arXiv subjects

Anas Zorik

Publications and source records attributed to Anas Zorik.

4 recordsLinked to original sources

arXiv2026

Higgs Mass and CP violating Phases Implications on the SUSY Breaking Scale in MSSM

The large Higgs mass $m_h \approx 125 GeV$ can raise the values of the SUSY breaking parameters in the Minimal Supersymmetric Standard Model MSSM to the range of several TeV scale. The CP violating phases in the MSSM can induce EDMs of the fermions in the theory already in conflict with the current experimental upper limit unless the masses of the SUSY partners are on the heavy side. We invistigate the implications of both constraints, the Higgs Mass and the complete set of SUSY CP violating phases in the analysis of the electric dipole moments EDMs on the SUSY breaking parameters and thus on the SUSY mass spectrum. We use the electric dipole moments of the electron, the neutron and the proton as our probes in this study.

hep-ph↗

arXiv2017

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

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 $t\to h^0 c$ and $t\to h^0 u$ 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., $h^0\to b\bar s + \bar b s$ and $h^0\to b\bar d + \bar b d$. 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.

hep-ph↗

arXiv2016

The Higgs boson mass constraint and the CP even-CP odd Higgs boson mixing in an MSSM extension

One loop contributions to the CP even-CP odd Higgs boson mixings arising from contributions due to exchange of a vectorlike multiplet are computed under the Higgs boson mass constraint. The vectorlike multiplet consists of a fourth generation of quarks and a mirror generation. This sector brings in new CP phases which can be large consistent with EDM constraints. In this work we compute the contributions from the exchange of quarks and mirror quarks $t_{4L}, t_{4R}, T_{L}, T_{R}$, and their scalar partners, the squarks and the mirror squarks. The effect of their contributions to the Higgs boson masses and mixings are computed and analyzed. The possibility of measuring the effects of mixing of CP even and CP odd Higgs in experiment is discussed. It is shown that the branching ratios of the Higgs bosons into fermion pairs are sensitive to new physics and specifically to CP phases.

hep-ph↗

arXiv2015

Chromoelectric Dipole Moments of Quarks in MSSM Extensions

An analysis is given of the chromoelectric dipole moment of quarks and of the neutron in an MSSM extension where the matter sector contains an extra vectorlike generation of quarks and mirror quarks. The analysis includes contributions to the CEDM from the exchange of the $W$ and the $Z$ bosons, from the exchange of charginos and neutralinos and the gluino. Their contribution to the EDM of quarks is investigated. The interference between the MSSM sector and the new sector with vectorlike quarks is investigated. It is shown that inclusion of the vectorlike quarks can modify the quark EDMs in a significant way. Further, this interference also provides a probe of the vectorlike quark sector. These results are of interest as in the future measurements on the neutron EDM could see an improvement up to two orders of magnitude over the current experimental limits and provide a window to new physics beyond the standard model.

hep-ph↗