Effects of Superheavy Quarks and Leptons in Low-Energy Weak Processes KL→μμ ̄,K+→π+νν ̄ and K0K ̄0

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Abstract

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→μμ^^-, K^+→π^+νν^^- 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→μμ^^- and K^+→π^+νν^^- 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.

Journal

  • Progress of Theoretical Physics

    Progress of Theoretical Physics 65(1), p297-314, 1981-01

    Published for the Research Institute for Fundamental Physics by Physical Society of Japan

Cited by:  4

Codes

  • NII Article ID (NAID)
    110001206439
  • NII NACSIS-CAT ID (NCID)
    AA00791455
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    0033068X
  • NDL Article ID
    2299725
  • NDL Source Classification
    MC13(理論物理学--量子力学・素粒子論・相対性理論)
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A468
  • Data Source
    CJPref  NDL  NII-ELS 
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