Subthreshold Pion Production: An Intranuclear <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>N</mi><mo>−</mo><mi>N</mi></math></span> Collision Interpretation

Marshall Blann

doi:10.1103/PhysRevLett.54.2215

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Subthreshold Pion Production: An Intranuclear $N - N$ Collision Interpretation

Marshall Blann

Lawrence Livermore National Laboratory, University of California, Livermore, California 94550

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Phys. Rev. Lett. 54, 2215 – Published 20 May, 1985

DOI: https://doi.org/10.1103/PhysRevLett.54.2215

Abstract

$π^{0}$ production cross sections are calculated with use of a Boltzmann master equation which assumes a nucleon-nucleon collision relaxation mechanism for the reaction of 35-MeV/nucleon ${}^{14}N$ with ${}^{27}{Al}$ , ${}^{58}{Ni}$ , and ${}^{184}W$ targets, and for ${}^{12}C$ + ${}^{12}C$ at energies of 60, 74, and 84 MeV/nucleon. Results support a nucleon-nucleon collision mechanism as one possible interpretation of experimental yields.

References (21)

P. Braun-Munzinger et al., Phys. Rev. Lett. 52, 255 (1984)
T. Johansson et al., Phys. Rev. Lett. 48, 732 (1982)
H. Noll et al., Phys. Rev. Lett. 52, 1284 (1984)
C. Gale and S. Das Gupta, Phys. Rev. C 30, 414 (1984)
J. Aichelin and G. Bertsch, Phys. Lett. 138B, 350 (1984)
J. Aichelin, Phys. Rev. Lett. 52, 2340 (1984)
D. Vask, H. Stoecker, B. Mueller, and W. Greiner, Phys. Lett. 93B, 243 (1980)
R. Shyam and J. Knoll, Gesellschaft für Schwerionen-forschung Report No. GSI 83-22, 1983 (unpublished)
H. Heckwolf et al., Z. Phys. A 315, 243 (1984)
J. Stachel et al., in Proceedings of the Institute for Nuclear Studies-RIKEN Symposium on Heavy Ion Physics, Tokyo, Japan, August 1984 (to be published)
G. F. Bertsch, Phys. Rev. C 15, 713 (1977)
M. Blann, Phys. Rev. C 31, 295 (1985)
M. Blann, Phys. Rev. C 31, 1245 (1985)
G. D. Harp, J. M. Miller, and B. J. Berne, Phys. Rev. 165, 1166 (1968)
G. D. Harp and J. M. Miller, Phys. Rev. C 3, 1847 (1971)
M. Blann, A. Mignerey, and W. Scobel, Nukleonika 21, 335 (1976)
M. Blann, Phys. Rev. 23, 205 (1981)
E. Holub et al., Phys. Rev. C 28, 252 (1983)
K. Chen et al., Phys. Rev. 166, 949 (1968)
B. J. Ver West and R. A. Arndt, Phys. Rev. C 25, 1979 (1982)
P. Braun-Munzinger, private communication

[c1] P. Braun-Munzinger et al., Phys. Rev. Lett. 52, 255 (1984)

[c2] T. Johansson et al., Phys. Rev. Lett. 48, 732 (1982)

[c3] H. Noll et al., Phys. Rev. Lett. 52, 1284 (1984)

[c4] C. Gale and S. Das Gupta, Phys. Rev. C 30, 414 (1984)

[c5] J. Aichelin and G. Bertsch, Phys. Lett. 138B, 350 (1984)

[c6] J. Aichelin, Phys. Rev. Lett. 52, 2340 (1984)

[c7] D. Vask, H. Stoecker, B. Mueller, and W. Greiner, Phys. Lett. 93B, 243 (1980)

[c8] R. Shyam and J. Knoll, Gesellschaft für Schwerionen-forschung Report No. GSI 83-22, 1983 (unpublished)

[c9] H. Heckwolf et al., Z. Phys. A 315, 243 (1984)

[c10] J. Stachel et al., in Proceedings of the Institute for Nuclear Studies-RIKEN Symposium on Heavy Ion Physics, Tokyo, Japan, August 1984 (to be published)

[c11] G. F. Bertsch, Phys. Rev. C 15, 713 (1977)

[c12] M. Blann, Phys. Rev. C 31, 295 (1985)

[c13] M. Blann, Phys. Rev. C 31, 1245 (1985)

[c14] G. D. Harp, J. M. Miller, and B. J. Berne, Phys. Rev. 165, 1166 (1968)

[c15] G. D. Harp and J. M. Miller, Phys. Rev. C 3, 1847 (1971)

[c16] M. Blann, A. Mignerey, and W. Scobel, Nukleonika 21, 335 (1976)

[c17] M. Blann, Phys. Rev. 23, 205 (1981)

[c18] E. Holub et al., Phys. Rev. C 28, 252 (1983)

[c19] K. Chen et al., Phys. Rev. 166, 949 (1968)

[c20] B. J. Ver West and R. A. Arndt, Phys. Rev. C 25, 1979 (1982)

[c21] P. Braun-Munzinger, private communication

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Subthreshold Pion Production: An Intranuclear $N - N$ Collision Interpretation

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Subthreshold Pion Production: An Intranuclear N−N Collision Interpretation

Abstract

References (21)

Subthreshold Pion Production: An Intranuclear $N - N$ Collision Interpretation