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Wuppertal 2015 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 32: Jenseits des Standardmodells 1 (Theorie)

T 32.6: Vortrag

Montag, 9. März 2015, 18:00–18:15, K.12.23 (K1)

(g−2)µ in the MSSM with tanβ→∞ — •Markus Bach1, Jae-hyeon Park2, Dominik Stöckinger1, and Hyejung Stöckinger-Kim11Institut für Kern- und Teilchenphysik, TU Dresden — 2Departament de Física Teòrica and IFIC, Universitat de València-CSIC

We investigate the MSSM for the exotic scenario tanβ→∞ where one of the Higgs doublets does not obtain a vacuum expectation value. This leads to the masses of the down-type fermions being created completely on loop level. The one-loop results for the self energies can be used to calculate the Yukawa couplings which is explicitly done for the muon and utilized to compute the supersymmetric contributions to its anomalous magnetic moment.

We identify the parameter regions in which these contributions are capable of explaining the discrepancy between Standard Model prediction and experimental result. Compared to the usual MSSM, this is possible with higher SUSY masses at the expense of a large muon Yukawa coupling. Other constraints like the metastability of the electroweak vacuum are considered as well.

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