Search for violation of CP invariance in τ± decay

W. T. Ford, P. A. Piroué, R. S. Remmel, A. J S Smith, Paul A Souder

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

We report a comparison of the Dalitz-plot distributions of 1.6 million τ+ decays (K+→π+π+π-) and an equal number of τ- decays. No significant asymmetry has been found in any region of the plot. In terms of the difference in the slope parameters a+ and a- for the odd-pion c.m.-energy spectra, the asymmetry is Δ=(a+-a-)(a++a-)=-0.0070±0.0053. We also present a preliminary result for the slope parameter itself: a=0.283±0.005. New measurements of the τ± decay rates and their difference confirm previous results.

Original languageEnglish (US)
Pages (from-to)1370-1373
Number of pages4
JournalPhysical Review Letters
Volume25
Issue number19
DOIs
StatePublished - 1970
Externally publishedYes

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invariance
plots
asymmetry
slopes
decay
decay rates
energy spectra
pions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ford, W. T., Piroué, P. A., Remmel, R. S., Smith, A. J. S., & Souder, P. A. (1970). Search for violation of CP invariance in τ± decay. Physical Review Letters, 25(19), 1370-1373. https://doi.org/10.1103/PhysRevLett.25.1370

Search for violation of CP invariance in τ± decay. / Ford, W. T.; Piroué, P. A.; Remmel, R. S.; Smith, A. J S; Souder, Paul A.

In: Physical Review Letters, Vol. 25, No. 19, 1970, p. 1370-1373.

Research output: Contribution to journalArticle

Ford, WT, Piroué, PA, Remmel, RS, Smith, AJS & Souder, PA 1970, 'Search for violation of CP invariance in τ± decay', Physical Review Letters, vol. 25, no. 19, pp. 1370-1373. https://doi.org/10.1103/PhysRevLett.25.1370
Ford, W. T. ; Piroué, P. A. ; Remmel, R. S. ; Smith, A. J S ; Souder, Paul A. / Search for violation of CP invariance in τ± decay. In: Physical Review Letters. 1970 ; Vol. 25, No. 19. pp. 1370-1373.
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