Nuclear Theory·nucl-th

Friday·October 7, 2016

6 papers—3 primary·3 cross-listed

01
Isospin decomposition of the $γ^{(*)} N \to N^{*}$ transitions as input for constructing models of neutrino-induced reactions in the nucleon resonance region
H. Kamano🇯🇵 · S. X. Nakamura🇯🇵 · T.-S. H. Lee🇺🇸 · T. Sato🇯🇵
We present our recent efforts to determine the matrix elements associated with the transition between the nucleon and a nucleon resonance induced by the vector current, which are necessary ingredients for models of neutrino-induced reactions in the resonance region. This is accomplished by making the comprehensive analysis of the data for various meson photo- and electro-production reactions off the nucleon within a sophisticated coupled-channels framework, which is known as the ANL-Osaka dynamical coupled-channels model. We also give a brief introduction to our project for constructing a unified neutrino reaction model conducted at the J-PARC Branch of the KEK Theory Center.
nucl-thhep-exhep-phnucl-ex1 citation
02
Modern Dynamical Coupled-Channels Calculations for Extracting and Understanding the Nucleon Spectrum
Hiroyuki Kamano🇯🇵
We give an overview of recent progress in the spectroscopic study of nucleon resonances within the dynamical coupled-channels analysis of meson-production reactions. The important role of multichannel reaction dynamics in understanding various properties of nucleon resonances is emphasized.
nucl-thhep-phnucl-exJPS Conf.Proc.(2017)·2 citations
03
Correlations between critical parameters and bulk properties of nuclear matter
O. Lourenço · B. M. Santos · M. Dutra · A. Delfino
The present work starts by providing a clear identification of correlations between critical parameters ( $T_{c}$ , $P_{c}$ , $ρ_{c}$ ) and bulk quantities at zero temperature of relativistic mean-field models (RMF) presenting third and fourth order self-interactions in the scalar field $σ$ . Motivated by the nonrelativistic version of this RMF model, we show that effective nucleon mass ( $M^{*}$ ) and incompressibility ( $K_{o}$ ), at the saturation density, are correlated with $T_{c}$ , $P_{c}$ , and $ρ_{c}$ , as well as, binding energy and saturation density itself. We verify agreement of results with previous theoretical ones regarding different hadronic models. Concerning recent experimental data of the symmetric nuclear matter critical parameters, our study allows a prediction of $T_{c}$ , $P_{c}$ and $ρ_{c}$ compatible with such values, by combining them, through the correlations found, with previous constraints related to $M^{*}$ and $K_{o}$ . An improved RMF parametrization, that better agrees with experimental values for $T_{c}$ , is also indicated.
nucl-thastro-ph.SRPRC(2016)·20 citations

Affiliations

first authorsco-authorsvia INSPIRE

Isospin decomposition of the γ(∗)N→N∗ transitions as input for constructing models of neutrino-induced reactions in the nucleon resonance region

Modern Dynamical Coupled-Channels Calculations for Extracting and Understanding the Nucleon Spectrum

Correlations between critical parameters and bulk properties of nuclear matter

Affiliations

Isospin decomposition of the $γ^{()} N \to N^{}$ transitions as input for constructing models of neutrino-induced reactions in the nucleon resonance region