Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In particle physics, W'' and Z'' bosons (or W-prime and Z-prime bosons) refer to hypothetical new gauge bosons that couple to Standard Model fermions via their isospin. They are named in analogy with the Standard Model W and Z bosons.W'' bosons often arise in models with an extra SU(2) gauge group. SU(2) × SU(2) is spontaneously broken to the diagonal subgroup SU(2)W which corresponds to the electroweak SU(2). More generally, we might have n copies of SU(2), which are then broken down to a diagonal SU(2)W.
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