期刊
PHYSICS LETTERS B
卷 656, 期 1-3, 页码 74-78出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2007.09.008
关键词
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We examine the transverse momentum Q(perpendicular to) dependence of the helicity structure functions for massive vector bosons of mass Q in hadron reactions. We demonstrate that large logarithmic terms of the form ln(Q/Q(perpendicular to)) in the helicity structure functions have the same origin as the logarithmic terms in the angular-integrated cross section. and that they can be resummed to all orders in the strong coupling alpha(s), in the same way as the angular-integrated cross section. As a consequence of current conservation, the resummed part of the helicity structure functions preserves the Lam-Tung relation as a function of Q(perpendicular to) to all orders in alpha(s). (c) 2007 Elsevier B.V. All rights reserved.
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