Conveners
Plenary session
- Jin Chang
Plenary session
- Art McDonald
Plenary session
- Kaixuan Ni
Plenary session
- Bingsong Zou
Plenary session
- Yanbei Chen (California Institute of Technology)
Plenary session
- There are no conveners in this block
Plenary session
- Haipeng An (Tsinghua University)
Plenary session
- Yi Wang
Plenary session
- There are no conveners in this block
Plenary session
- There are no conveners in this block
This talk presents selected aspects of neutrino theory and phenomenology. We take a low-energy perspective, considering neutrino mass as an EFT extension of the Standard Model, stressing the unique oportunity of neutrinoless double-beta decay to test this hypothesis. We give a brief overview of the present status of the three-flavour paradigm, high-lighting its success, as well as pointing out...
I will review the current status of reactor, atmospheric, and long-baseline accelerator neutrino oscillation experiments, with a focus on the parameter constraints within the three-flavor oscillation framework. Thanks to a wide range of experiments, we now have increasingly precise neutrino oscillation measurements across a broad spectrum of energies and baselines. This is significant for two...
The absolute mass and fundamental nature of the neutrino are still undetermined. Beta decays are unique tools to probe them in the laboratory. While the kinematics of single beta decay enable model-independent measurements of the neutrino mass, the observation of neutrinoless double beta decay would identify neutrinos as Majorana particles. In this talk, I will present the current status,...
This lecture will cover the status and perspectives of neutrino astronomy that opened a new unique observational window on the high energy Universe where the most violent phenomena take place. Neutrino astronomy was born in 2013 with the observation of a cosmic neutrino flux made by IceCube at South Pole. The realization of deep underwater/ice Cherenkov neutrino telescopes is a very...
The presentation will review coherent neutrino scattering and searches for sterile neutrinos. It will cover the status and recent developments of experiments in the field, new results and it will indicate perspectives for the future.
Please supplement the content of the abstract.High-energy cosmic neutrinos hold vast potential to propel particle physics and astrophysics forward. They have the highest detected neutrino energies---up to the PeV scale and beyond---and travel the longest distances---up to billions of light-years, the size of the observable Universe. These unique properties make them piercing probes of...
Are WIMP (weakly interacting massive particles) dark matter models still viable? A years-long, concerted global search for such particles has so far failed to find conclusive evidence for their existence. Despite this, there are still regions of parameter space that still allow for WIMPS to be the dark matter of the Universe. At the same time, the lack of non-gravitational evidence for WIMPs...
Over the past two decades, noble liquid detectors located deep underground have made remarkable advancements, significantly enhancing their ability to explore a diverse parameter space for dark matter particles. These increasingly sensitive detectors are now evolving into versatile particle astrophysics observatories. Notably, xenon-based detectors are beginning to see solar neutrino-nucleus...
The nature of dark matter remains one of the mysteries in modern physics. While traditional searches have focused on the weak-scale mass range, a growing body of theoretical and experimental work is now exploring the possibility of low-mass dark matter, with mass spanning from MeV down to sub-eV scales. This shift in focus has sparked a wave of technological innovation aimed at detecting...
We review the theory and experimental status of the axion as a solution to the strong-CP problem and a leading ultra-light, wave-like dark-matter candidate. We summarize the PecceiโQuinn mechanism, axion couplings, and cosmological production via misalignment. Astrophysical probes๏ผstellar cooling, pulsar-timing arrays, and black-hole superradiance๏ผetc๏ผalready set strong bounds across wide...
The nature of dark matter, one of the most compelling open questions in fundamental physics, is still unknown. A comprehensive search program has developed over the past decades, spanning direct detection experiments, indirect detection via astrophysical signals, and collider-based production. In this talk, we focus on collider searches for dark matter, particularly at the Large Hadron...
Although the existence of dark matter is well established, its nature remains elusive. Dark matter could be part of the "dark sectors," comprising hidden particles with new interactions. Such interactions could cause dark matter to self-interact, altering the formation and evolution of dark matter halos. Self-interacting dark matter halo undergoes gravothermal evolution, where the central halo...
The LIGO/Virgo/Kagra network of gravitational-wave observatories recently announced the detection of its 200th event during the current observing run (O4). As we approach the 10 year anniversary of the first gravitational wave observation, what is the current state of the international network of detectors, and what does the next decade of gravitational wave observation look like?
Almost a decade ago, the first observation of gravitational waves and the discovery of the merger of a binary black-hole system opened up a new window into the Universe. With many more binary-black-hole mergers observed, with in addition the observation and discovery of a binary neutron star merger, the establishment of gravitational wave astronomy revolutionised astroparticle physics. Current...
China's space-based gravitational wave detection projects will open a new observational window in the mid-to-low frequency band (0.1 mHz to 1 Hz), providing new approaches to understand the origin and evolution of the universe, the formation and evolution of black holes, the nature of gravity, dark energy, and dark matter. Since space-based gravitational wave detection involves a series of key...
The exceptional experimental conditions of deep-underground laboratories enable ultra-high-sensitivity force and displacement measurements, which are critical for gravitational studies. This talk will discuss potential experiments in facilities like Jinping Lab, including tests of spaceborne gravitational wave detection technologies, characterization of unknown instrumental noise,...
In the talk, we will present the results of high precision pulsar timing of 57 millisecond pulsars conducted using the the Chinese FAST 500-meter radio telescope. Particularly, we will highlight the gravitational wave searching efforts of the Chinese Pulsar Timing Array collaboration. More backgrounds and topics on pulsar timing, nanoHertz GW detection, and gravity test will be also covered....
The increasing interest in detecting gravitational waves (GWs) in the decihertz (0.1 Hz) band has inspired the exploration of novel detection methodologies. The Moon, with its substantial mass and low ambient seismic noise, has long been regarded as a promising natural resonant detector for decihertz GWs. Recent proposals for lunar seismology missionsโsuch as Chinaโs Changโe program and...
We investigate whether dark energy deviates from the cosmological constant ($\Lambda$CDM) by analyzing baryon acoustic oscillation (BAO) measurements from the Data Release 1 (DR1) and Data Release 2 (DR2) of DESI observations, in combination with Type Ia supernovae (SNe) and cosmic microwave background (CMB) distance information. We find that with the larger statistical power and wider...
Particle physics during cosmic inflation can be inferred from the density (galaxy) correlations in our present universe. In particular, the mass of inflationary produced particles appears as a resonance in the correlation. The information about angular momentum, parity and decay width of the inflationary produced particles can be similarly studied. This program is known as the cosmological...
Axion-like particles offer a unified framework to address both dark matter (DM) and dark energy (DE) in cosmology. In this presentation, I will discuss recent advancements in two complementary areas. First, I will explore a quintessence axion model for dynamical dark energy, motivated by recent Baryon Acoustic Oscillation measurements from the Dark Energy Spectroscopic Instrument and...
Cosmological phase transitions represent drastic energy-release processes theorized to have occurred in the early universe. These transitions may arise during either the thermal expansion phase of the Big Bang or the inflationary epoch, generating distinctive observational signatures. Key consequences include gravitational waves, large-scale structure, primordial black holes, and primordial...
Dark matter could compose ~80% of all matter in the universe, and yet it is completely invisible to us. Despite decades of experiments designed to detect dark matter, and numerous models for potential dark matter particles, no concrete evidence has been put forward to support the existence of beyond standard-model physics. Because of this, it is worth asking whether approaching the detection...
Over the past two decades, high-energy gamma-ray astronomy has witnessed revolutionary progress driven by both space- and ground-based observations. Space-borne detectors, epitomized by the Fermi Large Area Telescope (Fermi-LAT), and ground-based facilities, including Imaging Atmospheric Cherenkov Telescopes (IACTs: H.E.S.S., MAGIC, VERITAS) and Extensive Air Shower (EAS) arrays (Tibet ASฮณ,...
The worldโs deep underground laboratories are special places for science. The current facilities are hosting a wide range of exciting, international, fundamental science studies and enabling the development of new technologies and techniques of importance and impact far beyond pure low background particle physics. The range of science undertaken in these laboratories is also growing, now...
In this talk, I will review recent progress in the measurement of Galactic and extragalactic cosmic rays, along with advances in their theoretical interpretation.For Galactic cosmic rays, in addition to direct observations from space-based experiments such as AMS-02, CALET, and DAMPE, the proton spectrum or the first time has been measured in the knee region by the ground-based LHAASO...
Supernovae come into two main subclasses, with one from core collapse expsloion of massive stars and the other one from thermonuclear explosion of white dwarfs in binary system. The former, dubbed as core-collapse supernovae (CCSNe), carries fundamental physics involved in evolution and explosions of massive stars such as neutrino, gravitational wave, and shock breakout. Whereas the latter,...
This talk will review progress on the detection of supernovae, solar and geo neutrinos. This is an area of significant interest and scientific activity, with major players currently including Borexino, KamLAND, SNO+ and SuperKamiokande, and with a number of major new facilities of relevance coming online in the near future, including JUNO, DUNE and HyperK. Owing to time constraints, the focus...
The surface heat flux of the Earth is 46 $\pm$ 3 TW (terawatts, 10$^{12}$ watts) or on average about 90 mW/m$^2$ and is the sum of contributions from primordial and radiogenic sources. Often geologists predict Earth's radiogenic power at 20 $\pm$ 10 TW, which comes from heat-producing elements (K, Th \& U). However, the full range of published estimates spans from 10 to 30 TW, documenting a...
The Deep Underground Neutrino Experiment (DUNE) will provide a unique platform for advancing low-energy neutrino physics, with powerful capabilities to study both solar and supernova neutrinos. DUNEโs liquid argon time projection chamber (LArTPC) technology enables precise reconstruction of neutrino interactions, offering simultaneous sensitivity to charged-current (CC) and elastic scattering...
The excavation of the large underground cavern for the Hyper-Kamiokande experiment is now nearing completion. In this talk, I will present the current status and the progress of the Hyper-Kamiokande detector construction, and the prospects for the upcoming phases of the project.
The Jiangmen Underground Neutrino Observatory (JUNO) is the largest liquid scintillator detector for neutrino physics ever built. At the end of 2024 the construction of the detector has ended and both Central Detector and the surrounding Water Cherenkov Detector have been filled with ultra pure water. At the beginning of February 2025, after having filled the complete detector, a short...
