Hattori, H. ; Kobayashi, T. ; Omoto, N. ; Seto, O.

2015
Verlag Deutsches Elektronen-Synchrotron Hamburg
ISBN: 978-3-935702-43-0

2015Hattori, Hironori "Axion Dark Radiation and its Dilution" in Proceedings, 11th Patras Workshop on Axions, WIMPs and WISPs (Axion-WIMP 2015) / Irastorza, Igor G., Redondo, Javier, Carmona, José Manuel, Cebrian, Susana, Dafni, Theopisti, Iguaz, Francisco J., Luzon, Gloria (eds.), Verlag Deutsches Elektronen-Synchrotron : 2015 ; AXION-WIMP 2015 : 11th Patras Workshop on Axions, WIMPs and WISPs, 2015-06-22 - 2015-06-26, Zaragoza
11th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2015, ZaragozaZaragoza, Spain, 22 Jun 2015 - 26 Jun 20152015-06-222015-06-26 Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-PROC 228-231 (2015) [10.3204/DESY-PROC-2015-02/seto_osamu]2015  

Abstract: Axions in the Peccei-Quinn (PQ) mechanism provide a promising solution to the strong CP problem in the standard model of particle physics. Coherently generated PQ scalar fields could dominate the energy density in the early Universe and decay into relativistic axions, which would conflict with the current dark radiation constraints. We show that a thermal inflation driven by a $U(1)$ gauged Higgs field dilutes such axions. We discuss an available baryogenesis mechanism for the $U(1)_{B-L}$ gauge symmetry.

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings/Report Irastorza, I. G. (Editor) ; Redondo, J. (Editor) ; Carmona, J. M. (Editor) ; Cebrian, S. (Editor) ; Dafni, T. (Editor) ; Iguaz, F. J. (Editor) ; Luzon, G. (Editor)
Proceedings, 11th Patras Workshop on Axions, WIMPs and WISPs (Axion-WIMP 2015)
201511th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2015, ZaragozaZaragoza, Spain, 22 Jun 2015 - 26 Jun 20152015-06-222015-06-26 Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-PROC 1-251 (2015) [10.3204/DESY-PROC-2015-02]2015     Files BibTeX | EndNote: XML, Text | RIS