Signatures of supersymmetry with non-universal Higgs mass at the Large Hadron Collider

被引:0
作者
Subhaditya Bhattacharya
Sanjoy Biswas
Biswarup Mukhopadhyaya
Mihoko M. Nojiri
机构
[1] University of California,Department of Physics and Astronomy
[2] Regional Centre for Accelerator-based Particle Physics,Institute for the Physics and Mathematics of the Universe
[3] Harish-Chandra Research Institute,undefined
[4] University of Tokyo,undefined
[5] Theory Group,undefined
[6] KEK,undefined
[7] The Graduate University for Advanced Studies (SOKENDAI) 1-1 Oho,undefined
来源
Journal of High Energy Physics | / 2012卷
关键词
Supersymmetry Phenomenology;
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摘要
We discuss large non-universality in the Higgs sector at high scale in supersymmetric theories, in the context of the Large Hadron Collider (LHC). In particular, we note that if \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {{m}_{{{{H}_u}}}}^2 - {{m}_{{{{H}_d}}}}^2 $$\end{document} is large and negative \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ ( \simeq {1}{{0}^{{6}}}{\text{Ge}}{{\text{V}}^{{2}}}) $$\end{document} at high scale, the lighter slepton mass eigenstates at the electroweak scale are mostly left chiral, in contrast to a minimal supergravity (mSUGRA) scenario. We utilise this feature to explore different chiral structures of the lowest-lying sleptons, using two methods. First, we study final states with same-sign ditaus. We find that an asymmetry parameter reflecting the polarisation of the taus provides a notable distinction. In addition, we study a charge asymmetry in the jet-lepton invariant mass distribution, arising from decay chains of left-chiral squarks leading to leptons of the first two families.
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