Anti-proton production in p nucleus and nucleus-nucleus collisions

Batko, G.; Cassing, W.; Mosel, U.; Niita, K.; Wolf, G.

doi:10.1016/0370-2693(91)91771-M

Anti-proton production in p nucleus and nucleus-nucleus collisions

1991

6 pages

Published in:

Phys.Lett.B 256 (1991) 331-336

Published: 1991

DOI:

10.1016/0370-2693(91)91771-M

View in:

reference search51 citations

Citations per year

Abstract: (Elsevier)

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, Δ(1232) and N ∗ (1400) 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 → p p + NN cross section close to threshold.

p nucleus: nuclear reaction
nucleus nucleus: nuclear reaction
anti-p: hadroproduction
hadroproduction: anti-p
nucleon nucleon: interaction
interaction: nucleon nucleon
pi
Delta(1232)
N(1440)
transport theory

References(20)

Figures(0)

[1]

A Guide to microscopic models for intermediate-energy heavy ion collisions

G.F. Bertsch
(
- Michigan State U.
)
,
S. Das Gupta
(
- McGill U.
)

- Phys.Rept. 160 (1988) 189-233
•
DOI:
- 10.1016/0370-1573(88)90170-6

[2]

Production of energetic particles in heavy ion collisions

- Phys.Rept. 188 (1990) 363-449
•
DOI:
- 10.1016/0370-1573(90)90164-W

[3]

O. Chamberlain

- Nuovo Cim. 3 (1956) 447

[4]

Antiproton-Nucleon Cross Sections from 0.5 to 1.0 BeV

et al.

- Phys.Rev. 128 (1962) 869-884
•
DOI:
- 10.1103/PhysRev.128.869

[5]

Production of Antiprotons via Nuclear Motion

et al.

- Phys.Rev.Lett. 14 (1965) 995-999
•
DOI:
- 10.1103/PhysRevLett.14.995

[6]

A.A. Baldin

- JETP Lett. 47 (1988) 137

[7]

Subthreshold Anti-proton Production in $^{28}$ Si + $^{28}$ Si Collisions at 2.1-{GeV}/nucleon

et al.

- Phys.Rev.Lett. 62 (1989) 1829-1932,
- LAWRENCE BERKELEY LAB. - LBL-25849 (88,REC.MAR.89) 11p,
- PHYS. REV. LETT. 62 (1989) 1829-1932 AND LAWRENCE BERKELEY LAB. - LBL-25849 (88,REC.MAR.89) 11p
•
DOI:
- 10.1103/PhysRevLett.62.1829

[8]

Subthreshold Anti-proton, $K^-$ , $K^+$ , and Energetic Pion Production in Relativistic Nucleus Nucleus Collisions

et al.

- Phys.Rev.Lett. 63 (1989) 2192-2195,
- LAWRENCE BERKELEY LAB. - LBL-27477 (89,REC.OCT.) 15p,
- Phys. Rev. Lett. 63 (1989) 2192-2195 and Lawrence Berkeley Lab. - LBL-27477 (89,rec.Oct.) 15 p
•
DOI:
- 10.1103/PhysRevLett.63.2192

[9]

$K^\pm$ , $\bar{p}$ and $\Omega^-$ Production in Relativistic Heavy Ion Collisions

P. Koch
(
- SUNY, Stony Brook
)
,
C.B. Dover
(
- Brookhaven
)

- Phys.Rev.C 40 (1989) 145-155,
- PHYS. REV. C40 (1989) 145-155 AND BROOKHAVEN NAT. LAB. UPTON - BNL-42428 (REC.MAY 89) 27p
•
DOI:
- 10.1103/PhysRevC.40.145