2009/03/31 by J. N. Esteves, João N. Esteves, M. Hirsch +5
Physics and Astronomy · #Neutrino Physics Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1088/1126-6708/2009/05/003
published as JHEP 0905:003,2009 · 20 pages, 13 figures; minor changes; 4 references added, final version for publication
openalex publication_date 2009/05/05 · arxiv created 2009/05/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We reconsider the role that the possible detection of lepton flavour violating (LFV) decays of supersymmetric particles at the Large Hadron Collider (LHC) can play in helping reconstruct the underlying neutrino mass generation mechanism within the simplest high-scale minimal supergravity (mSUGRA) seesaw schemes. We study in detail the LFV scalar tau decays at the LHC, assuming that the observed neutrino masses arise either through the pure type-I or the simpler type-II seesaw mechanism. We perform a scan over the mSUGRA parameter space in order to identify regions where lepton flavour violating decays of χ02 can be maximized, while respecting current low-energy constraints, such as those coming from the bounds on Br(μ→ e γ). We estimate the cross section for χ02 → χ01 + τ+ μ. Though insufficient for a full reconstruction of the seesaw, the search for LFV decays of supersymmetric states at the LHC brings complementary information to that coming from low energy neutrino oscillation experiments and LFV searches.