Expression of Interest for a Novel Search for CP Violation in the Neutrino Sector: DAEdALUS

TL;DR

DAEdALUS proposes a novel, cost-effective approach using decay-at-rest neutrino sources and large water Cherenkov detectors to improve CP violation searches in the neutrino sector, complementing existing long-baseline experiments.

Contribution

It introduces a new experimental setup utilizing decay-at-rest neutrino sources with high-power accelerators and large detectors, enhancing CP violation sensitivity beyond current proposals.

Findings

Provides a high-statistics, low-background alternative for CP violation searches.

When combined with LBNE data, improves sensitivity beyond existing proposals.

Opens new opportunities for physics at DUSEL and future experiments.

Abstract

DAEdALUS, a Decay-At-rest Experiment for delta_CP studies At the Laboratory for Underground Science, provides a new approach to the search for CP violation in the neutrino sector. The design utilizes low-cost, high-power proton accelerators under development for commercial uses. These provide neutrino beams with energy up to 52 MeV from pion and muon decay-at-rest. The experiment searches for aninu_mu to antinu_e at short baselines corresponding to the atmospheric Delta m^2 region. The antinu_e will be detected, via inverse beta decay, in the 300 kton fiducial-volume Gd-doped water Cherenkov neutrino detector proposed for the Deep Underground Science and Engineering Laboratory (DUSEL). DAEdALUS opens new opportunities for DUSEL. It provides a high-statistics, low-background alternative for CP violation searches which matches the capability of the conventional long-baseline neutrino experiment, LBNE. Because of the complementary designs, when DAEdALUS antineutrino data are combined with LBNE neutrino data, the sensitivity of the CP-violation search improves beyond any present proposals, including the proposal for Project X. Also, the availability of an on-site neutrino beam opens opportunities for additional physics, both for the presently planned DUSEL detectors and for new experiments at a future 300 ft campus.