The Nonagenarian Neutrino


  • Sivaram Chandra Indian Institute of Astrophysics, Bengaluru, India.
  • Kenath Arun Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, India
  • Kiren OV Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, India



Neutrino, neutrino detection, betadecay


December 4, 2020 marks 90 years since the concept of neutrinos was proposed as a consequence of the observed discrepancies in several experiments on radioactive decays of various isotopes. There have been great many developments in our understanding of this elusive particle over the past nine decades, also leading to several Nobel Prizes awarded to work on neutrino physics. But there are many aspects of the neutrinos that are still not completely understood, including even its actual rest mass. The neutrino still remains an enigma and we have yet to learn a lot about its different properties. This article summarises the overall picture of the current understanding of the neutrino, right from its inception.

Author Biography

Sivaram Chandra, Indian Institute of Astrophysics, Bengaluru, India.

Indian Institute of Astrophysics, Bengaluru, India.


Brown, L. M., The idea of the neutrino. Physics Today, 1978, 31, 23–28.

Wilson, F. L., Fermi's Theory of Beta Decay. American Journal of Physics, 1968, 36, 1150–1160.

Bahcall, J. N., Neutrino Astrophysics, Cambridge University Press, Cambridge, 1989.

Bethe, H. A., Energy Production in Stars, Physical Review, 1939, 55, 541–547.

Bellerive, A., Review of solar neutrino experiments, International Journal of Modern Physics A, 2004, 19, 1167–1179.

Janka, H-Th., Neutrino Emission from Supernovae In Handbook of Supernovae (eds. Alsabti A. andMurdin P.), Springer, Cham., 2017, pp. 1575–1604.

Arnett, W. D. et al., Supernova 1987A, Annual Review of Astronomy and Astrophysics, 1989, 27, 629–700.

Cigan, P. et al., High Angular Resolution ALMA Images of Dust and Molecules in the SN 1987A Ejecta, Astrophysical Journal, 2019, 886, 51.

Fukuda, S. et al., The Super-Kamiokande detector, Nuclear Instruments and Methods in Physics Research A, 2003, 501, 418–462.

Cleveland B. T. et al., Measurement of the Solar Electron Neutrino Flux with the Homestake Chlorine Detector, Astrophysical Journal, 1998, 496, 505–526.

Bahcall, J. N. et al., How uncertain are solar neutrino predictions?, Physics Letters B, 1998, 433, 1–8.

Reines, F. and Cowan Jr., C.L., The Neutrino, Nature, 1956, 178, 446–449.

Abdurashitov, J. N. et al., Measurement of the solar neutrino capture rate with gallium metal. III. Results for the 2002–2007 data-taking period, Physical Review C, 2009, 80, 015807

Pontecorvo, B., Mesonium and anti-mesonium. Sov. Phys. JETP, 1957, 6, 429–431.

Maki, Z et al., Remarks on the Unified Model of Elementary Particles, Progress of Theoretical Physics, 1962, 28, 870.

Ahmad, Q. R. et al., Measurement of the rate of νe + d → p + p + e− interactions produced by 8B Solar neutrinos at the Sudbury Neutrino Observatory, Physical Review Letters, 2001, 87, 071301.

Fukuda, Y. et al., Evidence for Oscillation of Atmospheric Neutrinos, Physical Review Letters, 1998, 81, 1562–1567.

Gando, A. et al., Partial radiogenic heat model for Earth revealed by geoneutrino measurements, Nature Geoscience, 2011, 4, 647–651.

Angus, G. W. et al., On the Proof of Dark Matter, the Law of Gravity, and the Mass of Neutrinos, Astrophysical Journal Letters, 2007, 654, L13–L16.

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