Status of chiral doublers of heavy-light hadrons in light of recent BaBar Cleo, Belle and Selex D_s states

Abstract

We explain the main idea of the chiral doublers scenario, originating from simultaneous constraints of chiral symmetry and of heavy quark spin symmetry on effective theories of heavy-light hadrons. In particular we discuss chiral doublers for mesons, chiral doublers for excited mesons, chiral doublers for baryons and chiral doublers for excited baryons. We point out the arguments why new states D_s(2317) and D_s(2457) might be viewed as chiral doublers of D_s and D_s^*. Then we comment on non-strange mesons D_0(2308) and D_1'(2427) observed by Belle and Focus, and on Theta_c(3099) signal observed by H1. Finally, we point out that very recent discovery by SELEX of D_s(2632), if confirmed by other experiments and if spin-parity of this state is 1^-, may be interpreted as a signal for chiral doubler of D_{s1}(2536). Such an identification implies another narrow, spin-parity 2^- D_s state ca 37 MeV above the new 1^-, corresponding to chiral partner of D_{s2}.

Based on 2004 talks at Meson04, Rencontre de Moriond, Panda Workshop and Hanyang Univ. Workshop. A comment on recent D_s(2632) by Selex is added

References in corpus (6)

• 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
• Chiral Multiplets of Heavy-Light Mesons
• Observation of the DsJ(2317) and DsJ(2457) in B decays
• Understanding $D_{sJ}(2317)$
• Observation of a Narrow Meson Decaying to Ds pi0 gamma at a Mass of 2.458 GeV/c^2

Cited by in corpus (7)

• Statistical hadronization of heavy quarks in ultra-relativistic nucleus-nucleus collisions
• Chiral loop corrections to strong decays of positive and negative parity charmed mesons
• Regge Trajectories Analysis to DsJ(2317), DsJ(2460) and DsJ(2632) Mesons
• Possible Interpretations of $D_{sJ}^{+}(2632)$ If It Really Exists
• The Possible $J^{PC}{I}^G=2^{++}{2}^{+}$ State X(1600)
• Role of Resonances in Heavy Meson Processes within Standard Model and Beyond
• Recent issues in hadron spectroscopy