Multiplicity and transverse energy flux in 16O+Pb at 200 GeV per nucleon

doi:10.1016/0370-2693(87)90581-8

Physics Letters B

Volume 184, Issues 2–3, 29 January 1987, Pages 271-276

https://doi.org/10.1016/0370-2693(87)90581-8 Get rights and content

Abstract

First results from ultrarelativistic ¹⁶O+Pb collisions at 200 GeV/nucleon are presented. The transverse energy E_T in average central collisions is ≈ 75 GeV for the interval 2.2⩽y⩽3.8. A 16-fold convolution of the inelastic p+Au transverse energy spectrum, also measured at 200 GeV, reproduces the mean E_T of ¹⁶O+Pb. The amount of nuclear stopping power appears to be high.

References (10)

A. Sandoval
J.B. Kogut
Nucl. Phys. A
(1984)
H. Satz
Nucl. Phys. A
(1984)
D. Barton
Phys. Rev. D
(1983)
R. Bailey
Z. Phys. C
(1985)
D. Lissauer
W. Busza et al.
Phys. Lett. B
(1984)
S. Date et al.
Phys. Rev. D
(1985)
M. Jezabek et al.
Phys. Lett. B
(1986)
W.C. Middlekoop, CERN preprint...

There are more references available in the full text version of this article.

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²: On leave of absence from Central Research Institute for Physics, H-1525 Budapest, Hungary.

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Multiplicity and transverse energy flux in 16O+Pb at 200 GeV per nucleon

Abstract

Nucl. Phys. A

Nucl. Phys. A

Phys. Rev. D

Z. Phys. C

Phys. Lett. B

Phys. Rev. D

Phys. Lett. B

Multiplicity and transverse energy flux in ¹⁶O+Pb at 200 GeV per nucleon