Title
Progress in the search for dark matter using upward-going muons in NOvA
Date Issued
01 January 2016
Access level
metadata only access
Resource Type
conference paper
Author(s)
Tsaris A.
Ding P.
Norman A.
Group C.
Kurbanov S.
Mina R.
Oksuzian Y.
Principato C.
Fermi National Accelerator Laboratory
Publisher(s)
Proceedings of Science (PoS)
Abstract
The NOvA collaboration has constructed a 14,000 ton, fine-grained, low-Z, total absorption tracking calorimeter at an off-axis angle to an upgraded NuMI neutrino beam. This detector, with its excellent granularity, energy resolution and relatively low-energy neutrino thresholds, was designed to measure ?μ → ?e neutrino appearance. These characteristics combined with the detector's timing resolution, continuous readout structure, and placement on the surface of the Earth make it ideal for use as a neutrino telescope. In order to operate in this telescope mode, NOvA experiment has developed a highly efficient upward-going muon trigger which is able to achieve a background suppression rate of 104 within the experiment's DAQ systems which is then increased by an additional factor of 106 in the offline to fully suppress the flux of downward going cosmics rays. The trigger efficiencies and rejection capabilities allow NOvA to be competitive in indirect dark matter searches for low-mass WIMPs. We present initial progress and results for an upward going muon analysis using data-driven background estimations that include signal and sideband region validation, as well as timing based directional track reconstruction. In addition we present results from the analysis of muon depletion corresponding to the celestial position of the moon, as a technique to determine an upper limits on the pointing resolution of the NOvA detector.
Volume
Part F128556
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-85025813441
Conference
Proceedings of Science
Sources of information:
Directorio de Producción Científica
Scopus