Journalartikel

Jahr der Veröffentlichung: 1991

Seiten: 331-336

Zeitschrift: Physics Letters B

Bandnummer: 256

Heftnummer: 3-4

ISSN: 0370-2693

DOI Link: https://doi.org/10.1016/0370-2693(91)91771-M

Verlag: Elsevier

Abstract: 
The production of antiprotons in proton-nucleus and nucleus-nucleus reactions is analyzed with respect to baryon-baryon production processes. The dynamical evolution of the phase-space distributions is treated on the basis of the Vlasov-Uehling-Uhlenbeck transport theory including explicitly pion, DELTA-(1232) and N*(1440) degrees of freedom and considering free on-shell production processes. At very low subthreshold energies it is found that nucleon resonances account for the major part of the antiproton yield. Also, higher chance nucleon-nucleon collisions play a significant role, especially in the nucleus-nucleus case. Quantitatively reliable predictions of the antiproton yield are hampered by uncertainties in the elementary NN --> pBARp + NN cross section close to threshold.

Harvard-Zitierstil: Batko, G., Cassing, W., Mosel, U., Niita, K. and Wolf, G. (1991) Antiproton production in p-nucleus and nucleus-nucleus collisions, Physics Letters B, 256(3-4), pp. 331-336. https://doi.org/10.1016/0370-2693(91)91771-M

APA-Zitierstil: Batko, G., Cassing, W., Mosel, U., Niita, K., & Wolf, G. (1991). Antiproton production in p-nucleus and nucleus-nucleus collisions. Physics Letters B. 256(3-4), 331-336. https://doi.org/10.1016/0370-2693(91)91771-M