Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Goritschnig, A. T."'
We study the photoproduction of the vector mesons $\Phi$ and $J/\Psi$ off a proton in the kinematical regime of large energies and scattering angles within the framework of perturbative QCD. Our investigations are based on the hard scattering approac
Externí odkaz:
http://arxiv.org/abs/1411.0904
We calculate timelike virtual Compton scattering amplitudes in the generalized Bjorken scaling regime and focus on a new polarization asymmetry in the scattering process with a linearly polarized photon beam in the medium energy range, which will be
Externí odkaz:
http://arxiv.org/abs/1407.1990
We study the timelike virtual Compton scattering process with a linearly polarized photon beam, in the generalized Bjorken scaling region and in the medium energy range which will be studied intensely at JLab12 experiments. We define new observables
Externí odkaz:
http://arxiv.org/abs/1404.0713
We propose to describe the process $ p ~ \bar{p} \rightarrow \pi^+ ~ \pi^-$ in a perturbative, QCD motivated framework in which a hard $ud \, \bar{u} \bar{d} \rightarrow d \, \bar{d} $ annihilation factorizes from soft transition distribution amplitu
Externí odkaz:
http://arxiv.org/abs/1311.1908
We study the pair-production of heavy mesons in proton-antiproton annihilations within a perturbative QCD-motivated framework. In particular we investigate $p \bar{p} \rightarrow \overline{D^0} D^0$ within a double handbag approach, where a hard subp
Externí odkaz:
http://arxiv.org/abs/1311.1607
We estimate the scattering amplitude of the process $ p \bar{p} \,\to\, \bar{D^0} D^0$ within a double-handbag framework where transition distribution amplitudes, calculated through an overlap representation, factorize from a hard subprocess. This pr
Externí odkaz:
http://arxiv.org/abs/1310.5883
We propose to describe the process $ p \bar{p} \,\to\, \bar{D^0} D^0$ in a perturbative QCD motivated framework where a double-handbag hard process $ u d \bar u \bar d \to \bar{c} c$ factorizes from transition distribution amplitudes, which are quasi
Externí odkaz:
http://arxiv.org/abs/1210.8095
Publikováno v:
Eur.Phys.J.A42:43-62,2009
The process p-pbar -> Lambda_c-Antilambda_c is investigated within the handbag approach. It is shown that the dominant dynamical mechanism, characterized by the partonic subprocess u-ubar -> c-cbar factorizes in the sense that only the subprocess con
Externí odkaz:
http://arxiv.org/abs/0905.2561
Publikováno v:
AIP Conf.Proc.1149:668-671,2009
We study the process $p\bar{p} \to \Lambda_c \bar{\Lambda}_c$ within the generalized parton picture. Our starting point is the double handbag diagram which factorizes into soft generalized parton distributions and a hard subprocess amplitude for $u \
Externí odkaz:
http://arxiv.org/abs/0902.4109
Publikováno v:
PoS LC2008:021,2008
We study proton-antiproton annihilation into $\Lambda_c \bar{\Lambda}_c$ pairs within the generalized parton picture. Our starting point is the double handbag diagram which is shown to factorize into soft generalized parton distributions for the $p \
Externí odkaz:
http://arxiv.org/abs/0811.2661