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Probing nonstandard interactions with reactor neutrinos

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arxiv 0810.5361 v2 pith:KF6E2I3P submitted 2008-10-30 hep-ph hep-ex

Probing nonstandard interactions with reactor neutrinos

classification hep-ph hep-ex
keywords neutrinoelectronanglechargeeffectiveenergyinteractionsmeasurement
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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New limits on the weak mixing angle and on the electron neutrino effective charge radius in the low energy regime, below 100 MeV, are obtained from a combined fit of all electron-(anti)neutrino electron elastic scattering measurements. We have included the recent TEXONO measurement with a CsI (Tl) detector. Only statistical error of this measurement has been taken into account. Weak mixing angle is found to be sin^2 theta_W = 0.255 +0.022 -0.023. The electron neutrino effective charge radius squared is bounded to be r^2 = (0.9 +0.9 -1.0) x 10^{-32} cm^2. The sensitivity of future low energy neutrino experiments to nonstandard interactions of neutrinos with quarks is also discussed.

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