Top-spin analysis of new scalar and tensor interactions in e(+)e(-) collisions with beam polarization

Ananthanarayan, B and Patra, Monalisa and Rindani, Saurabh D (2011) Top-spin analysis of new scalar and tensor interactions in e(+)e(-) collisions with beam polarization. In: Physical Review D - Particles, Fields, Gravitation and Cosmology, 83 (1).

PDF Top-Spin.pdf - Published Version Restricted to Registered users only Download (342kB) | Request a copy

Abstract

We utilize top polarization in the process e(+)e(-) -> t (t) over bar at the International Linear Collider ( ILC) with transverse beam polarization to probe interactions of the scalar and tensor type beyond the standard model and to disentangle their individual contributions. Ninety percent confidence level limits on the interactions with realistic integrated luminosity are presented and are found to improve by an order of magnitude compared to the case when the spin of the top quark is not measured. Sensitivities of the order of a few times 10(-3) TeV-2 for real and imaginary parts of both scalar and tensor couplings at root s = 500 and 800 GeV with an integrated luminosity of 500 fb(-1) and completely polarized beams are shown to be possible. A powerful model-independent framework for inclusive measurements is employed to describe the spin-momentum correlations, and their C, P, and T properties are presented in a technical appendix.

Item Type:	Journal Article
Publication:	Physical Review D - Particles, Fields, Gravitation and Cosmology
Publisher:	The American Physical Society
Additional Information:	Copyright of this article belongs to The American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited:	09 Mar 2011 04:46
Last Modified:	09 Mar 2011 04:46
URI:	http://eprints.iisc.ac.in/id/eprint/35876

Actions (login required)

View Item