Analysis of K+→e+νeγ in light-front quark model and chiral perturbation theory of order p6

Chuan Hung Chen, Chao Qiang Geng, Chong Chung Lih

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15 Citations (Scopus)

Abstract

Within the frameworks of the light-front quark model (LFQM) and chiral perturbation theory (ChPT) of O(p6), we reevaluate the form factors of the K+→γ transition. We use these form factors to study the decay of K+→e+νeγ, which is dominated by the structure-dependent contribution. We show the differential decay branching ratio as a function of x=2Eγ/mK, where Eγ(mK) is the photon energy (kaon mass). Explicitly, we find that, in the standard model with the cut of x=0.01 (0.1), the decay branching ratio of K+→e+νeγ is 1.54(1.44)×10-5 and 1.57(1.47)×10-5 in the LFQM and ChPT, respectively.

Original languageEnglish
Article number014004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume77
Issue number1
DOIs
Publication statusPublished - 2008 Jan 7

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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