Results 11 to 20 of about 76,116 (260)

Nonforward Parton Distributions [PDF]

Physical Review D, 1997
Applications of perturbative QCD to deeply virtual Compton scattering and hard exclusive electroproduction processes require a generalization of usual parton distributions for the case when long-distance information is accumulated in nonforward matrix ...
A. Duncan, A. H. Mueller, A. V. Efremov, A. V. Efremov, A. V. Efremov, A. V. Efremov, A. V. Efremov, A. V. Efremov, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, D. Amati, D. J. Gross, D. Müller, G. Altarelli, G. P. Korchemsky, G. R. Farrar, H. D. Politzer, H. Georgi, I. Halperin, I. I. Balitsky, J. Bartels, J. Blumlein, J. C. Collins, J. C. Collins, J. C. Collins, J. C. Collins, J. D. Bjorken, L. L. Frankfurt, L. V. Gribov, M. G. Ryskin, N. Christ, N. N. Bogolyubov, O. I. Zavialov, P. Hoodbhoy, P. Jain, R. K. Ellis, R. K. Ellis, R. L. Jaffe, R. P. Feynman, S. J. Brodsky, S. J. Brodsky, S. J. Brodsky, S. J. Brodsky, S. Libby, S. N. Nikolaev, S. V. Ivanov, S. V. Mikhailov, T. Appelquist, Th. Braunschweig, V. L. Chernyak, V. L. Chernyak, V. N. Gribov, V. V. Barakhovskii, X. Ji, X. Ji, X. Ji, Yu. L. Dokshitser   +61 more
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Asymmetric Parton Distributions [PDF]

AIP Conference Proceedings, 1997
Applications of perturbative QCD to hard exclusive electroproduction processes in the Bjorken limit at small invariant momentum transfer t bring in a new type of parton distributions which have hybrid properties, resembling both the parton distribution ...
Radyushkin, Anatoly V.
core   +5 more sources

Parton Distributions [PDF]

International Journal of Modern Physics A, 2003
I discuss our current understanding of parton distributions. I begin with the underlying theoretical framework, and the way in which different data sets constrain different partons, highlighting recent developments.
Abe F., Adloff C., Breitweg J., Pumplin J., R. S. THORNE, Thorne R. S., van Neerven W. L.   +6 more
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Nuclear parton distributions [PDF]

EPJ Web of Conferences, 2017
We review a microscopic model of the nuclear parton distribution functions, which accounts for a number of nuclear effects including Fermi motion and nuclear binding, nuclear meson-exchange currents, off-shell corrections to bound nucleon distributions ...
Kulagin S. A.
doaj   +3 more sources

Parton Distributions [PDF]

AIP Conference Proceedings, 2005
I present an overview of some current topics in the measurement of Parton Distribution Functions.Comment: 13 pages, 9 figures. Plenary talk presented at the XIII International Workshop on Deep Inelastic Scattering (DIS 2005), Madison WI USA, April 27-
Pumplin, Jon
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Evolution of Parton Distributions [PDF]

Nuclear Physics B, 1997
I present a highly efficient method for evolving parton distributions in perturbative QCD. The method allows evolving the parton distribution functions according to any of the commonly-used truncations of the evolution equations (which differ in their ...
Altarelli, Blümlein, Caswell, David A. Kosower, Davis, Diemoz, Dokshitser, Floratos, Furmanski, Giele, Glück, Glück, Gross, Jones, Lai, Lai, Martin, Martin, Martin, Ouraou, Politzer, Sterman, Virchaux   +22 more
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Unintegrated generalised parton distributions [PDF]

Physical Review D, 2001
We show how the generalised (or skewed) parton distributions of the proton, H(x, xi; k_t^2, mu^2), unintegrated over the partonic transverse momenta, can be calculated from the known conventional parton distributions, q(x, mu^2) and g(x, mu^2), for small
Martin, A. D., Ryskin, M. G.
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Off-Forward Parton Distributions [PDF]

Journal of Physics G: Nuclear and Particle Physics, 1998
Recently, there have been some interesting developments involving off-forward parton distributions of the nucleon, deeply virtual Compton scattering, and hard diffractive vector-meson production.
, , Abramowicz H, Barone V, Bartels J, Belitsky A V, Braunschweig I, Brodsky S, Brodsky S J, Chen Z, Collins J C, Collins J C, Crittenden J, Dittes F-M, Dokshitser Y L, Efremov A V, Efremov A V, Feynman R P, Geyer B, Glück M, Golec-Biernat K, Gribov V N, Guichon P A M, Göckeler M, Harindranath A, Hoodbhoy P, Hoodbhoy P, Hägler P, Itzykson C, Jain P, Ji X, Ji X, Ji X, Ji X, Makeenko Y M, Mankiewicz L, Mankiewicz L, Mankiewicz L, Martin A, Martin A D, Müller D, Müller D, Pire B, Radyushkin A V, Ryskin M G, See for instance Creutz M, Teryaev O V, Watanabe K, Xiangdong Ji   +48 more
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Polarized parton distributions [PDF]

Physical Review D, 1995
We analyze spin dependent parton distributions consistent with the most recent measurements of the spin dependent deep inelastic scattering structure functions and obtained in the framework of the spin dilution model. Predictions for the doubly polarised proton-proton Drell-Yan asymmetry, for the high $p_{T}$ photon production mechanism and $J ...
de Florian, D., Epele, L. N., Fanchiotti, H., Canal, C. A. Garcia, Sassot, R.   +4 more
openaire   +3 more sources

Unintegrated parton distributions [PDF]

Physical Review D, 2001
We describe how to calculate the parton distributions $f_a(x, k_t^2, ^2)$, unintegrated over the parton transverse momentum $k_t$, from auxiliary functions $h_a(x, k_t^2)$, which satisfy single-scale evolution equations. The formalism embodies both DGLAP and BFKL contributions, and accounts for the angular ordering which comes from coherence effects ...
Kimber, M. A., Martin, A. D., Ryskin, M. G.   +2 more
openaire   +4 more sources