Higgs Mass Bounds Separate Models of Electroweak Symmetry Breaking

Abstract

Vacuum stability implies a lower limit on the mass of the higgs boson in the Standard Model (SM). In contrast, an upper limit on the lightest higgs mass can be calculated in supersymmetric (susy) models. The main uncertainty in each limit is the value of the top mass, which may now be fixed by the recent CDF result. We study the possibility that these bounds do not overlap, and find that (i) a mass gap emerges at $m_t\sim 160$ GeV between the SM and the Minimal Susy Standard Model (MSSM); and between the SM and the Minimal plus Singlet Susy Model [(M+1)SSM] if the independent scalar self--coupling of the latter is perturbatively small or if the $\tan \beta$ parameter is large; this gap widens with increasing $m_t$; (ii) there is no overlap between the SM and the MSSM bounds at even smaller values of $m_t$ for the $\tan \beta$ value ($\sim 1$--2) preferred in Supersymmetric Grand Unified Theories. Thus, if the new top mass measurement remains valid, a measurement of the first higgs mass will serve to exclude either the SM or MSSM/(M+1)SSM higgs sectors. In addition, we discuss the upper bound on the lightest higgs mass in susy models with an extended higgs sector, and in models with a strongly interacting higgs sector. Finally, we comment on the discovery potential for the lightest higgses in these models.

18 pages, 5 figures, VAND-TH-94-14

References in corpus (41)

• Observation of Top Quark Production in Pbar-P Collisions
• Observation of the Top Quark
• Study of Constrained Minimal Supersymmetry
• The Renormalization-Group Improved Higgs Sector of the Minimal Supersymmetric Model
• The Lightest Higgs Boson Mass in the Minimal Supersymmetric Standard Model
• Improved Higgs Mass Stability Bound in the Standard Model and Implications for Supersymmetry
• One-Loop Analysis of the Electroweak Breaking in Supersymmetric Models and the Fine-Tuning Problems
• Complete On-Shell Renormalization Scheme for the Minimal Supersymmetric Higgs Sector
• Two-Loop Radiative Corrections to the Lightest Higgs Boson Mass in the Minimal Supersymmetric Model
• IMPROVED METASTABILITY BOUNDS ON THE STANDARD MODEL HIGGS MASS
• Higgs Bosons: Intermediate Mass Range at e+e- Colliders
• Precise Vacuum Stability Bound in the Standard Model
• Renormalization Group Study of the Standard Model and its Extensions: II. the Minimal Supersymmetric Standard Model
• Supersymmetric $b\to s\gamma$ with Large Chargino Contributions
• 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
• 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
• The Decay $b\to s\gamma$ In The Mssm Revisited
• Infrared Fixed Point Solution for the Top Quark Mass and Unification of Couplings in the MSSM
• Light Stop and the $b\to s\gamma$ Process
• Probing supergravity models with the $b\to s\gamma$ microscope
• Supersymmetric predictions for the inclusive $b\to s\gamma$ decay
• The b -> s gamma decay in supergravity with radiatively electroweak breaking
• Constraints on Supersymmetry due to b -> s γ: an Improved Calculation
• Higgs particles at future hadron and electron-positron colliders
• The strongest experimental constraints on SU(5)xU(1) supergravity models
• Constraining Supergravity Scenarios through the $b\to s,\gamma$ Decay.
• Predictions for Constrained Minimal Supersymmetry with Bottom-Tau Mass Unification
• Sparticle and Higgs Production and Detection at LEPII in two Supergravity Models
• Precision Tests of the MSSM
• The Higgs Mass as the Discriminator of Electroweak Models
• The Higgs Boson Mass from Precision Electroweak Data
• Bardeen-Anomaly and Wess-Zumino Term in the Supersymmetric Standard Model
• Mass Bounds in the Standard Model
• Tevatron and LEP-II Probes of Minimal and String-Motivated Supergravity Models
• A Supersymmetric Effective Chiral Lagrangian
• Exploring the Yukawa Unified Minimal Supergravity Model at the Tevatron, LEP-II, and the LHC
• Strongly Interacting Longitudinal Gauge Bosons In Supersymmetric Models
• Searching for the Higgs Boson(s)

Cited by in corpus (15)

• The Next-to-Minimal Supersymmetric Standard Model
• Minimal Supergravity with R-Parity Breaking
• The coupling of the lightest SUSY Higgs boson to two photons in the decoupling regime
• Charged Higgs Boson and Stau Phenomenology in the Simplest R-Parity Breaking Model
• Implementation of the Multiple Point Principle in the Two-Higgs Doublet Model of type II
• Infrared quasi-fixed solutions in the NMSSM
• Particle spectrum in the modified NMSSM in the strong Yukawa coupling limit
• Invisible Higgs Decays to Hooperons in the NMSSM
• Higgs bosons in the simplest SUSY models
• Quasi-fixed point scenario in the modified NMSSM
• Cosmological constant in SUGRA models with Planck scale SUSY breaking and degenerate vacua
• Higgs Boson Mass From Orbifold GUTs
• Renormalization of the soft SUSY breaking terms in the strong Yukawa coupling limit in the NMSSM
• On the origin of approximate custodial symmetry in the Two-Higgs Doublet Model
• Majorana dark matter through the Higgs portal under the vacuum stability lamppost