Results 11 to 20 of about 73,606 (214)

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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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
core   +2 more sources

Polarised parton distributions [PDF]

Physical Review D, 1994
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
Canal, C. A. Garcia, de Florian, D., Epele, L. N., Fanchiotti, H., Sassot, R.   +4 more
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Are Parton Distributions Positive? [PDF]

Nuclear Physics B - Proceedings Supplements, 1998
We show that the naive positivity conditions on polarized parton distributions which follow from their probabilistic interpretation in the naive parton model are reproduced in perturbative QCD at the leading log level if the quark and gluon distribution ...
Altarelli, Altarelli, Altarelli, Altarelli, Bardeen, Dawson, Djouadi, Ellis, Giovanni Ridolfi, Guido Altarelli, Kodaira, Lai, Stefano Forte   +12 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

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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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
core   +2 more sources

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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Parton distributions of the proton [PDF]

Physical Review D, 1994
preprint DTP/94/34, 26 pages, 21 figures (not included, available on request)
Martin, A. D., Roberts, R. G., Stirling, W. J.   +2 more
openaire   +3 more sources

PARTONIC INTERPRETATION OF GENERALIZED PARTON DISTRIBUTIONS [PDF]

International Journal of Modern Physics: Conference Series, 2011
Dispersion relations have been applied to hard exclusive processes suggesting that generalized parton distributions can be fully determined from their values on a kinematical ridge. We show significant pitfalls associated that vitiate this approach. We suggest an improved treatment of this assumption.
Goldstein, Gary R., Liuti, Simonetta
openaire   +2 more sources