muon

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And in a cavern in Gran Sasso in Italy, the highest part of the Apennines, an experiment is looking at another oscillation, that between muon- and tau-neutrinos.
并且在意大利格朗薩索的一個(gè)山洞中（亞平寧山脈的最高區(qū)域）進(jìn)行的一項(xiàng)實(shí)驗(yàn)，正在關(guān)注另一種震蕩——繆子中微子和陶子中微子之間的震蕩。
The team prepares a beam of just one type, muon neutrinos, sending them from Cern to an underground laboratory at Gran Sasso in Italy to see how many show up as a different type, tau neutrinos.
這個(gè)小組準(zhǔn)備了一束單一類別的中微子即μ介子中微子并將它們由研究所射向位于意大利Gran Sasso地下的實(shí)驗(yàn)室來觀察有多少變換了種類，τ介子中微子。
About 1% of the time the muon finds itself in the 2S state, where it can be excited to the 2P state by absorbing a photon from a laser pulse. The 2P state then decays with the emission of an X-ray.
大約1%的時(shí)間，μ介子自已找到2S能級位置，這個(gè)位置上μ介子可以吸收來自激光的一個(gè)量子被激發(fā)到2P能級，隨后發(fā)出X光，2P能級位置隨之下降。

This distance-related decline is strong evidence of a gradual shift from muon-to tau-flavoured neutrinos.
ECONOMIST: Neutrinos
But occasionally a neutrino reacts with an atom to create a particle called a muon.
ECONOMIST: Neutrino astronomy
But experiments have kept turning up almost equal numbers of electron and muon neutrinos.
ECONOMIST: Neutrinos

a type of elementary particle (= a very small piece of matter) with the same negative charge as an electron, but much larger

a positive or negative elementary particle with a mass 207 times that of an electron and spin . It was originally called the mu meson but is now classified as a lepton