Recent & Upcoming Events

2024

The role of dark matter in supermassive black hole mergers
Increasing evidence for a stochastic gravitational background is being collected at pulsar timing arrays. The most plausible origin of …
Nov 6, 2024 10:00 AM China Standard Time
BiliBili Youtube
The role of dark matter in supermassive black hole mergers
Quantum Entanglement in the Large Hadron Collider
Recently there has been a growing interest in the measurements of quantum properties with collider experiments, and the ATLAS …
Oct 9, 2024 2:00 PM China Standard Time
BiliBili Youtube
Quantum Entanglement in the Large Hadron Collider
FOEWPT, THCs and GWs in the 2HDM
The baryon assymmetry of the universe gives indications for a First Order Electroweak Phase Transistion (FOEWPT) in the early universe. …
May 22, 2024 3:00 PM China Standard Time
PDF BiliBili Youtube
FOEWPT, THCs and GWs in the 2HDM
Using gravitational waves to see the early Universe
Gravitational waves are a unique probe of the early Universe, as the Universe is transparent to gravitational radiation right back to …
May 8, 2024 4:00 PM China Standard Time
PDF BiliBili Youtube
Using gravitational waves to see the early Universe
The Physics of Dark Glueballs
Hidden sectors featuring confining gauge theories, commonly called hidden valleys, are a highly motivated possibility for new physics. …
Apr 24, 2024 10:00 AM China Standard Time
The Physics of Dark Glueballs
Phenomenology of Axion Decay into Photons
Axions and axion-like particles couple to photons through a distinctive two-photon vertex. This vertex allows for axion decay into two …
Apr 17, 2024 3:00 PM China Standard Time
BiliBili Youtube
Phenomenology of Axion Decay into Photons
Roadmap of Particle Physics in the Next Decade
With the milestone discovery of the Higgs boson at the LHC, high energy physics has entered a new era. The completion of the …
Mar 13, 2024 10:00 AM China Standard Time
PDF BiliBili Youtube
Roadmap of Particle Physics in the Next Decade
A neutrino floor for the Migdal effect
Neutrino-nucleus scatterings in the detector could induce electron ionization signatures due to the Migdal effect. We derive prospects …
Mar 7, 2024 9:00 AM China Standard Time
BiliBili Youtube
A neutrino floor for the Migdal effect

2023

Wave dark matter
We will discuss the possibility that dark matter is composed of sufficiently light particles that it effectively behaves as a …
Nov 29, 2023 10:00 AM China Standard Time
BiliBili Youtube
Wave dark matter
Scouting for Light Dark Showers at the LHC
As the LHC physics program continues, the search for physics beyond the Standard Model is now pushing into ever more challenging …
Nov 22, 2023 11:00 AM China Standard Time
PDF BiliBili Youtube
Scouting for Light Dark Showers at the LHC
Baryogenesis from extended scalar sectors: off the beaten track
Extended scalar sectors can yield baryogenesis at the EW scale. This is generally related to their providing the needed departure from …
Nov 15, 2023 3:00 PM China Standard Time
BiliBili Youtube
Baryogenesis from extended scalar sectors: off the beaten track
Leptogenesis and Gravity Waves from a SUSY-breaking Phase Transition
It has been shown that supersymmetry breaking in a hidden sector at the PeV scale can lead to adistinctive strong first order phase …
Oct 25, 2023 9:00 AM China Standard Time
PDF BiliBili Youtube
Leptogenesis and Gravity Waves from a SUSY-breaking Phase Transition
Light mediator models for the dark sector
In this talk, I will first discuss the low mass mediator models with specific examples. These models contain new particles, e.g. light …
Oct 16, 2023 10:00 AM China Standard Time
BiliBili Youtube
Light mediator models for the dark sector
Dark matter in compact stars and galactic structure
Dark matter that accumulates in compact stars can have a number of observable effects, including thermal emission from the surface of …
Sep 12, 2023 10:00 AM China Standard Time
BiliBili Youtube
Dark matter in compact stars and galactic structure
Fluctuations of ultralight dark matter
Ultralight dark matter is a compelling dark matter candidate. Being wavelike, it has interesting phenomenological implications in the …
Jun 21, 2023 3:00 PM China Standard Time
PDF BiliBili Youtube
Fluctuations of ultralight dark matter
Journey with Sourced Millicharged Particles and Dark Photons
Hidden $U(1)$ symmetries are widely prevalent across numerous new physics models and have garnered significant attention. These …
Jun 7, 2023 10:00 AM China Standard Time
PDF BiliBili Youtube
Journey with Sourced Millicharged Particles and Dark Photons
Cosmological Signatures of Dark Photons
Cosmological observables are particularly sensitive to the existence of ultralight dark photons. I will describe the physics of …
May 24, 2023 10:00 AM China Standard Time
PDF BiliBili Youtube
Cosmological Signatures of Dark Photons
Towards accurate neutrino cross sections - the argon and titanium spectral functions from (e,e’p) data
To shed light on the difference between matter and antimatter in the Universe and search for physics beyond the Standard Model, the …
May 3, 2023 3:00 PM China Standard Time
PDF BiliBili Youtube
Towards accurate neutrino cross sections - the argon and titanium spectral functions from (e,e’p) data
Phenomenological Studies of the Georgi-Machacek Model
With theoretical constraints such as perturbative unitarity and vacuum stability conditions and updated experimental data of Higgs …
Apr 26, 2023 10:00 AM China Standard Time
PDF BiliBili Youtube
Phenomenological Studies of the Georgi-Machacek Model
Dark Sector Searches at the LHC
It is plausible that the dark matter is a remnant of a hidden sector that involves new strongly coupled dynamics akin to Standard Model …
Apr 12, 2023 3:00 PM China Standard Time
PDF BiliBili Youtube
Dark Sector Searches at the LHC
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 …
Mar 15, 2023 10:00 AM China Standard Time
PDF BiliBili Youtube
Confining Hidden Sectors at LHC and Beyond

2022

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 …
Dec 21, 2022 10:00 AM China Standard Time
PDF BiliBili Youtube
Light dark matter and implications for structure formation
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 …
Dec 7, 2022 4:00 PM China Standard Time
PDF BiliBili Youtube
Heavy quark decays: Gate to new physics?
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 …
Nov 30, 2022 10:00 AM China Standard Time
PDF BiliBili Youtube
Accelerated light dark matter
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 …
Nov 16, 2022 10:00 AM China Standard Time
PDF BiliBili Youtube
Parity Solution to the Strong CP Problem and its Experimental Tests
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 …
Nov 9, 2022 10:00 AM China Standard Time
Slides Video
Some Ruminations On The Interplay Between Bayesian Inference and Machine Learning
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. …
Oct 19, 2022 3:00 PM China Standard Time
Slides Video
Spin-Dependent Dark Matter-Electron Interactions
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 …
Oct 12, 2022 10:00 AM China Standard Time
Slides Video
Minimal Entanglement and Emerging Symmetries in Low-energy QCD
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 …
Sep 28, 2022 3:00 PM China Standard Time
PDF Slides Video
The new frontiers of Composite Higgs models at current and future colliders
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 …
Sep 14, 2022 2:00 PM China Standard Time
Slides Video
A Tale with Precision
Neutrino Oscillations
Colloquium from Nobel prize winner Prof. Takaaki Kajita to celebrate our 120th year.
Sep 9, 2022 2:00 PM China Standard Time
Slides Video
Neutrino Oscillations
Superdeterminism: The Forgotten Solution
What is a measurement? This, it turns out, is the most difficult question in physics today. In this talk, I will explain why the …
Jun 29, 2022 4:00 PM China Standard Time
Slides Video
Superdeterminism: The Forgotten Solution
The Higgs Boson - A Dissection Tool for New Physics
The discovery of the Higgs boson in 2012 by the LHC experiments ATLAS and CMS at the Large Hadron Collider marked a milestone for …
Jun 15, 2022 3:00 PM China Standard Time
Slides Video
The Higgs Boson - A Dissection Tool for New Physics
Precision effective number of neutrinos $N_\textrm{eff}$
Many beyond-Standard-Model theories predict light and feebly interacting states that can be efficiently produced in the early universe. …
Jun 8, 2022 10:00 AM China Standard Time
Slides Video
Precision effective number of neutrinos $N_\textrm{eff}$
Searching for new physics in neutrino-quark interactions
The neutrino sector is currently not well constrained and may be hiding new physics beyond neutrino masses. In this talk I will …
Jun 1, 2022 3:00 PM China Standard Time
Slides Video
Searching for new physics in neutrino-quark interactions
The Future of Composite Dynamics: From composite Higgs to composite dark sectors
I will show how novel composite dynamics is a primary candidate to explain all of or some of the SM anomalies from the observation of …
May 25, 2022 3:00 PM China Standard Time
Slides Video
The Future of Composite Dynamics: From composite Higgs to composite dark sectors
Navigating the parameter space of the 3HDMs
The simple idea of several Higgs generations is the basis of the $N$-Higgs-doublet model and leads to many model-building opportunities …
May 11, 2022 3:00 PM China Standard Time
Slides Video
Navigating the parameter space of the 3HDMs
Collider Phenomenology of Simple $Z^\prime$ Models for $b \to s \mu^+ \mu^-$ Anomalies
The $b \to s \mu^+ \mu^-$ anomalies constitute a set of measurements which collectively disagree with Standard Model predictions at …
Apr 27, 2022 4:00 PM China Standard Time
Slides Video
Collider Phenomenology of Simple $Z^\prime$ Models for $b \to s \mu^+ \mu^-$ Anomalies
Confronting BSM physics with the latest experimental results
The present status of particle physics and some open questions motivating physics beyond the Standard Model (BSM) are briefly reviewed. …
Apr 13, 2022 3:00 PM China Standard Time
Slides Video
Confronting BSM physics with the latest experimental results
Automating generic phenomenology
Experimental searches typically publish limits on not only specific models, but specific scenarios within a model. For a theorist to …
Apr 6, 2022 3:00 PM China Standard Time
Slides Video
Automating generic phenomenology
Higgs-mass predictions in SUSY models
Over the past decade, the discovery of the Higgs boson and the remarkably precise measurement of its mass at the LHC have spurred new …
Mar 30, 2022 4:00 PM China Standard Time
Slides Video
Higgs-mass predictions in SUSY models
Axion Quasiparticles for Axion Dark Matter Detection
It has been suggested that certain antiferromagnetic topological insulators contain axion quasiparticles (AQs), and that such materials …
Mar 23, 2022 4:00 PM China Standard Time
Slides Video
Axion Quasiparticles for Axion Dark Matter Detection
Was There an Electroweak Phase Transition?
The possible existence of beyond Standard Model physics at the TeV scale or below has important implications for the thermal history of …
Mar 9, 2022 9:00 AM China Standard Time
Slides Video
Was There an Electroweak Phase Transition?
Search for new physics with rare B decays
Recently, several consistent deviations from the Standard Model predictions have been measured in flavour physics observables, and in …
Mar 1, 2022 4:00 PM China Standard Time
Slides Video
Search for new physics with rare B decays
New 5D Perspectives on the QCD Axion
The QCD axion provides a solution to both the strong CP and dark matter problems in the Standard Model. However, the axion solution …
Feb 9, 2022 9:00 AM China Standard Time
Slides Video
New 5D Perspectives on the QCD Axion
StratLearn: A general-purpose method for supervised learning under covariate shift with applications to observational cosmology
Supervised machine learning will be central in the analysis of upcoming large-scale sky surveys. However, selection bias for …
Jan 19, 2022 4:00 PM China Standard Time
PDF Slides Video
StratLearn: A general-purpose method for supervised learning under covariate shift with applications to observational cosmology

2021

Primordial Black Holes as a dark matter candidate
Primordial Black Holes (PBHs) are black holes formed in the early Universe, for instance from the collapse of large density …
Dec 15, 2021 4:00 PM China Standard Time
Slides
Primordial Black Holes as a dark matter candidate
Why is the Higgs boson SM-like?
The properties of the Higgs boson discovered in 2012 at the LHC are consistent with the predictions of the Standard Model (SM), to …
Dec 8, 2021 3:00 PM China Standard Time
Slides Video
Why is the Higgs boson SM-like?
Deep Learning & the future of the LHC search program
We discuss how Deep Learning could be used to help our quest for new physics at the LHC. After introducing the basic ingredients, we …
Dec 1, 2021 4:30 PM China Standard Time
Slides Video
Deep Learning & the future of the LHC search program
Hunting for sub-GeV dark matter with gas-based detectors
In this talk, I’ll discuss ideas for new approaches in the hunt for light dark matter was gas-based detectors. Firstly, I’ll discuss …
Nov 24, 2021 3:00 PM China Standard Time
Slides Video
Hunting for sub-GeV dark matter with gas-based detectors
Searching for sub-GeV dark matter
The non-observation of evidence for conventional dark matter candidates such as WIMPs has led to a growing interest in less explored …
Nov 17, 2021 3:00 PM China Standard Time
Searching for sub-GeV dark matter
Unsupervised Machine Learning in Astrophysical Data
Large astrophysical surveys provide us with a wealth of data that has important implications for fundamental physics questions. Fully …
Nov 10, 2021 10:00 AM China Standard Time
PDF Slides Video
Unsupervised Machine Learning in Astrophysical Data
B anomalies and the flavor of SMEFT
Recent data in B-meson decays indicate a coherent pattern of deviations from the Standard Model predictions. These …
Oct 27, 2021 3:00 PM China Standard Time
Slides Video
B anomalies and the flavor of SMEFT
Venturing into the neutrino fog
The last few years have seen the largest underground dark matter searches rapidly approach their purported ultimate sensitivity limit, …
Oct 20, 2021 3:00 PM China Standard Time
PDF Code Slides Video
Venturing into the neutrino fog
Forward and Inverse LHC Simulations with Neural Networks
LHC physics is a unique field in the sense that we compare vast and highly complex data sets with precise first-principles predictions. …
Oct 13, 2021 3:00 PM China Standard Time
PDF Slides Video
Forward and Inverse LHC Simulations with Neural Networks
Gravitational instantons, CP asymmetry, and axions
Quantum gravity effects are typically considered irrelevant for particle physics and its phenomenology. Contrary to this, I will argue …
Sep 29, 2021 10:00 AM China Standard Time
PDF Slides Video
Gravitational instantons, CP asymmetry, and axions
Dark Matter Puzzles from Indirect Searches
The nature and origin of dark matter is one of the key unresolved questions of fundamental physics. Astrophysical and cosmological data …
Jun 17, 2021 9:00 AM China Standard Time
Slides Video
Dark Matter Puzzles from Indirect Searches
FASER and Forward Physics at the LHC
For decades, the focus of searches for new particles at the energy frontier has been on heavy particles and high $p_T$. Recently, …
Jun 10, 2021 11:00 AM China Standard Time
Slides Video
FASER and Forward Physics at the LHC
Dark Matter Capture in Stars
The capture of dark matter in stars provides a cosmic laboratory in which to study the nature of dark matter particles and their …
Jun 3, 2021 11:00 AM China Standard Time
Slides Video
Dark Matter Capture in Stars
Direct detection of dark matter - a theorist’s perspective
Measurement of a signal in direct detection of a hypothetical particle constituting the dark matter in the Universe would provide …
May 6, 2021 3:00 PM China Standard Time
PDF Slides Video
Direct detection of dark matter - a theorist’s perspective
New Paradigms for New Physics Searches at the LHC with Machine Learning
In recent years, there has been growing interest and many new ideas for anomaly detection and model-independent new physics searches at …
Apr 29, 2021 9:00 AM China Standard Time
Slides Video
New Paradigms for New Physics Searches at the LHC with Machine Learning
The Hubble tension and early dark energy
We’ve known since the late 1920s that the Universe is expanding. However, the expansion rate currently inferred from measurements …
Apr 22, 2021 9:00 AM China Standard Time
Slides Video
The Hubble tension and early dark energy
Axion Dark Matter
The axion is a hypothetical particle motivated by the strong CP problem of elementary particle physics and by the dark matter problem …
Apr 15, 2021 9:00 AM China Standard Time
Slides Video
Axion Dark Matter
Muon $g-2$ and physics beyond the Standard Model
For two decades, the Brookhaven $g-2$ measurement has remained a tantalizing deviation from the SM prediction and a potential …
Apr 2, 2021 3:00 PM China Standard Time
PDF Slides
Muon $g-2$ and physics beyond the Standard Model
Fundamental Physics from Gravitational Waves
The recent observations of gravitational waves have opened new opportunities in astrophysics, cosmology and fundamental physics, some …
Mar 25, 2021 3:00 PM China Standard Time
Slides Video
Fundamental Physics from Gravitational Waves