Uncertainty quantification for proton-proton fusion in chiral effective field theory

B. Acharya, B. D. Carlsson, A. Ekström +2

We compute the $S$-factor of the proton-proton ($pp$) fusion reaction using chiral effective field theory ($\chi$EFT) up to next-to-next-to-leading order (NNLO) and perform a rigorous…