iTHEMS Dark Matter working group was launched to understand "dark matter" inclusively by bridging theory, collider experiments, direct detection experiments, and indirect searches. The main activity is that we have invited speakers from a variety of fields related to DM and have held online seminar series (https://sites.google.com/view/rikendmwg/home).

This year, fortunately, we are happy to hold the hybrid workshop.

The workshop aims to gather the current knowledge and ideas for DM search and stimulate discussion for future directions.

For this purpose, we are planning to invite researchers from various experimental and theoretical fields such as:

• Collider theory: Kentarou Mawatari (Iwate Univ.)

• Collider analysis: Satoshi Shirai (Kavli IPMU)

• Collider experiment: Shohei Nishida (KEK)

• Direct detection theory: Masahiro Ibe (ICRR)

• Direct detection experiment: Masatoshi Kobayashi (ISEE, Nagoya Univ.)

• Inverse direct detection: Yohei Ema (Minnesota Univ.)

• Paleo Detector: Sebastian Baum (Stanford Univ.) *online

• GRAMS experiment: Tsuguo Aramaki (Northeastern Univ.) *online

• Cosmic-ray measurements in space: Holger Motz (Waseda Univ.)

• High-energy gamma-ray observations: Tomohiro Inada (THU/ICRR)

• Dark matter halo profile in the Milky Way: Maria Benito (Tallinn Univ.) *online

• N-body simulations: Ken Osato (Chiba Univ.)

• Relic abundance theory: Andrzej Hryczuk (NCBJ) *online

• Warm dark matter cosmology: Tomo Takahashi (Saga Univ.)

• Asymmetric dark matter: Ayuki Kamada (Warsaw Univ.) *online

• Axion-like particle search with neutron stars: Naoya Kitajima (Tohoku Univ.)

• Primordial black hole theory: Yuuiti Sendoda (Hirosaki Univ.)

• Sub-eV dark matter search: Anastasia Sokolenko (Univ. of Chicago) *online

We also hold poster sessions using Slack aiming to stimulate discussion of related physics in varieties of fields.

We highly welcome your contributions.

Code of Conduct:

We are committed to making this workshop productive and enjoyable for everyone, regardless of (alphabetically) age, career status, cultural background, disability, ethnicity, gender identity, marital status, nationality, physical appearance, political affiliation, pregnancy, race, religious beliefs, sexual orientation, socio-economic status, and family status. We will not tolerate the harassment of participants in any form. Please follow these guidelines:

• Behave professionally. Be kind to others. Do not insult or put down other attendees.

• Harassment and sexist, racist, or exclusionary comments or jokes are not appropriate. Harassment includes sustained disruption of talks or other events, inappropriate physical contact, sexual attention or innuendo, deliberate intimidation, stalking, and photography or recording of an individual without consent. It also includes offensive comments related to gender, sexual orientation, age, career status, disability, physical appearance, body size, race, family situation, nationality, or religion.

• Professional, courteous, and polite attitudes are highly appreciated.

All the attendees of the workshop are responsible for keeping a comfortable environment for everybody. The organizers take the charge throughout the workshop.

Please do not hesitate to contact by emailing hirosima_at_sci.u-toyama.ac.jp and kohei.hayashi_at_g.ichinoseki.ac.jp if the participants believe that they have witnessed or been negatively impacted by a possible violation of the Code of Conduct.

Participants asked to stop any inappropriate behavior are expected to comply immediately. Attendees violating these rules may be asked to leave the event at the sole discretion of the organizers.

CONTACT US：

Please email us at

dmwg.ithems_at_gmail.com (_at_ -> @)