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In particle physics, lepton number (historically also called lepton charge) [1] is a conserved quantum number representing the difference between the number of leptons and the number of antileptons in an elementary particle reaction. [2]
Similarly, the muons and their neutrinos are assigned a muon number of +1 and the tau leptons are assigned a tau lepton number of +1. The Standard Model predicts that each of these three numbers should be conserved separately in a manner similar to the way baryon number is conserved. These numbers are collectively known as lepton family numbers ...
The lepton and baryon asymmetries affect the much better understood Big Bang nucleosynthesis at later times, during which light atomic nuclei began to form. Successful synthesis of the light elements requires that there be an imbalance in the number of baryons and antibaryons to one part in a billion when the universe is a few minutes old. [ 2 ]
The water-based detectors Kamiokande II and IMB detected 11 and 8 antineutrinos (lepton number = −1) of thermal origin, [104] respectively, while the scintillator-based Baksan detector found 5 neutrinos (lepton number = +1) of either thermal or electron-capture origin, in a burst less than 13 seconds long. The neutrino signal from the ...
In particle physics, the Pontecorvo–Maki–Nakagawa–Sakata matrix (PMNS matrix), Maki–Nakagawa–Sakata matrix (MNS matrix), lepton mixing matrix, or neutrino mixing matrix is a unitary [a] mixing matrix that contains information on the mismatch of quantum states of neutrinos when they propagate freely and when they take part in weak ...
LIBERTY, Mo. -- You hear stories from time to time about people finding hidden treasures after a trip to a thrift store. A Clay County woman never imagined it would happen too her, but it did.
An animation of color confinement, a property of the strong interaction.If energy is supplied to the quarks as shown, the gluon tube connecting quarks elongates until it reaches a point where it "snaps" and the energy added to the system results in the formation of a quark–antiquark pair.
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