2 2 M ay 1 99 8 CLNS 98 / 1557 CLEO 98 - 7 First Search for CP violation in Tau Lepton Decay CLEO

نویسندگان

  • S. J. Lee
  • J. J. O’Neill
  • R. Poling
  • T. Riehle
  • A. Smith
  • M. S. Alam
  • S. B. Athar
  • Z. Ling
  • A. H. Mahmood
  • S. Timm
  • F. Wappler
  • A. Anastassov
  • J. E. Duboscq
  • D. Fujino
  • K. K. Gan
  • T. Hart
  • K. Honscheid
  • H. Kagan
  • R. Kass
  • J. Lee
  • H. Schwarthoff
  • M. B. Spencer
  • M. Sung
  • A. Undrus
  • A. Wolf
  • M. M. Zoeller
  • S. J. Richichi
  • H. Severini
  • P. Skubic
  • M. Bishai
  • J. Fast
  • J. W. Hinson
  • N. Menon
  • D. H. Miller
  • E. I. Shibata
  • I. P. J. Shipsey
  • M. Yurko
  • S. Roberts
  • E. H. Thorndike
  • C. P. Jessop
  • K. Lingel
  • H. Marsiske
  • M. L. Perl
  • V. Savinov
  • D. Ugolini
  • X. Zhou
  • T. E. Coan
  • L. P. Perera
  • G. J. Zhou
  • M. Chadha
  • J. Urheim
  • A. J. Weinstein
  • F. Würthwein
  • D. W. Bliss
  • D. E. Jaffe
  • G. Masek
  • H. P. Paar
  • E. M. Potter
  • S. Prell
  • V. Sharma
  • D. M. Asner
  • J. Gronberg
  • T. S. Hill
  • D. J. Lange
  • R. J. Morrison
  • H. N. Nelson
  • T. K. Nelson
  • D. Roberts
  • B. H. Behrens
  • W. T. Ford
  • A. Gritsan
  • J. Roy
  • J. G. Smith
  • J. P. Alexander
  • P. I. Hopman
  • J. Kandaswamy
چکیده

We have performed the first search for CP violation in tau lepton decay. CP violation in lepton decay does not occur in the minimal standard model but can occur in extensions such as the multi-Higgs doublet model. It appears as a characteristic difference between the τ and τ decay angular distributions for the semi-leptonic decay modes such as τ → Kπν. We define an observable asymmetry to exploit this and find no evidence for any CP violation.

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تاریخ انتشار 1998