The parameter $\epsilon_K$ measures $CP$ violation in the neutral kaon
system. It is a sensitive probe of new physics and plays a prominent
role in the global fit of the Cabibbo-Kobabyashi-Maskawa matrix. The
perturbative theory uncertainty is currently dominated by the
top-quark contribution. In this talk I will present the calculation of the full
two-loop electroweak corrections to the...
The Higgs boson may be regarded as, on the one hand, the capstone of the glorious arch of the SM or, on the other hand, as the portal giving access to new physics. An open question in particle physics is whether the Higgs mechanism generates the masses of all the fermions by the Yukawa interactions. We propose to study multi-boson production processes and scrutinize the muon Yukawa coupling at...
In this talk, we will review recent deep learning strategies, and talk about the progression of deep learning embeddings of data. We then follow with this by talking about recent work on supervised and weak supervised learning approaches and how they can play an integral role in next generation physics searches. Finally, we will comment briefly on recent experimental trends at the LHC, and how...
A novel implementation of boosted decision trees on FPGA is presented as a case study for use in a real-time trigger system at the LHC and HL-LHC. An example case of vector boson fusion production of the Higgs boson followed by its hypothetical decay into invisible or soft final states is considered. Comparison of hardware performance is made with respect to hls4ml's boosted decision trees as...
Axions, periodic pseudo-scalars, enjoy a wide range of phenomenological applications, from solving the strong CP problem to providing DM and inflaton candidates. Justifiably, they have been the subject of prolonged theoretical interest, which has intensified over the past few years. In this talk, I will discuss several fun developments in axion models and probes, including: a recently...
We initiate a systematic study of precision calculation of the inflation correlators at the 1-loop level, starting in this paper with bosonic 1-loop bispectrum with chemical-potential enhancement. Such 1-loop processes could lead to important cosmological collider observables but are notoriously difficult to compute due to the lack of symmetries. We attack the problem from a direct numerical...
Hidden naturalness offers an exciting framework for alleviating the Higgs hierarchy problem. However, since the models within this framework face few constraints from collider searches, there is strong motivation to study their cosmological signatures, an area that has remained mostly unexplored. One of the simplest models that can be studied in this framework is the mirror twin Higgs (MTH)...
Dark radiation (DR) appears as a new physics candidate in various scenarios beyond the Standard Model. While it is often assumed that perturbations in DR are adiabatic, they can easily have an isocurvature component if more than one field was present during inflation, and whose decay products did not all thermalize with each other. In this talk, I will discuss the constraints on both...
Parameter space near the Planck mass (~10$^{19}$GeV/c$^2$) remains relatively unexplored, while many interesting heavy particle dark matter models exist. Multiply-interacting massive particles (MIMPs) are heavy dark matter particles that interact heavily with regular matter but may have evaded detection due to the low number density required to make up the local dark matter halo. These...
Weak-scale secluded sector dark matter can reproduce the observed dark matter relic density with thermal freeze-out within that sector. If nature is supersymmetric, three portals to the visible sector - a gauge portal, a Higgs portal, and a gaugino portal - are present. We present gamma ray spectra relevant for indirect detection of dark matter annihilation in such setups. Since symmetries in...
In this talk we present the impact of top quark--mass suppressed terms on the
real-virtual and real-real NNLO corrections to the total partonic production cross section of a pair of Higgs bosons in gluon fusion.