● Exploring the hadronic landscape, from model dependent to independent searches

2024/3/21 and 16:00~17:30

Link: https://indico.kias.re.kr/event/275/

Speaker: Dr. Anthony Badea

Abstract: Searches for beyond the Standard Model (BSM) physics is in an exciting period of time. Years of searches at the LHC and other experiments are producing increasingly stringent bounds on the most theoretically appealing models. This has led to a paradigm shift in the LHC program towards more signature-based rather than model-based searches. The archetype of this approach is the search for an excess in the di-object mass spectrum, which has provided a fruitful history of discoveries, from the J/ψ meson to the Higgs boson. This approach is restricted to models with resonant production of a single particle, from which all the final-state objects are assumed to originate. However, many BSM models lead to non-resonant pair production which faces the additional challenge of assigning the decay products to parent particles in order to reconstruct masses. This challenge is further exacerbated in decays to high-multiplicity final states. We’ll discuss the compelling developments and experimental results to use machine learning to tackle this problem in model dependent and independent ways.

● Probing Dark Matter with Gravitational-Wave Interferometers in Space

2024/5/02 and 14:00~15:30

Link: https://indico.kias.re.kr/event/297/

Speaker: Prof. Yong Tang

Abstract: The discovery of gravitational waves has opened a new window for exploring the universe. The talk will discuss the use of gravitational wave observations for searching and detecting dark matter. It will focus on two types of dark matter candidates, WIMPs and ultra-light dark matter. The former can form dark matter spikes around black holes, affecting the motion of compact astrophysical objects through dynamical friction effects, thereby altering the gravitational waveforms emitted by the system, potentially observable by space-based gravitational wave experiments. Ultra-light dark matter can directly interact with detectors, influencing detection signals, and can also be probed through gravitational wave experiments.

● Amplitudes Meet Cosmology: From Inflation to the Large-Scale Structure

2024/5/23 and 14:00~15:30

link : https://indico.kias.re.kr/event/299/

Speaker: Dr. Hayden Lee

Abstract : The physics of the early universe is encoded in cosmological correlators. Recent years have seen substantial progress in their study, fueled by a new approach called the cosmological bootstrap. In this approach, cosmological correlators are directly determined from basic physical principles such as locality, unitarity, and symmetry, bypassing the intricacies of the Lagrangian formalism and Feynman diagrams. Key to this advancement is the integration with insights from high energy physics, especially the modern study of scattering amplitudes. In this talk, I will provide an overview of this cosmological bootstrap program and highlight some of the latest developments, spanning from inflation to the large-scale structure.

● Quantum simulation of parton shower with kinematics

2024/5/28 and 10:30 ~ 12:00 PM

Link : https://indico.kias.re.kr/event/300/

Speaker: Dr. So Chigusa

Abstract : Parton shower is a classical probabilistic algorithm that enables us to simulate multi-emission processes, resumming large logarithms. However, if we consider a non-trivial flavor structure, the quantum interference effect plays an important role, which cannot be taken into account by the classical parton shower. In this talk, I show a quantum simulation algorithm of parton shower, which reproduces the full quantum interference in the event and allows to include kinematical effects. By evaluating and comparing computational efforts of cross section calculation in classical and quantum approaches, I reveal the usefulness of quantum computation in the current problem. Also, focusing on a toy model of a flavored dark sector, I show a possible phenomenological impact of the quantum interference effect. This talk is based on arXiv: 2204.12500 and 2310.19881.

● New era in dark matter searches,  the dawn of the (nuclear) clocks

Monday Jun 3, 2024, 4:00 PM → 5:30 PM Asia/Seoul

Link : https://indico.kias.re.kr/event/311/

Speaker:  Dr. Gilad Perez

Abstract : TBA