Charge Radius and Effective Couplings via the v<sub>μ</sub>e<sup>-</sup>→ v<sub>μ</sub>e<sup>-</sup>

Abstract

<p> <br /> </p> <p> <br /> </p> <p> <span><span> </span></span> </p> <p> <a name="OLE_LINK18"></a><a name="OLE_LINK17"></a><a name="OLE_LINK16"></a><span><span><span>In this work the neutral-current scattering cross-section for neutrinos on electrons is calculated assuming that a massive Dirac neutrino is characterized by a phenomenological parameters, a charge radius < r</span></span></span><span><span><span><span><r<sup><sup>2</sup>></r<sup></span><span> and the right-handed currents are present in the framework of a Left-Right symmetric model (<i>LR</i>). Using the CHARM II result for the charge radius of the muon-neutrino</span></span></span></span><span><span><span><span> |< r<r<sup><sup>2</sup>>|</r<sup></span></span></span></span><span><span><span><span style="font-family:宋体;">＜</span></span></span></span><span><span><span><span>6.0</span></span></span></span><span><span><span><span style="font-family:宋体;">×</span></span></span></span><span><span><span><span>10<sup>-33</sup>cm<sup>2</sup></span><span>, we place a bound on </span></span></span></span><span><span><span><span>-7.9</span></span></span></span><span><span><span><span style="font-family:宋体;">×</span></span></span></span><span><span><span><span>10<sup>-33</sup>cm<sup>2</sup></span></span></span></span><span><span><span><span style="font-family:宋体;">≤< r</span></span></span></span><span><span><span><span><r<sup><sup>2</sup>><sub>LR</sub></r<sup></span></span></span></span><span><span><span><span style="font-family:宋体;">≤</span></span></span></span><span><span><span><span>7.9</span></span></span></span><span><span><span><span style="font-family:宋体;">×</span></span></span></span><span><span><span><span>10<sup>-33</sup>cm<sup>2</sup></span><span>. We discuss the relationship between the electron neutral couplings </span></span></span></span><span><span><span><span>g<sup>Ve</sup><sub>V </sub></span><span>...