Heavy Flavor Averaging Group Phone Meeting

Friday 21 November 2003

Minutes:

• Jim Smith, Marina Artuso, Andreas Hoecker, David Kirkby, Urs Langenegger, Vera Luth, Olivier Schneider, Marjorie Shapiro, Yoshi Sakai, Paoti Chang.

• No schedule problems forseen.
• New Opal chi-bar value brings average chi-bar up by 1.5-sigma and moves B_s fraction up to 10.7%
• New Delphi lifetime moves chi-bar down.
• Net change since last PDG is small, but there have been relatively large swings in between.

• No schedule problems forseen.
• DELPHI result submitted for publication. They are now responding to referee comments. Not yet included in the average, but will prepare average including them as a contingency.

• No schedule problems forseen.
  
• Not many new results, and most already included as preliminary for summer conferences.

• PDG have not asked for rare averages.
• Will try to prepare an update anyway for cross-checking against PDG.

• Will form an informal study group of experts from BABAR, BELLE, CLEO to make recommendations.
• Jim Smith will draft the charge to this group.
• Study group members to be appointed informally, so it can start working soon, rather than by formally requesting names from spokepersons. BELLE & CLEO already have people in mind. BABAR will find someone offline.
  
• Duration of study group's work is expected to be short. The work product is a set of written recommendations.

• Scope would initially be "B decays to open charm that are relevant to CP", e.g., B -> D(*) K(*).
• Will go through official channels to identify members of a new HFAG subgroup. Yoshi & David will contact spokespeople to get this started.
  
• Plan to provide first averages from this group for Summer 2004 conferences.

• Members should give feedback on Yoshi's draft of the short blurb that will be included in the 2003 RPP.
• Will start making writing assignments based on the outline presented shortly after the RPP deadline, for a longer paper describing methodology, input parameters, and results.