2023 Chung-Ang University Beyond the Standard Model Workshop

20 Feb 2023, 09:30 → 24 Feb 2023, 18:00 Asia/Seoul

310-B502 & 418 (Chung-Ang University)

Hyun Min Lee (CAU - Chung-Ang University (KR))

The 2023 Chung-Ang University Beyond the Standard Model (CAU BSM) Workshop is the international meeting on Physics Beyond the Standard Model (Higgs, Dark Matter, Neutrino, Axion, Flavor, Inflation, Gravitational Waves) in Chung-Ang University, Korea. The aim of the BSM Workshop is to discuss interesting current topics and initiate the collaboration between experts and participants working on BSM physics in the globe. The third workshop will be held mostly in person, but remote participation on zoom will be also possible. We hope that the CAU workshop is to keep the community moving with lively discussion and participation.

The lecture room for the workshop is 310-B502, except on Wednesday. The Wednesday session will take place in 310-418.

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Time table

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Invited speakers

Kiwoon Choi (IBS CTPU)

Ki-Young Choi (SKKU)

Seong Youl Choi (Jeonbuk)

Eung Jin Chun (KIAS)

Simon Clery (Paris-Saclay)

Motoi Endo (KEK)

Dumitru Ghilencea (Bucharest, IFIN-HH)

Daniel Green (UC San Diego)

Kaoru Hagiwara (KEK)

Deog Ki Hong (PNU)

Sungwoo Hong (KAIST)

Sang Hui Im (IBS CTPU)

Sunghoon Jung (SNU)

Hyung Do Kim (SNU)

Kyungmin Kim (Ewha Womans Univ)

Yeongduk Kim (IBS CUP)

Youngmin Kim (UNIST)

Pyungwon Ko (KIAS)

Youngjoon Kwon (Yonsei)

Hyung Mok Lee (SNU)

Seung Joo Lee (IBS CTPU)

Seung J. Lee (Korea)

Takeo Moroi (Tokyo U)

Chan Beom Park (Chonnam)

Jong-Chul Park (Chungnam)

Myeonghun Park (Seoultech)

Seong Chan Park (Yonsei)

Matthew Reece (Harvard)

Ben Safdi (UC Berkeley)

Ryosuke Sato (Osaka)

Minho Son (KAIST)

Jeonghyeon Song (Konkuk)

David Weir (Helsinki)

Un-ki Yang (SNU)

SungWoo Youn (IBS CAPP)

 

 

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Information

The second series: 2022 CAU BSM Workshop

The first series: 2021 CAU BSM Workshop

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

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

CAU HEP Center: https://hep.cau.ac.kr

CAU BSM 2023 poster.png

Monday 20 February

09:30 → 10:30 Neutrino

09:30 What can we learn from neutrinos?

Speaker: Prof. Kaoru Hagiwara (KEK)

230220cau-nu.pdf

10:30 → 11:00 Break

11:00 → 12:20 Neutrino / Dark Matter

11:00 Current status on dark matter and neutrino experiments - focused on CUP projects

I will briefly review the status of direct dark matter experiments for WIMP search. The recent results of COSINE-100 experiment will be discussed. Then, I will review the status of double beta decay experiments and discuss the perspectives of the AMoRE experiment at Yemilab.

Speaker: Prof. Yeongduk Kim (IBS CUP)

caubsm-ydkim-short.pdf

11:40 Status of GLIMPSE

Speaker: Prof. Jong-Chul Park (Chungnam National University)

GLIMPSE_CAU-BSM2023.pdf

12:20 → 14:00 Lunch

14:00 → 15:40 Dark Matter

14:00 Neutrinos and Ultra-Light Dark Matter

Speaker: Prof. Eung Jin Chun (KIAS)

230220-CAU-Nu-ULDM.pdf

14:40 Addressing the Strong CP problem in Composite Higgs/ RS model - Virtual

Speaker: Prof. Seung J. Lee (Korea Univ)

CAU2023.pdf

15:10 De Sitter Self Organized Criticality of the Weak Scale

Speaker: Prof. Sunghoon Jung (Seoul National University)

6_Sunghoon Jung.pdf

15:40 → 16:10 Break

16:10 → 17:40 Primordial Black Holes

16:10 Primordial Black Holes as axion factories

Speaker: Prof. Seong Chan Park (Yonsei Univ)

20230220_CAU.pdf

16:50 Supernova Axion Emissivity with Δ(1232) Resonance in Heavy Baryon Chiral Perturbation Theory

Speaker: Dr Shu-Yu Ho (KIAS)

axiondelta_CAU.pdf

17:10 Late forming PBH: Beyond the CMB era

Speaker: Dr Kiyoharu Kawana (KIAS)

CAU_Kawana.pdf

Tuesday 21 February

09:30 → 10:30 Higgs

09:30 The Swampland and Particle Physics - Virtual

Speaker: Prof. Matthew Reece (Harvard Univ)

Reece_CAU_2023.pdf

10:30 → 11:00 Break

11:00 → 12:20 Higgs

11:00 String theoretic evidence for the Weak Gravity Conjecture

Speaker: Dr Seung-Joo Lee (IBS CTPU)

CAU_SLee_pdf.pdf

11:40 Entropy, geometry and collider physics

Speaker: Prof. Hyung Do Kim (Seoul National University)

CAU2023_hdkim.pdf

12:20 → 14:00 Lunch

14:00 → 15:40 Higgs

14:00 Searches for BSM Higgs Bosons at the LHC

Speaker: Prof. Un-ki Yang (Seoul National University)

BSM-Higgs-23_v2.pdf

14:40 New discovery channels for the fermiophobic Higgs boson in type-I 2HDM with high cutoff scales

Speaker: Prof. Jeonghyeon Song (Konkuk Univ)

230221-CAU-Song.pdf

15:10 Constructing the Covariant Vertices Systematically

We describe a systematic algorithm for constructing the Lorentz  covariant three-point vertices by studying the decay of a particle into two particles in which the masses and spins of the three particles are arbitrary. Then, we introduce a few useful and practical applications of the algorithm.

Speaker: Prof. Seong Youl Choi (Jeonbuk National University)

cau_bsm_2023_sychoi_230221.pdf

cau_bsm_2023_sychoi_230221.pptx

15:40 → 16:10 Break

16:10 → 18:00 Higgs

16:10 Measurement of the Standard Model Higgs properties at the LHC

Speaker: Prof. Myeonghun Park (Seoultech)

PARC.pdf

16:40 Generalized Global Symmetries in Particle Physics

Speaker: Prof. Sungwoo Hong (KAIST)

GGS in PP_CAU Workshop_SungwooHong_v2.pdf

17:10 Positivity bounds on Higgs-portal dark matter

Speaker: Dr Kimiko Yamashita (Chung-Ang University)

20230221cau-bsm_kimiko-y_pdf.pdf

Wednesday 22 February

09:30 → 10:30 Axion

09:30 The search for axions circa 2023 - Virtual

Speaker: Prof. Ben Safdi (UC Berkeley)

Chunh-Ang_2023_final.key

Chunh-Ang_2023_final.pdf

10:30 → 11:00 Break

11:00 → 12:20 Axion

11:00 Experimental searches for axions and axion-like particles

Speaker: Dr SungWoo Youn (IBS CAPP)

CAUBSM2023_YOUN_2.pdf

CAUBSM2023_YOUN_2.pptx

11:40 Detecting Hidden Photon Dark Matter via the Excitation of Qubits

Speaker: Prof. Takeo Moroi (Tokyo University)

moroi_CAU23.pdf

12:20 → 14:00 Lunch

14:00 → 16:20 Axion

14:00 Light axions in KKLT axiverse

Speaker: Prof. Kiwoon Choi (IBS CTPU)

kchoi_cau.bsm_new.pdf

14:40 Axionic cosmic string

Speaker: Prof. Minho Son (KAIST)

15:10 Axion fragmentation - Virtual

Speaker: Prof. Ryosuke Sato (Osaka University)

axionfragmentation.pdf

15:40 Detecting axions with chiral magnetic effects

We show that dark matter axions or axion-like particles (ALP) induce spontaneously alternat- ing electric currents in conductors along the external magnetic fields due to the (medium) axial anomaly, realizing the chiral magnetic effects. We propose a new experiment to measure this cur- rent to detect the dark matter axions or ALP. These induced currents are the electron medium effects, directly proportional to the axion or ALP coupling to electrons, which depends on their microscopic physics, and also suppressed by the Fermi velocity. My talk is based on my paper, arXiv: https://arxiv.org/abs/2207.06884

Speaker: Prof. Deog Ki Hong (Pusan National University)

acme_cau.pdf

18:00 → 21:00 Banquet

Thursday 23 February

09:30 → 10:30 Inflation / GW

09:30 The Status of Inflation - Virtual

Speaker: Prof. Daniel Green (UC San Diego)

26_Daniel Green.pdf

10:30 → 11:00 Break

11:00 → 12:10 Inflation / GW

11:00 Gravitational wave cosmology

Speaker: Prof. Hyung Mok Lee (Seoul National University)

gw-cosmology-BSM-hmlee.pdf

11:40 Gravitational Waves and Neutron Star Equation of State

Speaker: Dr Young-Min Kim (UNIST)

20230223-cau_bsm-ymkim.pdf

12:10 → 14:00 Lunch

14:00 → 15:40 Inflation / GW

14:00 SM in Weyl conformal geometry and inflation predictions - Virtual

Speaker: Prof. Dumitru Ghilencea (National Institute of Physics IFIN Bucharest)

2023-Seoul.pdf

14:40 Primordial gravitational waves from first-order phase transitions

Speaker: Prof. David Weir (Helsinki University)

Talk slides with animations

weir_cau2023.pdf

15:40 → 16:10 Break

16:10 → 18:00 Inflation / GW

16:10 Gravitational Lensing in Gravitational Waves - Virtual

Like electromagnetic waves propagating in the universe, gravitational waves (GWs) can be gravitationally lensed by massive objects between the distant source and the observer. Consequently, considering all known types of lensing configurations—governed by not only the relative position of the source to the lens but the size, shape, and distribution of the lens mass—is possible for the gravitational lensing of GWs. In this talk, I briefly introduce my several recent/ongoing works from searching microlensed GWs to parameter estimation of strongly lensed GWs.

Speaker: Dr Kyungmin Kim (Ewha Womans University)

2023_CAU_BSM_kkim.pdf

16:40 Continuous spectrum on cosmological collider

Speaker: Dr Shuntaro Aoki (Chung-Ang University)

CAUBSM_ShuntaroAoki.pdf

CAUBSM_ShuntaroAoki.pptx

17:10 Primordial Cosmic complexity and effect of reheating

We study the effect of reheating phase on the evolution of complexities in the primordial scalar fluctuations using the squeezed formalism. We study the evolution of the out-of-time correlator (OTOC) and the quantum discord starting from the inflationary epoch till the radiation-dominated epoch with different types of reheating phases. We find that, for a mode that re-enters the horizon after reheating, a finite reheating epoch clearly distinguishes the characteristic OTOC and quantum discord \textit{freeze-in} amplitude into three different classes that only depend on whether the equation of state parameter: $(i)$ $\wre=1/3$ $(ii)$ $\wre<1/3$, or, (iii) $\wre>1/3$ and not on particular reheating histories. Taking the central value of $n_s$ as and $\wre=0.25$ benchmark values, we found that the behavior of the complexities for all modes smaller than $1.27\times10^{16}\mathrm{Mpc^{-1}}$ can be classified as above. Conversely, for modes re-entering the horizon during reheating, the signature of EoS on the evolution of the complexities will be embedded in each separately.

Speaker: Dr Pankaj Saha (Seoultech)

cau20230223.pdf

17:30 Constraints on first-order phase transitions and relevant particle physics models - Virtual

Speaker: Prof. Ligong Bian (Chongqing University)

CAU's talk_Bian.pdf

Friday 24 February

09:30 → 10:40 Dark Matter

09:30 Some thoughts on the dark side of the Universe

Speaker: Prof. Pyungwon Ko (KIAS)

CAU 2023 pko.pdf

10:10 Gravitational portals during reheating

Speaker: Mr Simon Clery (IJCLab - Université Paris-Saclay)

Gravitational portals during reheating (CAU BSM 2023).pdf

10:40 → 11:10 Break

11:10 → 12:20 Dark Matter

11:10 Probing sterile neutrino dark matter in the PTOLEMY-like experiment

Speaker: Prof. Ki-Young Choi (Sungkyunkwan University)

CSnuB_Ptolemy_ChungAng.pdf

11:40 Halo-independent bounds on the non-relativistic effective theory of WIMP-nucleon scattering from direct detection and neutrino observations

In my presentation I will talk about the halo-independent bounds on the WIMP-nucleon couplings of the non-relativistic effective Hamiltonian that drives the scattering process off nuclei of a WIMP of spin 1/2. We will see that for most of the couplings the degree of relaxation of the halo-independent bounds compared to those obtained by assuming the Standard Halo Model is with few exceptions relatively moderate in the low and high WIMP mass regimes, where it can be as small as a factor of 2, while in the intermediate mass range (10 -- 200 GeV) it can be as large as 1000. An exception to this general pattern, with more moderate values of the bound relaxation, is observed in the case of the spin-dependent type WIMP-proton couplings with no or a comparatively small momentum suppression, for which WIMP capture in the Sun is strongly enhanced because it is driven by scattering events off Hydrogen, the most abundant target in the Sun. Within this class of operators the relaxation is particularly small for interactions that are driven by only the velocity-dependent term, for which the solar capture signal is enhanced because of the high speed of scattering WIMPs inside the strong gravitational field of the Sun.

Speaker: Dr Arpan Kar (Sogang University)

CAU_BSM_Arpan_Kar.pdf

12:00 Secluded Dark Sector and Muon (g − 2) in the Light of Modified Cosmology

Speaker: Dr Sougata Ganguly (Chungnam National University)

CAU_BSM_2023_SGanguly.pdf

12:20 → 14:00 Lunch

14:00 → 15:50 Flavor

14:00 Electroweak precision test of axion-like particles - Virtual

This is our on-going work that will be published soon. In the talk, we will discuss ALP contributions to EWPOs: there are several effects which have been overlooked in the literature and change the result drastically. We will also comment on the recent CDF result.

Speaker: Prof. Motoi Endo (KEK)

endo.pdf

14:40 Semi-invisible B and tau decays at Belle & Belle II

Speaker: Prof. Youngjoon Kwon (Yonsei Univ)

CAU2023_yjKwon_230224.pdf

15:20 New approaches to semi-invisible tau and B decays

Speaker: Prof. Chan Beom Park (Chonnam National University)

cau_202302_cbpark.pdf

15:50 → 16:20 Break

16:20 → 17:30 Flavor

16:20 Imprints of new physics via hadronic CP-violating observables

Speaker: Dr Sang Hui Im (IBS CTPU)

16:50 Quark masses and CKM hierarchies from S4' modular flavor symmetry

Speaker: Dr Junichiro Kawamura (IBS CTPU)

slide_CAUBSM_JKawamura.pdf

17:10 Status of heavy charged Higgs boson searches at the LHC

In this talk, I will discuss the status of heavy charged Higgs boson searches at the LHC focusing on the 2-Higgs-doublet model. I also discuss the potential of using top quark properties for both the discovery and the characterization of charged Higgs bosons.

Speaker: Dr Adil Jueid (IBS CTPU)

main.pdf