Higgs and Supersymmetric Particle Signals at the Infrared Fixed Point of the Top Quark Mass

Abstract

We study the properties of the Higgs and supersymmetric particle spectrum associated with the infrared fixed point solution of the top quark mass in the MSSM. We concentrate on the possible detection of these particles, analysing the deviations from the Standard Model predictions for the leptonic and hadronic variables measured at LEP and for the decay rate $b\to s\gamma$. We consider the low and moderate $\tan \beta$ regime, and we study both, the cases of universal and non--universal soft supersymmetry breaking parameters at high energies. In the first case, for any given value of the top quark mass, the Higgs and sparticle spectra are completely determined as a function of two soft supersymmetry breaking parameters. In the case of non--universality, instead, the strong correlations between the sparticle masses are relaxed, allowing a richer structure for the precision data variables. We show, however, that the requirement that the low energy theory proceeds from a grand unified theory with a local symmetry group including $SU(5)$, strongly constrains the set of possible indirect experimental signatures. As a general feature, whenever a significant deviation from the Standard Model value of the precision data variables is predicted, a light sparticle, visible at LEP2, appears in the spectrum.

42 pages, 16 figures (not included), CERN-TH.7393/93

References in corpus (46)

• The Top Quark Mass in Supersymmetric SO(10) Unification
• Electroweak Symmetry Breaking and Bottom-Top Yukawa Unification
• Model-Independent Analysis of Soft Terms in Effective Supergravity and in String Theory
• Towards a Theory of Soft Terms for the Supersymmetric Standard Model
• Evidence for Top Quark Production in $\bar{p}p$ Collisions at $\sqrt{s}=1.8$ TeV
• Supersymmetric Grand Unified Theories: Two Loop Evolution of Gauge and Yukawa Couplings
• Theoretical Uncertainties and Phenomenological Aspects of $B\to X_s\gamma$ Decay
• The Renormalization-Group Improved Higgs Sector of the Minimal Supersymmetric Model
• The Supersymmetric Particle Spectrum
• The Lightest Higgs Boson Mass in the Minimal Supersymmetric Standard Model
• Uncertainties in Coupling Constant Unification
• $b\to s\gamma$ Decay and Supersymmetry
• On the Unification of Couplings in the Minimal Supersymmetric Standard Model
• Implications of non-universality of soft terms in supersymmetric grand unified theories
• Electroweak Symmetry Breaking with Non-Universal Scalar Soft Terms and Large $\tan \beta$ Solutions
• Mass formulae and natural hierarchy in string effective supergravities
• Low-Energy Effective Lagrangian in Unified Theories with Non-Universal Supersymmetry Breaking Terms
• Phenomenological Implications of the m_t RGE Fixed Point for SUSY Higgs Boson Searches
• Phenomenological Implications of the $m_t$ RGE Fixed Point for SUSY Higgs Boson Searches
• The Bottom Mass Prediction in Supersymmetric Grand Unification; Uncertainties and Constraints
• Search for High Mass Top Quark Production in p anti-p Collisions at S**(1/2) = 1.8 TeV
• Radiative Electroweak Symmetry Breaking and the Infrared Fixed Point of the Top Quark Mass
• Implications of Yukawa unification for the Higgs sector in supersymmetric grand-unified models
• GUT effects in the soft supersymmetry breaking terms
• Infrared Fixed Point Solution for the Top Quark Mass and Unification of Couplings in the MSSM
• Bottom-Up Approach to Uniefied Supergravity Models
• Implications of the Partial Width Z->bb for Supersymmetry Searches and Model-Building
• Soft SUSY Breaking Terms in Stringy Scenarios: Computation and Phenomenological Viability
• $b\to s\gamma$ Decay in Supergravity Grand Unification and Dark Matter
• Finite Unified Models
• Phenomenological Implications of Supersymmetry Breaking by the Dilaton
• Towards a dynamical determination of parameters in the Minimal Supersymmetric Standard Model
• The b -> s gamma decay in supergravity with radiatively electroweak breaking
• Constraints on SUSY-GUT unification from $b\to s\gamma$ decay
• On soft breaking and CP phases in the supersymmetric standard model
• New constraints on supergravity models from $b\to s\gamma$
• Constraining Supergravity Scenarios through the $b\to s,\gamma$ Decay.
• Predictions for Constrained Minimal Supersymmetry with Bottom-Tau Mass Unification
• Supercollider Signatures of Supergravity Models with Yukawa Unification
• Nuclear Null Tests for Spacelike Neutrinos
• Large Top and Bottom Yukawa Couplings in Minimal Supersymmetry
• Supersymmetric Models With Tan(beta) Close to Unity
• New Precision Electroweak Tests of SU(5) x U(1) Supergravity
• ${\epsilon }_b$ Constraints on the Minimal $SU(5)$ and $SU(5)\times U(1)$ Supergravity Models
• Is the stop mass below the top mass?
• Exploring the Yukawa Unified Minimal Supergravity Model at the Tevatron, LEP-II, and the LHC

Cited by in corpus (56)

• Opening the Window for Electroweak Baryogenesis
• Gravitational Waves from Electroweak Phase Transitions
• Electroweak Baryogenesis and Higgs and Stop Searches at LEP and the Tevatron
• Relic Density of Neutralino Dark Matter in Supergravity Models
• Coannihilation Effects in Supergravity and D-Brane Models
• Top Quark and Higgs Boson Masses: Interplay between Infrared and Ultraviolet Physics
• Higgs Boson Physics in the $s$-channel at ${\mu }^{+}{\mu }^{-}$ Colliders
• Electroweak Precision Tests: A Concise Review
• Naturalness bounds on gauge mediated soft terms
• Low-energy supersymmetry with D-term contributions to scalar masses
• Gravitational waves from the electroweak phase transition
• Velocity of electroweak bubble walls
• A Detailed Study of the Gluino Decay into the Third Generation Squarks at the CERN LHC
• Solving the Supersymmetric Flavor Problem with Radiatively Generated Mass Hierarchies
• Prospects for heavy supersymmetric charged Higgs boson searches at hadron colliders
• The Quasi-Fixed MSSM
• Implications of the reported deviations from the standard model for Z->bb and alpha_s
• Quasi-infra-red fixed points and renormalisation group invariant trajectories for non-holomorphic soft supersymmetry breaking
• On fixed points and fermion mass structure from large extra dimensions
• The Higgs mass in the MSSM infrared fixed point scenario
• The Light Higgsino-Gaugino Window
• Electroweak Symmetry Breaking and Higgs Physics
• Scenery from the Top: Study of the Third Generation Squarks at CERN LHC
• The top squark-mediated annihilation scenario and direct detection of dark matter in compressed supersymmetry
• The Higgs Boson Mass as a Probe of the Minimal Supersymmetric Standard Model
• One-loop corrections to the top, stop and gluino masses in the MSSM
• Infrared Quasi Fixed Points and Mass Predictions in the MSSM
• Chargino Mass and $R_b$ Anomaly
• On Metastability in Supersymmetric Models
• First-order cosmological phase transitions in the radiation dominated era
• Infrared Quasi Fixed Points and Mass Predictions in the MSSM II: Large tan(beta) Scenario
• Stability of cosmological deflagration fronts
• $SU(2)\otimes SU(2)$ Gauge Extensions of the MSSM Revisited
• Four-Generation Low Energy Supersymmetry with a Light Top Quark
• Optimal Charge and Color Breaking conditions in the MSSM
• Fixed point scenario in the Two Higgs Doublet Model inspired by degenerate vacua
• Analytical Study of Non-Universality of the Soft Terms in the MSSM
• Infra-red stability of Yukawa and soft-breaking fixed points
• Hubble-induced radiative corrections and Affleck-Dine Baryogenesis
• The tan(beta) - M_H^\pm bound from inclusive semi-tauonic B-decays in the MSSM
• The Search for Supersymmetry at the Tevatron Collider
• Top-bottom-tau Yukawa coupling unification in the MSSM+1VF and fermion masses as IR fixed points
• Phenomenological Constraints on the Higgs as Pseudo-Goldstone Boson Mechanism in Supersymmetric GUT Theories
• Scale dependence of quark mass matrices in models with flavor symmetries
• Soft Masses in Strong Unification
• Mass predictions based on a supersymmetric SU(5) fixed point
• Renormalizaion group equations and infrared quasi fixed point behaviors of non-universal soft terms in MSSM
• Little Conformal Symmetry
• The Higgs Boson: Shall We See It Soon Or Is It Still Far Away?
• Radiatively induced light right-handed stop
• Relic neutralinos in a best-fitted MSSM
• Effects of 126 dimensional Higgs scalar on Bottom-Tau unification and quasi-infrared fixed point
• Light Higgsino Detection at LEP1.5
• Focus points and the Lightest Higgs Boson Mass in the Minimal Supersymmetric Standard Model
• Supersymmetry at the electroweak scale
• Higgs Searches at Future Colliders: Potentials for Discovery and Diagnosis