Decays of ![\pi ^\pm](/img/latex/7d/7d16e171ff73ce3f9369bcc38df7d216-v2.png) mesons involving axions and massless axions: π→ l+νl+a(a')
Ansel'm A. A. , Lobashev V. M. , Ural'tsev N. G.
Decays of the type π ~-> /" -fv, + a are analyzed. The probability for the electron version of the decay is ÷(ÔÇ~-+Å~ +ve + α)~1(Γ9, which is comparable to the width of the primary background decay, 7ç"-> e~ +ve + γ. Events which do not correspond to a two-particle kinematics can be identified, in the absence of an accompanying γ ray, as decays of the type
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