Strong and radiative decays of the D s0 * (2317) and Ds1(2460)

2014/05/09 by Martin Cleven, Harald W. Grießhammer, Feng-Kun Guo +3 · 74 citations
Physics and Astronomy · #Hadron #High-Energy Particle Collisions Research #Nuclear physics #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Radiative transfer #hep-ex #hep-ph

paper · pdf · doi:10.1140/epja/i2014-14149-y

published in The European Physical Journal A 50(9) (Springer Science+Business Media)

arxiv created 2014/05/09 · openalex publication_date 2014/09/01 · arxiv updated 2014/09/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Since their discovery in 2003, the open charm states D_s0^*(2317) and D_s1(2460) provide a challenge to the conventional quark model. In recent years, theoretical evidence has been accumulated for both states in favor of a predominantly DK and D^*K molecular nature, respectively. However, a direct experimental proof of this hypothesis still needs to be found. Since radiative decays are generally believed to be sensitive to the inner structure of the decaying particles, we study in this work the radiative and strong decays of both the D_s0^*(2317) and D_s1(2460), as well as of their counterparts in the bottom sector. While the strong decays are indeed strongly enhanced for molecular states, the radiative decays are of similar order of magnitude in different pictures. Thus, the experimental observable that allows one to conclusively quantify the molecular components of the D_s0^*(2317) and D_s1(2460) is the hadronic width, and not the radiative one, in contradistinction to common belief. We also find that radiative decays of the sibling states in the bottom sector are significantly more frequent than the hadronic ones. Based on this, we identify their most promising discovery channels.

Citations

• Review of Particle Physics
• Structure of the(0+,1+)mesonsBs0andBs1, and the strong coupling constantgBs0BKandgBs1B*K
• Radiative decays of theDs0(2317),Ds1(2460)and the related strong coupling constants
• Dynamically generated 1+ heavy mesons
• Chiral perturbation theory to one loop
• Dynamically generated 0+ heavy mesons in a heavy chiral unitary approach
• Light meson mass dependence of the positive-parity heavy-strange mesons
• Chiral perturbation theory: Expansions in the mass of the strange quark
• Observation of a Narrow Meson State Decaying toDs+π0at a Mass of2.32 GeV/c2
• Radiative and isospin-violating decays of -mesons in the hadrogenesis conjecture

Cited by

• A review of the open charm and open bottom systems
• On chiral excitations with exotic quantum numbers
• Continuum limit of the D meson, Ds meson, and charmonium spectrum from Nf=2+1+1 twisted mass lattice QCD
• Strong decays of \boldsymbolP-wave mixing heavy-light \bf1⁺ states