230 research outputs found

    Composite Higgs: Searches for new physics at future e+e-colliders

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    In this proceeding, we extend a previous analysis concerning the prospects of a future electron-positron collider in testing the 4-Dimensional Composite Higgs Model. In particular, we introduce two motivated benchmarks and study them in Higgs-Strahlung, for three possible energy stages and different luminosity options of such a machine and confront our results to the expected experimental accuracies in the various accessible Higgs decay channels. PACS 12.60.Rc - Composite models. PACS 14.80.Ec - Other neutral Higgs bosons. PACS 14.80.Va - Axions and other Nambu-Goldstone bosons (Majorons, familons, etc.). © Società Italiana di Fisica

    Composite Higgs models and ‾t t production at future e<sup>+</sup>e<sup>-</sup> colliders

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    The study of the top quark properties will be an integral part of any particle physics activity at future leptonic colliders. In this proceeding we discuss the possibility of testing composite Higgs scenarios at e+e- prototypes through deviations from the Standard Model predictions in ‾t t production observables for various centre of mass energies, ranging from 370 GeV up to 1 TeV. This proceedings draws from Ref. arXiv:1504.0540

    Future electron-positron colliders and the 4-dimensional composite Higgs model

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    In this note we analyse the prospects of a future electron-positron collider in testing a particular realisation of a composite Higgs model encompassing partial compositeness, namely, the 4-Dimensional Composite Higgs Model. We study the main Higgs production channels for three possible energy stages and different luminosity options of such a machine and confront our results to the expected experimental accuracies in the various Higgs decay channels accessible herein and, for comparison, also at the Large Hadron Collider. © The Authors

    Tree-level unitarity bounds for the minimal B-L model

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    We have derived the unitarity bounds in the high energy limit for the minimal B-L extension of the standard model by analyzing the full class of Higgs and would-be Goldstone boson two-to-two scatterings at tree level. Moreover, we have investigated how these limits could vary at some lower critical value of the energy

    LHC physics of extra gauge bosons in the 4D Composite Higgs Model

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    We study the phenomenology of both the Neutral Current (NC) and Charged Current (CC) Drell-Yan (DY) processes at the Large Hadron Collider (LHC) within a 4 Dimensional realization of a Composite Higgs model with partial compositness by estimating the integrated and differential event rates and taking into account the possible impact of the extra fermions present in the spectrum. We show that, in certain regions of the parameters space, the multiple neutral resonances present in the model can be distinguishable and experimentally accessible in the invariant or transverse mass distributions. <br/
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