KL,Sππνν¯ decays within and beyond the standard model

Cheng-Wei Chiang and Frederick J. Gilman
Phys. Rev. D 62, 094026 – Published 12 October 2000
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Abstract

The decays KL,Sπoπoνν¯ and KL,Sπ+πνν¯ involve the weak transition from a strange to a non-strange quark. Although they have considerably smaller branching ratios than those for the corresponding rare processes involving single pions, some may be more distinguishable experimentally from background processes and thus could provide another probe of the sdνν¯ transition. Using the recent knowledge of the CKM matrix elements and measurements of related processes, we give improved predictions for their branching ratios both within and beyond the standard model.

  • Received 14 July 2000

DOI:https://doi.org/10.1103/PhysRevD.62.094026

©2000 American Physical Society

Authors & Affiliations

Cheng-Wei Chiang* and Frederick J. Gilman

  • Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213

  • *Electronic address: chengwei@andrew.cmu.edu
  • Electronic address: gilman@cmuhep2.phys.cmu.edu

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Vol. 62, Iss. 9 — 1 November 2000

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