scholarly journals Influence of Neutral Currents on Electron and Gamma Polarizations in the Processe+N→e′+N+γ

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
N. V. Samsonenko ◽  
Adamou Ousmane Manga ◽  
Almoustapha Aboubacar ◽  
Aboubacar Moussa

The differential cross section of electron inelastic scattering by nuclei followed byγradiation is calculated using the multipole decomposition of the hadronic currents and by taking into account the longitudinal polarization of the initial electron and the circular polarization of theγradiation. We performed the analysis of the angular and energy dependence of the degree of electron and photon polarization which can yield information on values of weak neutral currents parameters.

1996 ◽  
Vol 74 (7-8) ◽  
pp. 505-508 ◽  
Author(s):  
R. M. Finch ◽  
Á. Kövér ◽  
M. Charlton ◽  
G. Laricchia

Differential cross sections for elastic scattering and ionization in positron–argon collisions as a function of energy (40–150 eV) are reported at 60°. Of particular interest is the energy range 55–60 eV, where earlier measurements by the Detroit group found a drop in the elastic-scattering cross section of a factor of 2. This structure has been tentatively attributed to a cross channel-coupling effect with an open inelastic-scattering channel, most likely ionization. Our results indicate that ionization remains an important channel over the same energy range and only begins to decrease at an energy above 60 eV.


1988 ◽  
Vol 03 (03) ◽  
pp. 721-729 ◽  
Author(s):  
P. RAM BABU

We have considered the ‘neutrino counting’ reaction [Formula: see text]. We restrict to V, A Lorentz structure of weak neutral interaction (WNI), allow many Z bosons to mediate WNI and νi to be different from νj. We derive the expression for differential cross section by allowing the polarizations of e+ and e− but summing over the polarizations of final photons. From the study of differential cross section with polarized and unpolarized beams three different coupling constant combinations can be determined. A definite relation between these observables and the observables in [Formula: see text] scatterings is suggested as a test of single-Z-boson hypothesis. Similarly another test relates observables in [Formula: see text] to those of [Formula: see text] scatterings. By assuming universality a test for presence of nondiagonal neutrino neutral currents (NDνNC’s) is also pointed out. The effects of presence of wrong-handed (anti-) neutrinos on our tests are also discussed. As a by-product, we find a way to determine number of neutrino types, in the case i≠j, assuming universality.


2011 ◽  
Vol 89 (7) ◽  
pp. 799-807
Author(s):  
R. Arceo ◽  
A. Sandoval ◽  
E. Belmont ◽  
C. Alvarez

The study of the nuclear structure for the elements 12C, 40Ca, and 6Li has been performed in the momentum range from 0 to 0.8 GeV/c by using K+N phase shifts. An optical potential is used to calculate the elastic differential cross section and total cross section for K+ scattering from 12C, 40Ca, and 6Li. Comparison with previous experiments shows better results for the elements 6Li and 40Ca and fair agreement for the element 12C.


2009 ◽  
Vol 113 (52) ◽  
pp. 14636-14649 ◽  
Author(s):  
F. J. Aoiz ◽  
J. E. Verdasco ◽  
M. Brouard ◽  
J. Kłos ◽  
S. Marinakis ◽  
...  

1978 ◽  
Vol 44 (4) ◽  
pp. 1337-1343 ◽  
Author(s):  
Yasunori Yamazaki ◽  
Ryuichi Shimizu ◽  
Kazuyuki Ueda ◽  
Hatsujiro Hashimoto

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