Review of searches for Higgs bosons and?beyond?the?Standard?Model Physics at?the?Tevatron

摘要

The energy frontier is currently at the Fermilab Tevatron accelerator, which collides protons and antiprotons at a center-of-mass energy of 1.96?TeV. The luminosity delivered to the CDF and D? experiments has now surpassed the 4?fb?1. This paper reviews the most recent direct searches for Higgs bosons and beyond-the-standard-model (BSM) physics at the Tevatron. The results reported correspond to an integrated luminosity of up to 2.5?fb?1 of Run II data collected by the two Collaborations. Searches covered include the standard model (SM) Higgs boson (including sensitivity projections), the neutral Higgs bosons in the minimal supersymmetric extension of the standard model (MSSM), charged Higgs bosons and extended Higgs models, supersymmetric decays that conserve or violate R-parity, gauge-mediated supersymmetric breaking models, long-lived particles, leptoquarks, compositeness, extra gauge bosons, extra dimensions, and finally signature-based searches. Given the excellent performance of the collider and the continued productivity of the experiments, the Tevatron physics potential looks promising for discovery with the coming larger data sets. In particular, evidence for the SM Higgs boson could be obtained if its mass is light or near 160?GeV. The observed (expected) upper limits are currently a factor of 3.7?(3.3) higher than the expected SM Higgs boson cross section at mH=115?GeV and 1.1?(1.6) at mH=160?GeV at 95%?C.L.