FIRST RESULTS FROM OBELIX ON REACTIONS WITH DETECTED NEUTRAL PIONS INTHE FINAL-STATE

Authors
ABLEEV VG ADAMO A ANDRIGHETTO A AGNELLO M BALESTRA F BELLI G BENDISCIOLI G BERTIN A BOCCACCIO P BONAZZOLA G BOTTA E BRESSANI T BRUSCHI M BUSSA MP BUSSO L CALVO D CAPPONI M CEREDA B CERELLO P CICALO C CORRADINI M COSTA S DANTONE I DECASTRO S DELEO C DENISOV DY DISEP F DONZELLA A FAVA L FELICIELLO A FERRERO L FILIPPI A FILIPPINI V FONTANA A GALLI D GARFAGNINI R GASTALDI U GIACOBBE B GIANOTTI P GRASSO A GUARALDO C IAZZI F LAI A LANARO A RIZZINI EL LOMBARDI M LUCHERINI V MAGGIORA A MARCELLO S MARCONI U MARGAGLIOTTI GV MARON G MASONI A MASSA I MINETTI B MONTAGNA P MORANDO M MUSA L NICHITIU F PANZIERI D PAULI G PICCININI M PIRAGINO G POLI M PRAKHOV SN PUDDU G RICCI RA ROSSETTO E ROTONDI A ROZHDESTVENSKY AM SAINO A SALVINI P SANTI L SAPOZHNIKOV MG CESARI NS SERCI S SPIGHI R TEMNIKOV P TESSARO S TOSELLO F TRETYAK VI USAI G VANNUCCI L VECCHI S VEDOVATO G VENTURELLI L VILLA M VITALE A ZENONI A ZOCCOLI A ZOSI G
Citation
Vg. Ableev et al., FIRST RESULTS FROM OBELIX ON REACTIONS WITH DETECTED NEUTRAL PIONS INTHE FINAL-STATE, Nuovo cimento della Società Italiana di Fisica. A. Nuclei, particles and fields, 107(11), 1994, pp. 2287-2303
Citations number
26
Categorie Soggetti
Physics, Particles & Fields
Journal title
Nuovo cimento della Società Italiana di Fisica. A. Nuclei, particles and fields → ACNP
ISSN journal
11241861
Volume
107
Issue
11
Year of publication
1994
Pages
2287 - 2303
Database
ISI
SICI code
1124-1861(1994)107:11<2287:FRFOOR>2.0.ZU;2-K
Abstract
We describe some results obtained by the OBELIX experiment at LEAR by exploiting the whole spectrometer, including the electromagnetic calor imeter, to study the antiproton-proton annihilation at rest in an NTP hydrogen target. In particular, we give some information on the calibr ation of the calorimeter, as obtained from the analysis of two-prong e vents, and we describe the status of the analysis of the first sample of ''all neutrals'' events collected in gaseous hydrogen. A preliminar y result on the branching ratio of the annihilation reaction ($) over bar pp-->pi(0) pi(0) is reported.