Search for electromagnetic properties of the neutrino in $\gamma e$ and $\gamma \gamma$ collisions at CLIC

Abstract

We have examined nonstandard $\gamma \nu \bar{\nu }$ and $\gamma \gamma \nu \bar{\nu }$ couplings via $\nu \bar{\nu }$ production in a $e\gamma$ and $\gamma \gamma$ collisions at the CLIC. We obtain 95% confidence level bounds on $\gamma \nu \bar{\nu }$ and $\gamma \gamma \nu \bar{\nu }$ couplings by considering the backscattered photon distribution function for incoming photons and Initial State Radiation (ISR) and Beamstrahlung (BS) effect for initial state electrons in the $e\gamma$ and $\gamma \gamma$ collider modes of linear collider. We indicate that the reaction $\gamma \gamma \to \nu \bar{\nu }$ provides more than 15 orders of magnitude improvement in neutrino-two photon couplings compared to LEP limits.

14 pages, 11 figures, to appear in Phys. Rev. D

References in corpus (2)

• Search of Neutrino Magnetic Moments with a High-Purity Germanium Detector at the Kuo-Sheng Nuclear Power Station
• Search for electromagnetic properties of the neutrinos at the LHC