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Heavy-quark symmetry and the electromagnetic decays of excited charmed strange mesons

Publication ,  Journal Article
Mehen, T; Springer, RP
Published in: Physical Review D - Particles, Fields, Gravitation and Cosmology
2004

Heavy-hadron chiral perturbation theory (HHχPT) is applied to the decays of the even-parity charmed strange mesons, Ds0(2317) and Ds1(2460). Heavy-quark spin-symmetry predicts the branching fractions for the three electromagnetic decays of these states to the ground states Ds and Ds* in terms of a single parameter. The resulting predictions for two of the branching fractions are significantly higher than current upper limits from the CLEO experiment. Leading corrections to the branching ratios from chiral loop diagrams and spin-symmetry violating operators in the HHχPT Lagrangian can naturally account for this discrepancy. Finally the proposal that the Ds0(2317) (D s1(2460)) is a hadronic bound state of a D(D*) meson and a kaon is considered. Leading order predictions for electromagnetic branching ratios in this molecular scenario are in very poor agreement with existing data.

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Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

Publication Date

2004

Volume

70

Issue

7

Start / End Page

074014-1-074014-12

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

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Mehen, T., & Springer, R. P. (2004). Heavy-quark symmetry and the electromagnetic decays of excited charmed strange mesons. Physical Review D - Particles, Fields, Gravitation and Cosmology, 70(7), 074014-1-074014–12. https://doi.org/10.1103/PhysRevD.70.074014
Mehen, T., and R. P. Springer. “Heavy-quark symmetry and the electromagnetic decays of excited charmed strange mesons.” Physical Review D - Particles, Fields, Gravitation and Cosmology 70, no. 7 (2004): 074014-1-074014–12. https://doi.org/10.1103/PhysRevD.70.074014.
Mehen T, Springer RP. Heavy-quark symmetry and the electromagnetic decays of excited charmed strange mesons. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2004;70(7):074014-1-074014–12.
Mehen, T., and R. P. Springer. “Heavy-quark symmetry and the electromagnetic decays of excited charmed strange mesons.” Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 70, no. 7, 2004, pp. 074014-1-074014–12. Scival, doi:10.1103/PhysRevD.70.074014.
Mehen T, Springer RP. Heavy-quark symmetry and the electromagnetic decays of excited charmed strange mesons. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2004;70(7):074014-1-074014–12.

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

Publication Date

2004

Volume

70

Issue

7

Start / End Page

074014-1-074014-12

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences