Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Tancredi, N."'
Publikováno v:
Eur.Phys.J.A9:109-114,2000
The form factors of the weak currents, which appear in the semileptonic decays of the heavy pseudoscalar mesons, are calculated within the quark confinement model by taking into account, for the first time, the structure of heavy meson vertex and the
Externí odkaz:
http://arxiv.org/abs/hep-ph/9905209
Publikováno v:
Mod.Phys.Lett. A13 (1998) 1845-1852
The form factors for the weak currents between B and light mesons are studied by relating them to the corresponding D form factors at q^2_{max} according to HQET, by evaluating them at q^2=0 by QCD sum rules, and by assuming a polar q^2 dependence. T
Externí odkaz:
http://arxiv.org/abs/hep-ph/9808318
Autor:
Esposito, S., Tancredi, N.
Publikováno v:
Eur.Phys.J.C4:221-230,1998
From a phenomenological point of view, we study active-active and active-sterile flavour-changing (and flavour-conserving) oscillations of Dirac-Majorana neutrinos both in vacuum and in matter. The general expressions for the transition probabilities
Externí odkaz:
http://arxiv.org/abs/hep-ph/9803471
Autor:
Cuña, A., Reyes Plascencia, C., da Silva, E.L., Marcuzzo, J., Khan, S., Tancredi, N., Baldan, M.R., de Fraga Malfatti, C.
Publikováno v:
In Applied Catalysis B: Environment and Energy March 2017 202:95-103
Autor:
Esposito, S., Tancredi, N.
Publikováno v:
Mod.Phys.Lett.A12:1829-1838,1997
We study Pontecorvo neutrino-antineutrino oscillations both in vacuum and in matter within a field theoretic approach, showing that this phenomenon can occur only if neutrinos have a Dirac-Majorana mass term. We find that matter effects suppress thes
Externí odkaz:
http://arxiv.org/abs/hep-ph/9705351
A quantum statistical parametrization of parton distributions has been considered. In this framework, the exclusion Pauli principle connects the violation of the Gottfried sum rule with the Ellis and Jaffe one, and implies a defect in the Bjorken sum
Externí odkaz:
http://arxiv.org/abs/hep-ph/9607338
Publikováno v:
Prog.Theor.Phys. 96 (1996) 749-770
Quantum statistical distributions for the partons provide a fair description of deep inelastic scattering data at $Q^2 = 3$ and $10 (GeV/c)^2$. The study of the polarized structure functions seems to suggest an alternative possible solution of the {\
Externí odkaz:
http://arxiv.org/abs/hep-ph/9604230
Akademický článek
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Publikováno v:
In Journal of Hazardous Materials 2009 172(1):13-19
Autor:
Magalhães, F., Pereira, M.C., Fabris, J.D., Bottrel, S.E.C., Sansiviero, M.T.C., Amaya, A., Tancredi, N., Lago, R.M.
Publikováno v:
In Journal of Hazardous Materials 2009 165(1):1016-1022