Zobrazeno 1 - 10
of 200
pro vyhledávání: '"B. Desplanques"'
Publikováno v:
Physics Letters B. 651:257-262
The parity-violating nucleon–nucleon (NN) potential is considered up to next-to-next-to leading order in heavy-baryon chiral perturbation theory. We include one-pion exchange at leading order and the two-pion exchange and two-nucleon contact terms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cbc5a7988321ba8b92365e80c8a0aee
https://doi.org/10.1016/j.physletb.2007.06.011
https://doi.org/10.1016/j.physletb.2007.06.011
Autor:
B. Desplanques
Publikováno v:
International Journal of Modern Physics A
Aug 2004, Beijing, pp.1601-1606, ⟨10.1142/S0217751X05023050⟩
Aug 2004, Beijing, pp.1601-1606, ⟨10.1142/S0217751X05023050⟩
Calculations of form factors in different forms of relativistic kinematics are presented. They involve the instant, front and point forms. In the two first cases, different kinematical conditions are considered while in the latter case, both a Dirac-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e4698b8836c2e5b810c72c1e208d3fb
https://doi.org/10.1142/s0217751x05023050
https://doi.org/10.1142/s0217751x05023050
Publikováno v:
Nuclear Physics A
Nuclear Physics A, Elsevier, 2003, 714, pp.213-249. ⟨10.1016/S0375-9474(02)01370-2⟩
Nuclear Physics A, Elsevier, 2003, 714, pp.213-249. ⟨10.1016/S0375-9474(02)01370-2⟩
The effect of different boost expressions is considered for the calculation of the ground-state form factor of a two-body system made of scalar particles interacting via the exchange of a scalar boson. The aim is to provide an uncertainty range on me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::656a7dcae60e8c54a0f93a303a78842e
https://doi.org/10.1016/s0375-9474(02)01370-2
https://doi.org/10.1016/s0375-9474(02)01370-2
Publikováno v:
IEEE Transactions on Nuclear Science. 49:2268-2273
In magnetic resonance (MR), imaging methods that use a non-Cartesian (e.g., spiral) sampling grid in k-space are becoming increasingly important. Reconstruction is then usually performed by resampling the data on a Cartesian grid, followed by fast Fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::289fca4ca102bcc29a98956bc043fa34
https://doi.org/10.1109/tns.2002.803673
https://doi.org/10.1109/tns.2002.803673
Publikováno v:
Nuclear Physics A
Nuclear Physics A, Elsevier, 2001, 694, pp.439-469. ⟨10.1016/S0375-9474(01)00994-0⟩
Nuclear Physics A, Elsevier, 2001, 694, pp.439-469. ⟨10.1016/S0375-9474(01)00994-0⟩
It is known that binding energies calculated from the Bethe-Salpeter equation in ladder approximation can be reasonably well accounted for by an energy-dependent interaction, at least for the lowest states. It is also known that none of these approac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b846c72c9b5a59ad6067d8b3ffccf63
https://doi.org/10.1016/s0375-9474(01)00994-0
https://doi.org/10.1016/s0375-9474(01)00994-0
Autor:
B. Desplanques
Publikováno v:
Physics Letters B. 512:305-313
The parity-non-conserving (pnc) asymmetry in \vec{n} + p \to d+\gamma at thermal energies has recently been calculated using effective field-theory methods. A comparison of this calculation with much more elaborate calculations performed in the 70's
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::265c3c561d0e98e8b9bb3fc9ffb8d300
https://doi.org/10.1016/s0370-2693(01)00713-4
https://doi.org/10.1016/s0370-2693(01)00713-4
Publikováno v:
The European Physical Journal A. 1:85-90
In the present work, contributions to the deuteron electromagnetic structure due to exchange currents involving the ΔΔ component are studied. For a 0.88% probability of this component, it is found that a substantially important contribution to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ffd99e03cc99b8febdb7c398eacc54c
https://doi.org/10.1007/s100500050035
https://doi.org/10.1007/s100500050035
Publikováno v:
Zeitschrift für Physik A
Zeitschrift für Physik A, Springer-Verlag, 1997, 359, pp.315-319
Zeitschrift für Physik A, Springer-Verlag, 1997, 359, pp.315-319
Strong pionic decays of baryons are studied in a non-relativistic quark model framework via a convergent (p/E) expansion of the transition operator. Results are compared to the ones obtained within a more conventional (p/m) expansion.
16 pages,
16 pages,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::959c82568f9e605c6d15a79edd944bd8
https://doi.org/10.1007/s002180050407
https://doi.org/10.1007/s002180050407
Publikováno v:
Cano, F. González Marhuenda, Pedro Noguera Puchol, Santiago Desplanques, B. 1996 Strong pionic decays of baryons from a spectroscopic quark model Nuclear Physics A 603 3-4 257 280
RODERIC. Repositorio Institucional de la Universitat de Valéncia
instname
Nuclear Physics A
Nuclear Physics A, Elsevier, 1996, 603, pp.257-280
RODERIC. Repositorio Institucional de la Universitat de Valéncia
instname
Nuclear Physics A
Nuclear Physics A, Elsevier, 1996, 603, pp.257-280
From a refined non-relativistic quark model that fits the baryonic low-energy spectrum the study of strong pion decay processes within an elementary emission model scheme points out the need of incorporating size-contributing components into the bary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6026b6972584af8501adcf6f02647949
https://doi.org/10.1016/0375-9474(96)80002-9
https://doi.org/10.1016/0375-9474(96)80002-9
Publikováno v:
Nuclear Physics A. 684:310-312
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20038b40e893be961c40f6708b67f52a
https://doi.org/10.1016/s0375-9474(01)00507-3
https://doi.org/10.1016/s0375-9474(01)00507-3