Higgs and sparticle spectroscopy with Gauge-Yukawa unification

Gogoladze, Ilia; Khalid, Rizwan; Raza, Shabbar; Shafi, Qaisar

doi:10.1007/jhep06(2011)117

Cited by 53 publications

(59 citation statements)

References 67 publications

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“…Many groups have explored t−b−τ Yukawa unification (YU) in SUSY theories [6,7,8,9,10,11,12,13]. It has been found that, for µ > 0, YU can occur at the few percent level in either the Higgs splitting (HS) model or the DR3 model (D-term splitting, right-hand neutrino effects and third generation splitting), provided that the GUT scale soft SUSY breaking (SSB) terms are related as …”

Section: Introductionmentioning

confidence: 99%

Yukawa-unified natural supersymmetry

Baer

Kraml

Kulkarni

2012

J. High Energ. Phys.

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Previous work on t − b − τ Yukawa-unified supersymmetry, as expected from SUSY GUT theories based on the gauge group SO(10), tended to have exceedingly large electroweak fine-tuning (EWFT). Here, we examine supersymmetric models where we simultaneously require low EWFT ("natural SUSY") and a high degree of Yukawa coupling unification, along with a light Higgs scalar with m h ∼ 125 GeV. As Yukawa unification requires large tan β ∼ 50, while EWFT requires rather light third generation squarks and low µ ≈ 100 − 250 GeV, B-physics constraints from BR(B → X s γ) and BR(B s → µ + µ − ) can be severe. We are able to find models with EWFT ∆ 50 − 100 (better than 1-2% EWFT) and with Yukawa unification as low as R yuk ∼ 1.3 (30% unification) if B-physics constraints are imposed. This may be improved to R yuk ∼ 1.2 if additional small flavor violating terms conspire to improve accord with B-constraints. We present several Yukawa-unified natural SUSY (YUNS) benchmark points. LHC searches will be able to access gluinos in the lower 1 − 2 TeV portion of their predicted mass range although much of YUNS parameter space may lie beyond LHC14 reach. If heavy Higgs bosons can be accessed at a high rate, then the rare H, A → µ + µ − decay might allow a determination of tan β ∼ 50 as predicted by YUNS models. Finally, the predicted light higgsinos should be accessible to a linear e + e − collider with √ s ∼ 0.5 TeV.

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Section: Introductionmentioning

confidence: 99%

Yukawa-unified natural supersymmetry

Baer

Kraml

Kulkarni

2012

J. High Energ. Phys.

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“…The second class of SO (10) ), whereas the gaugino SSB masses are non-universal at M GUT [32][33][34][35]. In this scenario the desired supersymmetric threshold corrections to t-b-τ Yukawa couplings can be realized with Mg mb [12][13][14][15][16][17].…”

Section: Jhep05(2014)079mentioning

confidence: 99%

Split sfermion families, Yukawa unification and muon g − 2

Ajaib

Gogoladze

Shafi

et al. 2014

J. High Energ. Phys.

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We consider two distinct classes of Yukawa unified supersymmetric SO(10) models with non-universal and universal soft supersymmetry breaking (SSB) gaugino masses at M GUT . In both cases, we assume that the third family SSB sfermion masses at M GUT are different from the corresponding sfermion masses of the first two families (which are equal). For the SO(10) model with essentially arbitrary (non-universal) gaugino masses at M GUT , it is shown that t-b-τ Yukawa coupling unification is compatible, among other things, with the 125 GeV Higgs boson mass, the WMAP relic dark matter density, and with the resolution of the apparent muon g − 2 anomaly. The colored sparticles in this case all turn out to be quite heavy, of order 5 TeV or more, but the sleptons (smuon and stau) can be very light, of order 200 GeV or so. For the SO(10) model with universal gaugino masses and NUHM2 boundary conditions, the muon g − 2 anomaly cannot be resolved. However, the gluino in this class of models is not too heavy, 3 TeV, and therefore may be found at the LHC.

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“…Finally, we employ the current central value for the top quark mass, m t = 173.3 GeV. Our results are not too sensitive to one or two sigma variation of m t [29].…”

Section: Scanning Procedures and Experimental Constraintsmentioning

confidence: 97%

Reconciling the muong−2, a 125 GeV Higgs boson, and dark matter in gauge mediation models

2015

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We present a class of models in the framework of gauge mediation supersymmetry breaking where the standard model is supplemented by additional U(1) symmetry which acts only on the third generation fermions. The messenger fields carry nontrivial U(1) charge and are vector-like particles under this symmetry. This leads to additional contribution to the soft supersymmetry breaking mass terms for the third generation squarks and sleptons. In this framework we show that the muon g − 2 anomaly, the observed 125 GeV Higgs boson mass and the detected relic dark matter abundance (gravitino in our case) can be simultaneously accommodated. The resolution of the muon g − 2 anomaly, in particular, yields the result that the first two generation squark masses, as well the gluino mass, should be 2.5 TeV, which will be tested at LHC14.

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Higgs and sparticle spectroscopy with Gauge-Yukawa unification

Cited by 53 publications

References 67 publications

Yukawa-unified natural supersymmetry

Yukawa-unified natural supersymmetry

Split sfermion families, Yukawa unification and muon g − 2

Reconciling the muong−2, a 125 GeV Higgs boson, and dark matter in gauge mediation models

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