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(p)over-bar-p annihilation cross section at very low energy

CORRADINI, Maurizio;DONZELLA, Antonietta;LODI RIZZINI, Evandro;VENTURELLI, Luca;ZENONI, Aldo;
1996-01-01
1996
Enti pubb. di ricerca ital.
PE2_2 Particle physics
PE2_3 Nuclear physics
PHYSICS LETTERS. SECTION B
sì
2-s2.0-0002571340
WOS:A1996TW67100010
Inglese
369
77
85
8
The <(p)over bar p> total annihilation cross section has been measured, with the Obelix apparatus at LEAR, at ten values of the antiproton incident momentum between 43 and 175 MeV/c. The values of the cross section show that the well known 1/p behaviour of the annihilation cross section is drastically modified at very low momenta, which demonstrates the important role of the Coulomb force in low energy <(p)over bar p> interaction. Moreover, they do not present any explicit resonant behaviour. Finally, when compared to potential model calculations, the data suggest that the percentage of P-wave in <(p)over bar p> interaction around 50 MeV/c antiproton incident momentum is less than 5%.
Ateneo di appartenenza
86
info:eu-repo/semantics/article
262
A., Bertin; M., Bruschi; M., Capponi; B., Cereda; S., Decastro; A., Ferretti; D., Galli; B., Giacobbe; U., Marconi; M., Piccinini; N. S., Cesari; R., ...espandi
1 Contributo su Rivista::1.1 Articolo in rivista
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1.1 Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11379/33426
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