Chiral-EFT corrections to Gamow-Teller transitions in light nuclei

Chiral effective field theory ($\chi$EFT) is a framework to systematically derive internucleon interactions, like the LENPIC interaction, and electroweak currents. We have constructed the Gamow-Teller (GT) transition operator from the one-body and two-body weak axial currents. The operator is consistent with the LENPIC interaction up to N2LO. We have applied this operator within the no-core shell model (NCSM) approach to light nuclei. We present preliminary results for the GT transition matrix elements calculated in a harmonic oscillator basis. We also discuss the convergence of the transition matrix elements at each chiral order as function of the basis expansion, and the impact of the $\chi$EFT regulator on the operator.