Zobrazeno 1 - 10
of 22
pro vyhledávání: '"P. V. Pobylitsa"'
Autor:
M. V. Polyakov, P. V. Pobylitsa
Publikováno v:
Physics Letters B. 389:350-357
At large N_c the nucleon can be viewed as a soliton of the effective chiral lagrangian. This picture of nucleons allows a consistent nonperturbative calculation of the leading-twist parton distributions at a low normalization point. We derive general
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08cbeba253a96bbee6eca979c3056c67
https://doi.org/10.1016/s0370-2693(96)01288-9
https://doi.org/10.1016/s0370-2693(96)01288-9
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics. 18:1455-1466
The authors consider the collective quantization of translational degrees of freedom of the hedgehog soliton in the Nambu-Jona-Lasinio model. They show explicitly that for an O(4)-invariant regularization scheme in Euclidean space-time the translatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fea4d11409a8829f8d7ceb903a7649a9
https://doi.org/10.1088/0954-3899/18/9/008
https://doi.org/10.1088/0954-3899/18/9/008
Publikováno v:
Physical Review D. 72
Several positivity bounds are derived for generalized parton distributions (GPDs) with helicity flip.
Comment: 20 pages
Comment: 20 pages
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74aa816871695044b38998804da41a32
https://doi.org/10.1103/physrevd.72.054019
https://doi.org/10.1103/physrevd.72.054019
Autor:
P. V. Pobylitsa
Publikováno v:
Large NC QCD 2004.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f26b6ae2ad7791f606de73e206f3bc2d
https://doi.org/10.1142/9789812701725_0022
https://doi.org/10.1142/9789812701725_0022
Baryon wave function in large-NcQCD: Universality, nonlinear evolution equation and asymptotic limit
Autor:
P. V. Pobylitsa
Publikováno v:
Physical Review D. 71
The 1/Nc expansion is formulated for the baryon wave function in terms of a specially constructed generating functional. The leading order of this 1/Nc expansion is universal for all low-lying baryons [including the O(1/Nc) and O(Nc^0) excited resona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd01e98a6fb09b01ebf1dfafee58fb17
https://doi.org/10.1103/physrevd.71.076002
https://doi.org/10.1103/physrevd.71.076002
Autor:
P. V. Pobylitsa
The 1/N_c expansion for the baryon distribution amplitude is constructed in terms of a specially designed generating functional. At large N_c this functional shows exponential behavior. The exponential factor is universal for all low-lying baryons an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3a91eca9aff3986fe2050c465b4c757
http://arxiv.org/abs/hep-ph/0501159
http://arxiv.org/abs/hep-ph/0501159
Autor:
P. V. Pobylitsa
Publikováno v:
Physical Review D. 70
The positivity bounds on generalized parton distributions are derived from the positivity properties of the absorptive part of the amplitude of the virtual Compton scattering in the generalized Bjorken region.
Comment: 9 pages
Comment: 9 pages
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21d9dc50b624218e717bf19b904e1132
https://doi.org/10.1103/physrevd.70.034004
https://doi.org/10.1103/physrevd.70.034004
Autor:
P. V. Pobylitsa
The status of exotic baryons is analyzed in the limit of a large number of colors Nc. Several toy models reproducing the main features of the large-Nc QCD are studied in order to clarify the recent controversy concerning the consistency of various ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06e60526f3ec9e4a480553df2871f279
http://arxiv.org/abs/hep-ph/0310221
http://arxiv.org/abs/hep-ph/0310221
Autor:
P. V. Pobylitsa
Publikováno v:
Physical Review D. 67
An integral representation is suggested for generalized parton distributions which automatically satisfies the polynomiality and positivity constraints. This representation has the form of an integral of perturbative triangle diagrams over the masses
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b581ad0adc13a91f25cd3dce448fdbf4
https://doi.org/10.1103/physrevd.67.094012
https://doi.org/10.1103/physrevd.67.094012
Autor:
P. V. Pobylitsa
Publikováno v:
Physical Review D. 67
An integral representation for generalized parton distributions of spin-0 hadrons is suggested, which satisfies both polynomiality and positivity constraints.
7 pages
7 pages
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2ea899fa62e193bec708118c910c9f2
https://doi.org/10.1103/physrevd.67.034009
https://doi.org/10.1103/physrevd.67.034009