State which of the following interactions/decays are possible in the Standard-Model and which ones are not permitted. Explain why they are not permitted. Note if an interaction/decay is suppressed. For masses and quark contents, see appendix of the exam paper. gg → H→ W+W¯ ✔ Choose... μ - τνιν μ Φ → π'π πο →> Kg → π+π πο ++ e+e- →> → Z → ds allowed, unsuppressed allowed but CKM suppressed not allowed, no neutral TGC not allowed, lepton number conservation allowed but CP suppressed not allowed: no flavour changing neutral currents allowed but OZI suppressed not allowed (mass) not allowed, no coupling between EWK bosons not allowed, force couples only to charged particles not allowed: force couples only to quarks and gluons Choose... ÷ uū → Z → Veve Choose...

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State which of the following interactions/decays are possible in the Standard-Model and which ones are not permitted. Explain why they are not permitted. Note if an
interaction/decay is suppressed. For masses and quark contents, see appendix of the exam paper.
gg → H→ W+W¯ ✔ Choose...
μ - τνιν μ
Φ → π'π πο
→>
Kg → π+π πο
++
e+e-
→>
→ Z → ds
allowed, unsuppressed
allowed but CKM suppressed
not allowed, no neutral TGC
not allowed, lepton number conservation
allowed but CP suppressed
not allowed: no flavour changing neutral currents
allowed but OZI suppressed
not allowed (mass)
not allowed, no coupling between EWK bosons
not allowed, force couples only to charged particles
not allowed: force couples only to quarks and gluons
Choose...
÷
uū → Z → Veve
Choose...
Transcribed Image Text:State which of the following interactions/decays are possible in the Standard-Model and which ones are not permitted. Explain why they are not permitted. Note if an interaction/decay is suppressed. For masses and quark contents, see appendix of the exam paper. gg → H→ W+W¯ ✔ Choose... μ - τνιν μ Φ → π'π πο →> Kg → π+π πο ++ e+e- →> → Z → ds allowed, unsuppressed allowed but CKM suppressed not allowed, no neutral TGC not allowed, lepton number conservation allowed but CP suppressed not allowed: no flavour changing neutral currents allowed but OZI suppressed not allowed (mass) not allowed, no coupling between EWK bosons not allowed, force couples only to charged particles not allowed: force couples only to quarks and gluons Choose... ÷ uū → Z → Veve Choose...
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