期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
卷 19, 期 1, 页码 149-158出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217751X04017458
关键词
photons; soft gluons; resummation; next-to-next-to-leading order
Previous work on soft-gluon resummation for direct photon production is extended to include additional subleading logarithmic terms through O(alphaalpha(S)(3)) and some representative comparisons are made to experimental results from the E-706 and UA-6 Collaborations. The additional terms are small in magnitude, indicating good convergence properties to the level of accuracy calculated. The scale dependence remains much smaller than that of the next-to-leading-order calculation.
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