Search for associative production of D0 mesons with muons in π- Be interactions at 55 GeV/c
Antipov Yu.M., Bezzubov V.A., Dudanov N.P., Gorin Yu.P., Denisenko A.A., Denisov S.P., Ech F.A., Klimenko S.V., Konoplyannikov A.K., Kotov V.I., Lebedev A.A., Lednev A.A., Mikhailov Yu.V., Petrukhin A.I., Polovnikov S.A., Roinishvili V.N., Stoyanov D.A.
The wide-aperture "Sigma" spectrometer was used to search for the reaction π " Be—vBe + μ...,Ό°~>ëÔÔ at Á ÔÇ"-meson momentum 55 GeV/c. The particles were identified with a multichannel counter, which made it possible to separate pions and kaons in the momentum interval 7-21 GeV/c. No narrow resonances were observed in the effective-mass spectrum of the Κ π systems. Upper-bound estimates were obtained for the D -meson production cross sections.