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Тау-честичка: Разлика помеѓу преработките

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Ред 86:
|last9=Feldman
|first9=G. |displayauthors=8
}}</ref> Their equipment consisted of [[SLAC]]'s then-new {{SubatomicParticle|Antielectronpositron}}–{{SubatomicParticle|Electronelectron}} colliding ring, called [[SPEAR]], and the [[Lawrence Berkeley National Laboratory|LBL]] magnetic detector. They could detect and distinguish between leptons, hadrons and [[photon]]s. They did not detect the tau directly, but rather discovered anomalous events:
 
"''We have discovered 64 events of the form''
 
:{{SubatomicParticle|Positronpositron}} + {{SubatomicParticle|Electronelectron}} &rarr; {{SubatomicParticle|Electronelectron+-}} + {{SubatomicParticle|Muonmuon-+}} + at least two undetected particles
 
''for which we have no conventional explanation.''"
Ред 96:
The need for at least two undetected particles was shown by the inability to conserve energy and momentum with only one. However, no other muons, electrons, photons, or hadrons were detected. It was proposed that this event was the production and subsequent decay of a new particle pair:
 
:{{SubatomicParticle|Positronpositron}} + {{SubatomicParticle|Electronelectron}} &rarr; {{SubatomicParticle|Antitauantitau}} + {{SubatomicParticle|Tautau}} &rarr; {{SubatomicParticle|Electronelectron+-}} + {{SubatomicParticle|Muonmuon-+}} + 4{{SubatomicParticle|Neutrinoneutrino}}
 
This was difficult to verify, because the energy to produce the {{SubatomicParticle|Antitau}}{{SubatomicParticle|Tau}} pair is similar to the threshold for [[D meson]] production. Work done at [[DESY]]-Hamburg, and with the [[Direct Electron Counter]] (DELCO) at [[SPEAR]], subsequently established the mass and spin of the tau.
Преземено од „https://mk.wikipedia.org/wiki/Тау-честичка“