The differential cross sections for antiproton elastic scattering on He-4 at 192.8 MeV/c are measured. The annihilation cross section sigma(a) = (377.6+/-8.0) mb, the elastic cross section sigma(el) = (206.3+/-6.6) mb and the total pBARHe-4 interaction cross section sigma(tot) = (583.9+/-10.4) mb are determined. The ratio of the real to imaginary part of the forward pBARHe-4 amplitude is found: rho = -0.17(-0.33)+0.24. Partial wave analysis reveals that the S, P and D waves are essential in this energy region.

Antiproton - He-4 Interactions At 200 Mev/c

BALESTRA, Ferruccio;BUSSA, Maria Pia;BUSSO, Luigi;FERRERO, Livio;PANZIERI, Daniele;PIRAGINO, Guido;
1993-01-01

Abstract

The differential cross sections for antiproton elastic scattering on He-4 at 192.8 MeV/c are measured. The annihilation cross section sigma(a) = (377.6+/-8.0) mb, the elastic cross section sigma(el) = (206.3+/-6.6) mb and the total pBARHe-4 interaction cross section sigma(tot) = (583.9+/-10.4) mb are determined. The ratio of the real to imaginary part of the forward pBARHe-4 amplitude is found: rho = -0.17(-0.33)+0.24. Partial wave analysis reveals that the S, P and D waves are essential in this energy region.
1993
305
18
22
antiproton-He-4 annihilation
F. BALESTRA;Y. A. BATUSOV;G. BENDISCIOLI;S. BOSSOLASCO;M. P. BUSSA;L. BUSSO;S. A. BUNYATOV;K. M. DANIELSEN;I. V. FALOMKIN;L. FAVA;L. FERRER...espandi
File in questo prodotto:
File Dimensione Formato  
1993_PL_B305_18-22.pdf

Accesso riservato

Tipo di file: POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione 326.47 kB
Formato Adobe PDF
326.47 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/108568
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 7
social impact