All Results

Experimental constraints on nMSSM and implications on its phenomenology

Cao,J; Logan,HE; Yang,JMSubjects:

We examine various direct and indirect experimental constraints on the nearly minimal supersymmetric standard model (nMSSM) and obtain the following observations: (i) The combination of current experiments stringently constrains the parameter space, setti |

submitted time
2016-12-28
Hits*2788*，
Downloads*1610*，
Comment
*0*

Top quark three-body decays in R-violating MSSM

Heng,Z; Lu,G; Wu,L; Yang,JMSubjects:

In the minimal supersymmetric standard model the R-parity violating interactions can trigger various exotic three-body decays for the top quark, which may be accessible at the LHC. In this work we examine the R-violating decays t-> c X_1 X_2, which includ |

submitted time
2016-12-28
Hits*2639*，
Downloads*1545*，
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*0*

Subjects:

We examine the lepton flavor-changing processes in R -parity violating MSSM. First, we update the constraints on the relevant R -violating couplings by using the latest data on the rare decays ? i → ? j γ . We find that the updated constraints are much st |

submitted time
2016-12-28
Hits*2704*，
Downloads*1617*，
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*0*

Subjects:

We examine various direct and indirect constraints on the lepton-specific two-Higgs doublet model and scrutinize the property of the Higgs bosons in the allowed parameter space. These constraints come from the precision electroweak data, the direct search |

submitted time
2016-12-28
Hits*2793*，
Downloads*1651*，
Comment
*0*

Subjects:

The top quark forward-backward asymmetry A_{FB}^{t} measured at the Tevatron is above the Standard Model prediction by more than 2-sigma deviation, which might be a harbinger for new physics. In this work we examine the new physics contribution to A_{FB}^ |

submitted time
2016-12-28
Hits*2157*，
Downloads*1228*，
Comment
*0*

SUSY dark matter in light of CDMS II results: a comparative study for different models

Cao,J; Hikasa,K; Wang,W; Yang,JM; Yu,LSubjects:

We perform a comparative study of the neutralino dark matter scattering on nucleon in three popular supersymmetric models: the minimal (MSSM), the next-to-minimal (NMSSM) and the nearly minimal (nMSSM). First, we give the predictions of the elastic cross |

submitted time
2016-12-28
Hits*2434*，
Downloads*1388*，
Comment
*0*

Dark matter in the MSSM and its singlet extension

Yang,JSubjects:

We briefly review the supersymetric explanation for the cosmic dark matter. Although the neutralino in the minimal supersymmetric model (MSSM), the next-to-minimal supersymmetric model (NMSSM) and the nearly minimal supersymmetric model (nMSSM) can natura |

submitted time
2016-12-28
Hits*1752*，
Downloads*1024*，
Comment
*0*

Subjects:

Assuming the lightest neutralino solely composes the cosmic dark matter, we examine the constraints of the CDMS-II and XENON100 dark matter direct searches on the parameter space of the MSSM Higgs sector. We find that the current CDMS-II/XENON100 limits c |

submitted time
2016-12-28
Hits*2264*，
Downloads*1345*，
Comment
*0*

Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models

Cao,J; Heng,Z; Yang,JMSubjects:

Various new physics models predict a light CP-odd Higgs boson (labeled as aaa) and open up new decay modes for Z-boson, such as Z→f?faZ→f?faZ \to \bar{f} f a, Z→aγZ→aγZ\to a\gamma and Z→aaaZ→aaaZ\to aaa, which could be explored at the GigaZ option of the |

submitted time
2016-12-28
Hits*2002*，
Downloads*1137*，
Comment
*0*

Subjects:

Extensions of the Standard Model often predict new chiral interactions for top quark, which will contribute to top quark spin correlation and polarization in tt?tt?t\bar{t} production at the LHC. In this work, under the constraints from the current Tevatr |

submitted time
2016-12-28
Hits*2362*，
Downloads*1240*，
Comment
*0*