Electronic Resource
Springer
The European physical journal
7 (2000), S. 293-298
ISSN:
1434-601X
Keywords:
PACS: 25.75.-q Relativistic heavy-ion collisions – 25.75.Dw Particle and resonance production
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: Antiproton (¯p) and antilambda (¯Λ) production has been measured for minimum bias in p+A collisions and central A1+ A2 collisions at the CERN-SPS by the collaborations NA35/49 and NA44. The measurements are extrapolated from rapidity distributions to absolute minimum bias cross sections. It is shown that the ¯p cross sections divided by A1· A2 follow an exponential trend as a function of a characteristic length obtained from a Glauber type absorption model, while the ¯Λ cross sections divided by A1· A2 are constant. The exponential trend also holds for ¯p production at the lower energies of the Brookhaven AGS. A discussion of the physics interpretation of the established trends in terms of an effective absorption cross section is presented.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100500050394
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