Angular correlations and distributions for searches of CP violation in top quark production and decay

Bernreuther, W.; Nachtmann, O.; Overmann, P.; Schröder, T.

doi:10.1016/0550-3213(92)90545-M

Angular correlations and distributions for searches of CP violation in top quark production and decay

Jun 16, 1992

28 pages

Published in:

Nucl.Phys.B 388 (1992) 53-80,
Nucl.Phys.B 406 (1993) 516-516 (erratum)

Published: 1992

DOI:

10.1016/0550-3213(92)90545-M,
10.1016/0550-3213(93)90180-W (erratum)

Report number:

HD-THEP-92-14

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Abstract: (Elsevier)

Investigation of the t t system at future colliders will offer an excellent opportunity to test the CP symmetry at high energies; viz. to search for CP -violating interactions beyond the Kobayashi-Maskawa mechanism. Here we demonstrate this for t t production in e + e − annihilation. We propose various CP -odd correlations involving the momenta of the charged leptons and/or b ( b ) jets which originate from t ( t ) decay. Possible CP -violating effects in t t production and decay are taken into account in a model-independent way using form factors. In particular we show that there are several correlations which allow us to disentangle possible effects in t t production from those in t and t decay. From a calculation of these correlations and their fluctuations we estimate the statistical sensitivities with which several CP -violating form factors will be measurable for a given number of t t events.

electron positron: annihilation
annihilation: electron positron
top: pair production
pair production: top
top: decay modes
decay modes: top
cross section
angular correlation
CP: violation
form factor: dipole

References(28)

Figures(0)

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