of several non-strange excited mesons. We use the well-determined masses of the ground states and the strange first excited states to `predict' the mass of the non-strange first excited state in the framework of heavy hadron chiral perturbation theory, an approach that is complementary to the well-known analysis of Mehen and Springer. This approach points to values for the masses of these states that are smaller than the experimental determinations. We provide a critical assessment of these mass measurements and point out the need for new experimental information.

arXiv comment9 pages, 1 figure, accepted for publication in Physics Letters B

References in corpus (19)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Observation of a Narrow Meson Decaying to Ds+pi0 at a Mass of 2.32 GeV/c^2
• Observation of a Narrow Resonance of Mass 2.46 GeV/c^2 Decaying to D_s^*+ pi^0 and Confirmation of the D_sJ^* (2317) State
• Branching Fraction and Photon Energy Spectrum b -> s gamma
• Constituent quark model study of the meson spectra
• Study of B- => D**0 pi-(D**0 => D(*)+ pi-) decays
• Global analysis of inclusive B decays
• First Measurement of Gamma(D*+) and Precision Measurement of m_D*+ - m_D0
• Measurement of Masses and Widths of Excited Charm Mesons $D_2^{\ast }$ and Evidence for Broad States
• An Upper Bound on the Decay tau -> mu gamma from Belle
• Excited Charmed Mesons: Observations, Analyses and Puzzles
• Even- and Odd-Parity Charmed Meson Masses in Heavy Hadron Chiral Perturbation Theory
• On the mass differences between the scalar and pseudoscalar heavy-light mesons
• Chiral loop corrections to strong decays of positive and negative parity charmed mesons
• Understanding masses of $c\bar{s}$ states in Regge phenomenology
• Observation of a Broad L=1 $c\bar{q}$ State in $B^{-}\to D^{\ast +}{\pi }^{-}{\pi }^{-}$ at CLEO
• Strong and Electromagnetic Mass Splittings in Heavy Mesons
• Heavy quark expansion parameters from lattice NRQCD

Cited by in corpus (8)

• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Strong decays of heavy-light mesons in a chiral quark model
• Masses of Scalar and Axial-Vector B Mesons Revisited
• Implications of chiral symmetry on $S$-wave pionic resonances and the scalar charmed mesons
• Mass Spectra of Heavy-Light Mesons in Heavy Hadron Chiral Perturbation Theory
• Low-energy constants of heavy meson effective theory in lattice QCD
• Quark mass dependence of the low-lying charmed mesons at one loop in HH$\chi$PT
• Heavy-light charm mesons spectroscopy and decay widths