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

Ananthanarayan, B. ; Patra, Monalisa ; Rindani, Saurabh D. (2011) Top-spin analysis of new scalar and tensor interactions in e+e collisions with beam polarization Physical Review D - Particles, Fields, Gravitation and Cosmology, 83 (1). 016010_1-016010_13. ISSN 1550-7998

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Official URL: http://prd.aps.org/abstract/PRD/v83/i1/e016010

Related URL: http://dx.doi.org/10.1103/PhysRevD.83.016010

Abstract

We utilize top polarization in the process e+e→tt̅ 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 √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:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:43619
Deposited On:14 Jun 2011 11:03
Last Modified:18 May 2016 00:32

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