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CP-Violation in the Production of Tau-Leptons at TESLA with Beam Polarization | | B. Ananthanarayan
; Saurabh D. Rindani
; Achim Stahl
; | | Date: |
19 Apr 2002 | | Journal: | Eur.Phys.J. C27 (2003) 33-41 | | Subject: | hep-ph | | Abstract: | We study the prospects of discovering CP-violation in the production of tau-leptons in the reaction {e+e- --> tau+tau- at TESLA, an e+e- linear collider with center-of-mass energies of 500 or even 800 GeV. Non-vanishing expectation values of certain correlations between the momenta of the decay products of the two tau leptons would signalthe presence of CP-violation beyond the standard model. We study how longitudinal beam polarization of the electron and positron beams will enhance these correlations. We find that T-odd and T-even vector correlations are well suited for the measurements of the real and imaginary parts of the electric dipole form factors. We expect measurements of the real part with a precision of roughly 10^-20 ecm and of the imaginary part of 10^-17 ecm. This compares well with the size of the expected effects in many extensions of the standard model. | | Source: | arXiv, hep-ph/0204233 | | Services: | Forum | Review | PDF | Favorites | |
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