Gauge dependence and renormalization of tan β in the minimal supersymmetric standard model

Freitas, Ayres; Stöckinger, Dominik

doi:10.1103/physrevd.66.095014

Cited by 104 publications

(156 citation statements)

References 19 publications

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“…• The ratio of the vacuum expectation values of the Higgs doublets, tanβ, is renormalized as a DR parameter and its counterterm is given by [92][93][94][95][96][97] …”

Section: Jhep05(2015)128mentioning

confidence: 99%

Two-loop contributions of the order O α t α s $$ \mathcal{O}\left({\alpha}_t{\alpha}_s\right) $$ to the masses of the Higgs bosons in the CP-violating NMSSM

Mühlleitner

Nhung

Rzehak

et al. 2015

J. High Energ. Phys.

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Abstract:We provide the two-loop corrections to the Higgs boson masses of the CPviolating NMSSM in the Feynman diagrammatic approach with vanishing external momentum at O(α t α s ). The adopted renormalization scheme is a mixture between DR and on-shell conditions. Additionally, the renormalization of the top/stop sector is provided both for the DR and the on-shell scheme. The calculation is performed in the gaugeless limit. We find that the two-loop corrections compared to the one-loop corrections are of the order of 5-10%, depending on the top/stop renormalization scheme. The theoretical error on the Higgs boson masses is reduced due to the inclusion of these higher order corrections.

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“…• The ratio of the vacuum expectation values of the Higgs doublets, tanβ, is renormalized as a DR parameter and its counterterm is given by [92][93][94][95][96][97] …”

Section: Jhep05(2015)128mentioning

confidence: 99%

Two-loop contributions of the order O α t α s $$ \mathcal{O}\left({\alpha}_t{\alpha}_s\right) $$ to the masses of the Higgs bosons in the CP-violating NMSSM

Mühlleitner

Nhung

Rzehak

et al. 2015

J. High Energ. Phys.

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“…[10] the Higgs propagator corrections have been taken into account in an α eff approximation only. Concerning tan β, we use the MS definition that in general leads to a better numerical stability [15,36]. While in Ref.…”

Section: Comparison With Existing Resultsmentioning

confidence: 99%

MSSM Higgs-boson production at the linear collider: dominant corrections to the WW-fusion channel

Hahn

Heinemeyer²,

Weiglein

2003

Nuclear Physics B

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In the Minimal Supersymmetric Standard Model (MSSM) we calculate the corrections to neutral CP-even Higgs-boson production in the W W -fusion and Higgsstrahlung channel, e + e − →νν {h, H}, at a future Linear Collider, taking into account all O(α) corrections arising from loops of fermions and sfermions. For the production of the lightest MSSM Higgs boson, h, we find genuine loop corrections (beyond the universal Higgs propagator corrections) of up to −5%. For the heavy CP-even neutral Higgs boson, H, which shows decoupling behavior at tree level, we find nonnegligible corrections that can enhance the cross section considerably in parts of the MSSM parameter space. At a center-of-mass energy of √ s = 1000 GeV, heavy CPeven Higgs-boson masses of up to M H 700 GeV are accessible at the Linear Collider in favorable regions of the MSSM parameter space. * email: hahn@feynarts.de †

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“…Various prescriptions for the renormalisation of the auxiliary variable tan β, with specific virtues and flaws, may be found in the literature, none of which is satisfactory in all respects (for a review, see Ref. [34]). For definiteness, we employ the Dabelstein-Chankowski-Pokorski-Rosiek (DCPR) scheme [35,36], which maintains the relation tan β = v 2 /v 1 in terms of the "true" vacua through the condition δv 1 /v 1 = δv 2 /v 2 , and demands the residue condition …”

Section: Methods Of Calculationmentioning

confidence: 99%

Two-loop electroweak corrections to the and couplings of the CP-odd Higgs boson

Brod¹,

Fugel²,

Kniehl³

2009

Nuclear Physics B

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Using the asymptotic-expansion technique, we compute the dominant two-loop electroweak corrections, of O(G F m 2 t ), to production and decay via a pair of photons or gluons of the CP-odd Higgs boson A 0 in a two-Higgs-doublet model with low-to intermediate values of the Higgs-boson masses and ratio tan β = v 2 /v 1 of the vacuum expectation values. We also study the influence of a sequential heavyfermion generation. The appearance of three γ 5 matrices in closed fermion loops requires special care in the dimensional regularisation of ultraviolet divergences. The finite renormalisation constant for the pseudoscalar current effectively restoring the anticommutativity of the γ 5 matrix, familiar from perturbative quantum chromodynamics, is found not to receive a correction in this order. We also revisit the dominant two-loop electroweak correction to the H → γγ decay width in the standard model with a fourth fermion generation.

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Gauge dependence and renormalization of tan β in the minimal supersymmetric standard model

Cited by 104 publications

References 19 publications

Two-loop contributions of the order O α t α s $$ \mathcal{O}\left({\alpha}_t{\alpha}_s\right) $$ to the masses of the Higgs bosons in the CP-violating NMSSM

Two-loop contributions of the order O α t α s $$ \mathcal{O}\left({\alpha}_t{\alpha}_s\right) $$ to the masses of the Higgs bosons in the CP-violating NMSSM

MSSM Higgs-boson production at the linear collider: dominant corrections to the WW-fusion channel

Two-loop electroweak corrections to the and couplings of the CP-odd Higgs boson

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