### Sensitivity to new physics: a_e vs. a_muSensitivity to new physics: a_e vs. a_mu

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 Author Chizhov, Mihail V. Source arXiv.org Content type Text File Format PDF Date of Submission 2008-05-28 Language English
 Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics Subject Keyword High Energy Physics - Phenomenology ♦ High Energy Physics - Experiment ♦ physics:hep-ex ♦ physics:hep-ph Abstract At present it is generally believed that new physics'' effects contribute to leptonic anomalous magnetic moment, a_l, via quantum loops only and they are proportional to the squared lepton mass, (m_l)^2. An alternative mechanism for a contribution by new physics is proposed. It occurs at the tree level and exhibits a linear rather than quadratic dependence on m_l. This leads to a much larger sensitivity of a_e to the new physics than was expected so far. Educational Use Research Learning Resource Type Article Page Count 4