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FY2021 学術変革領域研究「ダークマター」シンポジウム （Online）
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Masahiro Takada
(Kavli IPMU)
Description
ダークマターの正体は何か？ - 広大なディスカバリースペースの網羅的研究
"What is dark matter? - Comprehensive study of the huge discovery space in dark matter"
Date: March 29 & 30, 2022
Venue: Online (Zoom): https://ipmu.zoom.us/meeting/register/tJEpd-upqTwjG91-C2dIUHNmI32YQXqoZAiD
Overview:
ダークマターはその存在が確実であり、宇宙の星や銀河を作った立役者だが、その正体は不明である。今までは素粒子物理学の要請から、約二桁の質量範囲のWIMPパラダイムに研究が集中していたが、2010年代の実験・観測で制限が厳しくなり、WIMP以外の候補への関心が高まっている。本研究領域では、ダークマターの質量で90桁にわたる広大なディスカバリースペースを網羅的にカバーするため、今までにない多角的な方法で理論から宇宙観測・地上実験にまたがる研究領域を拓くことを目指す。近年急速に技術が成熟したレーザー干渉計や、すばる観測・加速器・人工衛星 ・重力波・高エネルギーニュートリノを含むタイムリーな実験・観測を用いた研究を展開する。特に、日本が投資してきた既存の最先端施設を有効活用し、若手研究者のユニークなアイデアによって工夫を加えることでインパクトのある研究成果を導出することを目指す。天文学・物理学・工学の分野において融合的で飛躍的な研究の展開・開拓することを目指す。
本シンポジウムでは、各計画研究グループの研究、研究期間中 (R2-R6年度) に目指すゴール、F2021年度までの進捗状況を紹介する。
“Dark matter” certainly exists and plays a crucial role in formation of all cosmic structures such as galaxies. However, the nature of dark matter remains a mystery. As guided by particle physics, most efforts of dark matter search have been focused on Weakly Interacting Massive Particles (WIMP) candidates in the mass range of two order magnitudes, but observations and experiments in 2010’s did not find any clue of WIMP. There is now growing interest in non-WIMP dark matter candidates. In this research area, to comprehensively cover the vast discovery space of dark matter search spanning 90 orders of magnitudes in the mass scale, we aim at opening up research area using theoretical approaches, observations of the Universe and terrestrial experiments. Observation and experimental research groups will explore the nature of dark matter using new methods based on the unique idea/consideration from this research group and taking advantage of the cutting-edge observational data of the Universe.
At this online symposium, we would like to introduce the goal of this research program, and each research group will introduce the goals and current status of the research (FY2020-2024).
Members and PI of each research group:
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PI: Hitoshi Murayama (Kavli IPMU/UC Berkeley)
研究代表者 村山 斉（Kavli IPMU/バークリー大）
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Group A01: Fuminobu Takahashi (Tohoku U.) "light dark matter"
研究項目A01 高橋 史宜 （東北大）「軽いダークマターの生成と進化に関する理論的探究」
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Group A02 Kohta Murata (PSU/Kyoto U.) "heavy dark matter"
研究項目A02 村瀬 孔大 (PSU/Kyoto U.)「マルチメッセンジャーで探る重 いダークマター 」
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Group A03 Chulmoon Yoo (Nagoya U.) "macroscopic dark matter"
研究項目A03 柳 哲文 「原始ブラックホール・巨視的ダ ークマターの探究 」
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GroupB01 Yuta Michimura (U. Tokyo) "laser interferometer"
研究項目B01 道村 唯太（東京大）「重力波望遠鏡とレーザー干渉計 実験による超軽量ダークマター 探索 」
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Group B02 Masahiro Takada (Kavli IPMU) "Subaru spectroscopy"
研究項目B02 高田 昌広（Kavli IPMU）「すばる多天体分光観測によるダ ークマター探索 」
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Group B03 Satoshi Miyazaki (NAOJ) "wide-field, high-cadence imaging"
研究項目B03 宮崎 聡 （国立天文台）「広視野かつ高時間分解能天体イ メージングによるダークマター 探索 」
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Group B04 Noriko Yamasaki (ISAS) "the innovative technical method/data in the X-ray energy spacey"
研究項目B04 山崎 典子（ISAS）「X 線領域の観測技術の革新によ るダークマター探索」
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Group B05 Shohei Nishida (KEK) "electron-positron accelerator experiment"
研究項目B05 西田 昌平（KEK）「電子陽電子加速器によるダーク マター探索 」
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Group B06 Eiichiro Komatsu (MPA) "cosmic microwave background"
研究項目B06 小松 英一郎（MPA）「宇宙マイクロ波背景放射による ダークマター探索 」
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Group C01 Masahito Yamazaki (Kavli IPMU) "quantum gravity"
研究項目C01 山崎 雅人 「量子重力理論から迫るダークマ ター 」
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Group C02 Shin'ichiro Ando (GRAPPA, U. Amsterdam) "cosmic structure formation"
研究項目C02 安藤 真一郎（アムステルダム大）「宇宙構造形成理論から迫るダー クマター 」
Code of Conduct:
It is the policy of the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) that all members and visitors will conduct themselves in a professional manner that is welcoming and free from any form of discrimination, harassment, or retaliation. Members and visitors will avoid any inappropriate actions or statements based on individual characteristics such as age, race, ethnicity, gender, sexual orientation, marital status, nationality, or political affiliation. Disruptive or harassing behavior of any kind will not be tolerated. Harassment includes but is not limited to inappropriate or intimidating behavior and language, unwelcome jokes or comments, unwanted touching or attention, offensive images, photography without permission, and stalking. Members and visitors will treat each other with respect to create a collegial, inclusive, and professional environment at the Kavli IPMU.
Organizers:
Hitoshi Murayama (Kavli IPMU/Berkeley)
Masahiro Takada (Kavli IPMU)
Address:
Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU),
the University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa City, Chiba 277-8583, Japan
Contact
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- 09:30 → 09:45
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09:45
→
10:45
A01Convener: Masahiro Takada (Kavli IPMU)
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09:45
Status report of A01 group (light dark matter) 20mSpeaker: Takahashi Fuminobu (Tohoku U.)
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10:05
Cosmic Birefringence Triggered by Dark Matter Domination 20mSpeaker: Masaki Yamada (Tohoku U.)
- 10:25
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09:45
- 10:45 → 11:00
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11:00
→
11:15
Break 15m
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11:15
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12:15
A02Convener: Noriko Yamasaki
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11:15
Status report of A02 group (heavy dark matter) 15mSpeaker: Kohta Murase (PSU/Kyoto U. )
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11:30
Aged Dark Matter 15mSpeaker: Masato Yamanaka (Osaka City U.)
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11:45
Ultrahigh-Energy Constraints on Superheavy Dark Matter 15mSpeaker: Saikat Das (YITP, Kyoto U.)
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12:00
Subaru Hyper Supreme-Cam Meets Cosmic Ray Showers 15mSpeaker: Toshihiro Fujii (Hakubi Center, Kyoto U.)
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11:15
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12:15
→
13:30
Lunch break 1h 15m
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13:30
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14:30
B01Convener: Satoshi Miyazaki
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13:30
Status report of B01 group (dark matter search with interferometer) 30mSpeaker: Tomohiro Fujita
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14:00
Laser interferometric searches for ultralight dark matter 30mSpeaker: Koji Nagano (ISAS/JAXA)
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13:30
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14:30
→
15:30
B06Convener: Satoshi Miyazaki
- 14:30
- 14:40
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15:05
Implications of the cosmic birefringence measurement for the axion dark matter search 25mSpeaker: Obata Ippei (MPA)
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15:30
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15:45
Break 15m
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15:45
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16:45
C02Convener: Eiichiro Komatsu
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15:45
Status report of C02 (simulation) group 20mSpeaker: Shin'ichiro Ando (Amsterdam/Kavli IPMU)
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16:05
Cosmological prior for the J-factor estimation of dwarf spheroidal galaxies 20mSpeaker: Horigome Shunichi (Kavli IPMU)
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16:25
Classification of cosmic structures for galaxies with machine learning: connecting cosmological simulations with observations 20mSpeaker: Shigeki Inoue (Hokkaido U.)
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15:45
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16:45
→
17:00
DIMS Experiment 15mSpeaker: Fumiyoshi Kajino (Konan U.)
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17:00
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18:05
Flash talks for open-solicited researchesConvener: Masahiro Takada (Kavli IPMU)
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17:00
F01 Development of spectrometer for WISP DM searches 5mSpeaker: Junya Suzuki (Kyoto U.)
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17:05
F02 Detection experiment of dark-matter-axion microwave emitted from superconductors 5mSpeaker: Yasuhiro Kishimoto (Tohoku U.)
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17:10
F03 Probing the nature of dark matter in galaxy scales 5mSpeaker: Masashi Chiba (Tohoku U.)
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17:15
F04 Search for weakly interacting particles in KEK beam dump experiment 5mSpeaker: Yasuhito Sakaki (KEK)
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17:20
F05 Particle Physics Properties of DM probed by gamma-ray, LSBGs and IGM 5mSpeaker: Atsushi Nishizawa (Nagoya U.)
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17:25
F06 Comprehensive study of dynamical structures in the Galactic dwarf galaxies by Subaru and shedding light on the nature of dark matter 5mSpeaker: Kohei Hayashi (NIT, Ichinoseki College)
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17:30
F07 Toward search for light scalar field dark matter by interferometers 5mSpeaker: Teruaki Suyama (Tokyo Institute of Technology)
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17:35
F08 Search for TeV-Range Dark Matter with Electron and Positron Cosmic Rays 5mSpeaker: Holger Motz (Waseda U.)
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17:40
F09 Validation of CDM cosmology for large-scale structure formation by considering cosmic variance 5mSpeaker: Shogo Masaki (NIT, Suzuka College)
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17:45
F10 Constraining Mixed Dark-Matter models of WIMPs and Primordial Black Holes from CMB and radio observations 5mSpeaker: Hiroyuki Tashiro (Nagoya U.)
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17:50
F11 Axion search experiments from ground and space with new X-ray pixel detectors 5mSpeaker: Takeshi Tsuru (Kyoto U.)
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17:55
F12 Quantum Gravity Constraints on Dark Matters 5mSpeaker: Toshifumi Noumi (Kobe U.)
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18:00
F13 Search for Dark Matter of Axion and Dark Photon at the LHC-ATLAS Experiment 5mSpeaker: Junichi Tanaka (U. Tokyo)
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17:00
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-
09:30
→
10:30
A03Convener: Masahito Yamazaki
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09:30
Status report of A03 group (macroscopic dark matter) 15mSpeaker: Chulmoon Yoo (Nagoya U.)
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09:45
Primordial black holes: a generic DM candidate in supersymmetry and other extensions of the Standard Model 15mSpeaker: Alexander Kusenko (UCLA/Kavli IPMU)
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10:00
Primordial black holes and induced gravitational waves in light of the non-Gaussian tail 15mSpeaker: Yuichiro Tada (Nagoya U.)
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10:15
Probing primordial black holes through the stochastic gravitational wave background 15mSpeaker: Sachiko Kuroyanagi (FT UAM-CSIC/Nagoya U.)
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09:30
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10:30
→
10:45
Cosmological 21cm line observations to test scenarios of super-Eddington accretion on to black holes being seeds of high-redshifted supermassive black holes 15mSpeaker: Kaz Kohri (KEK)
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10:45
→
11:00
Exploring Dark Matter and Fundamental Physics with Atmospheric Collider 15mSpeaker: Volodymyr Takhistov (Kavli IPMU)
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11:00
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11:15
break 15m
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11:15
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12:15
C01Convener: Fuminobu Takahashi
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11:15
Status report of C01 group (ultimate theory) 30mSpeaker: Masahito Yamazaki (Kavli IPMU)
- 11:45
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11:15
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12:15
→
12:20
group photo! 5m
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12:20
→
13:30
Lunch break 1h 10m
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13:30
→
14:15
B03Convener: Shohei Nishida
- 13:30
- 13:55
- 14:15 → 14:30
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14:30
→
15:30
B04Convener: Shohei Nishida
- 14:30
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14:45
Development status of TES micro-calorimeters with 57Fe for solar axion search 15mSpeaker: Yuta Yagi (U. Tokyo/ISAS/JAXA)
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15:00
Development of Microwave SQUID Multiplexer for Multi-pixel X-ray TES Readout 15mSpeaker: Fuminori Hirayama (AIST)
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15:15
DM search by astronomical observation in X-ray 15mSpeaker: Nagomi Uchida (ISAS/JAXA)
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15:30
→
15:45
Break 15m
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15:45
→
16:45
B05Convener: Chulmoon Yoo
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15:45
Status report of B05 group (positron-electron accelerator) 20mSpeaker: Nishida Shohei (KEK)
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16:05
Search for the L_mu-L_tau Z' at Belle 20mSpeaker: Thomas Czank (Tokyo Metropolitan U.)
- 16:25
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15:45
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16:45
→
17:50
B02Convener: Chulmoon Yoo
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16:45
Status report of B02 group (Subaru spectroscopy) 5mSpeaker: Masahiro Takada (Kavli IPMU)
- 16:50
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17:10
Cosmological boost factor for dark matter annihilation at redshifts of z=10-100 using the power spectrum approach 15mSpeaker: Ryuichi Takahashi (Hirosaki U.)
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17:25
Constraining ultra-light dark matter with small scales observations 25mSpeaker: Elisa Ferreira (Kavli IPMU)
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16:45
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17:50
→
17:55
Closing remarks 5mSpeaker: Hitoshi Murayama (Kavli IPMU/Berkeley)
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09:30
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10:30
