Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： 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
Peer Review Status:
Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： 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
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： 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
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： 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}^
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： 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
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： The anomaly of the top quark forward-backward asymmetry AtFBAFBtA^t_{FB} observed at the Tevatron can be explained by the t-channel exchange of a neutral gauge boson (Z') which has sizable flavor changing coupling for top and up quarks. This gauge boson c
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： As a top quark factory, the LHC can test the new physics models used to explain the top quark forward-backward asymmetry A^t_FB measured at the Tevatron. In this work we perform a comparative study for two such models: the W'-model and the color triplet d
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： In order to explain the Tevatron anomaly of the top quark forward-backward asymmetry AtFBAFBtA_{FB}^t in the left-right twin Higgs model, we choose to give up the lightest neutral particle of h^h^\hat{h} field as a stable dark matter candidate. Then a new
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： In a topcolor-assisted technicolor model (TC2) with large FCNC top quark couplings, we study its correlated contributions to the top quark forward–backward asymmetry ( AFB ) at the Tevatron, the top charge asymmetry ( AC ) and the triple-top production at
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： We consider the natural supersymmetry scenario in the framework of the R-parity conserving minimal supersymmetric standard model (called natural MSSM) and examine the observability of stop pair production at the LHC. We first scan the parameters of this s
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： Inspired by the recent LHC Higgs data and null search results of supersymmetry (SUSY), we scan the parameter space of the Minimal Supersymmetric Standard Model (MSSM) with relatively heavy sparticles (1-3 TeV). Then in the parameter space allowed by curre
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： The excess of top quark forward-backward asymmetry (AtFBAFBtA^t_{FB}) reported by the Tevatron and the enhancement of the Higgs decay to diphoton observed by the LHC may point to a same origin of new physics. In this note we examined such anomalies in the
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： In light of recent remarkable progress in Higgs search at the LHC, we study the rare decay process h→Zγh→Zγh \to Z\gamma and show its correlation with the decay h→γγh→γγh \to \gamma\gamma in low energy SUSY models such as CMSSM, MSSM, NMSSM and nMSSM. Und
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： We consider the current experimental constraints on the parameter space of the MSSM and NMSSM. Then in the allowed parameter space we examine the Higgs pair production at the 14 TeV LHC via bb?→hhbb?→hhb\bar{b}\to hh (hhh is the 125 GeV SM-like Higg boson
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： Motivated by the recent progress of direct search for the productions of stop pair and sbottom pair at the LHC, we examine the constraints of the search results on the stop (t~1t~1\tilde{t}_1) mass in natural SUSY. We first scan the parameter space of nat
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： We investigate a strategy to search for light, nearly degenerate higgsinos within the natural MSSM at the LHC. We demonstrate that the higgsino mass range μμ\mu in 100?150100?150100-150 GeV, which is preferred by the naturalness, can be probed at 2σ2σ2\si
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： In SUSY, a light dark matter is usually accompanied by light scalars to achieve the correct relic density, which opens new decay channels of the SM like Higgs boson. Under current experimental constraints including the latest LHC Higgs data and the dark m
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： Motivated by the future precision test of the Higgs boson at an e+e?e+e?e^+e^- Higgs factory, we calculate the production e+e?→ZHγe+e?→ZHγe^+e^- \to ZH\gamma in the Standard Model with complete next-to-leading order electroweak corrections. We find that f
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： In light of the Higgs discovery and the nonobservation of sparticles at the LHC, we revisit the supersymmetric theory (SUSY) induced top quark flavor-changing decay into the Higgs boson. We perform a scan over the relevant SUSY parameter space by consider
Peer Review Status:Awaiting Review
Subjects: Physics Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-12-28
Abstract： In some supersymmetric models like split supersymmetry or models with nonuniversal gaugino mass, ‘bino [lightest sparticle (LSP)] and wino [next-to-lightest sparticle (NLSP)] may have rather small mass splitting in order to provide the correct dark matter
Peer Review Status:Awaiting Review
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