2023 Impact factor 4.2
Particles and Fields
Eur. Phys. J. C 28, 365-374 (2003)
DOI: 10.1140/epjc/s2003-01184-6

Probing the Majorana mass scale of right-handed neutrinos in mSUGRA

F. Deppisch1, H. Päs1, A. Redelbach1, R. Rückl1 and Y. Shimizu2

1  Institut für Theoretische Physik und Astrophysik, Universität Würzburg, 97074 Würzburg, Germany
2  Department of Physics, Nagoya University, Nagoya 464-8602, Japan

(Received: 14 June 2002 / Revised version: 7 January 2003 / Published online: 14 April 2003 )

We discuss the perspectives of testing the right-handed Majorana mass scale MR of the SUSY see-saw model in the mSUGRA framework. Lepton-flavor violating low energy processes are analyzed in recently proposed post-LEP benchmark scenarios, taking into account present uncertainties and future developments in the neutrino sector. Non-observation of $\mu \rightarrow e \gamma$ in the next-generation PSI experiment will provide upper bounds on MR of the order of $10^{12\div
14}$ GeV, while on the other hand, a positive signal for $\tau \rightarrow \mu \gamma$ at SUPERKEKB or the LHC may determine MR for a given mSUGRA scenario with an accuracy of a factor of 2.

© Società Italiana di Fisica, Springer-Verlag 2003