Hard exclusive meson production and nonforward parton distributions
نویسندگان
چکیده
منابع مشابه
Hard Exclusive Meson Production and Nonforward Parton Distributions ∗
We present an analysis of twist-2, leading order QCD amplitudes for hard exclusive leptoproduction of mesons in terms of double/nonforward parton distribution functions. After reviewing some general features of nonforward nucleon matrix elements of twist-2 QCD string operators, we propose a phenomenological model for quark and gluon nonforward distribution functions. The corresponding QCD evolu...
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4 We calculate the exclusive process γ * L (Q 2 1)γ * L (Q 2 2) → ρ 0 L ρ 0 L , at high energy. The Born order estimate and the leading (LLA) and next to leading order (NLLA) BFKL resum-mation effects show the feasibility of experimental detection in a quite large range of Q 2 values at future high energy e + e − linear colliders. 3 present address 4 Unité mixte 8627 du CNRS.
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 1998
ISSN: 1434-6044,1434-6052
DOI: 10.1007/s100529800829