Search for long-lived heavy particles in π- U interactions at 55-GeV/c incident momentum
Antipov Yu.M. , Bezzubov V.A. , Budanov N.P., Gorin Yu.P., Denisov S.P. , Klimenko S.V. , Komov I.V., Mikhailov Yu.V., Lebedev A.A., Petrukhin A.I., Polovnikov S.A., Roinishvili V.N., Stoyanova D.A.
The effective mass spectrum of Κττ systems produced in the reaction π ~ Ό -+K τπ± -f ... at 55-GeV/c incident momentum was investigated for the purpose of searching for heavy mesons with a lifetime of 10 ~12 to 10 ~10 sec. Narrow resonances were not observed in the 1.3-2.3-GeV mass region of the Kir systems. Upper limits for the production cross sections of D 0 mesons were estimated.