Chiral expansion of the $π^0\rightarrowγγ$ decay width

Details Chiral expansion of the $π^0\rightarrowγγ$ decay width Chiral expansion of the $π^0\rightarrowγγ$ decay width

2011-09-07

arxiv.org/abs/1109.1467v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages

Scientific paper

A chiral field theory of mesons has been applied to study the contribution of
the current quark masses to the $\pi^0\rightarrow\gamma\gamma$ decay width at
the next leading order. $2\%$ enhancement has been predicted and there is no
new parameter.

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