Observations of the Askaryan Effect in Ice

• Main Authors: ANITA Collaboration, Gorham, P. W., Barwick, S. W., Beatty, J. J., Besson, D. Z., Binns, W. R., Chen, C., Chen, P., Clem, J. M., Connolly, A., Dowkontt, P. F., DuVernois, M. A., Field, R. C., Goldstein, D., Goodhue, A., Hast, C., Hebert, C. L., Hoover, S., Israel, M. H., Kowalski, J., Learned, J. G., Liewer, K. M., Link, J. T., Lusczek, E., Matsuno, S., Mercurio, B., Miki, C., Miocinovic, P., Nam, J., Naudet, C. J., Ng, J., Nichol, R., Palladino, K., Reil, K., Romero-Wolf, A., Rosen, M., Saltzberg, D., Seckel, D., Varner, G. S., Walz, D., Wu, F.
• Format: Text
• Language: unknown
• Published: arXiv 2006
• Subjects: High Energy Physics - Experiment hep-ex; Astrophysics astro-ph; Instrumentation and Detectors physics.ins-det; FOS Physical sciences; Antarctic; The Antarctic; Antarc*
• Online Access: https://dx.doi.org/10.48550/arxiv.hep-ex/0611008; https://arxiv.org/abs/hep-ex/0611008

We report on the first observations of the Askaryan effect in ice: coherent impulsive radio Cherenkov radiation from the charge asymmetry in an electromagnetic (EM) shower. Such radiation has been observed in silica sand and rock salt, but this is the first direct observation from an EM shower in ice. These measurements are important since the majority of experiments to date that rely on the effect for ultra-high energy neutrino detection are being performed using ice as the target medium. As part of the complete validation process for the Antarctic Impulsive Transient Antenna (ANITA) experiment, we performed an experiment at the Stanford Linear Accelerator Center (SLAC) in June 2006 using a 7.5 metric ton ice target, yielding results fully consistent with theoretical expectations. : 4 pages, 5 figures, minor corrections