Welcome to the Belle II wiki pages. Only the Belle II Public WebHome page can be viewed publicly without login. In order to access the Belle II Internal WebHome, users need credentials (account_name/password) to login. Please refer to Belle II User Registration. 

Belle II Meta Search

Search through "Belle II" space

----- Give peace a chance! -----

Your DESY password is valid for 6 month. You will get a series of warnings by email, starting 20 days in advance. Please make sure to renew your password in time!

In case of questions or problems check Belle II Registration and Account FAQ !

The most frequent user issues:

Problems with account or password? b2-helpdesk_AT_belle2.org (NOT uco_AT_desy.de). Resetting a lost password might take some time! Please denote your account_name.

Maintenance Announcements

(please login to see details)


In order to become a Belle II author and/or to check your eligibility please refer to the page Belle II Authorship by Leo Piilonen.

You can get access to the Belle II authorship service authors.belle2.org beyond your Belle II membership. On request to b2-helpdesk@belle2.org your account will be move to a group 'b2author' which allows to access the service

2019-02-19 Belle II Indico

In order to make use of the new Belle II Indico Instructions make sure you log in to indico.belle2.org with your DESY credentials (Login with LDAP using your account name). You will then become part of the Indico  Belle II group which allows you to view the agendas.

2018-05-28 Group Pages

We have created a top page Belle II Group Pages under which Belle II communities or groups may set up own pages.

2018-05-25 DESY Data Privacy Policy

As of 25 May 2018 the DESY Data Privacy Policy is mandatory due to regulations of the European Union.

Becoming a Belle II Member and Getting Access to the Belle II Collaborative Services and Tools

In order to gain access to the DESY analysis facility (NAF)  consider Belle II Requesting Additional Resource Access (login).

Collaborative Services

We list here a selection of Belle II Collaborative Services (B2CS) and their URLs for easy access. Please do not ignore the documentation. All services require a login with the DESY credentials (account_name/password), not email address. Also note Belle II Support Contacts.

Note: Most of the Grid services run at KEK (DIRAC, VOMS (master)) or at BNL (FTS, RUCIO). Those services are independent!

Belle II Wiki

Recently Updated



Favorite Pages

There are currently no pages on your favorites list. You can add pages to this list by selecting Favorite from the Tools menu on the page you're viewing.