Electromagnetic transition form factors of the Roper resonance in effective field theory

T. Bauer, S. Scherer, L. Tiator

Published 2014-02-04Version 1

We analyze the form factors of the electromagnetic nucleon-to-Roper-resonance transition in the framework of low-energy effective field theory. A systematic power-counting procedure is generated by applying the complex-mass scheme. Within this power counting we calculate the form factors to next-to-next-to-leading order and fit the results to empirical data.