Precision measurements and tau neutrino physics in a future accelerator neutrino experiment

Abstract

Abstract We investigate prospects of building a future accelerator-based neutrino oscillation experiment in China, including site selection, beam optimization and tau neutrino physics aspects. CP violation, non-unitary mixing and non-standard neutrino interactions are discussed. We simulate neutrino beam setups based on muon and beta decay techniques and compare Chinese laboratory sites by their expected sensitivities. A case study on the Super Proton–Proton Collider and the China JinPing Laboratory is also presented. It is shown that the muon-decay-based beam setup can measure the Dirac CP phase by about 14.2° precision at 1 σ CL, whereas non-unitarity can be probed down to ∣ α ij ∣ ≲ 0.37 ( i ≠ j = 1, 2, 3) and non-standard interactions to <?CDATA $| {\epsilon }_{{\ell }{\ell }^{\prime} }^{m}| \lesssim $?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mo stretchy="false">∣</mml:mo> <mml:msubsup> <mml:mrow> <mml:mi>ϵ</mml:mi> </mml:mrow> <mml:mrow> <mml:mi mathvariant="italic">ℓ</mml:mi> <mml:mi mathvariant="italic">ℓ</mml:mi> <mml:mo accent="false">′</mml:mo> </mml:mrow> <mml:mrow> <mml:mi>m</mml:mi> </mml:mrow> </mml:msubsup> <mml:mo stretchy="false">∣</mml:mo> <mml:mo>≲</mml:mo> </mml:math> 0.11 ( <?CDATA ${\ell }\ne {\ell }^{\prime} =e$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi mathvariant="italic">ℓ</mml:mi> <mml:mo>≠</mml:mo> <mml:mi mathvariant="italic">ℓ</mml:mi> <mml:mo accent="false">′</mml:mo> <mml:mo>=</mml:mo> <mml:mi>e</mml:mi> </mml:math> , μ , τ ) at 90% CL, respectively.

Locations

• Communications in Theoretical Physics - View
• arXiv (Cornell University) - View - PDF
• DataCite API - View