Reaction. pi. /sup -/p. --> pi. /sup 0/n at momenta from 15 to 40 GeV/c

Journal Article · Wed Aug 01 04:00:00 EDT 1979 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5480916

Apel, W D; Augenstein, K H; Bertolucci, E; Vincelli, M L; Donskov, S V; Johnson, R; Inyakin, A V; Kachanov, V A; Quaglia, M; Krasnokutskii, R N; Krueger, M; Leder, G; Lednev, A A; Mannelli, I; Mikhailov, Y V; Mueller, H; Prokoshkin, Y D; Pierazzini, G M; Sergiampietri, F; Sigurdsson, G ; Scribano, A; Toropin, A N; Schinzel, D; Schneider, H; Steuer, M; Shuvalov, R S

The cross sections of the reaction ..pi../sup -/p..--> pi../sup 0/n were measured with high statistical accuracy at momenta 15, 20, 25, 30, and 40 GeV/c. The experiments were performed with the 70-GeV IHEP accelerator using the NICE 648-channel hodoscopic spectrometer. About 3 million ..pi../sup 0/ mesons were registered. A pulse-height analysis of the reaction at small t has shown that the amplitudes of scattering with and without spin flip are parametrized by exponentials whose arguments are equal within several per cent. The t-dependence of the differential cross section at medium and large t agrees with the model of the geometrical s-channel approximation. The imaginary part Imb/sub 0/(s) of the universal pole is determined. A logarithmic growth of Imb/sub 0/(s) with increasing energy is observed.

• Research Organization: Joint Experiment of Institute of High Energy Physics (Serpukhov, USSR) and CERN (Geneva, Switzerland)
• OSTI ID: 5480916
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 30:2; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BOSONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NEUTRONS
NUCLEONS
PARTICLE INTERACTIONS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
SPIN FLIP