Phenomenology 2018 Symposium

Session

SUSY III

21

8 May 2018, 16:30

G-28 (Benedum Hall)

511. Quasifixed points from scalar sequestering and the little hierarchy problem in supersymmetry

Stephen Martin (Northern Illinois University)

08/05/2018, 16:30

parallel talk

In supersymmetric models with scalar sequestering, superconformal strong dynamics in the hidden sector suppresses the low-energy couplings of mass dimension two, compared to the squares of the dimension one parameters. Taking into account restrictions on the anomalous dimensions in superconformal theories, I point out that the interplay between the hidden and visible sector renormalizations...

468. Singlet Scalar Top Partners from Accidental Supersymmetry

Lingfeng Li Li (University of California, Davis)

08/05/2018, 16:45

parallel talk

We present a model wherein the Higgs mass is protected from the quadratic one-loop top quark corrections by scalar particles that are complete singlets under the Standard Model (SM) gauge group. While bearing some similarity to Folded Supersymmetry, the construction is purely four dimensional and enjoys more parametric freedom, allowing electroweak symmetry breaking to occur easily. The...

447. The Supersymmetric Georgi-Machacek Model

Keping Xie (Southern Methodist University)

08/05/2018, 17:00

parallel talk

We show that the well known Georgi-Machacek (GM) model can be realized as a limit of the recently constructed Supersymmetric Custodial Higgs Triplet Model (SCTM) which in general con- tains a significantly more complex scalar spectrum. We dub this limit of the SCTM, which gives a weakly coupled origin for the GM model at the electroweak scale, the Supersymmetric GM (SGM) model. We derive a...

537. Partial Compositeness and The Fermion/Sfermion Mass Hierarchy

Yusuf Buyukdag, Yusuf Buyukdag (University of Minnesota, Twin Cities)

08/05/2018, 17:15

parallel talk

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...

527. Exploring the supersymmetric U(1)$_{B-L} \times$ U(1)$_{R}$ model with dark matter, muon $g-2$ and $Z^\prime$ mass limits

Mr Ozer Ozdal (Concordia University)

08/05/2018, 17:30

parallel talk

We study the low scale predictions of supersymmetric standard model extended by $U(1)_{B-L}\times U(1)_{R}$ symmetry, obtained from $SO(10)$ breaking via a left-right supersymmetric model, imposing universal boundary conditions. Two singlet Higgs fields are responsible for the radiative $U(1)_{B-L}\times U(1)_{R}$ symmetry breaking, and a singlet fermion $S$ is introduced to generate neutrino...

504. Mass scale of vectorlike matter and superpartners from IR fixed point predictions of gauge and top Yukawa couplings

Navin McGinnis (Indiana University)

08/05/2018, 17:45

parallel talk

We use the IR fixed point predictions for gauge couplings and the top Yukawa coupling in the MSSM extended with vectorlike families to infer the scale of vectorlike matter and superpartners. We present results in detail for the MSSM extended with one complete vectorlike family. We find that for a unified gauge coupling αG>0.3 vectorlike matter or superpartners are expected within 1.7 TeV (2.5...

493. Anomaly Cancellation in Effective Supergravity Theories from the Heterotic String: Two Simple Examples

Jacob Leedom (Lawrence Berkeley National Laboratory)

08/05/2018, 18:00

parallel talk

We use Pauli-Villars regularization to evaluate the conformal and chiral anomalies in the effective field theories from $Z_3$ and $Z_7$ compactifications of the heterotic string without Wilson lines. We show that parameters for Pauli-Villars chiral multiplets can be chosen in such a way that the anomaly is universal in the sense that its coefficient depends only on a single holomorphic...

651. Rare and Eccentric SUSY Signatures

Linda Carpenter (Ohio State University)

08/05/2018, 18:15

parallel talk

The LHC is quickly closing the naturalness window of the MSSM, current limits in parameter space are about to outpace the discovery potential of minimal SUSY models. (For example, current gluino mass bounds are close t to overtaking the highest discoverable mass with 3 inverse atto-barns of data.) As such, I will enumerate and explore the models and phenomenology of still unconstrained SUSY...