Indirect Sensitivity to Heavy Z' Bosons at a Multi-TeV e+e- Collider

Battaglia, Marco; De Curtis, Stefania; Coradeschi, Francesco; Dominici, Daniele

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Preprint
Report number	arXiv:1203.0416
Title	Indirect Sensitivity to Heavy Z' Bosons at a Multi-TeV e+e- Collider
Related title	Indirect Sensitivity to Heavy Z' Bosons at a Multi-TeV e+e- Collider
Author(s)	Battaglia, Marco (UC, Santa Cruz ; LBL, Berkeley ; CERN) ; Coradeschi, Francesco (Florence U. ; INFN, Florence) ; De Curtis, Stefania (INFN, Florence) ; Dominici, Daniele (Florence U. ; INFN, Florence)
Publication	2012
Imprint	05 Mar 2012
Number of pages	6
Note	Comments: 6 pages, 5 figures, to appear in the Proceedings of the International Workshop on Future Linear Colliders LCWS2011 6 pages, 5 figures, to appear in the Proceedings of the International Workshop on Future Linear Colliders LCWS2011
Presented at	International Workshop on Future Linear Colliders, Granada, Spain, 26 - 30 Sep 2011
Subject category	Particle Physics - Phenomenology
Abstract	We compare the phenomenology of two models, the so-called minimal Z' and an effective model for a SM-like Higgs realised as a composite state of a new strong interaction, at a multi-TeV linear collider in the hypothesis that the new physics is at a scale beyond the direct reach of the machine.
Other source	Inspire

$Cross section for the $e^+ e^- \to \mu^+ \mu^-$ in the SM at the Born level (solid line), with ISR and beamstrahlung and no cuts (dotted line), and with ISR, beamstrahlung and the cut $E_{f,\bar{f}}>0.8 \, E_{beam}$ (dashed line). The cut selects final state fermions which did not experience significant energy radiation, bringing the cross-section back within $5-10 \%$ of its Born-level value.$ $Observation of new gauge boson resonances in the $\mu^+\mu^-$ channel by auto-scan with 1~ab$^{-1}$ of data at 3~TeV . The two resonances are the $Z_{1,2}$ predicted by the 4-site model, an effective scheme for a 5-D Higgs-less model~\cite{Accomando:2008jh}.$ $Sensitivity of $e^+e^- \to \mu^+ \mu^-$ in the $Z'$ minimal model, for parameters corresponding to the B-L model, at $\sqrt{s}$=3~TeV. The deviations the $\sigma_{\mu \mu}$, $A_{FB}$, $A_{LR}$ and $A_{FB}^{pol}$ observables to the SM predictions are shown in the left panel as a function of $\tilde g_{BL}$ for $M_{Z'}$=10~TeV and in the right panel as function of $M_{Z'}$ for a fixed value of $\tilde g_{BL}$. The continuous line represents the deviation $(\sigma - \sigma^{SM})/\sigma^{SM}$, the dashed line $A_{FB} - A_{FB}^{SM}$, the dotted line $A_{LR} - A_{LR}^{SM}$ and the dot-dashed line $A_{FB}^{pol} - A_{FB}^{pol~SM}$.$ Show more plots

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Record creato 2012-03-05, modificato l'ultima volta il 2021-07-15

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