he 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-statistics data sets collected in hydrogen targets at three different densities. The different mixtures of partial waves corresponding to our samples allow a reliable determination of each contribution. This technique is crucial in the identification of the exotic candidate f(2)(1565) 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.

Spin-Parity Analysis of the Final State pi+ pi- pi0 frompbar p Annihilation at Rest in Hydrogen Targets at Three Densities

BALESTRA, Ferruccio;BOTTA, Elena;BRESSANI, Tullio;BUSSA, Maria Pia;BUSSO, Luigi;COSTA, Sergio;FERRERO, Livio;GARFAGNINI, Raffaello;GRASSO, Antonino;MARCELLO, Simonetta;PANZIERI, Daniele;
1997-01-01

Abstract

he 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-statistics data sets collected in hydrogen targets at three different densities. The different mixtures of partial waves corresponding to our samples allow a reliable determination of each contribution. This technique is crucial in the identification of the exotic candidate f(2)(1565) 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.
1997
B408
476
486
ANTIPROTON-PROTON ANNIHILATION; HIGH-STATISTICS; VECTOR-MESON; H-2 GAS; F(0)(1500); PHYSICS; OBELIX
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
File in questo prodotto:
File Dimensione Formato  
1997_PL_B408_476-486.pdf

Accesso riservato

Tipo di file: POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione 1.01 MB
Formato Adobe PDF
1.01 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/2826
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact