skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Model-independent Higgs coupling measurements at the LHC using the H{yields}ZZ{yields}4l lineshape

Abstract

We show that combining a direct measurement of the Higgs total width from the H{yields}ZZ{yields}4l lineshape with Higgs signal rate measurements allows Higgs couplings to be extracted in a model-independent way from CERN LHC data. Using existing experimental studies with 30 fb{sup -1} at one detector of the 14 TeV LHC, we show that the couplings squared of a 190 GeV Higgs to WW, ZZ, and gg can be extracted with statistical precisions of about 10%, and a 95% confidence level upper limit on an unobserved component of the Higgs decay width of about 22% of the standard model Higgs width can be set. The method can also be applied for heavier Higgs masses.

Authors:
 [1];  [2]
  1. Carleton University, Ottawa, Ontario K1S 5B6 (Canada)
  2. University of Ottawa, Ottawa, Ontario K1N 6N5 (Canada)
Publication Date:
OSTI Identifier:
21607747
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 84; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.84.073001; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CERN LHC; COUPLING; GEV RANGE 100-1000; HIGGS BOSONS; HIGGS MODEL; MASS; PARTICLE DECAY; STANDARD MODEL; TEV RANGE 01-10; ACCELERATORS; BOSONS; CYCLIC ACCELERATORS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FIELD THEORIES; GEV RANGE; GRAND UNIFIED THEORY; MATHEMATICAL MODELS; PARTICLE MODELS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; STORAGE RINGS; SYNCHROTRONS; TEV RANGE; UNIFIED GAUGE MODELS

Citation Formats

Logan, Heather E., and Salvail, Jeff Z. Model-independent Higgs coupling measurements at the LHC using the H{yields}ZZ{yields}4l lineshape. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.84.073001.
Logan, Heather E., & Salvail, Jeff Z. Model-independent Higgs coupling measurements at the LHC using the H{yields}ZZ{yields}4l lineshape. United States. doi:10.1103/PHYSREVD.84.073001.
Logan, Heather E., and Salvail, Jeff Z. Sat . "Model-independent Higgs coupling measurements at the LHC using the H{yields}ZZ{yields}4l lineshape". United States. doi:10.1103/PHYSREVD.84.073001.
@article{osti_21607747,
title = {Model-independent Higgs coupling measurements at the LHC using the H{yields}ZZ{yields}4l lineshape},
author = {Logan, Heather E. and Salvail, Jeff Z.},
abstractNote = {We show that combining a direct measurement of the Higgs total width from the H{yields}ZZ{yields}4l lineshape with Higgs signal rate measurements allows Higgs couplings to be extracted in a model-independent way from CERN LHC data. Using existing experimental studies with 30 fb{sup -1} at one detector of the 14 TeV LHC, we show that the couplings squared of a 190 GeV Higgs to WW, ZZ, and gg can be extracted with statistical precisions of about 10%, and a 95% confidence level upper limit on an unobserved component of the Higgs decay width of about 22% of the standard model Higgs width can be set. The method can also be applied for heavier Higgs masses.},
doi = {10.1103/PHYSREVD.84.073001},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 7,
volume = 84,
place = {United States},
year = {2011},
month = {10}
}