Neutrino phenomenology and unparticle physics

TL;DR

This paper explores how neutrino experiments can constrain unparticle physics parameters, showing current data can set stronger bounds and future experiments could improve sensitivity to unparticle interactions.

Contribution

It demonstrates the use of neutrino data to constrain unparticle physics, especially highlighting the potential of future experiments to improve bounds on unparticle parameters.

Findings

Neutrino data, especially from MUNU, can set stronger bounds on unparticle scale dimension d > 1.5.

Future neutrino experiments, including coherent neutrino-nuclei scattering, can enhance sensitivity to unparticle couplings.

Current astrophysical limits are compared with experimental bounds, showing competitive constraints.

Abstract

We show how neutrino data can be used in order to constrain the free parameters of possible extensions to the standard model of elementary particles (SM). For definiteness, we focus in the recently proposed unparticle scenario. We show that neutrino data, in particular the MUNU experiment, can set stronger bounds than previous reported limits in the scale dimension parameter for certain region (d > 1.5). We compute the sensitivity of future neutrino experiments to unparticle physics such as future neutrino-electron scattering detectors, coherent neutrino-nuclei scattering as well as the ILC . In particular, we show that the measurement of coherent reactor neutrino scattering off nuclei provide a good sensitivity to the couplings of unparticle interaction with neutrinos and quarks.Finally our results are compared with the current astrophysical limits.