nLab ANITA experiment

Idea

An experiment studying neutrino physics:

The Antarctic Impulsive Transient Antenna (ANITA) experiment has been designed to study ultra-high-energy (UHE) cosmic neutrinos by detecting the radio pulses emitted by their interactions with the Antarctic ice sheet.

In 2018 the experiment saw some events that were interpreted as signaling New Physics beyond the standard model of particle physics (Fox et. al. 18).

Possible model (in theoretical physics) that have been suggested might explain this include sterile neutrinos (Huang 18) or leptoquarks (Chauhan-Mohanty 18)

Related concepts

• Michelson-Morley experiment

• LHC

  LHCb experiment, Belle experiment

• RHIC

• Super-Kamiokande

• LIGO

• EDGES

References

• University of Hawaii, ANITA Webpage

• ANITA Collaboration, Ultra-high Energy Air Showers Observed by ANITA-IV (arXiv:2008.05690)

Review:

• Stephanie Wissel, Prospects in UHE Neutrino Astronomy, talk at NEUTRINO 2020, June 2020 (pdf, pdf)

See also

• Wikipedia, Antarctic Impulse Transient Antenna,

On the potentially anomalous events recorded:

• Derek B. Fox, Steinn Sigurdsson, Sarah Shandera, Peter Mészáros, Kohta Murase, Miguel Mostafá, Stephane Coutu, The ANITA Anomalous Events as Signatures of a Beyond Standard Model Particle, and Supporting Observations from IceCube (arXiv:1809.09615)

Speculation that sterile neutrinos could explain the ANITA anomaly:

• Guo-yuan Huang, Sterile neutrinos as a possible explanation for the upward air shower events at ANITA, Phys. Rev. D 98, 043019 (2018) (arXivL1804.05362)

Speculation that leptoquarks could (not only explain the flavour anomalies but also) explain the ANITA anomaly:

• Bhavesh Chauhan, Subhendra Mohanty, A common leptoquark solution of flavor and ANITA anomalies (arXiv:1812.00919)

• P. S. Bhupal Dev, Rukmani Mohanta, Sudhanwa Patra, Suchismita Sahoo, Unified explanation of flavor anomalies, radiative neutrino mass and ANITA anomalous events in a vector leptoquark model (arXiv:2004.09464)

Critical discussion:

• L. A. Anchordoqui et al. The pros and cons of beyond standard model interpretations of ANITA events, PoS ICRC2019 (2020) 884, 884 (arXiv:1907.06308, spire:1744116)