SPIN-MOMENTUM CORRELATION (HANDEDNESS) IN THE PROCESS OF 4 PION-PRODUCTION IN THE ELECTRON-POSITRON COLLISIONS

Authors
BRATKOVSKAYA EL KURAEV EA SILAGADZE ZK TERYAEV OV
Citation
El. Bratkovskaya et al., SPIN-MOMENTUM CORRELATION (HANDEDNESS) IN THE PROCESS OF 4 PION-PRODUCTION IN THE ELECTRON-POSITRON COLLISIONS, Physics letters. Section B, 338(4), 1994, pp. 471-477
Citations number
15
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
338
Issue
4
Year of publication
1994
Pages
471 - 477
Database
ISI
SICI code
0370-2693(1994)338:4<471:SC(ITP>2.0.ZU;2-O
Abstract
We discuss a special type of polarization asymmetry (''handedness'') i n the process e+e- --> 4pi, when one of the initial particles is longi tudinally polarized. The asymmetry is proportional to the degree of po larization and to the width to mass ratio of the rho-meson. It can rea ch 4-5% in some kinematical region. Both the channels 2pi+2pi- and 2pi 0pi+pi- are considered in the framework of the effective chiral lagran gian with vector mesons, in the energy range approximately 1 GeV. The corresponding total cross sections are also calculated.