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Letter of Interest for a Neutrino Beam from Protvino to KM3NeT/ORCA

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arxiv 1902.06083 v3 pith:7HOXC3HP submitted 2019-02-16 physics.ins-det hep-ex

Letter of Interest for a Neutrino Beam from Protvino to KM3NeT/ORCA

classification physics.ins-det hep-ex
keywords beamneutrinodetectorexperimentorcaprotvinosensitivityaccelerator
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The Protvino accelerator facility located in the Moscow region, Russia, is in a good position to offer a rich experimental research program in the field of neutrino physics. Of particular interest is the possibility to direct a neutrino beam from Protvino towards the KM3NeT/ORCA detector, which is currently under construction in the Mediterranean Sea 40 km offshore Toulon, France. This proposal is known as P2O. Thanks to its baseline of 2595 km, this experiment would yield an unparalleled sensitivity to matter effects in the Earth, allowing for the determination of the neutrino mass ordering with a high level of certainty after only a few years of running at a modest beam intensity of $\approx$ 90 kW. With a prolonged exposure ($\approx$ 1500 kW*yr), a 2$\sigma$ sensitivity to the leptonic CP-violating Dirac phase can be achieved. A second stage of the experiment, comprising a further intensity upgrade of the accelerator complex and a densified version of the ORCA detector (Super-ORCA), would allow for up to a 6$\sigma$ sensitivity to CP violation and a 10$^\circ$-17$^\circ$ resolution on the CP phase after 10 years of running with a 450 kW beam, competitive with other planned experiments. The initial composition and energy spectrum of the neutrino beam would need to be monitored by a near detector, to be constructed several hundred meters downstream from the proton beam target. The same neutrino beam and near detector set-up would also allow for neutrino-nucleus cross section measurements to be performed. A short-baseline sterile neutrino search experiment would also be possible.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Impact of different neutrino decoherence formalisms at the future long-baseline Experiments

    hep-ph 2026-04 unverdicted novelty 5.0

    Two bases for the neutrino decoherence matrix yield identical vacuum probabilities at small Gamma but diverge at large Gamma or with strong matter effects, altering chi-squared sensitivities at DUNE and P2SO.

  2. Impact of different neutrino decoherence formalisms at the future long-baseline Experiments

    hep-ph 2026-04 reject novelty 5.0

    For small decoherence strengths the two prescriptions agree in vacuum, but in matter they give different probabilities and different DUNE/P2SO bounds and sensitivity projections.

  3. Probing non-unitarity of the PMNS matrix in P2SO and comparison with DUNE

    hep-ph 2026-03 conditional novelty 5.0

    Projected GLoBES sensitivities show DUNE constrains the non-unitarity parameters α11 and |α21| better, while P2SO wins on α33 (and marginally α22); non-unitarity also distorts mass-hierarchy, octant, and CP-violation ...

  4. CP violating signal at DUNE in presence of nonstandard interactions and the role of second oscillation maxima

    hep-ph 2026-01 conditional novelty 4.0

    DUNE's second oscillation maximum (low-energy 8 GeV beam) amplifies CP-violating asymmetry in nonstandard-interaction scenarios, improving intrinsic-CP extraction and raising projected discovery significance above 12σ...