Resolving the degeneracy in single Higgs production with Higgs pair production

Cao, Qing-Hong; Yan, Bin; Zhang, Dong-Ming; Zhang, Hao

doi:10.1016/j.physletb.2015.11.045

Title: Resolving the degeneracy in single Higgs production with Higgs pair production

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Abstract

The Higgs boson production can be affected by several anomalous couplings, e.g. ct and cg anomalous couplings. Precise measurement of gg → h production yields two degenerate parameter spaces of ct and cg; one parameter space exhibits the SM limit while the other does not. Such a degeneracy could be resolved by Higgs boson pair production. In this work we adapt the strategy suggested by the ATLAS collaboration to explore the potential of distinguishing the degeneracy at the 14 TeV LHC. If the ct anomalous coupling is induced only by the operator H↑HQ¯_LH^~t_R, then the non-SM-like band could be excluded with an integrated luminosity of ~235 fb^–1. Making use of the fact that the Higgs boson pair is mainly produced through an s-wave scattering, we propose an analytical function to describe the fraction of signal events surviving a series of experimental cuts for a given invariant mass of Higgs boson pair. As a result, the function is model independent and can be applied to estimate the discovery potential of various NP models.

Authors:

; Yan, Bin; Zhang, Dong-Ming; Zhang, Hao

Publication Date:: Fri Jan 01 00:00:00 EST 2016

Research Org.:: Univ. of California, Santa Barbara, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1227231

Alternate Identifier(s):: OSTI ID: 1238800

Grant/Contract Number:: SC0011702

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 752 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Cao, Qing-Hong, Yan, Bin, Zhang, Dong-Ming, and Zhang, Hao. Resolving the degeneracy in single Higgs production with Higgs pair production.  Netherlands: N. p., 2016. 
Web.  doi:10.1016/j.physletb.2015.11.045.

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                    Cao, Qing-Hong, Yan, Bin, Zhang, Dong-Ming, & Zhang, Hao. Resolving the degeneracy in single Higgs production with Higgs pair production.  Netherlands.  https://doi.org/10.1016/j.physletb.2015.11.045

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                    Cao, Qing-Hong, Yan, Bin, Zhang, Dong-Ming, and Zhang, Hao. Fri .  
"Resolving the degeneracy in single Higgs production with Higgs pair production".  Netherlands.  https://doi.org/10.1016/j.physletb.2015.11.045.

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@article{osti_1227231,

  title        = {Resolving the degeneracy in single Higgs production with Higgs pair production},

  author       = {Cao, Qing-Hong and Yan, Bin and Zhang, Dong-Ming and Zhang, Hao},

  abstractNote = {The Higgs boson production can be affected by several anomalous couplings, e.g. ct and cg anomalous couplings. Precise measurement of gg → h production yields two degenerate parameter spaces of ct and cg; one parameter space exhibits the SM limit while the other does not. Such a degeneracy could be resolved by Higgs boson pair production. In this work we adapt the strategy suggested by the ATLAS collaboration to explore the potential of distinguishing the degeneracy at the 14 TeV LHC. If the ct anomalous coupling is induced only by the operator H↑HQ¯LH~tR, then the non-SM-like band could be excluded with an integrated luminosity of ~235 fb–1. Making use of the fact that the Higgs boson pair is mainly produced through an s-wave scattering, we propose an analytical function to describe the fraction of signal events surviving a series of experimental cuts for a given invariant mass of Higgs boson pair. As a result, the function is model independent and can be applied to estimate the discovery potential of various NP models.},

  doi          = {10.1016/j.physletb.2015.11.045},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 752,

  place        = {Netherlands},

  year         = {Fri Jan 01 00:00:00 EST 2016},

  month        = {Fri Jan 01 00:00:00 EST 2016}

}

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