Weak Isospin - Weak Isospin and The W Bosons

Weak Isospin and The W Bosons

The symmetry associated with spin is SU(2). This requires gauge bosons to transform between weak isospin charges: bosons W+, W− and W0. This implies that W bosons have a T = 1, with three different values of T3.

  • W+ boson (T3 = +1) is emitted in transitions {(T3 = +1⁄2) → (T3 = −1⁄2)},
  • W− boson (T3 = −1) is emitted in transitions {(T3 = −1⁄2) → (T3 = +1⁄2)}.
  • W0 boson (T3 = 0) would be emitted in reactions where T3 does not change. However, under electroweak unification, the W0 boson mixes with the weak hypercharge gauge boson B, resulting in the observed Z0 boson and the photon of Quantum Electrodynamics.

Read more about this topic:  Weak Isospin

Famous quotes containing the word weak:

    “She’s in the house.
    She’s at turn after turn.
    She’s behind me.
    She’s in front of me.
    She’s in my bed.
    She’s on path after path,
    and I’m weak from want of her.
    O heart,
    there is no reality for me
    other than she she
    she she she she
    in the whole of the reeling world.
    And philosophers talk about Oneness.”
    —Amaru (c. seventh century A.D.)