Antiproton production in 28Si-Nucleus interactions

J. Barrette; R. Bellwied; P. Braun-Munzinger; W. E. Cleland; T. Cormier; G. David; J. Dee; O. Dietzsch; E. Duek; M. Fatyga; D. Fox; S. V. Greene; J. R. Hall; T. K. Hemmick; N. Herrmann; R. W. Hogue; B. Hong; K. Jayananda; D. Kraus; B. Shiva Kumar; R. Lacasse; D. Lissauer; W. J. Llope; T. Ludlam; R. Majka; D. Makowiecki; S. K. Mark; S. McCorkle; J. T. Mitchell; M. Muthuswamy; E. O'Brien; V. Polychronakos; C. Pruneau; F. S. Rotondo; J. Sandweiss; N. C. da Silva; J. Simon-Gillo; J. Slaughter; U. Sonnadara; J. Stachel; H. Takai; E. M. Takagui; T. G. Throwe; L. Waters; C. Winter; K. Wolf; D. Wolfe; C. L. Woody; N. Xu; Y. Zhang; Z. Zhang; C. Zou

doi:10.1016/0375-9474(92)90625-T

Antiproton production in ²⁸Si-Nucleus interactions

J. Barrette, R. Bellwied, P. Braun-Munzinger, W. E. Cleland, T. Cormier, G. David, J. Dee, O. Dietzsch, E. Duek, M. Fatyga, D. Fox, S. V. Greene, J. R. Hall, T. K. Hemmick, N. Herrmann, R. W. Hogue, B. Hong, K. Jayananda, D. Kraus, B. Shiva KumarR. Lacasse, D. Lissauer, W. J. Llope, T. Ludlam, R. Majka, D. Makowiecki, S. K. Mark, S. McCorkle, J. T. Mitchell, M. Muthuswamy, E. O'Brien, V. Polychronakos, C. Pruneau, F. S. Rotondo, J. Sandweiss, N. C. da Silva, J. Simon-Gillo, J. Slaughter, U. Sonnadara, J. Stachel, H. Takai, E. M. Takagui, T. G. Throwe, L. Waters, C. Winter, K. Wolf, D. Wolfe, C. L. Woody, N. Xu, Y. Zhang, Z. Zhang, C. Zou

Department of Physics

Research output: Contribution to journal › Article

Abstract

We have used the E814 apparatus to make a systematic study of antiproton production in collisions of ²⁸Si ions at 14.6 GeV/c per nucleon with targets of Pb, Cu, and Al. We have measured the antiproton yield per interaction as a function of transverse energy and have found the yield to increase by a factor of ≈ 2 in going from the least to the most central collisions on the Pb target. A simple first-collision picture of antiproton production predicts the yield to increase by a factor of ≈ 11. We suggest that the discrepancy may result from the annihilation of antiprotons within the nuclear medium.

Original language	English
Pages (from-to)	599-602
Number of pages	4
Journal	Nuclear Physics, Section A
Volume	544
Issue number	1-2
DOIs	https://doi.org/10.1016/0375-9474(92)90625-T
Publication status	Published - 1992 Jul 20

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Barrette, J., Bellwied, R., Braun-Munzinger, P., Cleland, W. E., Cormier, T., David, G., Dee, J., Dietzsch, O., Duek, E., Fatyga, M., Fox, D., Greene, S. V., Hall, J. R., Hemmick, T. K., Herrmann, N., Hogue, R. W., Hong, B., Jayananda, K., Kraus, D., ... Zou, C. (1992). Antiproton production in ²⁸Si-Nucleus interactions. Nuclear Physics, Section A, 544(1-2), 599-602. https://doi.org/10.1016/0375-9474(92)90625-T

Antiproton production in ²⁸Si-Nucleus interactions. / Barrette, J.; Bellwied, R.; Braun-Munzinger, P.; Cleland, W. E.; Cormier, T.; David, G.; Dee, J.; Dietzsch, O.; Duek, E.; Fatyga, M.; Fox, D.; Greene, S. V.; Hall, J. R.; Hemmick, T. K.; Herrmann, N.; Hogue, R. W.; Hong, B.; Jayananda, K.; Kraus, D.; Shiva Kumar, B.; Lacasse, R.; Lissauer, D.; Llope, W. J.; Ludlam, T.; Majka, R.; Makowiecki, D.; Mark, S. K.; McCorkle, S.; Mitchell, J. T.; Muthuswamy, M.; O'Brien, E.; Polychronakos, V.; Pruneau, C.; Rotondo, F. S.; Sandweiss, J.; da Silva, N. C.; Simon-Gillo, J.; Slaughter, J.; Sonnadara, U.; Stachel, J.; Takai, H.; Takagui, E. M.; Throwe, T. G.; Waters, L.; Winter, C.; Wolf, K.; Wolfe, D.; Woody, C. L.; Xu, N.; Zhang, Y.; Zhang, Z.; Zou, C.

In: Nuclear Physics, Section A, Vol. 544, No. 1-2, 20.07.1992, p. 599-602.

Research output: Contribution to journal › Article

Barrette, J, Bellwied, R, Braun-Munzinger, P, Cleland, WE, Cormier, T, David, G, Dee, J, Dietzsch, O, Duek, E, Fatyga, M, Fox, D, Greene, SV, Hall, JR, Hemmick, TK, Herrmann, N, Hogue, RW, Hong, B, Jayananda, K, Kraus, D, Shiva Kumar, B, Lacasse, R, Lissauer, D, Llope, WJ, Ludlam, T, Majka, R, Makowiecki, D, Mark, SK, McCorkle, S, Mitchell, JT, Muthuswamy, M, O'Brien, E, Polychronakos, V, Pruneau, C, Rotondo, FS, Sandweiss, J, da Silva, NC, Simon-Gillo, J, Slaughter, J, Sonnadara, U, Stachel, J, Takai, H, Takagui, EM, Throwe, TG, Waters, L, Winter, C, Wolf, K, Wolfe, D, Woody, CL, Xu, N, Zhang, Y, Zhang, Z & Zou, C 1992, 'Antiproton production in ²⁸Si-Nucleus interactions', Nuclear Physics, Section A, vol. 544, no. 1-2, pp. 599-602. https://doi.org/10.1016/0375-9474(92)90625-T

Barrette, J. ; Bellwied, R. ; Braun-Munzinger, P. ; Cleland, W. E. ; Cormier, T. ; David, G. ; Dee, J. ; Dietzsch, O. ; Duek, E. ; Fatyga, M. ; Fox, D. ; Greene, S. V. ; Hall, J. R. ; Hemmick, T. K. ; Herrmann, N. ; Hogue, R. W. ; Hong, B. ; Jayananda, K. ; Kraus, D. ; Shiva Kumar, B. ; Lacasse, R. ; Lissauer, D. ; Llope, W. J. ; Ludlam, T. ; Majka, R. ; Makowiecki, D. ; Mark, S. K. ; McCorkle, S. ; Mitchell, J. T. ; Muthuswamy, M. ; O'Brien, E. ; Polychronakos, V. ; Pruneau, C. ; Rotondo, F. S. ; Sandweiss, J. ; da Silva, N. C. ; Simon-Gillo, J. ; Slaughter, J. ; Sonnadara, U. ; Stachel, J. ; Takai, H. ; Takagui, E. M. ; Throwe, T. G. ; Waters, L. ; Winter, C. ; Wolf, K. ; Wolfe, D. ; Woody, C. L. ; Xu, N. ; Zhang, Y. ; Zhang, Z. ; Zou, C. / Antiproton production in ²⁸Si-Nucleus interactions. In: Nuclear Physics, Section A. 1992 ; Vol. 544, No. 1-2. pp. 599-602.

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title = "Antiproton production in 28Si-Nucleus interactions",

abstract = "We have used the E814 apparatus to make a systematic study of antiproton production in collisions of 28Si ions at 14.6 GeV/c per nucleon with targets of Pb, Cu, and Al. We have measured the antiproton yield per interaction as a function of transverse energy and have found the yield to increase by a factor of ≈ 2 in going from the least to the most central collisions on the Pb target. A simple first-collision picture of antiproton production predicts the yield to increase by a factor of ≈ 11. We suggest that the discrepancy may result from the annihilation of antiprotons within the nuclear medium.",

author = "J. Barrette and R. Bellwied and P. Braun-Munzinger and Cleland, {W. E.} and T. Cormier and G. David and J. Dee and O. Dietzsch and E. Duek and M. Fatyga and D. Fox and Greene, {S. V.} and Hall, {J. R.} and Hemmick, {T. K.} and N. Herrmann and Hogue, {R. W.} and B. Hong and K. Jayananda and D. Kraus and {Shiva Kumar}, B. and R. Lacasse and D. Lissauer and Llope, {W. J.} and T. Ludlam and R. Majka and D. Makowiecki and Mark, {S. K.} and S. McCorkle and Mitchell, {J. T.} and M. Muthuswamy and E. O'Brien and V. Polychronakos and C. Pruneau and Rotondo, {F. S.} and J. Sandweiss and {da Silva}, {N. C.} and J. Simon-Gillo and J. Slaughter and U. Sonnadara and J. Stachel and H. Takai and Takagui, {E. M.} and Throwe, {T. G.} and L. Waters and C. Winter and K. Wolf and D. Wolfe and Woody, {C. L.} and N. Xu and Y. Zhang and Z. Zhang and C. Zou",

year = "1992",

month = jul,

day = "20",

doi = "10.1016/0375-9474(92)90625-T",

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T1 - Antiproton production in 28Si-Nucleus interactions

AU - Barrette, J.

AU - Bellwied, R.

AU - Braun-Munzinger, P.

AU - Cleland, W. E.

AU - Cormier, T.

AU - David, G.

AU - Dee, J.

AU - Dietzsch, O.

AU - Duek, E.

AU - Fatyga, M.

AU - Fox, D.

AU - Greene, S. V.

AU - Hall, J. R.

AU - Hemmick, T. K.

AU - Herrmann, N.

AU - Hogue, R. W.

AU - Hong, B.

AU - Jayananda, K.

AU - Kraus, D.

AU - Shiva Kumar, B.

AU - Lacasse, R.

AU - Lissauer, D.

AU - Llope, W. J.

AU - Ludlam, T.

AU - Majka, R.

AU - Makowiecki, D.

AU - Mark, S. K.

AU - McCorkle, S.

AU - Mitchell, J. T.

AU - Muthuswamy, M.

AU - O'Brien, E.

AU - Polychronakos, V.

AU - Pruneau, C.

AU - Rotondo, F. S.

AU - Sandweiss, J.

AU - da Silva, N. C.

AU - Simon-Gillo, J.

AU - Slaughter, J.

AU - Sonnadara, U.

AU - Stachel, J.

AU - Takai, H.

AU - Takagui, E. M.

AU - Throwe, T. G.

AU - Waters, L.

AU - Winter, C.

AU - Wolf, K.

AU - Wolfe, D.

AU - Woody, C. L.

AU - Xu, N.

AU - Zhang, Y.

AU - Zhang, Z.

AU - Zou, C.

PY - 1992/7/20

Y1 - 1992/7/20

N2 - We have used the E814 apparatus to make a systematic study of antiproton production in collisions of 28Si ions at 14.6 GeV/c per nucleon with targets of Pb, Cu, and Al. We have measured the antiproton yield per interaction as a function of transverse energy and have found the yield to increase by a factor of ≈ 2 in going from the least to the most central collisions on the Pb target. A simple first-collision picture of antiproton production predicts the yield to increase by a factor of ≈ 11. We suggest that the discrepancy may result from the annihilation of antiprotons within the nuclear medium.

AB - We have used the E814 apparatus to make a systematic study of antiproton production in collisions of 28Si ions at 14.6 GeV/c per nucleon with targets of Pb, Cu, and Al. We have measured the antiproton yield per interaction as a function of transverse energy and have found the yield to increase by a factor of ≈ 2 in going from the least to the most central collisions on the Pb target. A simple first-collision picture of antiproton production predicts the yield to increase by a factor of ≈ 11. We suggest that the discrepancy may result from the annihilation of antiprotons within the nuclear medium.

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