Upper limit on the Ks ---> 3 pi0 decay

Achasov, M. N.; Aulchenko, V. M.; Berdyugin, A. V.; Bozhenok, A. V.; Bukin, A. D.; Bukin, D. A.; Burdin, S. V.; Dimova, T. V.; Druzhinin, V. P.; Dubrovin, M. S.; Gaponenko, I. A.; Golubev, V. B.; Ivanchenko, V. N.; Koop, I. A.; Korol, A. A.; Koshuba, S. V.; Nesterenko, I. N.; Pakhtusova, E. V.; Salnikov, A. A.; Serednyakov, S. I.; Shary, V. V.; Shatunov, Yu. M.; Sidorov, V. A.; Silagadze, Z. K.; Usov, Yu. V.

Upper limit on the Ks ---> 3 pi0 decay

Authors

Description

The search for CP-violating K_S\to3π^0 decay was performed with SND detector at VEPP-2M e^+e^- collider. The total amount of data corresponding to 7 million produced K_S mesons was analyzed. No candidate events were found, giving an upper limit of the decay branching ratio: Br(K_S\to3π^0) < 1.4\cdot10^{-5} at 90% confidence level.
6 pages, 4 figures, to be published in Physics Letters B