60 citations · 126 across the 10 of their papers we have counts for
10 papers
Local-nuclear-density dependent calculation of nucleon electromagnetic form factor ratios in finite nuclei
G. Ramalho, K. Tsushima, Myung-Ki Cheoun
We calculate the electromagnetic form factors of nucleons bound in finite nuclei and make predictions to the ratio between the electric () and magnetic () form factor…
Octet baryon electroweak form factors in dense nuclear matter
G. Ramalho, K. Tsushima, Myung-Ki Cheoun
Motivated by the necessity of developing theoretical models for studying the electroweak structure of baryons in a nuclear medium, we apply a covariant quark model to study interac…
Electric and magnetic timelike form factors of hyperons at large transfer momentum
G. Ramalho, M. T. Peña, K. Tsushima +1
There has been considerable progress in the study of the electromagnetic form factors of baryons in the timelike region, through electron-positron scattering reactions ($e^+ e^- \t…
Microscopic study of nuclei synthesis in pycnonuclear reaction C + C in neutron stars
S. P. Maydanyuk, Ju-Jun Xie, V. S. Vasilevsky +1
Purpose To investigate synthesis of nuclei in pycnonuclear reactions in dense medium of neutron stars on the basis of understanding, how the compound nucleus is formed during colli…
Timelike electromagnetic form factors of hyperons at large
G. Ramalho, M. T. Peña, K. Tsushima +1
In the last few years there has been considerable progress in the study of the electromagnetic form factors of baryons in the timelike region, through electron-positron scattering,…
Manifestation of quark effects in nuclei via bremsstrahlung analysis in the proton-nucleus scattering
Sergei P. Maydanyuk, K. Tsushima, G. Ramalho +1
\textbf{Background} (1) The incoherent emission of photons is dominant comparing to coherent one in proton-nucleus scattering. The incoherent bremsstrahlung is very sensitive to th…
Electroweak form factors of baryons in dense nuclear matter
G. Ramalho, K. Tsushima, Myung-Ki Cheoun
There is evidence that the properties of hadrons are modified in a nuclear medium. Information about the medium modifications of the internal structure of hadrons is fundamental fo…
Weak interaction axial form factors of the octet baryons in nuclear medium
G. Ramalho, K. Tsushima, Myung-Ki Cheoun
We study the axial-vector and the induced pseudoscalar form factors associated with the weak transitions between the octet baryon members in nuclear medium, using a covariant const…
Octet baryon electromagnetic form factors in nuclear medium
G. Ramalho, K. Tsushima, A. W. Thomas
We study the octet baryon electromagnetic form factors in nuclear matter using the covariant spectator quark model extended to the nuclear matter regime. The parameters of the mode…
Valence quark contributions for the gamma N -> P11(1440) form factors
G. Ramalho, Kazuo Tsushima
Using a covariant spectator quark model we estimate valence quark contributions to the F1*(Q2) and F2*(Q2) transition form factors for the gamma N -> P11(1440) reaction. The Roper…