Search for the decay in the momentum region

Authors :: Artamonov, A.V.
Bassalleck, B.
Bhuyan, B.
Blackmore, E.W.
Bryman, D.A.
Chen, S.
Chiang, I.-H.
Christidi, I.-A.
Cooper, P.S.
Diwan, M.V.
Frank, J.S.
Fujiwara, T.
Hu, J.
Jaffe, D.E.
Kabe, S.
Kettell, S.H.
Khabibullin, M.M.
Khotjantsev, A.N.
Kitching, P.
Kobayashi, M.
Source :: Physics Letters B. Sep2005, Vol. 623 Issue 3/4, p192-199. 8p.
Publication Year :: 2005
Abstract: Abstract: We have searched for the decay in the kinematic region with momentum close to the end point. No events were observed, and the 90% confidence-level upper limit on the partial branching ratio was obtained, under the assumption of chiral perturbation theory including next-to-leading order “unitarity” corrections. The same data were used to determine an upper limit on the branching ratio of at the 90% confidence level. [Copyright &y& Elsevier]