Lisa Zeune's Constraining Supersymmetric Models: Using Higgs Physics, PDF

By Lisa Zeune

ISBN-10: 3319222279

ISBN-13: 9783319222271

ISBN-10: 3319222287

ISBN-13: 9783319222288

This thesis analyses how supersymmetric (SUSY) extensions of the normal version (SM) of particle physics might be limited utilizing info from Higgs physics, electroweak precision observables and direct searches for brand new debris. Direct searches for SUSY debris on the LHC haven't ended in any sign thus far, and bounds at the SUSY parameter house were set. Measurements of the houses of the saw Higgs boson at one hundred twenty five GeV in addition to of the W boson mass grants necessary oblique constraints, supplementing those from direct searches. distinct calculations are played for Higgs decays and electroweak precision observables in the minimum supersymmetric extension of the traditional version and the subsequent to-minimal supersymmetric extension of the normal version. moreover, a style is gifted to reinterpret the LHC limits from direct SUSY searches in additional lifelike SUSY situations. The phenomenological effects of these effects are completely analysed.

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Additional info for Constraining Supersymmetric Models: Using Higgs Physics, Precision Observables and Direct Searches

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In this work we use the on-shell scheme for the one-loop calculation in Chap. 5. 1 On-Shell Renormalization Scheme In the on-shell scheme the renormalization constants are fixed by the on-shell renormalization conditions, demanding that the renormalized mass parameters are equal to the real parts of the propagator poles, that the residues of the renormalized propagators are equal to 1 and that e is the elementary charge from Thomson-scattering, resulting in vanishing loop contributions to the eeA vertex on-shell and for zero momentum transfer.

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31) The first term (‘F-term’) comes from Lchiral , the second term (‘D-term’) combines the last term of Eq. 30) and the last term in Eq. 29). It is a peculiarity of supersymmetric models that the scalar potential is given by the Yukawa (F-term) and gauge (D-term) interactions. 1. 9 We will explain below why two Higgs doublets are needed. We follow the convention to define chiral multiplets in terms of left-handed Weyl spinors. That means we regard the right-handed fermions and their superpartners as conjugates of the left-handed fields.

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Constraining Supersymmetric Models: Using Higgs Physics, Precision Observables and Direct Searches by Lisa Zeune

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