10–13 Oct 2023
University of Tarapaca, Arica, Chile
America/Santiago timezone

Low Energy Excess Search and Constraints on eV-Scale Sterile Neutrino Oscillations at MicroBooNE

11 Oct 2023, 12:00
30m
Aula Magna, Campus Velasquez, Universidad de Tarapaca, Arica, Chile

Aula Magna, Campus Velasquez, Universidad de Tarapaca, Arica, Chile

Oral presentation High Energy Particle Physics Plenary Session

Speaker

Sergey Martynenko

Description

The MicroBooNE experiment employs an 85-ton active mass liquid argon time projection chamber to detect neutrinos from both the on-axis Booster Neutrino Beam (BNB) and off-axis Neutrinos at the Main Injector (NuMI) beam. One of the main goals of MicroBooNE is to investigate MiniBooNE low energy excess/anomaly. In this talk, we will present the recent results from MicroBooNE’s low energy excess (LEE) search based on a search of single photons in MicroBooNE and a series of three independent analyses targeting different final-state topologies which look for an anomalous excess of electron neutrino events. We will also discuss the interpretation of these results in the context of the 3+1 oscillation framework under a light sterile neutrino model, as well as ongoing efforts for other BSM explanations of the MiniBooNE anomaly. Additionally, we will examine the impact of a degeneracy resulting from the cancellation of $\nu_e$ appearance and disappearance, and demonstrate that combining data from the BNB and NuMI beams, which have substantially different $\nu_e/\nu_\mu$ ratios, can break this degeneracy.

Details

Sergey Martynenko , Research Associate at Brookhaven National Laboratory, USA
https://www.bnl.gov/science/

Is this abstract from experiment? Yes
Name of experiment and experimental site MicroBooNE
Is the speaker for that presentation defined? Yes
Internet talk No

Primary author

Sergey Martynenko

Co-authors

Hanyu Wei Jay Hyun Jo (Brookhaven National Laboratory)

Presentation materials