Extracting Effective Higgs Couplings in the Golden Channel
Kinematic distributions in Higgs decays to four charged leptons, the so called ‘golden channel, are a powerful probe of the tensor structure of its couplings to neutral electroweak gauge bosons. In this study we construct the first part of a comprehensive analysis framework designed to maximize the information contained in this channel in order to perform direct extraction of the various possible Higgs couplings. We first complete an earlier analytic calculation of the leading order fully differential cross sections for the golden channel signal and background to include the 4e and 4μ final states with interference between identical final states. We also examine the relative fractions of the different possible combinations of scalartensor couplings by integrating the fully differential cross section over all kinematic variables as well as show various doubly differential spectra for both the signal and background. From these analytic expressions we then construct a ‘generator level’ analysis framework based on the maximum likelihood method. Then, we demonstrate the ability of our framework to perform multiparameter extractions of all the possible effective couplings of a spin0 scalar to pairs of neutral electroweak gauge bosons including any correlations. Furthermore, this framework provides a powerful method for study of thesemore »
 Authors:

^{[1]};
^{[2]}
 California Inst. of Technology (CalTech), Pasadena, CA (United States)
 Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
 Publication Date:
 Report Number(s):
 FERMILABPUB13351T; LPTORSAY1373; NUHEPTH1303
Journal ID: ISSN 10298479; arXiv eprint number arXiv:1310.2893
 Grant/Contract Number:
 AC0207CH11359
 Type:
 Accepted Manuscript
 Journal Name:
 Journal of High Energy Physics (Online)
 Additional Journal Information:
 Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2014; Journal Issue: 57; Journal ID: ISSN 10298479
 Publisher:
 Springer Berlin
 Research Org:
 Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
 Sponsoring Org:
 USDOE Office of Science (SC), High Energy Physics (HEP) (SC25)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; higgs physics; beyond standard model; standard model
 OSTI Identifier:
 1226269
Chen, Yi, and VegaMorales, Roberto. Extracting Effective Higgs Couplings in the Golden Channel. United States: N. p.,
Web. doi:10.1007/JHEP04(2014)057.
Chen, Yi, & VegaMorales, Roberto. Extracting Effective Higgs Couplings in the Golden Channel. United States. doi:10.1007/JHEP04(2014)057.
Chen, Yi, and VegaMorales, Roberto. 2014.
"Extracting Effective Higgs Couplings in the Golden Channel". United States.
doi:10.1007/JHEP04(2014)057. https://www.osti.gov/servlets/purl/1226269.
@article{osti_1226269,
title = {Extracting Effective Higgs Couplings in the Golden Channel},
author = {Chen, Yi and VegaMorales, Roberto},
abstractNote = {Kinematic distributions in Higgs decays to four charged leptons, the so called ‘golden channel, are a powerful probe of the tensor structure of its couplings to neutral electroweak gauge bosons. In this study we construct the first part of a comprehensive analysis framework designed to maximize the information contained in this channel in order to perform direct extraction of the various possible Higgs couplings. We first complete an earlier analytic calculation of the leading order fully differential cross sections for the golden channel signal and background to include the 4e and 4μ final states with interference between identical final states. We also examine the relative fractions of the different possible combinations of scalartensor couplings by integrating the fully differential cross section over all kinematic variables as well as show various doubly differential spectra for both the signal and background. From these analytic expressions we then construct a ‘generator level’ analysis framework based on the maximum likelihood method. Then, we demonstrate the ability of our framework to perform multiparameter extractions of all the possible effective couplings of a spin0 scalar to pairs of neutral electroweak gauge bosons including any correlations. Furthermore, this framework provides a powerful method for study of these couplings and can be readily adapted to include the relevant detector and systematic effects which we demonstrate in an accompanying study to follow.},
doi = {10.1007/JHEP04(2014)057},
journal = {Journal of High Energy Physics (Online)},
number = 57,
volume = 2014,
place = {United States},
year = {2014},
month = {4}
}