### Abstract

The discovery of the Higgs boson, with a mass known to be better than the percent level, enables precision Higgs boson analyses for the first time. Toward this goal, we define an expansion formalism of the Higgs boson partial widths and branching fractions that facilitates such studies. This expansion yields the observables as a perturbative expansion around reference values of Standard Model input observables (quark masses, QCD coupling constant, etc.). We compute the coefficients of the expansion using state-of-the-art results. We also study the various sources of uncertainties in computing the partial widths and branching fractions more precisely. We discuss the impact of these results with efforts to discern new physics through precision Higgs boson studies.

Original language | English |
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Article number | 033006 |

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 89 |

Issue number | 3 |

DOIs | |

Publication status | Published - 2014 Feb 12 |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)

### Cite this

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*89*(3), [033006]. https://doi.org/10.1103/PhysRevD.89.033006

**Study of the standard model Higgs boson partial widths and branching fractions.** / Almeida, Leandro G.; Lee, Seung Joon; Pokorski, Stefan; Wells, James D.

Research output: Contribution to journal › Article

*Physical Review D - Particles, Fields, Gravitation and Cosmology*, vol. 89, no. 3, 033006. https://doi.org/10.1103/PhysRevD.89.033006

}

TY - JOUR

T1 - Study of the standard model Higgs boson partial widths and branching fractions

AU - Almeida, Leandro G.

AU - Lee, Seung Joon

AU - Pokorski, Stefan

AU - Wells, James D.

PY - 2014/2/12

Y1 - 2014/2/12

N2 - The discovery of the Higgs boson, with a mass known to be better than the percent level, enables precision Higgs boson analyses for the first time. Toward this goal, we define an expansion formalism of the Higgs boson partial widths and branching fractions that facilitates such studies. This expansion yields the observables as a perturbative expansion around reference values of Standard Model input observables (quark masses, QCD coupling constant, etc.). We compute the coefficients of the expansion using state-of-the-art results. We also study the various sources of uncertainties in computing the partial widths and branching fractions more precisely. We discuss the impact of these results with efforts to discern new physics through precision Higgs boson studies.

AB - The discovery of the Higgs boson, with a mass known to be better than the percent level, enables precision Higgs boson analyses for the first time. Toward this goal, we define an expansion formalism of the Higgs boson partial widths and branching fractions that facilitates such studies. This expansion yields the observables as a perturbative expansion around reference values of Standard Model input observables (quark masses, QCD coupling constant, etc.). We compute the coefficients of the expansion using state-of-the-art results. We also study the various sources of uncertainties in computing the partial widths and branching fractions more precisely. We discuss the impact of these results with efforts to discern new physics through precision Higgs boson studies.

UR - http://www.scopus.com/inward/record.url?scp=84894662381&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84894662381&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.89.033006

DO - 10.1103/PhysRevD.89.033006

M3 - Article

AN - SCOPUS:84894662381

VL - 89

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 3

M1 - 033006

ER -