Electroweak precision constraints at present and future colliders

Article
Report number	arXiv:1611.05354
Title	Electroweak precision constraints at present and future colliders
Related title	Electroweak precision constraints at present and future colliders
Author(s)	de Blas, Jorge (INFN, Rome) ; Ciuchini, Marco (INFN, Rome3) ; Franco, Enrico (INFN, Rome) ; Mishima, Satoshi (KEK, Tsukuba) ; Pierini, Maurizio (CERN) ; Reina, Laura (Florida State U.) ; Silvestrini, Luca (INFN, Rome)
Publication	SISSA, 2017-02-09
Imprint	16 Nov 2016
Number of pages	7
Note	6 + 1 pages, 4 figures, 6 tables. Minor corrections. Contribution to the Proceedings of the 38th International Conference on High Energy Physics, 3-10 August 2016, Chicago, U.S.A
In:	PoS ICHEP2016 (2017) 690
In:	38th International Conference on High Energy Physics, Chicago, IL, USA, 03 - 10 Aug 2016, pp.690
DOI	10.22323/1.282.0690
Subject category	Particle Physics - Experiment ; hep-ex ; hep-ph ; Particle Physics - Phenomenology
Abstract	We revisit the global fit to electroweak precision observables in the Standard Model and present model-independent bounds on several general new physics scenarios. We present a projection of the fit based on the expected experimental improvements at future $e^+ e^-$ colliders, and compare the constraining power of some of the different experiments that have been proposed. All results have been obtained with the HEPfit code.
Copyright/License	arXiv nonexclusive-distrib. 1.0 publication: (License: CC-BY-NC-SA)

$(Left) $68\%$, $95\%$, and $99\%$ probability contours for the $S$ and $T$ parameters. (Center) $68\%$ and $95\%$ probability contours for $S$ and $T$ fixing $U=0$, together with the individual constraints from $M_W$, the asymmetry parameters $\sin^2\theta_{\rm eff}^{\rm lept}$, $P_\tau^{\rm pol}$, $A_f$, and $A_{\rm FB}^{0,f}$ with $f=\ell,c,b$, and $\Gamma_Z$. (Right) Expected sensitivities to $S,~T,~U$ at future colliders. Different shades of the same colour correspond to results including or neglecting the future theoretical uncertainties.$ $(Left) $68\%$, $95\%$, and $99\%$ probability contours for the $S$ and $T$ parameters. (Center) $68\%$ and $95\%$ probability contours for $S$ and $T$ fixing $U=0$, together with the individual constraints from $M_W$, the asymmetry parameters $\sin^2\theta_{\rm eff}^{\rm lept}$, $P_\tau^{\rm pol}$, $A_f$, and $A_{\rm FB}^{0,f}$ with $f=\ell,c,b$, and $\Gamma_Z$. (Right) Expected sensitivities to $S,~T,~U$ at future colliders. Different shades of the same colour correspond to results including or neglecting the future theoretical uncertainties.$ $(Left) $68\%$, $95\%$, and $99\%$ probability contours for the $S$ and $T$ parameters. (Center) $68\%$ and $95\%$ probability contours for $S$ and $T$ fixing $U=0$, together with the individual constraints from $M_W$, the asymmetry parameters $\sin^2\theta_{\rm eff}^{\rm lept}$, $P_\tau^{\rm pol}$, $A_f$, and $A_{\rm FB}^{0,f}$ with $f=\ell,c,b$, and $\Gamma_Z$. (Right) Expected sensitivities to $S,~T,~U$ at future colliders. Different shades of the same colour correspond to results including or neglecting the future theoretical uncertainties.$ Show more plots

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Record created 2016-11-17, last modified 2022-08-05

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