8-13 August 2011
Rhode Island Convention Center
US/Eastern timezone

Constraints on non-standard neutrino-matter interactions from MINOS

9 Aug 2011, 16:00
20m
550 (Rhode Island Convention Center)

550

Rhode Island Convention Center

Parallel contribution Neutrino Physics Neutrino Physics

Speaker

Zeynep Isvan (University of Pittsburgh)

Description

MINOS searches for neutrino oscillations using the disappearance of muon neutrinos between two detectors, over a baseline of 735 km. We recently reported the most precise measurement of neutrino oscillations in the atmospheric sector and the first tagged measurement of antineutrino oscillations. The neutrino mass splitting and mixing angle are measured to be $|\Delta m^{2}| = 2.32_{-0.08}^{+0.12} \times 10^{-3}\,eV^{2}$ and $\sin^{2}2\theta > 0.90$ (90\% C.L.) for an exposure of $7.25 \times 10^{20}$ protons-on-target (PoT). Antineutrino oscillation parameters are measured as $\Delta \overline{m}^{2}=(3.36^{+0.46}_{-0.40}\textrm{(stat.)}\pm0.06\textrm{(syst.)})\times 10^{-3}\,eV^{2}$ and $\sin^{2}(2\overline{\theta})=0.86^{+0.11}_{-0.12}\textrm{(stat.)}\pm0.01\textrm{(syst.)}$ with an exposure of $1.7 \times 10^{20}$ PoT in NuMI antineutrino running mode. We use the apparent difference in neutrino and antineutrino oscillation parameters to constrain non-standard matter interactions which could occur during propagation through the Earth's crust to the far detector.

Primary author

Zeynep Isvan (University of Pittsburgh)

Presentation Materials