Zobrazeno 1 - 10
of 325
pro vyhledávání: '"Rekalo, A. P."'
We generalize the recoil polarization method for the determination of the proton form factor to the case of the disintegration of vector polarized deuterons by longitudinally polarized electrons, $\vec d(\vec e, e'n)p$. We suggest to measure for this
Externí odkaz:
http://arxiv.org/abs/nucl-th/0309065
Publikováno v:
Phys.Rev.C83:025202,2011
A general formalism is developed to calculate the cross section and the polarization observables for the reaction $\bar N+N\to \pi +\ell^++\ell^-$. The matrix element and the observables are expressed in terms of six scalar amplitudes (complex functi
Externí odkaz:
http://arxiv.org/abs/1011.4013
This note collects formulas relative to the energy dependence of the cross sections for open charm and $J/\psi$ production for $NN$-collisions at threshold. It is a basis for the best input to MonteCarlo calculations, for associative charm particle p
Externí odkaz:
http://arxiv.org/abs/0810.4250
We briefly summarize the status with electromagnetic nucleon form factors, and give in this framework, arguments to study the angular dependence of the differential cross section and single-spin polarization phenomena (polarized target or polarized b
Externí odkaz:
http://arxiv.org/abs/0810.4245
Hadron electromagnetic form factors contain dynamical information on the intrinsic structure of the hadrons. The pioneering work developed at the Kharkov Physical-Technical Institute in the 60's on the relation between the polarized cross section and
Externí odkaz:
http://arxiv.org/abs/hep-ph/0610309
Publikováno v:
Phys.Atom.Nucl. 69 (2006) 909-914
We derive, in model independent way, the spin structure of the matrix element for the reaction of associative $\Theta^+$ pentaquark production, $\pi^{\pm}+D\to \Theta^+ +\Sigma^{\pm}, $ in the threshold region and in collinear kinematics. The express
Externí odkaz:
http://arxiv.org/abs/hep-ph/0504039
Publikováno v:
Annals Phys. 319 (2005) 150-216
A general formalism for the calculation of the differential cross section and polarization observables, for the process of deuteron electrodisintegration, is developed in the framework of relativistic impulse approximation. A detailed analysis of the
Externí odkaz:
http://arxiv.org/abs/hep-ph/0412112
Publikováno v:
Phys.Lett. B599 (2004) 247-252
We show that definite polarization observables for the simplest electroproduction processes, $\ell+N\to \ell+B(1/2^\pm)+M(0^\pm)$, $B=Y(\Lambda, \Sigma$ or $Y_c$-hyperon, $\Theta^+$-pentaquark) and $M=K$, $\bar{K}$ or $D$, are sensitive to the relati
Externí odkaz:
http://arxiv.org/abs/hep-ph/0405027
Publikováno v:
Eur.Phys.J. A22 (2004) 119-124
Using the symmetry properties of the strong interaction, such as the Pauli principle, the P-invariance, the conservation of the total angular momentum and isotopic invariance, we establish the spin structure of the threshold matrix elements for the p
Externí odkaz:
http://arxiv.org/abs/hep-ph/0402277
Autor:
Rekalo, M. P., Tomasi-Gustafsson, E.
Publikováno v:
Nucl.Phys.A742:322-334,2004
We analyze polarization phenomena for elastic lepton-nucleon scattering, parametrizing the $2\gamma$-exchange contribution, as the product of lepton and nucleon axial vector currents, that correspond to $C=+1$ exchange in the annihilation channel. We
Externí odkaz:
http://arxiv.org/abs/nucl-th/0402004