Improved modeling of in-ice particle showers for IceCube event reconstruction - INSPIRE

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Improved modeling of in-ice particle showers for IceCube event reconstruction

IceCube

Collaboration

Mar 4, 2024

28 pages

Published in:

JINST 19 (2024) 06, P06026,
JINST 19 P06026

Published: Jun 19, 2024

e-Print:

2403.02470 [astro-ph.HE]

DOI:

10.1088/1748-0221/19/06/P06026

Experiments:

ICECUBE

View in:

ADS Abstract Service

reference search3 citations

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Abstract: (IOP)

The IceCube Neutrino Observatory relies on an array ofphotomultiplier tubes to detect Cherenkov light produced by chargedparticles in the South Pole ice. IceCube data analyses depend on anin-depth characterization of the glacial ice, and on novelapproaches in event reconstruction that utilize fast approximationsof photoelectron yields. Here, a more accurate model is derived forevent reconstruction that better captures our current knowledge ofice optical properties. When evaluated on a Monte Carlo simulationset, the median angular resolution for in-ice particle showersimproves by over a factor of three compared to a reconstructionbased on a simplified model of the ice. The most substantialimprovement is obtained when including effects of birefringence dueto the polycrystalline structure of the ice. When evaluated on dataclassified as particle showers in the high-energy starting eventssample, a significantly improved description of the events isobserved.

Note:

28 pages, 18 figures, 1 table, submitted to JINST, updated to account for comments received

Cherenkov detectors
Neutrino detectors
Simulation methods and programs
radiation: Cherenkov
photoelectron: yield
numerical calculations: Monte Carlo
ice
neutrino: VHE
showers
IceCube

References(40)

Figures(35)

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