PIKIMO 12

Session

Afternoon Session

30 Apr 2022, 14:00

2. Looking for Dark Matter in Novel Ways

Patrick James Fox

30/04/2022, 14:00

To date dark matter has only revealed itself to us through its gravitational interactions, despite our best efforts to see more direct signals. The increasingly strong constraints on WIMP-like dark matter have led to a proliferation of new models of dark matter. These new models present both challenges and opportunities for discovery of the dark sector. I will present a few examples of dark...

5. A Cosmological Lithium Solution from Discrete Gauged Baryon Minus Lepton Number

Seth Koren

30/04/2022, 14:45

We propose the infrared gauge symmetry of our sector includes an unbroken discrete gauged subgroup of baryon minus lepton number of order 2 x 3 colors x 3 generations = 18, the inclusion of which does not modify local physics. We UV complete this at Λ as the familiar U(1)_{B-NcL} Abelian Higgs theory, and the early universe phase transition forms cosmic strings which are charged under an...

20. New constraints on extended Higgs sectors from the trilinear Higgs coupling

Henning Bahl

30/04/2022, 15:00

The trilinear Higgs coupling λhhh is crucial for determining the structure of the Higgs potential and for probing possible effects of physics beyond the Standard Model (SM). Focusing on the Two-Higgs-Doublet Model as a concrete example, we identify parameter regions in which λhhh is significantly enhanced with respect to the SM. Taking into account all relevant corrections up to the two-loop...

21. Amplitude/Operator Basis from Mathematica

Minglei Xiao

30/04/2022, 15:15

We established a framework to generate the full operator basis for all kinds of effective field theories, including the Standard Model Effective Field Theory and Chiral Perturbation Theories. The construction is based on the correspondence between operators and local on-shell amplitudes. Conversions among various bases are made possible. In this talk, I am going to show the code implementation...

4. High-quality axions in solutions to the $\mu$ problem

Prudhvi Bhattiprolu (University of Michigan)

30/04/2022, 15:30

Solutions to the $\mu$ problem in supersymmetry based on the Kim-Nilles mechanism naturally feature a Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) axion with decay constant of order the geometric mean of the Planck and TeV scales, consistent with astrophysical limits. We investigate minimal models of this type with two gauge-singlet fields that break a Peccei-Quinn symmetry, and extensions with...