CINECA IRIS Institutional Research Information System

First results on meson spectroscopy using antineutrons as projectiles are reported. Three-body (pi+ pi+ pi-) and five-body (pi+ pi+ pi+ pi- pi-) final states following the annihilation of 100 to 290 MeV/c antineutrons on hydrogen were analyzed. The (pi+ pi-) invariant mass spectrum in the three-body reaction is accounted for by the rho-0 and f2(1270) resonances, together with an enhancement around 1540 MeV, in the region of the AX(1565) and the f2(1515) resonances, whereas the best fit for the (pi+ pi+ pi- pi-) invariant mass in five-body events shows the already reported structure zeta(1480) and suggests the presence of a second structure around 1650 MeV.

Meson Spectroscopy With Antineutrons

BALESTRA, Ferruccio;BONAZZOLA, Giancarlo;BRESSANI, Tullio;BUSSA, Maria Pia;BUSSO, Luigi;COSTA, Sergio;FERRERO, Livio;GARFAGNINI, Raffaello;GRASSO, Antonino;MARCELLO, Simonetta;PANZIERI, Daniele;PIRAGINO, Guido;ZOSI, Gianfranco
1992-01-01

Abstract

First results on meson spectroscopy using antineutrons as projectiles are reported. Three-body (pi+ pi+ pi-) and five-body (pi+ pi+ pi+ pi- pi-) final states following the annihilation of 100 to 290 MeV/c antineutrons on hydrogen were analyzed. The (pi+ pi-) invariant mass spectrum in the three-body reaction is accounted for by the rho-0 and f2(1270) resonances, together with an enhancement around 1540 MeV, in the region of the AX(1565) and the f2(1515) resonances, whereas the best fit for the (pi+ pi+ pi- pi-) invariant mass in five-body events shows the already reported structure zeta(1480) and suggests the presence of a second structure around 1650 MeV.
1992
287
368
374
meson spectroscopy; antineutron proton annhilation
A. ADAMO;M. AGNELLO;F. BALESTRA;G. BELLI;G. BENDISCIOLI;A. BERTIN;P. BOCCACCIO;G. C. BONAZZOLA;T. BRESSANI;M. BRUSCHI;M. P. BUSSA;L. BUSSO;D. CALVO;M. CAPPONI;M. CORRADINI;S. COSTA;S. DECASTRO;F. DISEP;L. FAVA;A. FELICIELLO;L. FERRERO;V. FILIPPINI;D. GALLI;R. GARFAGNINI;U. GASTALDI;P. GIANOTTI;A. GRASSO;C. GUARALDO;F. IAZZI;A. LANARO;E. L. RIZZINI;M. LOMBARDI;V. LUCHERINI;A. MAGGIORA;S. MARCELLO;U. MARCONI;G. V. MARGAGLIOTTI;G. MARON;A. MASONI;I. MASSA;B. MINETTI;M. MORANDO;F. NICHITIU;D. PANZIERI;G. PAULI;M. PICCININI;G. PIRAGINO;M. POLI;G. PUDDU;R. A. RICCI;E. ROSSETTO;A. ROTONDI;A. M. ROZHDESTVENSKY;P. SALVINI;L. SANTI;M. G. SAPOZHNIKOV;N. S. CESARI;S. SERCI;P. TEMNIKOV;S. TESSARO;F. TOSELLO;V. I. TRETYAK;L. VANNUCCI;G. VEDOVATO;L. VENTURELLI;A. VITALE;G. ZAVATTINI;A. ZENONI;A. ZOCCOLI;G. ZOSI
03A-Articolo su Rivista
File in questo prodotto:
File Dimensione Formato  
1992_PL_B287_368-374.pdf

Accesso riservato

Tipo di file: POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione 527.51 kB
Formato Adobe PDF
  Visualizza/Apri   Richiedi una copia
527.51 kB 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/2318/108739
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 46
social impact