STUDY OF THE ETA-PI- SYSTEM IN THE PI-P REACTION AT 6.3 GEV C/

Authors
AOYAGI H FUKUI S HASEGAWA T HAYASHI N HORIKAWA N IIZUKA J INABA S ISHIMOTO S ISHIZAKI Y IWATA T KANATANI E KAWAI H KINASHI T KISHI A KOBAYASHI K KOBAYASHI Y MATSUDA K MATSUDA T MORI K NAKAGAWA T NAKAMURA S NAKAMURA T NAKANISHI T NARITA A OHMI K OHMORI C SAMOTO T SHIMIZU H TAJIMA Y TAKAMATSU K TAKASAKI M TSUBAKI T TSUCHIYA K TSURU T YAMAUCHI I YASU Y YOSHIDA HY WAKAI A
Citation
H. Aoyagi et al., STUDY OF THE ETA-PI- SYSTEM IN THE PI-P REACTION AT 6.3 GEV C/, Physics letters. Section B, 314(2), 1993, pp. 246-254
Citations number
27
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
314
Issue
2
Year of publication
1993
Pages
246 - 254
Database
ISI
SICI code
0370-2693(1993)314:2<246:SOTESI>2.0.ZU;2-B
Abstract
Data of the etapi- system were obtained in the reaction pi-p-->etapi-p at 6.3 GeV/c beam momentum. About 17 k events of etapi- were collecte d in the mass range 0.8 less-than-or-equal-to M(etapi-) less-than-or-e qual-to 1.8 GeV/c2 and in the range of the momentum transfer squared 0 .075 less-than-or-equal-to \t'\ less-than-or-equal-to 0.60 (GeV/c)2. A large forward-backward asymmetry was observed around 1.3 GeV/C2 in th e Gottfried-Jackson frame of the etapi- system. A partial wave analysi s of the data was performed. A peak of the D+ wave attributed to a2 (1 320) is clearly seen. An enhancement is observed around 1.3 GeV/C2 in the P+ wave.