k⊥ factorization vs. renormalization group: a small-x consistency argument
نویسندگان
چکیده
منابع مشابه
K-factorization and Small-x Anomalous Dimensions
We investigate the consistency requirements of the next-to leading BFKL equation with the renormalization group, with particular emphasis on running coupling effects and NL anomalous dimensions. We show that, despite some model dependence of the bare hard Pomeron, such consistency holds at leading twist level, provided the effective variable α s (t) log(1/x) is not too large. We give a unified ...
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We propose and analyze an improved small-x equation which incorporates exact leading and next-to-leading BFKL kernels on one hand and renormalization group constraints in the relevant collinear limits on the other. We work out in detail the recently proposed ω-expansion of the solution, derive the Green’s function factorization properties and discuss both the gluon anomalous dimension and the h...
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I review the basic idea of k⊥-factorization and its relation to collinear factorization. Theoretical results in resummed perturbation theory are summarized and the example of the heavy-flavour structure functions is explicitly considered. Using these results one can investigate the small-x behaviour of quantities that are independent of the non-perturbative parton densities. In particular, one ...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1995
ISSN: 0370-2693
DOI: 10.1016/0370-2693(95)00801-q