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On measurement of helicity parameters in top quark decay

  • C.A. Nelson
  • L.J. Adler, Jr.
Theoretical physics

Abstract.

To enable an evaluation of future measurements of the helicity parameters for \(t \rightarrow W^+ b\) decay in regard to \(\tilde{T}_{FS}\) violation, this paper considers the effects of an additional pure-imaginary coupling, \( i g_i / 2 \Lambda_i \) or \( ig_i\), associated with a specific, single additional Lorentz structure, \(i = S, P, S \pm P, \ldots \). Sizable \(\tilde{T}_{FS}\) violation signatures can occur for low-effective mass scales (\( < 320 GeV \)), but in most cases can be more simply excluded by \( 10% \) precision measurement of the probabilities \(P(W_L)\) and \(P(b_L)\). Signatures for excluding the presence of \(\tilde{T}_{FS}\) violation associated with the two dynamical phase-type ambiguities are investigated.

Keywords

Mass Scale Precision Measurement Future Measurement Lorentz Structure Violation Signature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • C.A. Nelson
    • 1
  • L.J. Adler, Jr.
    • 1
  1. 1.Department of Physics, State University of New York at Binghamton, Binghamton, NY 13902-6016, USAUS

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