2001/06/04 by G. Altarelli, Guido Altarelli, F. Caravaglios +7 · 7 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1088/1126-6708/2001/06/018
published as JHEP 0106:018,2001 · 17 pages LaTex, 9 figures, uses epsfig
arxiv created 2001/06/04 · openalex publication_date 2001/06/06 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The present Standard Model fit of precision data has a low confidence level, and is characterized by a few inconsistencies. We look for supersymmetric effects that could improve the agreement among the electroweak precision measurements and with the direct lower bound on the Higgs mass. We find that this is the case particularly if the 3.6 sigma discrepancy between sin2 thetaeff from leptonic and hadronic asymmetries is finally settled more on the side of the leptonic ones. After the inclusion of all experimental constraints, our analysis selects light sneutrinos, with masses in the range 55-80 GeV, and charged sleptons with masses just above their experimental limit, possibly with additional effects from light gauginos. The phenomenological implications of this scenario are discussed.