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Title: Analysis of a tau neutrino origin for the near-horizon air shower events observed by the fourth flight of the Antarctic Impulsive Transient Antenna

Abstract

In this work, we study in detail the sensitivity of the Antarctic Impulsive Transient Antenna (ANITA) to possible ντ point source fluxes detected via τ-lepton-induced air showers. This investigation is framed around the observation of four upward-going extensive air shower events very close to the horizon seen in ANITA-IV. We find that these four upgoing events are not observationally inconsistent with τ-induced EASs from Earth-skimming ντ both in their spectral properties as well as in their observed locations on the sky. These four events as well as the overall diffuse and point source exposure to Earth-skimming ντ are also compared against published ultrahigh-energy neutrino limits from the Pierre Auger Observatory. While none of these four events occurred at sky locations simultaneously visible by Auger, the implied fluence necessary for ANITA to observe these events is in strong tension with limits set by Auger across a wide range of energies and is additionally in tension with ANITA’s Askaryan in-ice neutrino channel above 1019 eV. We conclude by discussing some of the technical challenges with simulating and analyzing these near horizon events and the potential for future observatories to observe similar events.

Authors:
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Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Contributing Org.:
ANITA Collaboration
OSTI Identifier:
1856236
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D.
Additional Journal Information:
Journal Volume: 105; Journal Issue: 4; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; particle astrophysics; cosmic ray & astroparticle detectors; neutrino detectors

Citation Formats

Prechelt, R., Wissel, S.  A., Romero-Wolf, A., Burch, C., Gorham, P.  W., Allison, P., Alvarez-Muñiz, J., Banerjee, O., Batten, L., Beatty, J.  J., Belov, K., Besson, D.  Z., Binns, W.  R., Bugaev, V., Cao, P., Carvalho, W., Chen, C.  H., Chen, P., Chen, Y., Clem, J.  M., Connolly, A., Cremonesi, L., Dailey, B., Deaconu, C., Dowkontt, P.  F., Fox, B.  D., Gordon, J.  W. H., Hast, C., Hill, B., Hsu, S.  Y., Huang, J.  J., Hughes, K., Hupe, R., Israel, M.  H., Liewer, K.  M., Liu, T.  C., Ludwig, A.  B., Macchiarulo, L., Matsuno, S., McBride, K., Miki, C., Mulrey, K., Nam, J., Naudet, C., Nichol, R.  J., Novikov, A., Oberla, E., Prohira, S., Rauch, B.  F., Ripa, J., Roberts, J.  M., Rotter, B., Russell, J.  W., Saltzberg, D., Seckel, D., Schoorlemmer, H., Shiao, J., Stafford, S., Stockham, J., Stockham, M., Strutt, B., Sutherland, M.  S., Varner, G.  S., Vieregg, A.  G., Wang, N., Wang, S.  H., Zas, E., and Zeolla, A. Analysis of a tau neutrino origin for the near-horizon air shower events observed by the fourth flight of the Antarctic Impulsive Transient Antenna. United States: N. p., 2022. Web. doi:10.1103/physrevd.105.042001.
Prechelt, R., Wissel, S.  A., Romero-Wolf, A., Burch, C., Gorham, P.  W., Allison, P., Alvarez-Muñiz, J., Banerjee, O., Batten, L., Beatty, J.  J., Belov, K., Besson, D.  Z., Binns, W.  R., Bugaev, V., Cao, P., Carvalho, W., Chen, C.  H., Chen, P., Chen, Y., Clem, J.  M., Connolly, A., Cremonesi, L., Dailey, B., Deaconu, C., Dowkontt, P.  F., Fox, B.  D., Gordon, J.  W. H., Hast, C., Hill, B., Hsu, S.  Y., Huang, J.  J., Hughes, K., Hupe, R., Israel, M.  H., Liewer, K.  M., Liu, T.  C., Ludwig, A.  B., Macchiarulo, L., Matsuno, S., McBride, K., Miki, C., Mulrey, K., Nam, J., Naudet, C., Nichol, R.  J., Novikov, A., Oberla, E., Prohira, S., Rauch, B.  F., Ripa, J., Roberts, J.  M., Rotter, B., Russell, J.  W., Saltzberg, D., Seckel, D., Schoorlemmer, H., Shiao, J., Stafford, S., Stockham, J., Stockham, M., Strutt, B., Sutherland, M.  S., Varner, G.  S., Vieregg, A.  G., Wang, N., Wang, S.  H., Zas, E., & Zeolla, A. Analysis of a tau neutrino origin for the near-horizon air shower events observed by the fourth flight of the Antarctic Impulsive Transient Antenna. United States. https://doi.org/10.1103/physrevd.105.042001
Prechelt, R., Wissel, S.  A., Romero-Wolf, A., Burch, C., Gorham, P.  W., Allison, P., Alvarez-Muñiz, J., Banerjee, O., Batten, L., Beatty, J.  J., Belov, K., Besson, D.  Z., Binns, W.  R., Bugaev, V., Cao, P., Carvalho, W., Chen, C.  H., Chen, P., Chen, Y., Clem, J.  M., Connolly, A., Cremonesi, L., Dailey, B., Deaconu, C., Dowkontt, P.  F., Fox, B.  D., Gordon, J.  W. H., Hast, C., Hill, B., Hsu, S.  Y., Huang, J.  J., Hughes, K., Hupe, R., Israel, M.  H., Liewer, K.  M., Liu, T.  C., Ludwig, A.  B., Macchiarulo, L., Matsuno, S., McBride, K., Miki, C., Mulrey, K., Nam, J., Naudet, C., Nichol, R.  J., Novikov, A., Oberla, E., Prohira, S., Rauch, B.  F., Ripa, J., Roberts, J.  M., Rotter, B., Russell, J.  W., Saltzberg, D., Seckel, D., Schoorlemmer, H., Shiao, J., Stafford, S., Stockham, J., Stockham, M., Strutt, B., Sutherland, M.  S., Varner, G.  S., Vieregg, A.  G., Wang, N., Wang, S.  H., Zas, E., and Zeolla, A. Mon . "Analysis of a tau neutrino origin for the near-horizon air shower events observed by the fourth flight of the Antarctic Impulsive Transient Antenna". United States. https://doi.org/10.1103/physrevd.105.042001. https://www.osti.gov/servlets/purl/1856236.
@article{osti_1856236,
title = {Analysis of a tau neutrino origin for the near-horizon air shower events observed by the fourth flight of the Antarctic Impulsive Transient Antenna},
author = {Prechelt, R. and Wissel, S.  A. and Romero-Wolf, A. and Burch, C. and Gorham, P.  W. and Allison, P. and Alvarez-Muñiz, J. and Banerjee, O. and Batten, L. and Beatty, J.  J. and Belov, K. and Besson, D.  Z. and Binns, W.  R. and Bugaev, V. and Cao, P. and Carvalho, W. and Chen, C.  H. and Chen, P. and Chen, Y. and Clem, J.  M. and Connolly, A. and Cremonesi, L. and Dailey, B. and Deaconu, C. and Dowkontt, P.  F. and Fox, B.  D. and Gordon, J.  W. H. and Hast, C. and Hill, B. and Hsu, S.  Y. and Huang, J.  J. and Hughes, K. and Hupe, R. and Israel, M.  H. and Liewer, K.  M. and Liu, T.  C. and Ludwig, A.  B. and Macchiarulo, L. and Matsuno, S. and McBride, K. and Miki, C. and Mulrey, K. and Nam, J. and Naudet, C. and Nichol, R.  J. and Novikov, A. and Oberla, E. and Prohira, S. and Rauch, B.  F. and Ripa, J. and Roberts, J.  M. and Rotter, B. and Russell, J.  W. and Saltzberg, D. and Seckel, D. and Schoorlemmer, H. and Shiao, J. and Stafford, S. and Stockham, J. and Stockham, M. and Strutt, B. and Sutherland, M.  S. and Varner, G.  S. and Vieregg, A.  G. and Wang, N. and Wang, S.  H. and Zas, E. and Zeolla, A.},
abstractNote = {In this work, we study in detail the sensitivity of the Antarctic Impulsive Transient Antenna (ANITA) to possible ντ point source fluxes detected via τ-lepton-induced air showers. This investigation is framed around the observation of four upward-going extensive air shower events very close to the horizon seen in ANITA-IV. We find that these four upgoing events are not observationally inconsistent with τ-induced EASs from Earth-skimming ντ both in their spectral properties as well as in their observed locations on the sky. These four events as well as the overall diffuse and point source exposure to Earth-skimming ντ are also compared against published ultrahigh-energy neutrino limits from the Pierre Auger Observatory. While none of these four events occurred at sky locations simultaneously visible by Auger, the implied fluence necessary for ANITA to observe these events is in strong tension with limits set by Auger across a wide range of energies and is additionally in tension with ANITA’s Askaryan in-ice neutrino channel above 1019 eV. We conclude by discussing some of the technical challenges with simulating and analyzing these near horizon events and the potential for future observatories to observe similar events.},
doi = {10.1103/physrevd.105.042001},
journal = {Physical Review. D.},
number = 4,
volume = 105,
place = {United States},
year = {Mon Feb 07 00:00:00 EST 2022},
month = {Mon Feb 07 00:00:00 EST 2022}
}

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