Threshold corrections to the bottom quark mass revisited

Anandakrishnan, Archana; Bryant, B. Charles; Raby, Stuart

doi:10.1007/jhep05(2015)088

Cited by 8 publications

(6 citation statements)

References 53 publications

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“…[57] in accordance with the recent reanalysis of Ref. [45]. The result is to be compared with the experimental value of m b (M Z ).…”

Section: Sm Fermion Massesmentioning

confidence: 57%

“…Although the CMSSM with YU is an elegant model, it yields unacceptable values of the b-quark mass m b for both signs of µ given the experimental values of the t and τ masses -which, combined with YU, naturally restrict tan β to large values. This is due to the presence of sizable SUSY corrections [42][43][44][45] to the tree-level bquark mass (about 20%), which drive it well above [a little below] its 95% confidence level (c.l.) experimental range for µ > 0 [µ < 0] -we use the standard convention of Ref.…”

Section: Introductionmentioning

confidence: 99%

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Probing the hyperbolic branch/focus point region of the constrained minimal supersymmetric standard model with generalized Yukawa quasiunification

Karagiannakis

Lazarides

Pallis³

2015

Phys. Rev. D

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We analyze the parametric space of the constrained minimal supersymmetric standard model with µ > 0 supplemented by a generalized asymptotic Yukawa coupling quasi-unification condition which yields acceptable masses for the fermions of the third family. We impose constraints from the cold dark matter abundance in the universe and its direct detection experiments, the B-physics, as well as the masses of the sparticles and the lightest neutral CP-even Higgs boson. Fixing the mass of the latter to its central value from the LHC and taking 40 tan β 50, we find a relatively wide allowed parameter space with −11 A0/M 1/2 15 and mass of the lightest sparticle in the range (0.09 − 1.1) TeV. This sparticle is possibly detectable by the present cold dark matter direct search experiments. The required fine-tuning for the electroweak symmetry breaking is much milder than the one needed in the neutralino-stau coannihilation region of the same model.

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“…[57] in accordance with the recent reanalysis of Ref. [45]. The result is to be compared with the experimental value of m b (M Z ).…”

Section: Sm Fermion Massesmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Probing the hyperbolic branch/focus point region of the constrained minimal supersymmetric standard model with generalized Yukawa quasiunification

Karagiannakis

Lazarides

Pallis³

2015

Phys. Rev. D

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“…where P e and P L are threshold corrections due to canonical normalization of external charged lepton fields and 27) JHEP07 (2016)108 with the tan β-enhanced contributions…”

Section: Jhep07(2016)108mentioning

confidence: 99%

“…Various aspects regarding the impact of such GUT relations for phenomenology have been studied in the literature, see e.g. [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] for recent works.…”

Section: Introductionmentioning

confidence: 99%

Predicting the sparticle spectrum from GUTs via SUSY threshold corrections with SusyTC

Antusch

Sluka

2016

J. High Energ. Phys.

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Grand Unified Theories (GUTs) can feature predictions for the ratios of quark and lepton Yukawa couplings at high energy, which can be tested with the increasingly precise results for the fermion masses, given at low energies. To perform such tests, the renormalization group (RG) running has to be performed with sufficient accuracy. In supersymmetric (SUSY) theories, the one-loop threshold corrections (TC) are of particular importance and, since they affect the quark-lepton mass relations, link a given GUT flavour model to the sparticle spectrum. To accurately study such predictions, we extend and generalize various formulas in the literature which are needed for a precision analysis of SUSY flavour GUT models. We introduce the new software tool SusyTC, a major extension to the Mathematica package REAP [1], where these formulas are implemented. SusyTC extends the functionality of REAP by a full inclusion of the (complex) MSSM SUSY sector and a careful calculation of the one-loop SUSY threshold corrections for the full down-type quark, up-type quark and charged lepton Yukawa coupling matrices in the electroweak-unbroken phase. Among other useful features, SusyTC calculates the one-loop corrected pole mass of the charged (or the CP-odd) Higgs boson as well as provides output in SLHA conventions, i.e. the necessary input for external software, e.g. for performing a two-loop Higgs mass calculation. We apply SusyTC to study the predictions for the parameters of the CMSSM (mSUGRA) SUSY scenario from the set of GUT scale Yukawa relations

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“…Coming to the SQCD corrections to ∆m b 4 we have two types of contributions namely, from the b −g and χ ± 1 − t loops [51][52][53][54][55]. Following Ref.…”

Section: Light Charged Higgs Bosons and Flavour Datamentioning

confidence: 99%

Status of the 98–125 GeV Higgs bosons scenario with updated LHC-8 data

et al. 2016

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In the context of minimal supersymmetric standard model (MSSM), we discuss the possibility of the lightest Higgs boson with mass M h = 98 GeV to be consistent with the 2.3σ excess observed at the LEP in the decay mode e + e − → Zh, with h → bb. In the same region of the MSSM parameter space, the heavier Higgs boson (H) with mass M H ∼ 125 GeV is required to be consistent with the latest data on Higgs coupling measurements at the end of 7 + 8 TeV LHC run with 25fb −1 of data. While scanning the MSSM parameter space, we impose constraints coming from flavour physics, relic density of the cold dark matter as well as direct dark matter searches. We study the possibility of observing this light Higgs boson in vector boson fusion process and associated production with W/Z boson at the high luminosity (3000 fb −1 ) run of the 14 TeV LHC. Our analysis shows that this scenario can hardly be ruled out even at the high luminosity run of the LHC. However, the precise measurement of the Higgs signal strength ratios can play a major role to distinguish this scenario from the canonical MSSM one.

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Threshold corrections to the bottom quark mass revisited

Cited by 8 publications

References 53 publications

Probing the hyperbolic branch/focus point region of the constrained minimal supersymmetric standard model with generalized Yukawa quasiunification

Probing the hyperbolic branch/focus point region of the constrained minimal supersymmetric standard model with generalized Yukawa quasiunification

Predicting the sparticle spectrum from GUTs via SUSY threshold corrections with SusyTC

Status of the 98–125 GeV Higgs bosons scenario with updated LHC-8 data

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