Weak force carriers, W+, Z°, W- have spin 1
Weak force carriers, W+, Z°, W- have spin 1
Weak force carriers, W+, Z°, W- have spin 1
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Close up of Z resonance peak gives the mass of the Z and the number of neutrinos!<br />
7<br />
peak at E cm<br />
= M Z<br />
= 91.2 GeV<br />
(N = 3 looks pretty good!)<br />
Fit gives N = 2.994 +/- 0.012 neutrino types!
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