Zobrazeno 1 - 10
of 461
pro vyhledávání: '"Schweiger, W"'
A convenient framework for dealing with hadron structure and hadronic physics in the few-GeV energy range is relativistic quantum mechanics. Unlike relativistic quantum field theory, one deals with a fixed, or at least restricted number of degrees of
Externí odkaz:
http://arxiv.org/abs/1711.04555
Autor:
Kofler, S., Schweiger, W.
We employ the generalized parton picture to analyze the reaction $\pi^- p \rightarrow D^- \Lambda_c^+$. Thereby it is assumed that the process amplitude factorizes into one for the perturbatively calculable subprocess $\bar{u}\ u\rightarrow \bar{c}\
Externí odkaz:
http://arxiv.org/abs/1612.07123
Autor:
Kupelwieser, D., Schweiger, W.
The present contribution continues and extends foregoing work on the calculation of electroweak form factors of hadrons using the point-form of relativistic quantum mechanics. Here we are particularly interested in studying pionic effects on the elec
Externí odkaz:
http://arxiv.org/abs/1510.05521
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 present an outline of recent developments in the field of hadron form-factor calculations within constituent-quark models using the point form of relativistic quantum mechanics. Our method to calculate currents and form factors is exemplified by m
Externí odkaz:
http://arxiv.org/abs/1311.1936
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
Autor:
Jurišić, N *, Schwartz-Zimmermann, H E *, Kunz-Vekiru, E *, Moll, W D, Schweiger, W, Fowler, J, Berthiller, F *
Publikováno v:
In Poultry Science 1 November 2019 98(11):5551-5561
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
Autor:
Kleinhappel, R., Schweiger, W.
In order to get a more realistic description of the hadron spectrum we extend a constituent-quark model by explicit mesonic degrees of freedom. The resulting system of constituent (anti)quarks, which are subject to an instantaneous confining force, a
Externí odkaz:
http://arxiv.org/abs/1109.0127