Progress towards an array-wide diffuse UHE neutrino search with the Askaryan Radio Array

The Askaryan Radio Array (ARA) is an in-ice ultrahigh energy (UHE) neutrino experiment at the South Pole. ARA aims to detect the radio emissions from neutrino-induced particle showers using in-ice clusters of antennas buried ${\sim}200$ m deep on a roughly cubical lattice with side length of ${\sim}10$ m. ARA has five such independent stations which have collectively accumulated ${\sim}30$ station-years of livetime through 2023. The fifth station of ARA has an additional sub-detector, known as the phased array, which pioneered an interferometric trigger constructed by beamforming the signals of $7$ tightly packed, vertically-polarized antennas. This scheme has been demonstrated to significantly improve the trigger efficiency for low SNR signals. In this talk, we will present the current state of the first array-wide diffuse neutrino search using $24$ station-years of data (through 2021). We anticipate that this analysis will result in the first UHE neutrino observation or world-leading limits from a radio neutrino detector below $100$ EeV. Additionally, this analysis will demonstrate the feasibility for multi-station in-ice radio arrays to successfully conduct an array-wide neutrino search --- paving the way for future, large detector arrays such as RNO-G and IceCube-Gen2 Radio.

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Publication Details

Published
2024-11-07
DOI
https://doi.org/10.22323/1.470.0007
Citations
2
Primary Topic
Astrophysics and Cosmic Phenomena
Type
article
Field-Weighted Citation Impact
1.32
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Progress towards an array-wide diffuse UHE neutrino search with the Askaryan Radio Array

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Progress towards an array-wide diffuse UHE neutrino search with the Askaryan Radio Array

M.A. DuVernois, A. Novikov, K. D. de Vries, S.-H. Wang, J. Hanson, K. Hughes, P. Allison, N. Harty, R. J. Nichol, Uzair Abdul Latif, R. Debolt, T.C. Liu, A. C. Cummings, W. Luszczak, M. Kim, L. Cremonesi, D. Besson, S. Toscano, Shi Su, Simon De Kockere, Cosmin Deaconu, K. Couberly, P. Chen, A. G. Vieregg, Eric Oberla, A. Ishihara, M.-Z. Wang, Brian Clark, Chao Xie, A. Nozdrina, C.H. Liu, Yee‐Chun Chen, Edward Friedman, K.-C. Kim, A. Karle, K. Kurusu, Marco Stein Muzio, Stephanie Wissel, D. Seckel, M. Huang, J. J. Beatty, K. Mase, Y.C. Chen, N. Punsuebsay, Ilya Kravchenko, J. W. Nam, J. Touart, Mohammad Ful Hossain Seikh, Paritosh Giri, J. L. Kelley, A. Salcedo-Gomez, J. Torres, P. Dasgupta, R. Young, J. D. Roth, G.S. Varner, A. Bishop, S. Ali, K. D. Hoffman, R. Gaïor, C. Pfendner, S. Yoshida, Y.-S. Shiao, C.Y. Kuo, S. Archambault, J. Flaherty, Ryan Krebs, A. Connolly, N. van Eijndhoven, Y. Pan
article en
2 citations

Abstract

The Askaryan Radio Array (ARA) is an in-ice ultrahigh energy (UHE) neutrino experiment at the South Pole. ARA aims to detect the radio emissions from neutrino-induced particle showers using in-ice clusters of antennas buried ${\sim}200$ m deep on a roughly cubical lattice with side length of ${\sim}10$ m. ARA has five such independent stations which have collectively accumulated ${\sim}30$ station-years of livetime through 2023. The fifth station of ARA has an additional sub-detector, known as the phased array, which pioneered an interferometric trigger constructed by beamforming the signals of $7$ tightly packed, vertically-polarized antennas. This scheme has been demonstrated to significantly improve the trigger efficiency for low SNR signals. In this talk, we will present the current state of the first array-wide diffuse neutrino search using $24$ station-years of data (through 2021). We anticipate that this analysis will result in the first UHE neutrino observation or world-leading limits from a radio neutrino detector below $100$ EeV. Additionally, this analysis will demonstrate the feasibility for multi-station in-ice radio arrays to successfully conduct an array-wide neutrino search --- paving the way for future, large detector arrays such as RNO-G and IceCube-Gen2 Radio.

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