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...

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...

Protons have a positive charge distribution, which decays approximately exponentially, with a root mean square charge radius of about 0.8 fm. Protons...

slowly and inexorably grow darker. According to theories that predict proton decay, the stellar remnants left behind will disappear, leaving behind only...

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...

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...

Y_{\text{W}}.} Proton decay is a hypothetical form of radioactive decay, predicted by many grand unification theories. During proton decay, the common baryonic...

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...

neutrons or protons decay by beta decay (including positron decay), electron capture or more exotic means, such as spontaneous fission and cluster decay. The...

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...

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...

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...

much more common result of proton–proton reactions within the star, and diprotons almost immediately decay back into two protons. Since the conversion of...

unification might be detected through indirect observations of the following: proton decay, electric dipole moments of elementary particles, or the properties of...

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...

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...

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...

observatory was designed to detect high-energy neutrinos, to search for proton decay, study solar and atmospheric neutrinos, and keep watch for supernovae...

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...

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...

(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...

(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...

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...

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...

: §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...

protons at a target to produce positron-emitting radionuclides, e.g. fluorine-18. Radionuclide generators contain a parent radionuclide that decays to...

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...

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...

95% confidence. Decay to smaller vacuum expectation value, resulting in decrease of Casimir effect and destabilization of proton. Decay to vacuum with...

types of nuclear decay. Unstable nuclides with a nonoptimal number of neutrons or protons decay by beta decay (including positron decay), electron capture...