Parton distribution amplitudes of light vector mesons
نویسندگان
چکیده
منابع مشابه
Higher twist light-cone distribution amplitudes of vector mesons in QCD
Amplitudes of hard (light-cone dominated) exclusive processes in QCD are expressed by the factorization formulae, which separate the short-distance dynamics from the longdistance one[1]. For those processes producing a (light) vector meson V (= ρ, ω,K, φ) in the final state, like exclusive semileptonic or radiative B decays (B → V eν, B → V + γ) and the hard electroproduction of vector mesons (...
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P.A. Boylea, D. Brömmel∗b, M.A. Donnellanb,c, J.M. Flynnb, A. Jüttnerd and C.T. Sachrajdab a School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JH, UK b School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK c Deutsches Elektronen-Synchrotron DESY, 15738 Zeuthen, Germany d Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, 55099 Ma...
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The standard approach to distribution amplitudes, which is due to Brodsky and Lepage , considers the hadron’s parton decomposition in the infinite momentum frame. A conceptually different, but mathematically equivalent formalism is the light-cone quantization . Either way, power suppressed contributions to exclusive processes in QCD, which are commonly referred to as higher twist corrections, a...
متن کاملHigher Twist Distribution Amplitudes of Vector Mesons in QCD: Twist-4 Distributions and Meson Mass Corrections
We present a systematic study of twist-4 light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion. The structure of meson mass corrections is studied in detail. A complete set of distribution amplitudes is constructed, which satisfies all (exact) equations of motion and constraints from conformal expansion. Nonperturbative input parameters are estimated ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2014
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.90.014011