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New Insight into Antiproton Production and Reabsorption Using Proton-Nucleus Collisions at the AGS

S. Mioduszewski
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Abstract

Antiproton ($\bar{p}$) yields are presented for proton-nucleus collisions, with targets Be, Cu, and Au, at beam momenta of 12.3 and 17.5 GeV/c. In addition to target size and beam momentum, the number of projectile collisions $ν$, as derived from the number of ``grey'' tracks (slow protons and deuterons), is used to disentangle the $\bar{p}$ reabsorption from the production. By quantifying the amount of reabsorption of the $\bar{p}$ within the nucleus as a function of $ν$, the annihilation within the nucleus is estimated and compared to the free annihilation cross section. Preliminary results on antilambda ($\barΛ$) production as a function of $ν$ are also presented for comparison.

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S. Mioduszewski. 2001-05-14. New Insight into Antiproton Production and Reabsorption Using Proton-Nucleus Collisions at the AGS. https://doi.org/10.1016/s0375-9474(01)01436-1

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