Re-weighing the evidence for a Higgs boson in dileptonic W-boson decays

Article
Report number	arXiv:1108.3468 ; CAVENDISH-HEP-11-18 ; CAVENDISH-HEP-11-18 ; CERN-PH-TH-2011-209
Title	Re-weighing the evidence for a Higgs boson in dileptonic W-boson decays
Author(s)	Barr, Alan J. (Oxford U.) ; Gripaios, Ben (CERN) ; Lester, Christopher G. (Cambridge U.)
Publication	2012
Imprint	18 Aug 2011
Number of pages	3
Note	Comments: 3 pages, 2 figures 3 pages, 2 figures. Changes in v2: (i) implemented a model of detector smearing, (ii) switched LHC simulation from 14 TeV to 7 TeV running, (iii) presenting results for 10 rather than 3 inverse femtobarns, (iv) corrected a typo in Fig 2 legend. Changes in v3: included published erratum
In:	Phys. Rev. Lett. 108 (2012) pp.041803 Phys. Rev. Lett.
DOI	10.1103/PhysRevLett.108.041803
Subject category	Particle Physics - Phenomenology
Abstract	We reconsider observables for discovering and measuring the mass of a Higgs boson via its di-leptonic decays: H --> WW* --> l nu l nu. We define an observable generalizing the transverse mass that takes into account the fact that one of the intermediate W-bosons is likely to be on-shell. We compare this new variable with existing ones and argue that it gives a significant improvement for discovery in the region m_H < 2 m_W.
Copyright/License	Preprint: © 2011-2024 CERN (License: CC-BY-3.0)

$Simulation of $h\rightarrow WW$ signal (for $m_h \in$ $\{130$, 160, 200$\}$\,GeV) for the variables $\mttrue{}$ (above), $\mtstar{}$ (middle) and $\mtbound$ (below). The shading gives the shape of the dominant $WW$ background. It should be noted that a logarithmic $y$-axis scale (and displaced $x$-axis) has been used when plotting $\mtbound$.$ $Simulation of $h\rightarrow WW$ signal (for $m_h \in$ $\{130$, 160, 200$\}$\,GeV) for the variables $\mttrue{}$ (above), $\mtstar{}$ (middle) and $\mtbound$ (below). The shading gives the shape of the dominant $WW$ background. It should be noted that a logarithmic $y$-axis scale (and displaced $x$-axis) has been used when plotting $\mtbound$.$ $Simulation of $h\rightarrow WW$ signal (for $m_h \in$ $\{130$, 160, 200$\}$\,GeV) for the variables $\mttrue{}$ (above), $\mtstar{}$ (middle) and $\mtbound$ (below). The shading gives the shape of the dominant $WW$ background. It should be noted that a logarithmic $y$-axis scale (and displaced $x$-axis) has been used when plotting $\mtbound$.$ Show more plots

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Record created 2011-08-18, last modified 2024-09-28

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