Type: Article
Publication Date: 1996-01-01
Citations: 50
DOI: https://doi.org/10.1103/physrevd.53.555
We calculate the contribution of second generation scalar leptoquarks to the anomalous magnetic moment of the muon. The coupling ${\ensuremath{\lambda}}_{\mathrm{\ensuremath{\Phi}}\mathit{L}}$ between the leptoquarks, the quarks, and the leptons is taken to be of the order of the electroweak coupling ${\mathit{g}}_{2}$. In the near future, the E-821 Collaboration at Brookhaven will reduce the experimental error on this parameter to \ensuremath{\Delta}${\mathit{a}}_{\mathrm{\ensuremath{\mu}}}^{\mathrm{expt}}$4\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}10}$, an improvement of 20 over its current value. Combining this error with the current uncertainty on the hadronic contribution to g-2 we obtain a bound of ${\mathit{m}}_{\mathrm{\ensuremath{\Phi}}\mathit{L}}$>88 GeV for the second generation scalar leptoquark while we get ${\mathit{m}}_{\mathrm{\ensuremath{\Phi}}\mathit{L}}$>186 GeV when neglecting the hadronic uncertainty. \textcopyright{} 1995 The American Physical Society.