STUDY OF PI-N-]ETA-PI-N AND PI-N-]ETA'PI-N REACTIONS AT 37 GEV C/

Citation
Gm. Beladidze et al., STUDY OF PI-N-]ETA-PI-N AND PI-N-]ETA'PI-N REACTIONS AT 37 GEV C/, Physics letters. Section B, 313(1-2), 1993, pp. 276-282
Citations number
15
Categorie Soggetti
Physics
Journal title
ISSN journal
03702693
Volume
313
Issue
1-2
Year of publication
1993
Pages
276 - 282
Database
ISI
SICI code
0370-2693(1993)313:1-2<276:SOPAPR>2.0.ZU;2-Y
Abstract
A partial-wave analysis of the etapi- and eta'pi- systems produced in the reactions pi-N-->eta(eta')pi-N on a beryllium target at a beam mom entum of p(pi-) = 37 GeV/c is performed. It is shown that (1) all the waves with negative exchange naturality are negligibly small for both systems; (2) the matrix element squared of the P+ wave with J(PC) = 1- + for the eta'pi- system significantly exceeds that for the etapi- sys tem, which could testify to the dominance of systems with a valence gl uon (qqgBAR) in the J(PC)= l-+ wave formation; (3) the ratio R = Br(a2 - --> eta'pi-)/BR (a2- --> etapi-) = (4.7 +/- 1.0(stat.) +/- 0.4 (syst .)) x 10(-2) has been obtained.