Chinese Journal of Physics[V35-No.6]

VOLUME 35, NUMBER 6, PART II

DECEMBER 1997

Heavy Quarkonium Production and Propagation in Nuclei
Cheuk-Yin Wong Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A. (Received October 24, 1997)
We describe a precursor in heavy quarkonium production in terms of a coherent admixture of states of different color, spin, and angular momentum quantum numbers, and obtain the production amplitudes for different quarkonium bound states by projecting out this precursor state onto these bound states. The precursor is absorbed in its passage through a nucleus in a pA reaction, and the total cross section between this precursor with a nucleon can be calculated with the two-gluon model of Pomeron. Such a description of coherent precursors and their subsequent interactions with nucleons can explain many salient features of and production in pA collisions.

Heavy Quarkonium Production and Propagation in Nuclei

Cheuk-Yin Wong

Physics Division, Oak Ridge National Laboratory,
Oak Ridge, TN 37831, U.S.A.

(Received October 24, 1997)

We describe a precursor in heavy quarkonium production in terms of a coherent admixture of states of different color, spin, and angular momentum quantum numbers, and obtain the production amplitudes for different quarkonium bound states by projecting out this precursor state onto these bound states. The precursor is absorbed in its passage through a nucleus in a pA reaction, and the total cross section between this precursor with a nucleon can be calculated with the two-gluon model of Pomeron. Such a description of coherent precursors and their subsequent interactions with nucleons can explain many salient features of

and

production in pA collisions.

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