Year: 2014
Type: article
Abstract: We reconsider thermal production of axions in the early universe, including axion couplings to all Standard Model (SM>) particles. Concerning the axion coupling to gluons, we find that thermal effects enhance the axion production rate by a factor of few with respect to previous computations performed in the limit of small strong gauge coupling. Furthermore, we find that the top Yukawa coupling induces a much larger axion production rate, unless the axion couples to SM particles only via anomalies.
Authors: Alberto Salvio, Alessandro Strumia, Wei Xue
Institutions: Instituto de Física Teórica, Universidad Autónoma de Madrid, University of Pisa, Istituto Nazionale di Fisica Nucleare, National Institute of Chemical Physics and Biophysics, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, Scuola Internazionale Superiore di Studi Avanzati, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,290
Awards: G2804322916, G4590704245
OpenAlex ID: W2135507082