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., A., A., A., A., A., M., A., F., B., G., B., G., B., A., B., P., B., G., B., E., B., T., B., M., B., M. P., B., L., B., D., C., M., C., B., C., P., C., C., C., et al.. - 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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2719393
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