Advertisement

A role of the axial-vector mesons on the photon production in heavy-ion collisions and their relevant decays

  • Y.C. Shin
  • M.K. Cheoun
  • K.S. Kim
  • T.K. Choi

Abstract:

A role of the axial-vector mesons, such as K1 and a1, on the emitted-photon spectrum in hot hadronic matter is studied through the channels πρ→a1→πγ and Kρ→K1Kγ. Both channels could be dominant over the region lower than Eγ∼ 0.5 GeV, while the role of the K1 meson is diminished in the higher Eγ region. This study is carried out with an SUL(3) ⊗SUR(3) effective chiral Lagrangian which includes vector and axial-vector mesons systematically and explains well their hadronic and radiative decays simultaneously.

PACS. 13.25.Jx Decays of other mesons – 13.30.Eg Hadronic decays – 25.75.Dw Particle and resonance production – 25.70.-z Low and intermediate energy heavy-ion reactions 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2002

Authors and Affiliations

  • Y.C. Shin
    • 1
  • M.K. Cheoun
    • 2
  • K.S. Kim
    • 3
  • T.K. Choi
    • 4
  1. 1.Cyclotron Application Laboratory, Korea Cancer Center Hospital, Seoul, 139-706, KoreaKR
  2. 2.IUCNSF, Building 139-1, Seoul National University, Seoul, 151-742, KoreaKR
  3. 3.BK21 Physics Research Division and Institute of Basic Science, Sung Kyun Kwan University, Suwon, 440-746, KoreaKR
  4. 4.Department of Physics, Yonsei University, Wonju, 220-710, KoreaKR

Personalised recommendations