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NMSSM From Generalized Mirage Mediation Scenario

Posted on:2018-08-23Degree:MasterType:Thesis
Country:ChinaCandidate:W HuiFull Text:PDF
GTID:2310330515969770Subject:Theoretical Physics
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The Standard Model(SM)Theory unified the strong,weak and electromagnetic interaction.And a large number of precise experiments have proved the success of the standard model theory.With the Higgs boson found on the Large Hadron Collider,the final prediction of the standard model for particles has also been confirmed.There is no doubt that the standard model theory is one of the most perfect theories in particle physics.However,the standard model is not an ultimate theory,there are still many problems in particle physics which can not be solved by standard model theory.For example,the standard model has a large problem in fine tuning;the standard model can not explain why neutrino has quality.In addition,the standard model can not provide candidates for dark matter.Scientists see the standard model as a low-energy theory,and there should be new basic theories in high-energy physics.The low-energy supersymmetric model is an extension of the standard model.The supersymmetric theory(SUSY)can perfectly explain the normative level of the standard model(SM)and provide candidates for dark matter.So it is considered by many physicists to be one of the best candidates for the new physics of the TeV scale.On the other hand,lack of SUSY signals so far besides the higgs boson at the LHC seems to indicate some tensions with the low energy SUSY.This paper is mainly based on the NMSSM From Generalized Mirage Mediation Scenario.Mainly include the following aspects:(1)The breakage of supersymmetric spectroscopy under low energy is inextricably linked to the mechanism of supersymmetric breaking.The need to investigate the relationship between phenomenology and different supersymmetry damage mechanisms;It is well known that anomaly mediation,including its deflected version with messengers,needs an additional mechanism to tackle the ?-B? problem.Such a ?-B? problem can naturally solved in the frame work of next-to-minimal supersymmetry standard model(NMSSM).Besides,the 125 GeV higgs mass caneasily be accommodated in NMSSM with additional tree-level contributions.Such NMSSM spectrum can be generated with a typically generalized modulousanomaly mediation mechanism.(2)Based on our previous works on general messenger-matter interaction in deflected anomaly mediation scenario,we find that the existence of the messenger sector in mirage type mediation may non-trivially contribute to the soft SUSY spectrum.A mixed gauge-modulous contributions could arise.The introduction of deflection in anomaly mediation could be advantageous by relaxing the choice of modular weights for matter fields.(3)In this paper,we propose our model and discuss the general expression for soft SUSY parameters from generalized mirage mediation with gauge deflection.And the soft SUSY parameters for NMSSM are given in our scenario.The analysis and conclusion of the related numerical results are also will be discussed in the article.
Keywords/Search Tags:Mirage Mediation, gauge-modulus interference contributions, NMSSM
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