Study of multiple pion production reactions at the VEPP-2M storage ring using a cryogenic magnetic detector

Journal Article · Sun Jan 31 23:00:00 EST 1988 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6920511

Barkov, L M; Vasserman, I B; Vorob'ev, P V; Ivanov, P M; Kezerashvili, G Y; Koop, I A; Lysenko, A P; Mikailichenko, A A; Okhapkin, V S; Perevedentsev, E A; others, and

The cross sections for the processes e/sup +/e/sup -/..--> pi../sup +/..pi../sup -/..pi../sup +/..pi../sup -/ and e/sup +/e/sup -/..--> pi../sup +/..pi../sup -/..pi../sup +/..pi../sup -/..pi../sup 0/ have been measured in the energy range 2E = 1019--1403 MeV with the cryogenic magnetic detector (CMD) at the VEPP-2M electron-positron storage ring. The limit B(phi..--> pi../sup +/..pi../sup -/..pi../sup +/..pi../sup -/..pi../sup 0/)<1.5 x 10/sup -4/ has been obtained at the 95% confidence level. At the energy 2E = 1403 MeV, the cross section sigma = 0.26 +- 0.12 nb for the reaction e/sup +/e/sup -/..--> pi../sup +/..pi../sup -/..pi../sup +/..pi../sup -/..pi../sup 0/..pi../sup 0/ has been measured, and a limit sigma<45 pb on the cross section for e/sup +/e/sup -/..--> pi../sup +/..pi../sup -/..pi../sup +/..pi../sup -/..pi../sup +/..pi../sup -/ has been obtained at the 95% confidence level.

• Research Organization: Institute of Nuclear Physics, Siberian Division, USSR Academy of Sciences
• OSTI ID: 6920511
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 47:2; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Weak Interactions &amp; Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CROSS SECTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 01-10
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MESONS
MULTIPLE PRODUCTION
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS
PSEUDOSCALAR MESONS