In particle physics, particle decay is the spontaneous process of one unstable subatomic particle transforming into multiple other particles. The particles...

generally produced in the process of alpha decay but may also be produced in different ways. Alpha particles are named after the first letter in the Greek...

beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electron or positron emitted by the radioactive decay of...

electric charge, and no colour charge. It is also very unstable, decaying into other particles almost immediately upon generation. The Higgs field is a scalar...

radioactivity:: 142  alpha-decay -> strong interaction, beta-decay -> weak interaction, gamma-decay -> electromagnetism. In alpha decay, a particle containing two...

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...

Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus). The parent nucleus transforms...

In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron)...

mostly a result of radioactive decay and secondary radiation from atmospheric interactions with cosmic ray particles. However, there are other rare natural...

Flavour (particle physics) Generation (particle physics) Koide formula Lepton Since the tauonic lepton number is conserved in weak decays, a tau neutrino...

of its decay products is small, providing few kinetic degrees of freedom for decay. Muon decay almost always produces at least three particles, which...

particles are truly punctual. Both elementary (such as muons) and composite particles (such as uranium nuclei), are known to undergo particle decay....

this light neutral particle from Chadwick's heavy neutron. In Fermi's theory of beta decay, Chadwick's large neutral particle could decay to a proton, electron...

carrier particle for the electromagnetic force. The W±  bosons are best known for their role in nuclear decay. Consider, for example, the beta decay of cobalt-60...

subatomic particles which have no charge; neutron radiation neutrinos mesons muons Mechanisms that produce particle radiation include: alpha decay Auger effect...

beta particle (β+), the other beta particle being the electron (β−) emitted from the β− decay of a nucleus. An example of positron emission (β+ decay) is...

corresponding particle of generations prior. Thus, there are three generations of quarks and leptons. As first-generation particles do not decay, they comprise...

the mechanism of interaction between subatomic particles that is responsible for the radioactive decay of atoms: The weak interaction participates in...

decay is a prominent quantity in many sub-fields of particle physics, such as chiral perturbation theory. This rate is parametrized by the pion decay...

Since the mesons decay through weak interactions, parity is not conserved, and the two decays are actually decays of the same particle, now called the...

physics, a subatomic particle is a particle smaller than an atom. According to the Standard Model of particle physics, a subatomic particle can be either a...

known as a Majorana particle. In 1939, Wendell H. Furry proposed that if neutrinos are Majorana particles, then double beta decay can proceed without...

physics. Neutrons are not elementary particles; each is composed of three quarks. A free neutron spontaneously decays to a proton, an electron, and an antineutrino...

will rapidly change into electrons and neutrinos through a process of particle decay: the transformation from a higher mass state to a lower mass state....

and the environment. Alpha decay is characterized by the emission of an alpha particle, a 4He nucleus. The mode of this decay causes the parent nucleus...

Hadronic decay modes of J/ψ are strongly suppressed because of the OZI rule. This effect strongly increases the lifetime of the particle and thereby...

three-body decays are often dominated by resonant processes, in which the particle decays into two decay products, with one of those decay products immediately...

exist. Particles in higher generations generally have greater mass and less stability, causing them to decay into lower-generation particles by means...

amounts of time to decay (order of 1034+ years). By way of comparison, free neutrons are the longest-lived unstable particle, and decay with a half-life...

S. Biswas of the University of Melbourne, as a neutral V particle with a proton as a decay product, thus correctly distinguishing it as a baryon, rather...