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

Authors

BELADIDZE GM BERDNIKOV EB BITYUKOV SI BORISOV GV DZHELYADIN RI EKIMOV AV GOUZ YP IVANYUSHENKOV YM KACHAEV IA KARYUKHIN AN KHOKHLOV YA KLYUCHNIKOV GA KONSTANTINOV VF KOSTRIKOV ME KOSTYUKHIN VV KRIUSHIN AA LOMTADZE TA MATVEYEV VD OSTANKOV AP RYABCHIKOV DI SEKHNIAIDZE GG STARCHENKO EA TSKHADAZE EG VISHNEVSKY NK VLASOV EV ZAITSEV AM

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

Categorie Soggetti

Physics

Journal title

Physics letters. Section B → ACNP

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.