The value of the proton form factor in the time-like region has been determined at Q2=12.4(GeV/c)2. We have selected events pp¯→e+e- from the data collected in an experiment performed at the Antiproton Accumulator Ring at Fermilab and, assuming the validity of the ‖GE‖≊0 hypotesis, we have found ‖GM‖=.034±.017 and σTOT(pp¯→e+e-)=10±5pb.
Experimental determination of the proton electromagnetic form factor at Q2 = 12.4 (GeV/c)2
D. BETTONI;R. CALABRESE;P. DALPIAZ;P. FERRETTI DALPIAZ;E. LUPPI;M. MARTINI;PETRUCCI, Ferruccio Carlo;M. SAVRIE\';
1991
Abstract
The value of the proton form factor in the time-like region has been determined at Q2=12.4(GeV/c)2. We have selected events pp¯→e+e- from the data collected in an experiment performed at the Antiproton Accumulator Ring at Fermilab and, assuming the validity of the ‖GE‖≊0 hypotesis, we have found ‖GM‖=.034±.017 and σTOT(pp¯→e+e-)=10±5pb.File in questo prodotto:
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