Zobrazeno 1 - 10
of 7 171
pro vyhledávání: '"GPDs"'
We identify the matrix elements necessary to determine the chiral-even $H_g,~E_g,~\widetilde{H}_g,~\widetilde{E}_g$ and chiral-odd $H^T_g,~E^T_g, \widetilde{H}^T_g ,~\widetilde{E}^T_g$ gluon generalized parton distributions (GPDs) in lattice QCD calc
Externí odkaz:
http://arxiv.org/abs/2412.14110
Autor:
Nematollahi, H., Azizi, K.
We calculate the valence generalized parton distribution functions (GPDs) of pion at zero skewness applying a theoretical approach in which the valence GPDs are related to valence quark distribution functions, directly. To this end, we use the result
Externí odkaz:
http://arxiv.org/abs/2412.13322
Generalized Parton Distributions (GPDs) are multidimensonal structure functions that encode the information about the internal structure of hadrons. Using privileged channels such as Deeply Virtual Compton Scattering (DVCS) or Timelike Compton Scatte
Externí odkaz:
http://arxiv.org/abs/2412.03133
Autor:
Mamo, Kiminad A., Zahed, Ismail
We introduce a string-based parametrization for nucleon quark and gluon generalized parton distributions (GPDs) that is valid for all skewness. Our approach leverages conformal moments, representing them as the sum of spin-j nucleon A-form factor and
Externí odkaz:
http://arxiv.org/abs/2411.04162
Hadron-to-two-hadron transition generalized parton distributions (GPDs) extend the concept of hadron-to-resonance transition GPDs and provide a unified description of non-diagonal hard exclusive reactions in the generalized Bjorken limit. We present
Externí odkaz:
http://arxiv.org/abs/2410.11388
Publikováno v:
Phys. Rev. D 110, 094030 (2024)
We investigate quantum chromodynamics (QCD) in this study by computing chiral-even generalized parton distributions (GPDs) at twist-$3$ using the light-front quark-diquark model (LFQDM), particularly when the longitudinal momentum transfer is zero. W
Externí odkaz:
http://arxiv.org/abs/2408.07332
Exclusive photoproduction of heavy $J/\psi$ meson is performed within handbag factorization method. The General Parton Distributions (GPDs) for gluons which are an essential ingredient here, are constructed using double distribution (DD) representati
Externí odkaz:
http://arxiv.org/abs/2408.05800
Autor:
Tan, Chentao, Lu, Zhun
We investigate the chiral-even twist-3 generalized parton distributions (GPDs) of valence quarks in the proton at nonzero skewness $\xi$, using a spectator model with scalar and axial-vector diquarks. We consider the exponential form factor for the n
Externí odkaz:
http://arxiv.org/abs/2407.17448
Autor:
Qiu, Jian-Wei, Yu, Zhite
Publikováno v:
PoS (DIS2024) 207
We introduce a new type of exclusive processes for a better study of generalized parton distributions (GPDs), which we refer to as single-diffractive hard exclusive processes (SDHEPs). We advocate a two-stage framework for picturing SDHEPs based on t
Externí odkaz:
http://arxiv.org/abs/2407.11304
Autor:
Dutrieux, Hervé, Edwards, Robert G., Egerer, Colin, Karpie, Joseph, Monahan, Christopher, Orginos, Kostas, Radyushkin, Anatoly, Richards, David, Romero, Eloy, Zafeiropoulos, Savvas
Publikováno v:
JHEP 08 (2024) 162
We present an exploration of the unpolarized isovector proton generalized parton distributions (GPDs) $H^{u-d}(x, \xi, t)$ and $E^{u-d}(x, \xi, t)$ in the pseudo-distribution formalism using distillation. Taking advantage of the large kinematic cover
Externí odkaz:
http://arxiv.org/abs/2405.10304