Glashow resonance

In particle physics, the Glashow resonance is the resonant formation of the W boson in antineutrino-electron collisions:
ν
_e +
e⁻
→
W⁻
.^[1]

History[]

The resonance was proposed by Sheldon L. Glashow in 1959.

Theory[]

The threshold antineutrino energy for this process (for the electron at rest in the laboratory frame) is given by the formula

${\displaystyle E_{\nu }={\frac {M_{W}^{2}-(m_{e}^{2}+m_{\nu }^{2})}{2m_{e}}}\approx {\frac {M_{W}^{2}}{2m_{e}}}}$

(here is, for completeness, included also the antineutrino mass, which vanishes in the Standard model), which gives 6.3 PeV. This process is considered for the detection and studies of high-energy cosmic neutrinos at the IceCube experiment, at the ANTARES neutrino telescope, and at the KM3NeT neutrino telescope.

Detection[]

A report observing the resonance at 2.3σ level has been made by the IceCube experiment.^[2][3]

References[]

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