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Title: Search for Standard Model Higgs Boson Production in Association with a W Boson using a Neural Network

Abstract

We present a search for standard model Higgs boson production in association with a W boson in proton-antiproton collisions (p{bar p} {yields} W{sup {+-}}H {yields} {ell}{nu}b{bar b}) at a center of mass energy of 1.96 TeV. The search employs data collected with the CDF II detector that correspond to an integrated luminosity of approximately 1.9 fb{sup -1}. We select events consistent with a signature of a single charged lepton (e{sup {+-}}/{mu}{sup {+-}}), missing transverse energy, and two jets. Jets corresponding to bottom quarks are identified with a secondary vertex tagging method, a jet probability tagging method, and a neural network filter. We use kinematic information in an artificial neural network to improve discrimination between signal and background compared to previous analyses. The observed number of events and the neural network output distributions are consistent with the standard model background expectations, and we set 95% confidence level upper limits on the production cross section times branching fraction ranging from 1.2 to 1.1 pb or 7.5 to 102 times the standard model expectation for Higgs boson masses from 110 to 150 GeV/c{sup 2}, respectively.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
958320
Report Number(s):
FERMILAB-PUB-09-248-E
arXiv eprint number arXiv:0905.3155; TRN: US1000205
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Phys.Rev.D80:012002,2009
Additional Journal Information:
Journal Name: Phys.Rev.D80:012002,2009
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; A CENTERS; CROSS SECTIONS; FERMILAB COLLIDER DETECTOR; HIGGS BOSONS; INTERMEDIATE BOSONS; LEPTONS; LUMINOSITY; NEURAL NETWORKS; PROBABILITY; PRODUCTION; QUARKS; STANDARD MODEL; TRANSVERSE ENERGY; Experiment-HEP

Citation Formats

Aaltonen, T, /Helsinki Inst. of Phys., Adelman, Jahred A, /Chicago U., EFI, Akimoto, T, /Tsukuba U., Alvarez Gonzalez, B, /Cantabria Inst. of Phys., Amerio, S, /INFN, Padua, Amidei, Dante E, /Michigan U., Anastassov, A, /Northwestern U., Annovi, Alberto, /Frascati, Antos, Jaroslav, /Comenius U., Apollinari, G, /Fermilab, Apresyan, A, and /Purdue U. /Waseda U. Search for Standard Model Higgs Boson Production in Association with a W Boson using a Neural Network. United States: N. p., 2009. Web.
Aaltonen, T, /Helsinki Inst. of Phys., Adelman, Jahred A, /Chicago U., EFI, Akimoto, T, /Tsukuba U., Alvarez Gonzalez, B, /Cantabria Inst. of Phys., Amerio, S, /INFN, Padua, Amidei, Dante E, /Michigan U., Anastassov, A, /Northwestern U., Annovi, Alberto, /Frascati, Antos, Jaroslav, /Comenius U., Apollinari, G, /Fermilab, Apresyan, A, & /Purdue U. /Waseda U. Search for Standard Model Higgs Boson Production in Association with a W Boson using a Neural Network. United States.
Aaltonen, T, /Helsinki Inst. of Phys., Adelman, Jahred A, /Chicago U., EFI, Akimoto, T, /Tsukuba U., Alvarez Gonzalez, B, /Cantabria Inst. of Phys., Amerio, S, /INFN, Padua, Amidei, Dante E, /Michigan U., Anastassov, A, /Northwestern U., Annovi, Alberto, /Frascati, Antos, Jaroslav, /Comenius U., Apollinari, G, /Fermilab, Apresyan, A, and /Purdue U. /Waseda U. Fri . "Search for Standard Model Higgs Boson Production in Association with a W Boson using a Neural Network". United States. https://www.osti.gov/servlets/purl/958320.
@article{osti_958320,
title = {Search for Standard Model Higgs Boson Production in Association with a W Boson using a Neural Network},
author = {Aaltonen, T and /Helsinki Inst. of Phys. and Adelman, Jahred A and /Chicago U., EFI and Akimoto, T and /Tsukuba U. and Alvarez Gonzalez, B and /Cantabria Inst. of Phys. and Amerio, S and /INFN, Padua and Amidei, Dante E and /Michigan U. and Anastassov, A and /Northwestern U. and Annovi, Alberto and /Frascati and Antos, Jaroslav and /Comenius U. and Apollinari, G and /Fermilab and Apresyan, A and /Purdue U. /Waseda U.},
abstractNote = {We present a search for standard model Higgs boson production in association with a W boson in proton-antiproton collisions (p{bar p} {yields} W{sup {+-}}H {yields} {ell}{nu}b{bar b}) at a center of mass energy of 1.96 TeV. The search employs data collected with the CDF II detector that correspond to an integrated luminosity of approximately 1.9 fb{sup -1}. We select events consistent with a signature of a single charged lepton (e{sup {+-}}/{mu}{sup {+-}}), missing transverse energy, and two jets. Jets corresponding to bottom quarks are identified with a secondary vertex tagging method, a jet probability tagging method, and a neural network filter. We use kinematic information in an artificial neural network to improve discrimination between signal and background compared to previous analyses. The observed number of events and the neural network output distributions are consistent with the standard model background expectations, and we set 95% confidence level upper limits on the production cross section times branching fraction ranging from 1.2 to 1.1 pb or 7.5 to 102 times the standard model expectation for Higgs boson masses from 110 to 150 GeV/c{sup 2}, respectively.},
doi = {},
journal = {Phys.Rev.D80:012002,2009},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {5}
}