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arXiv · 1210.4225

Neutrinos from Pion Decay at Rest to Probe the Proton Strangeness in an Underground Lab

Giulia Pagliaroli·Carolina Lujan-Peschard·Manimala Mitra·Francesco Vissani
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Abstract

The study of the neutral current elastic scattering of neutrinos on protons at lower energies can be used as a compelling probe to improve our knowledge of the strangeness of the proton. We consider a neutrino beam generated from pion decay at rest, as provided by a cyclotron or a spallation neutron source and a 1 kton scintillating detector with a potential similar to the Borexino detector. Despite several backgrounds from solar and radioactive sources it is possible to estimate two optimal energy windows for the analysis, one between 0.65-1.1 MeV and another between 1.73-2.2 MeV. The expected number of neutral current events in these two regions, for an exposure of 1 year, is enough to obtain an error on the strange axial-charge 10 times smaller than available at present.

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Giulia Pagliaroli, Carolina Lujan-Peschard, Manimala Mitra, Francesco Vissani. 2013-06-12. Neutrinos from Pion Decay at Rest to Probe the Proton Strangeness in an Underground Lab. https://arxiv.org/abs/1210.4225

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