Hard exclusive and semi-exclusive meson production
نویسندگان
چکیده
منابع مشابه
Hard Exclusive Production of a Vector Meson
The processes of a light neutral vector meson, V = ρ 0 , ω, φ, electroproduction and a heavy quarkonium, V = J/Ψ, Υ, photoproduction are studied in the framework of QCD factorization. We derive a complete set of hard-scattering amplitudes which describe these processes at next-to-leading order (NLO).
متن کاملHard 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...
متن کاملHard Pomeron in exclusive meson production at ILC 1
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.
متن کاملHard exclusive meson production at next - to - leading order
We evaluate perturbative next-to-leading order corrections to the hard exclusive leptoproduction of π + mesons on a transversely polarized proton target. A model dependent study shows that these corrections can be large. We analyze the scale dependence and explore the Brodsky-Lepage-Mackenzie scale setting procedure. Although the predictions for the cross section suffer from theoretical uncerta...
متن کاملExclusive Meson Production at NLO
Generalized parton distributions (GPDs) are a versatile tool to quantify important aspects of hadron structure in QCD. They contain unique information on the spatial distribution of partons [1] and on the orbital angular momentum they carry in the proton [2]. The theoretically cleanest process where GPDs can be studied is deeply virtual Compton scattering (similar to inclusive DIS, which plays ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2000
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(00)00033-6