Determination oftanβfrom the Higgs boson decay at linear colliders

2013/05/23 by Shinya Kanemura, Koji Tsumura, Hiroshi Yokoya · 11 citations
Physics and Astronomy · #Boson #Branching fraction #Coupling (piping) #Coupling constant #Gauge (firearms) #Higgs boson #High-Energy Particle Collisions Research #Materials science #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #Yukawa potential #hep-ph

paper · pdf · doi:10.1103/physrevd.88.055010

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 88(5) (American Physical Society) · 17 pages, 16 eps files

arxiv created 2013/05/23 · openalex publication_date 2013/09/10 · arxiv updated 2014/01/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

In the two Higgs doublet models, tan\ensuremathβ is an important parameter, which is defined as the ratio of the vacuum expectation values of the doublets. We study how accurately tan\ensuremathβ can be determined at linear colliders via the precision measurement of the decay branching fraction of the standard model (SM)--like Higgs boson. Since the effective coupling constants of the Higgs boson with the weak gauge bosons are expected to be measured accurately, the branching ratios can be precisely determined. Consequently, tan\ensuremathβ can be determined with a certain amount of accuracy. Comparing the method to those using direct production of the additional Higgs bosons, we find that, depending on the type of Yukawa interactions, the precision measurement of the decay of the SM-like Higgs boson can be the best way to determine tan\ensuremathβ, when the deviations in the coupling constants with the gauge boson from the SM prediction are observed at linear colliders.

Citations

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