Theory Seminar

Confining Hidden Sectors at LHC and Beyond

I will describe my research program on searches for confining hidden sectors at the GeV scale. I will focus on a collider object we have termed Emerging Jets, which can arise when there is a confining dark sector connected to the Standard Model by a …

Light dark matter and implications for structure formation

In this seminar, I will present the initial motivations to explore sub-GeV dark matter particles and go through some of the current constraints on these scenarios. I will discuss the implications on structure formation and present a new method to …

Heavy quark decays: Gate to new physics?

Transitions between quarks of different fermion generations are governed by small parameters of the Standard Model. Precision studies of decays of the heavy bottom quark, which are currently underway at LHCb, CMS, ATLAS, and Belle II, may reveal …

Accelerated light dark matter

Light dark matter particles (MeV range) carry too little energy to be seen with current dark matter detectors. Considerable efforts are being spent on lowering the energy thresholds for detection. I will show that these models can be successfully …

Parity Solution to the Strong CP Problem and its Experimental Tests

In theories where Parity (P) is a spontaneously broken symmetry, the strong CP problem can be solved by P symmetry alone, without the need for an axion. In this talk I shall elaborate on this proposal and present left-right symmetric theories which …

Some Ruminations On The Interplay Between Bayesian Inference and Machine Learning

The diversity of concepts, terminologies, and interpretations in the broader machine learning community make it difficult to narrow down exactly what machine learning is, let alone compare it to more formal notions of learning like Bayesian …

Spin-Dependent Dark Matter-Electron Interactions

Direct searches of sub-GeV dark matter (DM) through its scattering with electrons have attracted lots of attention in recent years. Stringent exclusion limits placed on the spin-independent interactions are reported, and will be improved in …

Minimal Entanglement and Emerging Symmetries in Low-energy QCD

We study low-energy scatterings of spin-1/2 baryons from the perspective of quantum information science, focusing on the correlation between entanglement minimization and the appearance of accidental symmetries. Interactions of the octet baryons …

The new frontiers of Composite Higgs models at current and future colliders

Composite Higgs models offer a valid alternative to the Standard Model Higgs sector, where the electroweak symmetry breaking is explained naturally by non-perturbative dynamics. They also offer rich phenomenology that can be explored at the LHC and, …

A Tale with Precision

The role of precision tests of the Standard Model is reviewed. Historically, they were key in establishing the theory and to verify its renormalizable structure, as well as the presence of radiative corrections. Today the emphasis has shifted to the …