Stellar energy loss rates in the pair-annihilation process beyond the standard model M. A. Hernández-Ruíz, A. Gutiérrez-Rodríguez and A. González-Sánchez Eur. Phys. J. A, 53 1 (2017) 16 Published online: 27 January 2017 DOI: 10.1140/epja/i2017-12207-8