In models with large extra dimensions all gauge singlet fields can in principle propagate in the extra dimensional space. We have investigated possible constraints on Majoron models of neutrino masses in which the Majorons propagate in extra dimensions. It is found that astrophysical constraints from supernovae are many orders of magnitude stronger than previous accelerator bounds. Our findings suggest that unnatural types of the "seesaw" mechanism for neutrino masses are unlikely to occur in nature, even in the presence of extra dimensions. © 2002 The American Physical Society.
Supernova constraint on bulk Majorons / Hannestad, S.; Keranen, P.; Sannino, F.. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - 66:4(2002). [10.1103/PhysRevD.66.045002]
Supernova constraint on bulk Majorons
Sannino F.Co-primo
Conceptualization
2002
Abstract
In models with large extra dimensions all gauge singlet fields can in principle propagate in the extra dimensional space. We have investigated possible constraints on Majoron models of neutrino masses in which the Majorons propagate in extra dimensions. It is found that astrophysical constraints from supernovae are many orders of magnitude stronger than previous accelerator bounds. Our findings suggest that unnatural types of the "seesaw" mechanism for neutrino masses are unlikely to occur in nature, even in the presence of extra dimensions. © 2002 The American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
