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7 papers found.
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The leptonic future of the Higgs

Precision study of electroweak symmetry breaking strongly motivates the construction of a lepton collider with center-of-mass energy of at least 240 GeV. Besides Higgsstrahlung (e + e − → hZ), such a collider would measure weak boson pair production (e + e − → WW) with an astonishing precision. The weak-boson-fusion production process (\( {e}^{+}{e}^{-}\to \nu \overline{\nu}h \)) ...

Exploring the nearly degenerate stop region with sbottom decays

A light stop with mass almost degenerate with the lightest neutralino has important connections with both naturalness and dark matter relic abundance. This region is also very hard to probe at colliders. In this paper, we demonstrate the potential of searching for such stop particles at the LHC from sbottom decays, focusing on two channels with final states \( ...

Beyond Higgs couplings: probing the Higgs with angular observables at future e + e − colliders

We study angular observables in the \( {e}^{+}{e}^{-}\to ZH\to {\ell}^{+}{\ell}^{-}b\overline{b} \) channel at future circular e + e − colliders such as CEPC and FCC-ee. Taking into account the impact of realistic cut acceptance and detector effects, we forecast the precision of six angular asymmetries at CEPC (FCC-ee) with center-of-mass energy \( \sqrt{s}=240 \) GeV and 5 (30) ...

Top seesaw with a custodial symmetry, and the 126 GeV Higgs

Hsin-Chia Cheng 0 Jiayin Gu 0 0 Department of Physics, University of California , One Shields Avenue, Davis, CA 95616, U.S.A The composite Higgs models based on the top seesaw mechanism commonly

Higgs mass from compositeness at a multi-TeV scale

Within composite Higgs models based on the top seesaw mechanism, we show that the Higgs field can arise as the pseudo Nambu-Goldstone boson of the broken U(3) L chiral symmetry associated with a vector-like quark and the t-b doublet. As a result, the lightest CP-even neutral state of the composite scalar sector is lighter than the top quark, and can be identified as the newly ...

Stop the top background of the stop search

The main background for the supersymmetric stop direct production search comes from Standard Model \( t\overline t \) events. For the single-lepton search channel, we introduce a few kinematic variables to further suppress this background by focusing on its dileptonic and semileptonic topologies. All are defined to have end points in the background, but not signal distributions. ...

CEP Biomarkers as Potential Tools for Monitoring Therapeutics

BackgroundCarboxyethylpyrrole (CEP) adducts are oxidative modifications derived from docosahexaenoate-containing lipids that are elevated in ocular tissues and plasma in age-related macular degeneration (AMD) and in rodents exposed to intense light. The goal of this study was to determine whether light-induced CEP adducts and autoantibodies are modulated by pretreatment with ...