Measurement of the nuclear enhancement in high-Etand jet event production
- 1 May 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 35 (9) , 2736-2746
- https://doi.org/10.1103/physrevd.35.2736
Abstract
Properties of events produced with high values of transverse energy () in 800-GeV/c proton-nucleus collisions are presented. Both full-azimuth and limited-aperture high- triggers were used to select events from six targets (H, Be, C, Al, Cu, and Pb). The events were collected using the large-acceptance Fermilab multiparticle spectrometer that recorded almost 95% of the incoming beam energy. The A dependence of the cross sections at a given was parametrized as . The value of α increases from 0.7 at low to a plateau at high of approximately 1.6. The high- value of α is slightly smaller for the limited-aperture triggers. A strong dependence of α on the event structure is observed; ‘‘jetlike’’ events exhibit an A dependence consistent with α≊1.0, while for more isotropic events α is much larger. This observation is consistent with the expected behavior for jet production in pA collisions.
Keywords
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