Effects of Superheavy Quarks and Leptons in Low-Energy Weak Processes k(L) ---> mu anti-mu, K+ ---> pi+ Neutrino anti-neutrino and K0 <---> anti-K0
May, 198029 pages
Published in:
- Prog.Theor.Phys. 65 (1981) 297,
- Prog.Theor.Phys. 65 (1981) 1772 (erratum)
DOI:
- 10.1143/PTP.65.297 (publication),
- 10.1143/PTP.65.1772 (erratum)
Report number:
- UT-KOMABA-80-8
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Abstract: (Oxford Journals)
We investigate potentially important effects due to the existence of superheavy quarks and leptons of the sequential type in higher-order weak processes at low energies. The second-order ΔS≠0 neutral-current processes K_L→µµ̅, K^+→π^+νν̅ and K_L-K_S mass difference are analysed allowing for fermions of masses comparable to or larger than the weak-boson mass in the Kobayashi-Maskawa scheme and in the general sequential scheme with an arbitrary number of generations. Possible connection between heavy-quark masses and light-heavy quark mixing are also examined. The requirement that the rare decay processes such as K_L→µµ̅ and K^+→π^+νν̅ be absent up to order αG_F yields a rather stringent bound on the magnitude of light-heavy quark mixing: Such mixing has to be less than m_W/m_Quark times a factor much smaller than unity.- K0(L): LEPTONIC DECAY
- LEPTONIC DECAY: K0(L)
- K+: SEMILEPTONIC DECAY
- SEMILEPTONIC DECAY: K+
- MASS DIFFERENCE: K0(L)-K0(S)
- K0(L)-K0(S): MASS DIFFERENCE
- heavy quark
- LEPTON: HEAVY
- UNIFIED FIELD THEORY
- WEAK INTERACTION
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