Results from a low-threshold ultrahigh-energy neutrino search with the Askaryan Radio Array

Hughes, Kaeli; Allison, Patrick; Archambault, S.; Beatty, James; Besson, David Zeke; Bishop, Abigail; Chen, C.C.; Chen, C.H.; Chen, P.; Chen, Y.C.; Clark, Brian; Clay, W.; Connolly, Amy; Cremonesi, Linda; Dasgupta, Paramita; Davies, J.; de Cocker, Simon; de Vries, Krijn; Deaconu, Cosmin; DuVernois, Michael; Flaherty, Justin; Friedman, Elizabeth; Gaior, R.; Hanson, Jordan; Harty, N.; Hendricks, Bryan L.; Hoffman, Kara; Hong, Eugene; Hsu, S.Y.; Hu, L.; Huang, J.J.; Huang, M.-H. A.; Ishihara, A.; Karle, Albrecht; Kelley, John; Kim, K.-C.; Kim, M.-C.; Kravchenko, I.; Krebs, Ryan; Ku, Yuchieh; Kuo, C.Y.; Kurusu, K.; Landsman, H.; Latif, Uzair Abdul; Li, C.-J.; Liu, T.-C.; Lu, M.-Y.; Madison, B.; Madison, K.; Mase, K.; Meures, Thomas; Nam, J.; Nichol, Ryan James; Nir, G.; Novikov, A.; Nozdrina, Alisa; Oberla, Eric; Osborn, J.; Pan, Yue; Pfendner, Carl G; Punsuebsay, N.; Roth, J.; Seckel, David; Shiao, Y.-S.; Shultz, A.; Smith, Daniel; Toscano, Simona; Torres, Jorge; Touart, J.; van Eijndhoven, Nick; Varner, Gary; Vieregg, Abigail G.; Wang, M.-Z.; Wang, S.-H.; Want, Y.H.; Wissel, Stephanie; Xie, C.; Yoshida, S.; Young, R.; Seikh, M. F. H.; on behalf of the ARA Collaboration,

doi:10.22323/1.424.0002

Volume 424 - 9th International Workshop on Acoustic and Radio EeV Neutrino Detection Activities (ARENA2022) - Dense-media radio experiments

Results from a low-threshold ultrahigh-energy neutrino search with the Askaryan Radio Array

K. Hughes*, P. Allison, S. Archambault, J. Beatty, D.Z. Besson, A. Bishop, C.C. Chen, C.H. Chen, P. Chen, Y.C. Chen, B. Clark, W. Clay, A. Connolly, L. Cremonesi, P. Dasgupta, J. Davies, S. de Cocker, K. de Vries, C. Deaconu, M. DuVernois, J. Flaherty, E. Friedman, R. Gaior, J. Hanson, N. Harty, B.L. Hendricks, K. Hoffman, E. Hong, S.Y. Hsu, L. Hu, J.J. Huang, M.H.A. Huang, A. Ishihara, A. Karle, J. Kelley, K.C. Kim, M.C. Kim, I. Kravchenko, R. Krebs, Y. Ku, C.Y. Kuo, K. Kurusu, H. Landsman, U.A. Latif, C.J. Li, T.C. Liu, M.Y. Lu, B. Madison, K. Madison, K. Mase, T. Meures, J. Nam, R.J. Nichol, G. Nir, A. Novikov, A. Nozdrina, E. Oberla, J. Osborn, Y. Pan, C.G. Pfendner, N. Punsuebsay, J. Roth, D. Seckel, Y.S. Shiao, A. Shultz, D. Smith, S. Toscano, J. Torres, J. Touart, N. van Eijndhoven, G. Varner, A.G. Vieregg, M.Z. Wang, S.H. Wang, Y.H. Want, S. Wissel, C. Xie, S. Yoshida, R. Young, M.F.H. Seikh on behalf of the ARA Collaborationet al. (click to show)

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Pre-published on: August 04, 2023

Published on: October 25, 2023

Abstract

The Askaryan Radio Array (ARA) is an in-ice radio detector at the South Pole that targets radio emission from neutrino-induced particle cascades. Designed to detect neutrinos above 10 PeV, ARA has been taking data for over ten years and includes five independent stations. The newest ARA station is equipped with a phased array trigger, which lowers the trigger threshold compared to previous ARA stations and thus increases the neutrino sensitivity. In this contribution, we discuss the newest ARA analysis results from this phased array trigger and show a corresponding improvement in analysis efficiency, rejecting thermal backgrounds and providing vertex direction in the deep ice. We will also discuss the implications of this analysis for future radio-detection experiments.

DOI: https://doi.org/10.22323/1.424.0002

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