Muon neutrino

Source: Wikipedia, the free encyclopedia.
Muon neutrino
Leon Lederman, Melvin Schwartz and Jack Steinberger (1962)
MassSmall but non-zero. See neutrino mass.
Electric charge0 e
Color chargeNo
Spin⁠1/2⁠
Weak isospin⁠1/2⁠
Weak hypercharge−1
Chiralityleft-handed (for right-handed neutrinos, see sterile neutrino)

The muon neutrino is an

Leon Lederman, Melvin Schwartz and Jack Steinberger. The discovery was rewarded with the 1988 Nobel Prize in Physics
.

Discovery

The muon neutrino or "neutretto" was hypothesized to exist by a number of physicists in the 1940s.[1] The first paper on it may be Shoichi Sakata and Takesi Inoue's two-meson theory of 1942, which also involved two neutrinos.[2][3] In 1962 Leon M. Lederman, Melvin Schwartz and Jack Steinberger proved the existence of the muon neutrino in an experiment at the Brookhaven National Laboratory.[4] This earned them the 1988 Nobel Prize.[5]

Speed

Main article:
Faster-than-light neutrino anomaly

In September 2011

ICARUS team published results directly contradicting the results of OPERA.[6]

Later, in July 2012, the apparent anomalous super-luminous propagation of neutrinos was traced to a faulty element of the fibre optic timing system in Gran-Sasso. After it was corrected the neutrinos appeared to travel with the speed of light within the errors of the experiment.[7]

See also

References

  1. ^ I.V. Anicin (2005). "The Neutrino - Its Past, Present and Future".
    arXiv:physics/0503172
    .
  2. ^ Shoichi Sakata; Takesi Inoue (1942). "Chukanshi to Yukawa ryushi no Kankei ni tuite". Nippon Suugaku-Butsuri Gakkaishi. 16.
    doi:10.11429/subutsukaishi1927.16.232
    .
  3. ^ Shoichi Sakata; Takesi Inoue (1946). "On the correlations between mesons and Yukawa particles" (PDF). Progress of Theoretical Physics. 1 (4): 143–150.
    doi:10.1143/PTP.1.143
    .
  4. ^ G. Danby; J.-M. Gaillard; K. Goulianos; L. M. Lederman; N. B. Mistry; M. Schwartz; J. Steinberger (1962). "Observation of high-energy neutrino reactions and the existence of two kinds of neutrinos".
    S2CID 120314867
    .
  5. ^ "The Nobel Prize in Physics 1988".
    The Nobel Foundation
    . Retrieved 2010-02-11.
  6. S2CID 55397067
    .
  7. ^ "OPERA experiment reports anomaly in flight time of neutrinos from CERN to Gran Sasso (UPDATE 8 June 2012)". CERN press office. 8 June 2012. Retrieved 19 April 2013.

Further reading

  • The Nobel Foundation
    . Retrieved 2010-02-11.
  • The Nobel Foundation
    . Retrieved 2010-02-11.
  • The Nobel Foundation
    . Retrieved 2010-02-11.
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