TY - JOUR
T1 - Electromagnetic processes in χeFT
AU - Pastore, S.
AU - Schiavilla, R.
AU - Goity, J. L.
PY - 2009/4/30
Y1 - 2009/4/30
N2 - Nuclear electromagnetic currents derived in a chiral-effective-field-theory framework including explicit nucleons, Δ isobars, and pions up to N 2LO, i.e. ignoring loop corrections, are used in a study of neutron radiative captures on protons and deuterons at thermal energies, and of A=2 and 3 nuclei magnetic moments. With the strengths of the Δ-excitation currents determined to reproduce the n-p cross section and isovector combination of the trinucleon magnetic moments, we find that the cross section and photon circular polarization parameter, measured respectively in n-d and n→ - d processes, are significantly underpredicted by theory.
AB - Nuclear electromagnetic currents derived in a chiral-effective-field-theory framework including explicit nucleons, Δ isobars, and pions up to N 2LO, i.e. ignoring loop corrections, are used in a study of neutron radiative captures on protons and deuterons at thermal energies, and of A=2 and 3 nuclei magnetic moments. With the strengths of the Δ-excitation currents determined to reproduce the n-p cross section and isovector combination of the trinucleon magnetic moments, we find that the cross section and photon circular polarization parameter, measured respectively in n-d and n→ - d processes, are significantly underpredicted by theory.
UR - https://www.scopus.com/pages/publications/67649185713
U2 - 10.1142/s0217732309000310
DO - 10.1142/s0217732309000310
M3 - Article
AN - SCOPUS:67649185713
SN - 0217-7323
VL - 24
SP - 931
EP - 936
JO - Modern Physics Letters A
JF - Modern Physics Letters A
IS - 11-13
ER -