Split sfermion families, Yukawa unification and muon g − 2

Ajaib, Muhammad Adeel; Gogoladze, Ilia; Shafi, Qaisar; Ün, Cem Salih

doi:10.1007/jhep05(2014)079

Cited by 34 publications

(21 citation statements)

References 72 publications

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“…Additional complications also arise due to tensions with the (g − 2) µ observable in this regime, where the theoretical prediction is too small to match the experimental value. More recently, viable models with µ < 0 have been constructed but they typically have squark masses greater than 1 TeV [30][31][32].…”

Section: Jhep05(2015)088mentioning

confidence: 99%

Threshold corrections to the bottom quark mass revisited

Anandakrishnan

Bryant

Raby

2015

J. High Energ. Phys.

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Threshold corrections to the bottom quark mass are often estimated under the approximation that tan β enhanced contributions are the most dominant. In this work we revisit this common approximation made to the estimation of the supersymmetric threshold corrections to the bottom quark mass. We calculate the full one-loop supersymmetric corrections to the bottom quark mass and survey a large part of the phenomenological MSSM parameter space to study the validity of considering only the tan β enhanced corrections. Our analysis demonstrates that this approximation underestimates the size of the threshold corrections by ∼12.5% for most of the considered parameter space. We discuss the consequences for fitting the bottom quark mass and for the effective couplings to Higgses. We find that it is important to consider the additional contributions when fitting the bottom quark mass but the modifications to the effective Higgs couplings are typically O(few)% for the majority of the parameter space considered.

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Section: Jhep05(2015)088mentioning

confidence: 99%

Threshold corrections to the bottom quark mass revisited

Anandakrishnan

Bryant

Raby

2015

J. High Energ. Phys.

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“…This is certainly being tested at the LHC. In a different scenario also with t−b−τ YU but non-universal gaugino masses [7], the colored sparticles lie in the multi-TeV range, while the scalar partners of the leptons are significantly lighter with some also contributing in an essential way to the muon anomalous magnetic moment [8].…”

Section: Introductionmentioning

confidence: 99%

Masses of third family vectorlike quarks and leptons in Yukawa-unifiedE6

2016

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In supersymmetric E 6 the masses of the third family quarks and charged lepton, t − b − τ , as well as the masses of the vector-like quarks and leptons, D −D and L−L, may arise from the coupling 27 3 ×27 3 ×27 H , where 27 3 and 27 H denote the third family matter and Higgs multiplets respectively. We assume that the SO(10) singlet component in 27 H acquires a TeV scale VEV which spontaneously breaks U (1) ψ and provides masses to the vector-like particles in 27 3 , while the MSSM doublets in 27 H provide masses to t, b and τ . Imposing Yukawa coupling unification h t = h b = h τ = h D = h L at M GU T and employing the ATLAS and CMS constraints on the Z ψ boson mass, we estimate the lower bounds on the third family vector-like particles D −D and L −L masses to be around 5.85 TeV and 2.9 TeV respectively. These bounds apply in the supersymmetric limit.

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“…Recently, there have been several attempts to reconcile this apparent tension between muon g − 2 and the Higgs boson mass within the MSSM framework by assuming non-universal SSB mass terms for the gauginos [13,14] or the sfermions [15,16] at the GUT scale. Indeed, a simultaneous explanation of m h and muon g − 2 is possible [17] in the presence of t − b − τ Yukawa coupling unification condition [18]. It has been shown [19] that constraints from FCNC processes are very mild and easily satisfied for the case in which the third generation sfermion masses are split from those of the first two generations.…”

Section: Introductionmentioning

confidence: 99%

GUT-inspired supersymmetric model forh→γγand the muong−2

Ajaib¹,

Gogoladze²,

Shafi³

2015

Phys. Rev. D

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We study a GUT-inspired supersymmetric model with non-universal gaugino masses that can explain the observed muon g − 2 anomaly while simultaneously accommodating an enhancement or suppression in the h → γγ decay channel. In order to accommodate these observations and m h 125 − 126 GeV, the model requires a spectrum consisting of relatively light sleptons whereas the colored sparticles are heavy. The predicted stau mass range corresponding to R γγ ≥ 1.1 is 100 GeV mτ 200 GeV. The constraint on the slepton masses, particularly on the smuons, arising from considerations of muon g − 2 is somewhat milder. The slepton masses in this case are predicted to lie in the few hundred GeV range. The colored sparticles turn out to be considerably heavier with mg 4.5 TeV and mt 1 3.5 TeV, which makes it challenging for these to be observed at the 14 TeV LHC.

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Split sfermion families, Yukawa unification and muon g − 2

Cited by 34 publications

References 72 publications

Threshold corrections to the bottom quark mass revisited

Threshold corrections to the bottom quark mass revisited

Masses of third family vectorlike quarks and leptons in Yukawa-unifiedE6

GUT-inspired supersymmetric model forh→γγand the muong−2

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