Particle Physics on the Plains​ 2018

Session

Beyond the Standard Model I

13 Oct 2018, 14:00

1160 Integrated Science Building (University of Kansas)

9. Partial Compositeness and The Fermion/Sfermion Mass Hierarchy

Yusuf Buyukdag (University of Minnesota, Twin Cities)

13/10/2018, 14:00

The fermion mass hierarchy does not have an explanation in the Standard Model (SM). Moreover, an inverted hierarchy of the sfermion masses is suggested by the constraints from LHC data. To explain these known and expected hierarchies, we consider a supersymmetric model that uses partial-compositeness. The Higgs and third-generation matter superfields are elementary while the first two matter...

8. Split-Supersymmetry in AdS$_5$

Andrew Miller (University of Minnesota)

13/10/2018, 14:20

Supersymmetric models are subject both to direct constraints from collider searches and to indirect limits from electroweak observables such as the Higgs mass and flavor-changing processes. A minimal scenario consistent with current experimental data suggests a supersymmetric spectrum with a split sfermion sector. Such a spectrum can naturally be realized when supersymmetry is broken in a...

20. Dark Energy Constraints from Expansion Rate and Density Fluctuation Data

Joseph Ryan (Kansas State University)

13/10/2018, 14:40

We present best-fit constraints on three different dark energy models. We analyzed 31 measurements of the Hubble expansion rate, as well as 11 distance measurements scaled to the sound horizon set by baryon acoustic oscillations. Our analysis finds that the data favor a slightly closed Lambda-CDM model (as opposed to the conventional flat Lambda-CDM model), although not above the 1-sigma level.

6. Lepton flavor violation induced by a neutral scalar at future lepton colliders

Dr Yongchao Zhang

13/10/2018, 15:00

Many new physics scenarios beyond the Standard Model often necessitate the existence of a (light) neutral scalar H, which might couple to the charged leptons in a flavor violating way, while evading all existing constraints. Such scalars could be effectively produced at future lepton colliders like CEPC, ILC, FCC-ee and CLIC, either on-shell or off-shell, and induce lepton flavor violating...