ATLAS has just released the documentation for the evidence for the decay H->tautau. The documentation can be found at:
http://cds.cern.ch/record/1632191/files/ATLAS-CONF-2013-108.pdf
The Wits group, some of its members and close collaborators have been involved in this search for a number of years.
Showing posts with label Higgs plus jets. Show all posts
Showing posts with label Higgs plus jets. Show all posts
Friday, 29 November 2013
ATLAS releases results which show evidence of the Higgs boson decaying to fermions
The ATLAS experiment just released preliminary results that show evidence, with a significance of 4.1 standard deviations, that the Higgs boson decays to two taus (which are fermions).
More information on this very exciting result can be found here:
http://www.atlas.ch/news/2013/higgs-into-fermions.html
More information on this very exciting result can be found here:
http://www.atlas.ch/news/2013/higgs-into-fermions.html
Tuesday, 26 November 2013
Improving Higgs plus Jets analyses through Fox-Wolfram Moments
The preprint with the title "Improving Higgs plus Jets analyses through Fox-Wolfram Moments" has appeared in the archive today. Among other things one can see a discussion on how the jet veto can be replaced by a moment pertaining to extra jet radiation.
The abstract can be found below:
"It is well known that understanding the structure of jet radiation can significantly improve Higgs analyses. Using Fox-Wolfram moments we systematically study the geometric patterns of additional jets in weak boson fusion Higgs production with a decay to photons. First, we find a significant improvement with respect to the standard analysis based on an analysis of the tagging jet correlations. In addition, we show that replacing a jet veto by a Fox-Wolfram moment analysis of the extra jet radiation almost doubles the signal-to-background ratio. Finally, we show that this improvement can also be achieved based on a modified definition of the Fox-Wolfram moments which avoids introducing a new physical scale below the factorization scale. This modification can reduce the impact of theory uncertainties on the Higgs rate and couplings measurements."
The abstract can be found below:
"It is well known that understanding the structure of jet radiation can significantly improve Higgs analyses. Using Fox-Wolfram moments we systematically study the geometric patterns of additional jets in weak boson fusion Higgs production with a decay to photons. First, we find a significant improvement with respect to the standard analysis based on an analysis of the tagging jet correlations. In addition, we show that replacing a jet veto by a Fox-Wolfram moment analysis of the extra jet radiation almost doubles the signal-to-background ratio. Finally, we show that this improvement can also be achieved based on a modified definition of the Fox-Wolfram moments which avoids introducing a new physical scale below the factorization scale. This modification can reduce the impact of theory uncertainties on the Higgs rate and couplings measurements."
The link to the preprint is:
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