Workshop on Higgs and Cosmology connection: Yonsei-APCTP-France-Korea Star collaboration project

Session

Session

12 Dec 2022, 14:00

Science Hall #327

Conveners

Session: 1

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Session: 2

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Session: 3

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Session: 4

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Session: 5

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Session: 6

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Session: 7

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Session: Round Table on BSM

• Seong Chan Park & P. Ko ()

Session: Collaboration Meeting

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Contribution list Timetable

8. Revealing the local cosmic web from galaxies by Deep Learning

Donghui Jeong

12/12/2022, 14:00

The 80% of the matter in the Universe is in the form of dark matter that comprises the skeleton of the large-scale structure called the Cosmic Web. As the Cosmic Web dictates the motion of all matter in galaxies and inter-galactic media through gravity, knowing the distribution of dark matter is essential for studying the large-scale structure. However, the Cosmic Web's detailed structure is...

3. A new mechanism for symmetry breaking from nilmanifolds

Aldo Deandrea

12/12/2022, 15:00

4. Baryonic solutions to dark matter problems in dwarf galaxies

Taysun Kimm

13/12/2022, 10:00

It has been argued that the number density and matter distribution in the local dwarf galaxies pose a real challenge to the cold dark matter scenario. However, it is not yet clear how visible matter evolves and shapes the distribution of dark matter, potentially limiting the use of dwarf galaxies as a testbed. In this talk, I will give a brief overview of the well-known missing satellite and...

5. Cosmology with polarized CMB: GroundBIRD telescope

Eunil Won

13/12/2022, 11:00

The standard, a spatially-flat six-parameter model of the universe, having a cosmological constant and dark matter as dominant forms of the energy density in the universe at present, agrees remarkably well with observational data to date. Along with it, a model of rapid accelerated expansion of the very early universe predicts distinct polarized patterns in CMB. In this presentation, we...

7. KCMS and some updates from the LHC

Hwidong YOO (Yonsei University)

13/12/2022, 14:00

6. New approaches to semi-invisible tau and B decays

Chan Beom Park

13/12/2022, 15:00

New particles in the MeV-GeV range produced at colliders and escaping detection can be searched for at operating B and tau factories such as Belle II. A typical search channel involves pair-produced taus (or mesons), one of which decaying to invisible particle(s), and the other providing a tag. One crucial impediment of these searches is the limited ability to reconstruct the parents' separate...

2. Composite dark matter: simplified models, non-minimality and overlooked channels

Benjamin Fuks

14/12/2022, 10:00

9. Astrophysical Probes of Dark Matter

Haibo Yu

14/12/2022, 11:00

I will give an overview on astrophysical probes of dark matter, which seek to determine fundamental properties of dark matter through observations of galaxies. In particular, I will discuss implications of strong dark matter self-interactions on cosmic structure formation and observational tests for such a scenario.

10. Probing sub-parsec scale matter power spectrum with diffractive lensing of gravitational waves

Han Gil Choi

15/12/2022, 10:00

Gravitational waves (GW) radiated by compact binary coalescences can be diffracted by astrophysical-size objects due to long wavelength.
This is so called diffractive lensing. The length scale of the diffraction is determined by the geometric mean of GW wave length and the effective distance to lens, and it becomes O(1 pc) assuming GW frequency ~ 1Hz and the distance to lens ~ 1 Gpc....

11. Searching for nu-physics: Overview of Experimental Neutrino Physics

Jay Hyun Jo

15/12/2022, 11:00

Neutrinos are the most elusive fundamental constituents of matter. And yet these particles may hold the keys to exotic new phenomena, which transcend our Standard Model of particle physics. In the last several decades neutrino experiments have given us a consistent picture of neutrino mass and mixing among three neutrino flavors. However, fundamental questions about the nature of the neutrino...

12. PBHs and GWs from a Supersymmetric Higgs Inflation (online)

Jinsu Kim

15/12/2022, 14:00

I discuss the possibility of curvature perturbation enhancement in a supersymmetric version of the nonminimally-coupled Higgs inflation model. The large curvature perturbation not only leads to the formation of primordial black holes, but it also sources gravitational waves. Focusing on the two-field case, I present the parameter region where the produced primordial black holes may account for...

13. Lepton-flavor-violating light new physics search at rare muon decays (online)

Yongsoo Jho

15/12/2022, 14:30

We study the sensitivity of the existing MEG data to lepton flavor violating axion-like particles produced through μ→eaγ and estimate the discovery potential for the upcoming MEG II experiment in this channel. The MEG II signal efficiency can be improved significantly if a new trigger can be implemented in a dedicated run with a reduced beam intensity. This search would establish the world...

14. Lepton portal dark matter at future electron-positron and muon colliders

Adil Jueid

15/12/2022, 15:00

In this talk, I discuss the phenomenology of a minimal lepton portal dark matter at high-energy electron-positron and muon colliders. The model consists of two extra gauge singlets: a charged scalar singlet and a right-handed Majorana fermion. The latter plays the role of a dark-matter candidate. After discussing the impact of all the existing theoretical and experimental constraints on the...

16. Tri-Higgs to distinguish the high- and low-cutoff scales

Jeonghyeon Song

15/12/2022, 16:00

18. Primordial Black Holes: New Particle Factories! (online)

Jong-Chul Park

16/12/2022, 10:00

17. Higgstrahlung, dark photons, and invisible particles at Belle & Belle II

Prof. Youngjoon Kwon (Yonsei University)

16/12/2022, 11:00

In this talk, we present recent studies of semi-invisible final states of various processes in the Belle and Belle II experiments. In particular, we cover the following results: lepto-philic Z' decays to invisible final states and dark photon search in the dark-Higgsstrahlung process, both in the e+ e- continuum, search for invisible baryon-like dark matter particle in the B-mesogenesis...

19. Round Table on BSM

Aldo Deandrea (Lyon, France) Benjamin Fuks (Sorbonne, France) Donghui Jeong (Penn State Univ., USA) Yongsoo Jho (Weizmann, Israel) Jay Hyun Jo (Brookhaven National Lab., USA) Sunghoon Jung (Seoul National University, Korea) Jinsu Kim (Tongji Univ., China) Tae Jeong Kim (CMS, Hanyang University, Korea) Taysun Kimm (Yonsei University, Korea) Chan Beom Park (Chonnam Nat'l Univ., Korea) Eunil Won (Korea Univ., Korea) Haibo Yu (UC Riverside, USA)

16/12/2022, 14:00

20. Coffee Break

15. Direct Detection of Relic Sterile Neutrino with PTOLEMY-like Experiment

Seong Moon Yoon