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In particle physics, weak isospin is a quantum number relating to the electrically charged part of the weak interaction: Particles with half-integer weak isospin can interact with the W± bosons; particles with zero weak isospin do not.
Weak isospin is a construct parallel to the idea of isospin under the strong interaction. Weak isospin is usually given the symbol T or I, with the third component written as T3 or I3.T3 is more important than T; typically "weak isospin" is used as short form of the proper term "3rd component of weak isospin". It can be understood as the eigenvalue of a charge operator.
particles with zero weakisospin do not. Weakisospin is a construct parallel to the idea of isospin under the strong interaction. Weakisospin is usually given...
physics and particle physics, isospin (I) is a quantum number related to the up- and down quark content of the particle. Isospin is also known as isobaric...
particle physics, the weak hypercharge is a quantum number relating the electric charge and the third component of weakisospin. It is frequently denoted...
{\displaystyle \,T_{3}\,} is the third component of the weakisospin of the fermion (the "charge" for the weak force), Q {\displaystyle \,Q\,} is the electric...
two electrically charged components that form a complex doublet of the weakisospin SU(2) symmetry. Its "Sombrero potential" leads it to take a nonzero value...
changing the dynamics of the system. These fields are the weakisospin fields W1, W2, and W3, and the weak hypercharge field B. This invariance is known as electroweak...
quantities, such as weakisospin, weak hypercharge, or the vector coupling of a fermion to the Z boson (i.e. the coupling strength of weak neutral currents)...
distinguished from neutrinos by having opposite-signed lepton number and weakisospin, and right-handed instead of left-handed chirality. To conserve total...
fields of the weakisospin SU(2) and the weak hypercharge U(1) symmetries to three massive vector bosons ( W+ , W− , Z0 ) mediating the weak interaction...
accounts for properties of isospin, electric charge, and flavour. The hypercharge is useful to classify hadrons; the similarly named weak hypercharge has an analogous...
not only electric charge, but also charges such as color charge and weakisospin. Because of a phenomenon known as color confinement, a hadron cannot...
between a color index and the weakisospin-up index, while Y bosons rotate between a color index and the weakisospin-down index. B − L Grand unification...
reflecting the fact that the two were the "up" and "down" component of a weakisospin doublet. The proposal of Kobayashi and Maskawa heavily relied on the...
also carry electric charge and weakisospin, and thus interact with other fermions through electromagnetism and weak interaction. The six leptons consist...
active neutrinos in the Standard Model, which carry an isospin charge of ±+1/ 2 and engage in the weak interaction. The term typically refers to neutrinos...
the right-handed down-type quark color triplet and a left-handed lepton isospin doublet, while the 10 contains the six up-type quark components, the left-handed...
angle can be expressed in terms of the SU(2)L and U(1)Y couplings (weakisospin g and weak hypercharge g′, respectively), cosθw=g g2+g′ 2 {\displaystyle...
the leptons involved, following the convention in use for the sign of weakisospin and the sign of strangeness quantum number (for quarks), both of which...
In particular, since χ ∈ L has weakisospin 1⁄2 like the Higgs field H, and η {\displaystyle \eta } has weakisospin 0, the mass parameter M can be generated...
involves a transfer of electric charge (as well as a transfer of weakisospin, while weak hypercharge is not transferred), it is known as “charged current”...
(violated by the weak interaction) Conservation of strangeness (violated by the weak interaction) Conservation of space-parity (violated by the weak interaction)...
is determined by a derived quantum number called weak charge, which acts similarly to weakisospin for interactions with the W bosons. The neutral current...
the bottom quark can decay into either an up quark or charm quark via the weak interaction. CKM matrix elements Vub and Vcb specify the rates, where both...
called isospin), which is a scalar under Lorentz transformations. Its electric charge is zero; its weakisospin is 1/2 and the third component of weak isospin...
in second-order weak reactions, where there are mixes of K0 and K0 mesons. All in all, the amount of strangeness can change in a weak interaction reaction...