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Inclusive spin-momentum analysis and new physics at a polarized electron-positron collider

Ananthanarayan, B and Rindani, Saurabh D (2018) Inclusive spin-momentum analysis and new physics at a polarized electron-positron collider. In: EUROPEAN PHYSICAL JOURNAL C, 78 (2).

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Official URL: http://dx.doi.org/10.1140/epjc/s10052-018-5592-8

Abstract

We consider the momentum distribution and the polarization of an inclusive heavy fermion in a process assumed to arise from standard-model (SM) s-channel exchange of a virtual gamma or Z with a further contribution from physics beyond the standard model involving s-channel exchanges. The interference of the new-physics amplitude with the SM gamma or Z exchange amplitude is expressed entirely in terms of the space-time signature of such new physics. Transverse as well as longitudinal polarizations of the electron and positron beams are taken into account. Similarly, we consider the cases of the polarization of the observed final-state fermion along longitudinal and two transverse spin-quantization axes, which are required for a full reconstruction of the spin dependence of the process. We show how these model-independent distributions can be used to deduce some general properties of the nature of the interaction and some of their properties in prior work which made use of spin-momentum correlations.

Item Type: Journal Article
Additional Information: Copy right for this article belong to the SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Depositing User: Id for Latest eprints
Date Deposited: 02 Mar 2018 14:51
Last Modified: 02 Mar 2018 14:51
URI: http://eprints.iisc.ac.in/id/eprint/59077

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