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Title: Observation of an Unusual Upward-Going Cosmic-Ray-like Event in the Third Flight of ANITA

Abstract

We report here on an upward traveling, radio-detected cosmic-ray-like impulsive event with characteristics closely matching an extensive air shower. This event, observed in the third flight of the Antarctic Impulsive Transient Antenna (ANITA), a NASA-sponsored long-duration balloon payload, is consistent with a similar event reported in a previous flight. These events could be produced by the atmospheric decay of an upward-propagating τ lepton produced by a ν τ interaction, although their relatively steep arrival angles create tension with the standard model neutrino cross section. Each of the two events have a posteriori background estimates of 10 - 2 events. If these are generated by τ -lepton decay, then either the charged-current ν τ cross section is suppressed at EeV energies, or the events arise at moments when the peak flux of a transient neutrino source was much larger than the typical expected cosmogenic background neutrinos.

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), High Energy Physics (HEP) (SC-25); National Aeronautic and Space Administration (NASA); National Science Foundation (NSF)
Contributing Org.:
ANITA Collaboration
OSTI Identifier:
1490161
Alternate Identifier(s):
OSTI ID: 1478597
Grant/Contract Number:  
AC02-76SF00515; 1255557
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 121; Journal Issue: 16; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; cosmic ray & astroparticle detectors; cosmic rays & astroparticles; extrasolar neutrino astronomy; particle astrophysics

Citation Formats

Gorham, P. W., Rotter, B., Allison, P., Banerjee, O., Batten, L., Beatty, J. J., Bechtol, K., Belov, K., Besson, D. Z., Binns, W. R., Bugaev, V., Cao, P., Chen, C. C., Chen, C. H., Chen, P., 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., Hughes, K., Huang, J. J., Hupe, R., Israel, M. H., Javaid, A., Lam, J., Liewer, K. M., Lin, S. Y., Liu, T. C., Ludwig, A., Macchiarulo, L., Matsuno, S., Miki, C., Mulrey, K., Nam, J., Naudet, C. J., Nichol, R. J., Novikov, A., Oberla, E., Olmedo, M., Prechelt, R., Prohira, S., Rauch, B. F., Roberts, J. M., Romero-Wolf, A., Russell, J. W., Saltzberg, D., Seckel, D., Schoorlemmer, H., Shiao, J., Stafford, S., Stockham, J., Stockham, M., Strutt, B., Varner, G. S., Vieregg, A. G., Wang, S. H., and Wissel, S. A.. Observation of an Unusual Upward-Going Cosmic-Ray-like Event in the Third Flight of ANITA. United States: N. p., 2018. Web. doi:10.1103/physrevlett.121.161102.
Gorham, P. W., Rotter, B., Allison, P., Banerjee, O., Batten, L., Beatty, J. J., Bechtol, K., Belov, K., Besson, D. Z., Binns, W. R., Bugaev, V., Cao, P., Chen, C. C., Chen, C. H., Chen, P., 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., Hughes, K., Huang, J. J., Hupe, R., Israel, M. H., Javaid, A., Lam, J., Liewer, K. M., Lin, S. Y., Liu, T. C., Ludwig, A., Macchiarulo, L., Matsuno, S., Miki, C., Mulrey, K., Nam, J., Naudet, C. J., Nichol, R. J., Novikov, A., Oberla, E., Olmedo, M., Prechelt, R., Prohira, S., Rauch, B. F., Roberts, J. M., Romero-Wolf, A., Russell, J. W., Saltzberg, D., Seckel, D., Schoorlemmer, H., Shiao, J., Stafford, S., Stockham, J., Stockham, M., Strutt, B., Varner, G. S., Vieregg, A. G., Wang, S. H., & Wissel, S. A.. Observation of an Unusual Upward-Going Cosmic-Ray-like Event in the Third Flight of ANITA. United States. doi:10.1103/physrevlett.121.161102.
Gorham, P. W., Rotter, B., Allison, P., Banerjee, O., Batten, L., Beatty, J. J., Bechtol, K., Belov, K., Besson, D. Z., Binns, W. R., Bugaev, V., Cao, P., Chen, C. C., Chen, C. H., Chen, P., 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., Hughes, K., Huang, J. J., Hupe, R., Israel, M. H., Javaid, A., Lam, J., Liewer, K. M., Lin, S. Y., Liu, T. C., Ludwig, A., Macchiarulo, L., Matsuno, S., Miki, C., Mulrey, K., Nam, J., Naudet, C. J., Nichol, R. J., Novikov, A., Oberla, E., Olmedo, M., Prechelt, R., Prohira, S., Rauch, B. F., Roberts, J. M., Romero-Wolf, A., Russell, J. W., Saltzberg, D., Seckel, D., Schoorlemmer, H., Shiao, J., Stafford, S., Stockham, J., Stockham, M., Strutt, B., Varner, G. S., Vieregg, A. G., Wang, S. H., and Wissel, S. A.. Thu . "Observation of an Unusual Upward-Going Cosmic-Ray-like Event in the Third Flight of ANITA". United States. doi:10.1103/physrevlett.121.161102.
@article{osti_1490161,
title = {Observation of an Unusual Upward-Going Cosmic-Ray-like Event in the Third Flight of ANITA},
author = {Gorham, P. W. and Rotter, B. and Allison, P. and Banerjee, O. and Batten, L. and Beatty, J. J. and Bechtol, K. and Belov, K. and Besson, D. Z. and Binns, W. R. and Bugaev, V. and Cao, P. and Chen, C. C. and Chen, C. H. and Chen, P. 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 Hughes, K. and Huang, J. J. and Hupe, R. and Israel, M. H. and Javaid, A. and Lam, J. and Liewer, K. M. and Lin, S. Y. and Liu, T. C. and Ludwig, A. and Macchiarulo, L. and Matsuno, S. and Miki, C. and Mulrey, K. and Nam, J. and Naudet, C. J. and Nichol, R. J. and Novikov, A. and Oberla, E. and Olmedo, M. and Prechelt, R. and Prohira, S. and Rauch, B. F. and Roberts, J. M. and Romero-Wolf, A. 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 Varner, G. S. and Vieregg, A. G. and Wang, S. H. and Wissel, S. A.},
abstractNote = {We report here on an upward traveling, radio-detected cosmic-ray-like impulsive event with characteristics closely matching an extensive air shower. This event, observed in the third flight of the Antarctic Impulsive Transient Antenna (ANITA), a NASA-sponsored long-duration balloon payload, is consistent with a similar event reported in a previous flight. These events could be produced by the atmospheric decay of an upward-propagating τ lepton produced by a ντ interaction, although their relatively steep arrival angles create tension with the standard model neutrino cross section. Each of the two events have a posteriori background estimates of ≲10-2 events. If these are generated by τ-lepton decay, then either the charged-current ντ cross section is suppressed at EeV energies, or the events arise at moments when the peak flux of a transient neutrino source was much larger than the typical expected cosmogenic background neutrinos.},
doi = {10.1103/physrevlett.121.161102},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 16,
volume = 121,
place = {United States},
year = {2018},
month = {10}
}

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