A.N. Prokhorov

Measurements of K−p → K̄0n charge-exchange cross-sections at 25 and 35 GeV/c☆

Abstract Results are presented on the reaction K − p → K o n for momenta above 20 GeV/ c . Events were identified by precise measurement of the opening angle in the decay K o → π + π − without using a magnetic field. The cross-section is described by a power energy dependence.

Study of the reaction K−p → K0n at momenta of 25 and 40 GeV/c

Abstract Measurements were made of the differential cross sections for the charge exchange of K − mesons on protons at momenta of 25 and 40 GeV/ c using a high-precision spectrometer with no magnetic field. In the range 5–40 GeV/ c the reaction cross section follows a power-law dependence p K − −1.52 . In the snall momentum transfer region (− t ⪅ m π 2 ) a minimum is observed, similar to that discovered at lower energies. The differential cross sections t = 0 are considerably less than those predicted by the Regge-pole model. The parameters of the effective trajectory are determined.

Study of the Reaction K- p --> anti-K0 n at Momenta of 25-GeV/c and 40-GeV/c

ALPHA EFFECTIVE FOUND TO BE (0.39 +- 0.02) + (0.84 +- 0.07)*T. THIS PAPER IS THE SAME AS W. D. APEL ET AL., NP B129, 275 (1977).