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Details about Snowmass 2021 can be found on the official page: https://snowmass21.org/

The European Strategy Group (ESG) process has nearly completed. The next major decadal strategy effort is the US Snowmass process, which will be followed by P5 panel recommendations, which in turn will guide funding and resource decisions.

The first issue for the US Snowmass process is the submission of short 2-page LOI's by Aug 30th and longer documents before summer of next year (2021). Detailed scientific discussions will take place during the next year and a large close-out meeting is planned in Seattle, WA in the summer of 2021.

The following draft LOIs have been prepared for Belle II:

1. Belle II/SuperKEKB upgrades and overview

Coordinator: Tom Browder (teb@phys.hawaii.edu)

Snowmass_2021_LOI-Belle II+SuperKEKB_Upgrades+Overview_v2.pdf

Almost final draft, needs topical group code for Computation Frontier which was missing from the Comp Frontier LOI: B2_LOI_AlanSchwartzTemplate-Upgrades.pdf

2. Belle II/SuperKEKB capabilities for B physics

Coordinator: Soeren Prell (prell@iastate.edu)

Draft 1.0

Draft 2.0 (textual changes)

Draft 3.0 (final) - changed cover page to common format, edits addressing comments from Alan, Kevin, and Tom

3. Belle II/SuperKEKB capabilities for the dark sector

Coordinators: Chris Hearty (hearty@physics.ubc.ca), Kevin Flood (kflood@hawaii.edu)

Draft V2

Draft V3: add dark photon search to pi+ pi- final state

Draft V4: add paragraph on long-lived particles

Draft V5: add paragraph on sterile neutrinos in tau decay

B2_LOI_AlanSchwartzTemplate-DarkSector-Final.pdf: uses Alan's Charm LOI as a title page template; has final author list; edits suggested by final reader (Soeren)