Abstract
We give an overview for the bounds of Majoron-neutrino coupling constants from supernova and accelerators. Using the accurate known value for the invisible partial width for Z boson we obtained constraints on the coupling of the Majoron to two neutrinos, for singlet Majoron model, in case of 3+1 dimensions as well as in extra dimensions, where we assumed the singlet Majoron can propagate in higher dimensions. We found that the predicted coupling constants are far below these upper bounds if a natural see-saw is adopted. Also, the expected increase in Z partial width due to many Kaluza-Klein excitations has been suppressed due to the decrease of the coupling constants.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
