We describe some results obtained by the OBELIX experiment at LEAR by exploiting the whole spectrometer, including the electromagnetic calorimeter, to study the antiproton-proton annihilation at rest in an NTP hydrogen target. In particular, we give some information on the calibration of the calorimeter, as obtained from the analysis of two-prong events, and we describe the status of the analysis of the first sample of «all neutrals» events collected in gaseous hydrogen. A preliminary result on the branching ratio of the annihilation reaction pˉp→π0π0 is reported.
First results from OBELIX on reactions with detected neutral poins in the final state / V. G., Ableev; A., Adamo; A., Andrighetto; M., Angello; F., Balestra; G., Belli; G., Bendiscioli; A., Bertin; P., Boccaccio; G., Bonazzola; E., Botta; T., Bressani; M., Bruschi; M. P., Bussa; L., Busso; D., Calvo; M., Capponi; B., Cereda; P., Cerello; C., Cicalò; M., Corradini; S., Costa; I., D’Antone; S., Castro; C., Leo; Denisov, D. Y. u.; F., D’Isep; A., Donzella; L., Fava; A., Feliciello; L., Ferrero; A., Filippi; V., Filippini; A., Fontana; D., Galli; R., Garfagnini; U., Gastaldi; B., Giacobbe; P., Gianotti; A., Grasso; C., Guaraldo; F., Iazzi; A., Lai; A., Lanaro; E., Lodi Rizzini; M., Lombardi; V., Lucherini; A., Maggiora; S., Marcello; U., Marconi; Margagliotti, Giacomo; G., Maron; A., Masoni; I., Massa; B., Minetti; P., Montagna; M., Morando; L., Musa; F., Nichitiu; D., Panzieri; G., Pauli; M., Piccinini; G., Piragino; M., Poli; S. N., Prakhov; G., Puddu; R. A., Ricci; E., Rossetto; A., Rotondi; A. M., Rozhdestvensky; A., Saino; P., Salvini; L., Santi; M. G., Sapozhnikov; N., Semprini Cesari; S., Serci; R., Spighi; P., Temnikov; Tessaro, Susanna; F., Tosello; V. I., Tretyak; G., Usai; L., Vannucci; S., Vecchi; G., Vedovato; L., Venturelli; M., Villa; A., Vitale; A., Zenoni; A., Zoccoli; G., Zosi. - In: NUOVO CIMENTO. A. - ISSN 0369-3546. - STAMPA. - 107:(1994), pp. 2287-2303. [10.1007/BF02733995]
First results from OBELIX on reactions with detected neutral poins in the final state
MARGAGLIOTTI, GIACOMO;TESSARO, SUSANNA;
1994-01-01
Abstract
We describe some results obtained by the OBELIX experiment at LEAR by exploiting the whole spectrometer, including the electromagnetic calorimeter, to study the antiproton-proton annihilation at rest in an NTP hydrogen target. In particular, we give some information on the calibration of the calorimeter, as obtained from the analysis of two-prong events, and we describe the status of the analysis of the first sample of «all neutrals» events collected in gaseous hydrogen. A preliminary result on the branching ratio of the annihilation reaction pˉp→π0π0 is reported.Pubblicazioni consigliate
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