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
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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.