1,091 research outputs found
Comparative analysis of the four-fermion contact interactions at e^+e^- and e^-e^- colliders
We study electron-electron contact-interaction searches in the process
e^+e^-\to e^+e^- at a future e^+e^- Linear Collider with both beams
longitudinally polarized. We evaluate the model-independent constraints on the
coupling constants, emphasizing the role of beam polarization, and make a
comparison with the case of e^+e^-\to\mu^+\mu^-.Comment: 5 pages with 3 figures. Talk given at the VII-th International School
- Seminar ``The Actual Problems of Microworld Physics'', Gomel, 28 July - 8
August, 200
Bhabha vs. Moller scattering as a contact-interaction analyzer at a polarized Linear Collider
We discuss electron-electron contact-interaction searches in the Bhabha and
Moller processes at planned Linear Colliders run in the electron-positron and
electron-electron modes, with longitudinally polarized beams. Our analysis is
based on the measurement, for the two processes, of polarized differential
cross sections that allow to disentangle the different, independent,
four-fermion couplings. We evaluate by a model-independent analysis the
sensitivities to the contact coupling constants, emphasizing the role of the
available beam polarization and the complementarity of the two processes in
giving the best limits. We also make a comparison with the potential of
at the same energy and beams polarization.Comment: 18 latex pages, 15 eps figs., some misprints corrected and added ref
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