Factorization model for distributions of quarks in hadrons
We consider distributions of unpolarized (polarized) quarks in unpolarized (polarized) hadrons. Our approach is based on QCD factorization. We begin with a study of the basic factorization for the parton–hadron scattering amplitudes in the forward kinematics and suggest a model for non-perturbative...
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| Veröffentlicht in: | The European physical journal. C, Particles and fields Particles and fields, 2015-07, Vol.75 (7), p.1-13, Article 306 |
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| container_title | The European physical journal. C, Particles and fields |
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| creator | Ermolaev, B. I. Greco, M. Troyan, S. I. |
| description | We consider distributions of unpolarized (polarized) quarks in unpolarized (polarized) hadrons. Our approach is based on QCD factorization. We begin with a study of the basic factorization for the parton–hadron scattering amplitudes in the forward kinematics and suggest a model for non-perturbative contributions to such amplitudes. This model is based on this simple observation: after emitting an active quark by the initial hadron, the remaining set of quarks and gluons becomes unstable, so a description of this colored state can approximately be done in terms of resonances, which leads to expressions of the Breit–Wigner type. Then we reduce these formulas to obtain explicit expressions for the quark–hadron scattering amplitudes and quark distributions in
K
T
- and collinear factorizations. |
| doi_str_mv | 10.1140/epjc/s10052-015-3483-9 |
| format | Article |
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K
T
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K
T
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K
T
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| language | eng |
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| source | DOAJ Directory of Open Access Journals; SpringerLink Journals; EZB-FREE-00999 freely available EZB journals; Springer Nature OA Free Journals |
| subjects | Analysis Astronomy Astrophysics and Cosmology Elementary Particles Factorization Gluons Hadrons Heavy Ions Kinematics Mathematical models Measurement Science and Instrumentation Nuclear Energy Nuclear Physics Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Quarks Regular Article - Theoretical Physics Scattering amplitude String Theory Texts |
| title | Factorization model for distributions of quarks in hadrons |
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