SPIN-PARITY ANALYSIS OF THE FINAL-STATE PI(-)PI(0) FROM (P)OVER-BARP ANNIHILATION AT REST IN HYDROGEN TARGETS AT 3 DENSITIES()PI()

Authors
BERTIN A BRUSCHI M CAPPONI M COLLAMATI A DAMIANI C DECASTRO S DONA R FERRETTI A FILIPPI L GALLI D GIACOBBE B MARCONI U MASSA I PICCININI M POLI M SEMPRINICESARI N SPIGHI R VAGNONI V VECCHI S VEZZANI A VIGOTTI F VILLA M VITALE A ZOCCOLI A CORRADINI M DONZELLA A RIZZINI EL VENTURELLI L ZENONI A CICALO C MASONI A PUDDU G SERCI S TEMNIKOV PP USAI G GORCHAKOV OE PRAKHOV SN ROZHDESTVENSKY AM SAPOZHNIKOV MG TRETYAK VI GIANOTTI P GUARALDO C LANARO A LUCHERINI V NICHITIU F PETRASCU C ROSCA A ABLEEV VG CAVION C GASTALDI U MARON G RICCI RA VANNUCCI L VEDOVATO G BENDISCIOLI G FILIPPINI V FONTANA A MONTAGNA P ROTONDI A SAINO A SALVINI P SCOGLIO C BALESTRA F BOTTA E BRESSANI T BUSSA MP BUSSO L CALVO D CERELLO P COSTA S DENISOV O FAVA L FELICIELLO A FERRERO L FILIPPI A GARFAGNINI R GRASSO A MAGGIORA A MARCELLO S PANZIERI D PARENA D ROSSETTO E TOSELLO F VALACCA L AGNELLO M IAZZI F MINETTI B PAULI G TESSARO S SANTI L
Citation
A. Bertin et al., SPIN-PARITY ANALYSIS OF THE FINAL-STATE PI(-)PI(0) FROM (P)OVER-BARP ANNIHILATION AT REST IN HYDROGEN TARGETS AT 3 DENSITIES()PI(), Physics letters. Section B, 408(1-4), 1997, pp. 476-486
Citations number
31
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
408
Issue
1-4
Year of publication
1997
Pages
476 - 486
Database
ISI
SICI code
0370-2693(1997)408:1-4<476:SAOTFP>2.0.ZU;2-P
Abstract
The partial wave analysis of the reaction (p) over bar p --> pi(+)pi(- )pi(0) at rest has been performed for the first time by using high-sta tistics data sets collected in hydrogen targets at three different den sities. The different mixtures of partial waves corresponding to our s amples allow a reliable determination of each contribution. This techn ique is crucial in the identification of the exotic candidate f(2)(156 5) which can be produced by S-1(0), P-3(1) and P-3(2) initial states. The amplitude analysis was performed in the frame of the K-Matrix and P-Vector approach. It requires the presence of the exotic candidates f (0)(1500) and f(2)(1565) with the following masses and total widths: ( 1449 +/- 20)MeV, (114 +/- 30)MeV and (1507 +/- 15)MeV, (130 +/- 20)MeV respectively. In addition to f(0)(980), f(0)(1300) f(2)(1270) and rho (770), a clear evidence of I = 1, J(p) = 1(-) signal,which we identify with rho(1450), is obtained. (C) 1997 Published by Elsevier Science B .V.