LHC Higgs Boson searches
نویسنده
چکیده
A summary of the Higgs boson searches by the ATLAS and CMS collabrations using 1 f b −1 of LHC data is presented, concentrating on the Standard Model Higgs boson. Both experiments have the sensitivity to exclude at 95% CL a Standard Model Higgs boson in most of the Higgs boson mass region between about 130 GeV and 400 GeV. The observed data allow the exclusion of a Higgs Boson of mass 155 GeV to 190 GeV and 295 GeV to 450 GeV (ATLAS) and 149 GeV to 206 GeV and 300 GeV to 440 GeV (CMS). The lower limits are not as constraining as might be expected due to an excess in both experiments of order 2-3σ which could be related to a low mass Higgs boson or to a statistical fluctuation.
منابع مشابه
Suggestions for Benchmark Scenarios for MSSM Higgs Boson Searches at Hadron Colliders∗
The Higgs boson search has shifted from LEP2 to the Tevatron and will subsequently move to the LHC. Due to the different initial states, the Higgs production and decay channels relevant for Higgs boson searches were different at LEP2 to what they are at hadron colliders. We suggest new benchmark scenarios for the MSSM Higgs boson search at hadron colliders that exemplify the phenomenology of di...
متن کاملHiggs Physics Review of recent results and prospects from ATLAS and CMS
An overview of recent results in Higgs boson physics obtained with the ATLAS and CMS experiments at the Large Hadron Collider located at CERN, Geneva, is presented. The focus is on measurements of the properties of the recently discovered Higgs boson with a mass of about 125 GeV. A brief selection of results in searches for Higgs bosons beyond the Standard Model is given, and prospects of futur...
متن کاملMSSM Higgs Boson Searches at the Tevatron and the LHC: Impact of Different Benchmark Scenarios
The Higgs boson search has shifted from LEP2 to the Tevatron and will subsequently move to the LHC. The current limits from the Tevatron and the prospective sensitivities at the LHC are often interpreted in specific MSSM scenarios. For heavy Higgs boson production and subsequent decay into bb̄ or ττ, the present Tevatron data allow to set limits in the MA–tan β plane for small MA and large tanβ ...
متن کاملGluon-induced WW background to Higgs boson searches at the LHC
Vector-boson pair production is an important background for Higgs boson and new physics searches at the Large Hadron Collider LHC. We have calculated the loop-induced gluon-fusion process gg → WW → leptons, allowing for arbitrary invariant masses of the intermediate W bosons. This process contributes at O(αs ) relative to quarkantiquark annihilation, but its importance is enhanced by the large ...
متن کاملHiding a Heavy Higgs Boson at the 7 TeV LHC
A heavy Standard Model Higgs boson is not only disfavored by electroweak precision observables but is also excluded by direct searches at the 7 TeV LHC for a wide range of masses. Here, we examine scenarios where a heavy Higgs boson can be made consistent with both the indirect constraints and the direct null searches by adding only one new particle beyond the Standard Model. This new particle ...
متن کامل