Study of the Radivative Pion Decay

Details Study of the Radivative Pion Decay Study of the Radivative Pion Decay

2010-06-15

arxiv.org/abs/1006.2939v2

Phys.Rev.D83:074001,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 figures, 4 tables, Version accepted by PRD

Scientific paper

10.1103/PhysRevD.83.074001

We study the radiative pion decay of $\pi ^{+} \to e^{+}\nu_{e}\gamma$ in the chiral perturbation theory (ChPT) and light front quark model (LFQM). The vector and axial-vector hadronic form factors ($F_{V,A}$) for the $\pi\to\gamma$ transition are evaluated in the whole allowed momentum transfer. In terms of these momentum dependent form factors, we calculate the decay branching ratio and compare our results with the experimental data and other theoretical predictions in the literature. We also constrain the possible size of the tensor interaction in the LFQM.

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