Characterization of the newly discovered boson: is it the long-awaited SM Higgs?
by
Sara Bolognesi(Johns Hopkins University (US))
→
US/Central
Sunrise (Fermilab)
Sunrise
Fermilab
Description
The usual way to determine the nature of the new discovered resonance
is to measure his couplings to Standard Model particles by fitting the
signal strength in different decay and production channels.
But the information available in LHC data is much larger!
A detailed shape analysis of the kinematic distributions of the new boson
decay may indeed allow to extract the couplings and tensor structure
of its production and decay amplitude.
The main ingredients needed for this measurement are a complete
modeling of the decay distributions (a.k.a. MELA) and a Monte Carlo
generator able to produce any spin/parity hypothesis for the new resonance (JHUGen MC).
Expectation for spin/parity measurement, using this method, will
be shown, combining ZZ, WW and gamma-gamma final states, as well
as first results of parity analysis from in CMS data (12.2 fb-1).
After a small digression about similar analyses performed in a model-dependent
framework, high luminosity projection for the characterization of the new boson will be discussed.
Trying to answer to the fatal question: when we will be able
to say if the new discovered state is the SM Higgs?
Title: LPC Topic of the Week: Sara Bolognesi
Description:
Community: CMS
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