2021 Chung-Ang University Beyond the Standard Model Workshop

1 Feb 2021, 09:00 → 3 Feb 2021, 18:30 Asia/Seoul

Chang Hyon Ha (Chung-Ang University), Gungwon Kang (Chung-Ang University), Hyun Min Lee (CAU - Chung-Ang University (KR)), Myeonghun Park (Seoultech), Siyeon Kim (Chung-Ang University)

The Chung-Ang University Beyond the Standard Model (CAU BSM) Workshop is the first meeting on Physics Beyond the Standard Model (Higgs, Dark Matter, Axion, Inflation, GWs and Neutrino Physics) in Chung-Ang University, Korea. We aim at inviting experts on discussing interesting current topics and initiating the collaborations between different institutions in the globe.  Although the first series starts with ZOOM on the web, the CAU workshop is to keep the community connected with lively discussion and participation.

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Feb 1 (Day 1)

Zoom online Meeting ID: 810 7903 2856

https://cau.zoom.us/j/81079032856?pwd=QzduNm93UktENi9UMkpYRy9waVVEUT

Feb 2 (Day 2)

Zoom online Meeting ID: 872 8553 7510

https://cau.zoom.us/j/87285537510?pwd=NlJCUDhhazBpRWM5ZkVKUWplN2tTQT09

Feb 3 (Day 3)

Zoom online Meeting ID: 867 7016 3587

https://cau.zoom.us/j/86770163587?pwd=YmFKbGZpVURxZ2RYUFNxSWdBbW8vZz09

 

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Invited speakers

Cliff Burgess (Perimeter Institute/McMaster Univ)

Kiwoon Choi (IBS-CTPU)

Eung Jin Chun (KIAS)

Nathaniel Craig (UC Santa Barbara)

Dumitru Ghilencea (Bucharest, IFIN-HH)

Jinn-Ouk Gong (Ewha Univ)

Deog-Ki Hong (PNU)

Anson Hook (Univ of Maryland)

Kwang Sik Jeong (PNU)

Sunghoon Jung (SNU)

Sin Kyu Kang (Seoultech)

Hyung Do Kim (SNU)

Jihn E. Kim (KHU)

Pyungwon Ko (KIAS)

Kyungchul Kong (Univ Kansas)

Joachim Kopp (CERN/Mainz)

Gordan Krnjaic (Fermilab)

Hye-Sung Lee (KAIST)

Seung Joon Lee (Korea Univ)

Hitoshi Murayama (UC Berkeley)

Jong Chul Park (Chungnam Nat Univ)

Seong Chan Park (Yonsei Univ)

Tilman Plehn (Uni-Heidelberg)

Chang Sub Shin (IBS-CTPU)

Yuhsin Tsai (Notre Dame Univ)

Un-Ki Yang (SNU)

Hai-Bo Yu (UC Riverside)

 

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CAU Department of Physics: http://physics.cau.ac.kr

CAU THEP Group: https://sites.google.com/site/cautheplab

 

CAU BSM poster final.jpg

Monday 1 February

1 Superconducting Axion String and Cosmic Background Axion

Speaker: Hitoshi Murayama (University of California Berkeley (US))

CAUBSMWS2021.pdf

2 Hierarchical axion couplings from axion landscape

Speaker: Kiwoon Choi

choi_cau_bsm.pdf

10:40 Coffee break

3 SU(2) Anomaly for DE Source

I show a possibility that a quintessential axion (with its breaking by the weak SU(2) gauge anomaly) can be the source of dark energy. However, I cannot show why the minimum of the potential is at the zero value for the cosmological constant.

Speaker: Jihn E. Kim (Kyung Hee University)

KimJEcaubsm21.pdf

4 Axion-driven hybrid inflation over a barrier

Speaker: Kwang Sik Jeong

barrier-inflation.pdf

12:10 Lunch & Discussion

5 Extreme Testing of Self-Interacting Dark Matter

Speaker: Hai-Bo Yu (University of California, Riverside)

2021CAU_HBYU.pdf

6 Cooling of young neutron stars and dark gauge bosons

The standard cooling scenario in the presence of nucleon superfluidity fits rather well to the observation of the neutron stars. It implies that the stellar cooling arguments could place a stringent constraint on the properties of novel particles. We study in particular the cooling rate induced by dark gauge bosons for very young neutron stars: remnants of Cassiopeia A and SN1987A. The cooling is dominantly contributed either by the nucleon pair breaking and formation in the core or by the electron bremsstrahlung in the crust, depending on the age of the stars and the form of the couplings. We compute how much the cooling curve of the young neutron stars could be modified by the extra dark gauge boson emission and obtain the bound for the dark gauge boson.

Speaker: Deog Ki Hong (Pusan National University (KR))

ns_cas_a.pdf

7 Dark Axion Portal

Speaker: Hye-Sung Lee (KAIST)

Dark Axion Portal (CAU BSM 2021).pdf

15:40 Coffee break

8 Hunting for New Physics in Neutrino Oscillation Experiments

The goal of this phenomenology-oriented talk is to highlight some of the
manifold ways in which neutrino oscillation experiments contribute to
the global search for physics beyond the Standard Model. We will in
particular discuss searches for sterile neutrinos (for which there exist
some tantalizing but controversial hints), searches for new interactions
in an effective field theory context, and searches for dark matter.
Moreover, we will highlight the tremendous potential of neutrino "Near
Detectors" for probing light and weakly interacting new particles.
Throughout the talk, we will also highlight the Standard Model
challenges that current and future neutrino oscillation experiments are
facing, in particular with regard to precision prediction for
neutrino-nucleus interactions.

Speaker: Joachim Kopp (CERN)

neutrino-bsm.pdf

9 Neutrino oscillations in a medium

Speaker: Eung Jin Chun (Korea Institute for Advanced Study)

210201-CAU-NuDispersion.pdf

10 New mechanism for baryon asymmetry and connection with dark matter

Speaker: Sin Kyu Kang (Seoul-Tech)

SKKANG.pdf

Tuesday 2 February

11 Fun with axions and axion strings

Speaker: Anson Hook (University of Maryland)

CAU BSM - hook.pdf

12 Exploring the Universe with Dark Light Scalars

Speaker: Chang Sub Shin (Institute for Basic Science )

2021CAUBSM_CSS.pdf

10:40 Coffee break

13 Primordial Black Hole Domination: Dark Matter, Dark Radiation, and Gravitational Waves

If even a relatively small number of primordial black holes (PBH) were created in the early universe, they will constitute an increasingly large fraction of the total energy density as space expands. It is thus well-motivated to consider scenarios in which the early universe was dominated by short lived PBH (M < 10^9 grams, t < 1 sec)
whose Hawking radiation produces both the Standard Model radiation bath and other exotic gravitationally coupled species. Within this context, we consider Hawking radiation as a mechanism to produce dark radiation and dark matter. In a PBH dominated era, we find that Schwarzschild Hawking evaporation produces dark radiation at a level ΔNeff∼0.03−0.2 for each light and decoupled species of spin 0, 1/2, or 1. During this era, dark matter could also originate as Hawking radiation, although such dark matter candidates must be very heavy (m >10^11 GeV) to avoid overproduction. Furthermore, if the PBH undergo mergers before evaporating, the subsequent population acquires nonzero spin, so the resulting Kerr Hawking radiation efficiently produces gravitons whose contribution to ΔNeff is within the reach of future CMB experiments; such mergers also predict a characteristic spectrum of primordial gravitational waves at high frequencies correlated with the progenitor PBH mass.

Speaker: Gordan Krnjaic (Fermilab)

CAU-Workshop.pdf

14 Small-scale shear: Diffuse subhalos with gravitational waves

Speaker: Sunghoon Jung (Seoul National University)

GWphenoDM-SJung.pdf

12:10 Lunch & Discussion

15 Double Higgs production at the HL-LHC

Speaker: K.C. Kong (University of Kansas)

CNU2021.pdf

16 Search for BSM Higgs at the LHC

Speaker: Un-Ki Yang

BSM-Higgs-21.pdf

17 Gapped Continuum Dark Matter

Speaker: Seung J. Lee (Korea University)

15:40 Coffee break

18 Higgs in the Swampland

Speaker: Nathaniel Craig (UC Santa Barbara)

CAUBSM_Higgs_Craig.pdf

19 Invertible LHC Simulations with Generative Networks

Speaker: Tilman Plehn

cau_21.pdf

20 The weak scale as a trigger

Speaker: Hyung Do Kim (Seoul National University)

2021CAU_hdkim.pdf

Wednesday 3 February

21 EFTs and Inflation

Speaker: Clifford Peter Burgess (McMaster University (CA))

EFTsInflation-Slides.pdf

22 Leptogenesis in Higgs inflation

Speaker: Seong Chan Park (Yonsei University)

2021_CAU.pdf

10:40 Coffee break

23 Cosmological Particle Production and Pairwise Hotspots on the CMB

Speaker: Yuhsin Tsai (Fermilab/Cornell)

CAU workshop_Tsai.pdf

24 Quantum aspects of inflationary GWs

Speaker: Jinn-Ouk Gong

2021-02-03_caubsm.pdf

12:10 Lunch & Discussion

25 Inelastic DM models with Dark Higgs boson

Speaker: Pyungwon Ko (Korea Inst. for Advanced Study (KIAS))

CAU2021_pko.pdf

26 Detecting Super-Light Dark Matter with Graphene Josephson Junction

Speaker: Jong-Chul Park

Graphene-DM_CAU_JCPark.pdf

27 Dark matter particles and neutrinos with NaI(Tl) crystal detectors

Speaker: Chang Hyon Ha (Chung-Ang University)

CAUBSM_ChangHyonHa.pdf

15:40 Coffee break

28 Spontaneous breaking of Weyl quadratic gravity to Einstein action and inflation

Speaker: Dumitru Ghilencea (IFIN-HH (RO))

2021-seoul-ghilen.pdf

29 Toward waveform modelings for gravitational waves from black hole encountering

Speaker: Gungwon Kang (KISTI)

CAUBSM_GWKang.pdf

CAUBSM_GWKang.pptx