RT Journal Article
T1 Confronting grand unification with lepton flavour violation, dark matter and LHC data
A1 Ellis, J.
A1 Gómez Santamaría, Mario Emilio
A1 Ruiz de Austri, R.
A1 Shafi, Qaisar
AB We explore possible signatures for charged lepton flavour violation (LFV),sparticle discovery at the LHC and dark matter (DM) searches in grand unified theories(GUTs) based on SU(5), flipped SU(5) (FSU(5)) and SU(4)c×SU(2)L×SU(2)R (4-2-2).We assume that soft supersymmetry-breaking terms preserve the group symmetry at somehigh input scale, and focus on the non-universal effects on different matter representationsgenerated by gauge interactions at lower scales, as well as the charged LFV induced inType-1 see-saw models of neutrino masses. We identify the different mechanisms thatcontrol the relic DM density in the various GUT models, and contrast their LFV and LHCsignatures. The SU(5) and 4-2-2 models offer good detection prospects both at the LHCand in LFV searches, though with different LSP compositions, and the SU(5) and FSU(5)models offer LFV within the current reach. The 4-2-2 model allows chargino and gluinocoannihilations with neutralinos, and the former offer good detection prospects for both theLHC and LFV, while gluino coannihilations lead to lower LFV rates. Our results indicatethat LFV is a powerful tool that complements LHC and DM searches, providing significantinsights into the sparticle spectra and neutrino mass parameters in different models.
PB Springer Verlag
SN 1126-6708
YR 2020
FD 2020-09
LK http://hdl.handle.net/10272/19016
UL http://hdl.handle.net/10272/19016
LA eng
NO Ellis, J., Gómez Santamaría, M. E.,  Ruiz de Austri, R. ... Shafi, Q. (2020). Confronting grand unification with lepton flavour violation, dark matter and LHC data. Journal of High Energy Physics, 2020(9). DOI: https://doi.org/10.1007/jhep09(2020)197
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026