Documents in the NTIS Technical Reports collection are the results of federally funded research. They are directly submitted to or collected by NTIS from Federal agencies for permanent accessibility to industry, academia and the public.  Before purchasing from NTIS, you may want to check for free access from (1) the issuing organization's website; (2) the U.S. Government Printing Office's Federal Digital System website http://www.gpo.gov/fdsys; (3) the federal government Internet portal USA.gov; or (4) a web search conducted using a commercial search engine such as http://www.google.com.
Accession Number DE2012-1045809
Title Comparison of LHC and ILC Capabilities for Higgs Boson Coupling Measurements.
Publication Date Jul 2012
Media Count 16p
Personal Author M. E. Peskin
Abstract Now that a scalar boson of mass about 125 GeV has been discovered by the ATLAS and CMS experiments, the question of the hour is: Is this the Higgs boson. The key property of the Standard Model Higgs boson is that its coupling to each fermion and boson species are proportional to its mass. For a boson at 125 GeV, we can test this for a large number of Standard Model species. How accurate must these tests be. Today, we would be pleased to achieve accuracies of 30-50% in the couplings. Agreement to this accuracy would make a strong case that the particle discovered at the LHC is indeed the Higgs boson. However, there is a second interesting question that should be addressed. Many models with new physics beyond the Standard Model contain a light Higgs boson with properties very similar to the Higgs boson of the Standard Model. Haber has called attention to the 'Decoupling Limit' as a generic phenomenon in new physics models. In a large region of parameter space, the Higgs couplings in such moer from those in the Standard Model by 10% or less. Recently, Gupta, Rzehak, and Wells have illustrated this phenomenon in a wide variety of models.
Keywords Accuracy
Bosons
Coupling constants
Decoupling
Fermions
Hadrons
Higgs bosons
Linear colliders
Probes
Scalars
Sensitivity
Standard model


 
Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 46 - Physics
Corporate Author Stanford Linear Accelerator Center, CA.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1226
Contract Number DE-AC02-76SF00515

Science and Technology Highlights

See a sampling of the latest scientific, technical and engineering information from NTIS in the NTIS Technical Reports Newsletter

Acrobat Reader Mobile    Acrobat Reader