In particle physics, proton decay is a hypothetical form of particle decay in which the proton decays into lighter subatomic particles, such as a neutral...
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example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted...
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Protons have a positive charge distribution, which decays approximately exponentially, with a root mean square charge radius of about 0.8 fm. Protons...
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slowly and inexorably grow darker. According to theories that predict proton decay, the stellar remnants left behind will disappear, leaving behind only...
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Positron emission (redirect from Beta plus decay)
Positron emission, beta plus decay, or β+ decay is a subtype of radioactive decay called beta decay, in which a proton inside a radionuclide nucleus is...
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Proton emission (also known as proton radioactivity) is a rare type of radioactive decay in which a proton is ejected from a nucleus. Proton emission can...
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X (charge) (section X charge in proton decay)
Y_{\text{W}}.} Proton decay is a hypothetical form of radioactive decay, predicted by many grand unification theories. During proton decay, the common baryonic...
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hours. This isotope has one unpaired proton and one unpaired neutron, so either the proton or the neutron can decay to the other particle, which has opposite...
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neutrons or protons decay by beta decay (including positron decay), electron capture or more exotic means, such as spontaneous fission and cluster decay. The...
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Weak hypercharge (section Proton decay)
Hence neutron decay conserves baryon number B and lepton number L separately, so also the difference B − L is conserved. Proton decay is a prediction...
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and in neutron scattering experiments. A free neutron spontaneously decays to a proton, an electron, and an antineutrino, with a mean lifetime of about 15...
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free neutron has a greater mass than a free proton. However, see proton decay. Understanding of the beta decay process developed over several years, with...
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much more common result of proton–proton reactions within the star, and diprotons almost immediately decay back into two protons. Since the conversion of...
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unification might be detected through indirect observations of the following: proton decay, electric dipole moments of elementary particles, or the properties of...
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which consists of two protons and two neutrons. It has a charge of +2 e and a mass of 4 Da. For example, uranium-238 decays to form thorium-234. While...
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R-parity (section Proton decay)
together, they lead to proton decay. Thus there are further maximal bounds on values of the couplings from maximal bounds on proton decay rate. Without baryon...
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Isotopes of hydrogen (section Decay chains)
isotope consists of only a single proton, it is given the formal name protium. The proton has never been observed to decay, and hydrogen-1 is therefore considered...
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Georgi–Glashow model (section Proton Decay in SU(5))
yields a mechanism for proton decay, and the rate of proton decay can be predicted from the dynamics of the model. However, proton decay has not yet been observed...
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Super-Kamiokande (redirect from Super-Kamioka Nucleon Decay Experiments)
observatory was designed to detect high-energy neutrinos, to search for proton decay, study solar and atmospheric neutrinos, and keep watch for supernovae...
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SO(10) (section Proton decay)
triplets have to be really heavy in order to prevent triplet-mediated proton decays. See doublet-triplet splitting problem. Among the solutions for it is...
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Hyper-Kamiokande (section Proton Decay)
(also Super-K or SK) and T2K experiments, it is designed to search for proton decay and detect neutrinos from natural sources such as the Earth, the atmosphere...
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(both protons and neutrons) exhibit a lower energy state when their number is even, rather than odd. This stability tends to prevent beta decay (in two...
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primary problem with these color triplet Higgs is that they can mediate proton decay in supersymmetric theories that are only suppressed by two powers of...
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Leptoquark (section Leptoquarks and proton decay)
type) are around 1 TeV/c2 (i.e., about 1000 times the proton mass). By definition, leptoquarks decay directly into a quark and a lepton or an antilepton...
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: §IIIE If protons are not stable, white dwarfs will also be kept warm by energy released from proton decay. For a hypothetical proton lifetime of 1037...
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Radionuclide (redirect from Proton deficient)
protons at a target to produce positron-emitting radionuclides, e.g. fluorine-18. Radionuclide generators contain a parent radionuclide that decays to...
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Takumi; Omura, Yuji (2016). "Threshold corrections to dimension-six proton decay operators in non-minimal SUSY SU (5) GUTs". Nuclear Physics B. 910: 1–22...
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Kamioka Observatory (redirect from Kamioka Nucleon Decay Experiment)
for Kamioka Nucleon Decay Experiment. It was a large water Čerenkov detector designed to search for proton decay. To observe the decay of a particle with...
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False vacuum (redirect from Vacuum decay)
95% confidence. Decay to smaller vacuum expectation value, resulting in decrease of Casimir effect and destabilization of proton. Decay to vacuum with...
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radioactive, with extremely long half-lives (discounting the possibility of proton decay, which would make all nuclides ultimately unstable). Some stable nuclides...
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