Semileptonic decays of the Higgs boson at the Tevatron

Lykken, Joseph D.; Martin, Adam O.; Winter, Jan-Christopher

doi:10.1007/JHEP08(2012)062

Article
Report number	arXiv:1111.2881 ; FERMILAB-PUB-11-499-T ; CERN-PH-TH-2011-237 ; FERMILAB-PUB-11-499-T ; CERN-PH-TH-2011-237
Title	Semileptonic decays of the Higgs boson at the Tevatron
Author(s)	Lykken, Joseph D. (Fermilab) ; Martin, Adam O. (Fermilab) ; Winter, Jan-Christopher (CERN)
Publication	2012
Imprint	15 Nov 2011
Number of pages	68
Note	Comments: 68 pages, 19 figures 68 pages, 19 figures
In:	JHEP 08 (2012) 062
DOI	10.1007/JHEP08(2012)062
Subject category	Particle Physics - Phenomenology
Abstract	We examine the prospects for extending the Tevatron reach for a Standard Model Higgs boson by including the semileptonic Higgs boson decays h --> WW --> l nu jj for M_h > 2 M_W, and h --> W jj --> l nu jj for M_h < 2 M_W, where j is a hadronic jet. We employ a realistic simulation of the signal and backgrounds using the Sherpa Monte Carlo event generator. We find kinematic selections that enhance the signal over the dominant W+jets background. The resulting sensitivity could be an important addition to ongoing searches, especially in the mass range 120 < M_h < 150 GeV. The techniques described can be extended to Higgs boson searches at the Large Hadron Collider.
Copyright/License	Preprint: © 2011-2025 CERN (License: CC-BY-3.0)

$Examples of observables discriminating between Higgs signal and (the dominant $W$\!+jets) backgrounds. Distributions are shown from the upper left to the lower right, for the reconstructed masses of the $\{e,\nu_e,j,j'\}$ final states, their transverse momenta, the boost of the dijet subsystem with respect to the parent system and the scalar sum of the $p_T$ of the two jets $j$\/ and $j'$. All results are obtained after the combinatorial Higgs boson candidate selection based on an ideal mass reconstruction of the potential resonance. The selection is facilitated by symmetric mass window constraints for both the 4-object and dijet mass: $|m_{e\nu_ejj'}-M_h|<\Delta$ and $|m_{jj'}-M_W|<\delta$, respectively. More detailed explanations will follow in \Sec{sec:results}. Note that the background differential cross sections are scaled down by the respective factors indicated in the legends.$ $Examples of observables discriminating between Higgs signal and (the dominant $W$\!+jets) backgrounds. Distributions are shown from the upper left to the lower right, for the reconstructed masses of the $\{e,\nu_e,j,j'\}$ final states, their transverse momenta, the boost of the dijet subsystem with respect to the parent system and the scalar sum of the $p_T$ of the two jets $j$\/ and $j'$. All results are obtained after the combinatorial Higgs boson candidate selection based on an ideal mass reconstruction of the potential resonance. The selection is facilitated by symmetric mass window constraints for both the 4-object and dijet mass: $|m_{e\nu_ejj'}-M_h|<\Delta$ and $|m_{jj'}-M_W|<\delta$, respectively. More detailed explanations will follow in \Sec{sec:results}. Note that the background differential cross sections are scaled down by the respective factors indicated in the legends.$ $Examples of observables discriminating between Higgs signal and (the dominant $W$\!+jets) backgrounds. Distributions are shown from the upper left to the lower right, for the reconstructed masses of the $\{e,\nu_e,j,j'\}$ final states, their transverse momenta, the boost of the dijet subsystem with respect to the parent system and the scalar sum of the $p_T$ of the two jets $j$\/ and $j'$. All results are obtained after the combinatorial Higgs boson candidate selection based on an ideal mass reconstruction of the potential resonance. The selection is facilitated by symmetric mass window constraints for both the 4-object and dijet mass: $|m_{e\nu_ejj'}-M_h|<\Delta$ and $|m_{jj'}-M_W|<\delta$, respectively. More detailed explanations will follow in \Sec{sec:results}. Note that the background differential cross sections are scaled down by the respective factors indicated in the legends.$ Show more plots

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