Flavor violating leptonic decays of the Higgs boson

Fathy, Seham; Ibrahim, Tarek; Itani, Ahmad; Nath, Pran

doi:10.1103/physrevd.94.115029

Cited by 5 publications

(4 citation statements)

References 69 publications

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“…Besides (g −2) µ , it has been for instance pointed out that VL colored sparticles provide extra contributions to the Higgs boson mass [38][39][40][41][42][43], that VL quarks could possibly explain [44] the recently emerged ttH anomaly [45], and that VL superfields might ameliorate to some extent the fine tuning associated with large stops with respect to the MSSM [46]. On the observational side, it has been shown that signatures of extra VL matter can be tested in the next generation of experiments probing lepton flavor violating decays [47], electric and chromoelectric dipole moments [48,49], flavor violating Higgs decays [50] and rare meson decays.…”

Section: Contentsmentioning

confidence: 99%

Muon g − 2 and related phenomenology in constrained vector-like extensions of the MSSM

Choudhury

Roszkowski

Sessolo

et al. 2017

J. High Energ. Phys.

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We analyze two minimal supersymmetric constrained models with low-energy vector-like matter preserving gauge coupling unification. In one we add to the MSSM spectrum a pair 5 +5 of SU (5), in the other a pair 10 + 10. We show that the muon g − 2 anomaly can be explained in these models while retaining perturbativity up to the unification scale, satisfying electroweak and flavor precision tests and current LHC data. We examine also some related phenomenological features of the models, including Higgs mass, fine-tuning, dark matter and several LHC signatures. We stress that, at least for the 5 +5 model, the parameter space consistent with g − 2 is entirely in reach of the LHC with a moderate increase in luminosity with respect to the current data set.

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Section: Contentsmentioning

confidence: 99%

Muon g − 2 and related phenomenology in constrained vector-like extensions of the MSSM

Choudhury

Roszkowski

Sessolo

et al. 2017

J. High Energ. Phys.

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“…Even though the experimental observations and constraints from the Higgs boson searches (see, for instance, ) point a need for new physics, and the observations can be accommodated in SUSY GUTs [76][77][78][79][80][81][82][83][84], absence of a direct signal in the experiments brings a strong impact in searches for the new physics. As is a hadron collider, the LHC results are quite effective, especially on new colored particles such as gluino and stop in the SUSY models.…”

Section: Introductionmentioning

confidence: 99%

Stop search in SUSY SO(10) GUTs with nonuniversal Gaugino masses

et al. 2020

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We explore the stop mass and its possible probe through a set of three different signal processes within a class of SUSY GUTs with non-universal gaugino masses. The stop mass can be realized in a wide range (0.4-8 TeV) consistent with the current experimental constraints. We consider the decay processes;t 1 → tχ 0 1 ,t 1 → bW ±χ 0 1 andt 1 → bqq χ 0 1 to be possible signals, and explore the impact of the current experimental results as well as the possible mass scales of stop, which can be probed in the future collider experiments. We find that the first and third signal processes can be tested in the current experiments, and significantly probed in future, while the second signal process is not available for the current experiments in this class of SUSY GUTs. We also comment that the second signal process can be available to be tested when the collider experiments are conducted at high center of mass energies and luminosity.

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“…The flavor violating decays of the Higgs boson offer another window to the discovery of new physics. In a previous work we analyzed the flavor violating Higgs decays into leptons using an extension of MSSM with a vector like leptonic generation [15]. Experimental limits on such decays exist from the ATLAS [16] and from the CMS [17] Collaborations.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental limits on such decays exist from the ATLAS [16] and from the CMS [17] Collaborations. In [15]. it was shown that in the extended MSSM model one could achieve up to O(1)% branching ratio for the flavor violating leptonic decay h 0 → τ µ.…”

Section: Introductionmentioning

confidence: 99%

Flavor violating top decays and flavor violating quark decays of the Higgs boson

Ibrahim

Itani

Nath

et al. 2017

Int. J. Mod. Phys. A

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In the standard model flavor violating decays of the top quark and of the Higgs boson are highly suppressed. Further, the flavor violating decays of the top and of the Higgs are also small in MSSM and not observable in current or in near future experiment. In this work we show that much larger branching ratios for these decays can be achieved in an extended MSSM model with an additional vector like quark generation. Specifically we show that in the extended model one can achieve branching ratios for t → h 0 c and t → h 0 u as large as the current experimental upper limits given by the ATLAS and the CMS Collaborations. We also analyze the flavor violating quark decay of the Higgs boson, i.e., h 0 → bs +bs and h 0 → bd +bd. Here again one finds that the branching ratio for these decays can be as large as O(1)%. The analysis is done with inclusion of the CP phases in the Higgs sector, and the effect of CP phases on the branching ratios is investigated. Specifically the Higgs sector spectrum and mixings are computed involving quarks and mirror quarks, squarks and mirror squarks in the loops consistent with the Higgs boson mass constraint. The resulting effective Lagrangian with inclusion of the vector like quark generation induce flavor violating decays at the tree level. The test of the branching ratios predicted could come with further data from LHC13 and such branching ratios could also be accessible at future colliders such as the Higgs factories where the Higgs couplings to fermions will be determined with greater precision.

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Flavor violating leptonic decays of the Higgs boson

Cited by 5 publications

References 69 publications

Muon g − 2 and related phenomenology in constrained vector-like extensions of the MSSM

Muon g − 2 and related phenomenology in constrained vector-like extensions of the MSSM

Stop search in SUSY SO(10) GUTs with nonuniversal Gaugino masses

Flavor violating top decays and flavor violating quark decays of the Higgs boson

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