Production rates for $\pi^+ K^−, \pi^− K^+$ and $\pi^+ \pi^−$ atoms in p-Ni interactions at proton momentum 24 and 450 GeV/c

The results of performed analysis show that the yield of π + K − , K + π − and π + π − atoms in the p-nuclear interactions increases significantl y at change of proton momentum P p from 24 up to 450 GeV/c. The yield of these dimesoatoms at P p =450 GeV/c and θ lab = 4 ◦ is on the order more than the one at DIRAC experimentconditions: P p =24 GeV/c and θ lab = 5 . 7 ◦ . The large yield of dimesoatoms allows significant improvement of their lifetime measurement.