Pi0 Polarizability Meeting Mar 13, 2020
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Contents
Meeting Information
Meeting Time And Location
10:00 am ET (JLab time)
CC F228
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Action Items
- ChiPT calculation to one loop with Coulomb photon (Svetlana and Aleks)
Tentative Agenda
- Announcements
- Action Items
- Theory update
- Experiment update
- Comments on draft proposal
- Backgrounds to be simulated
- Background hits
- BGGEN (PYTHIA)
- eta production
- Backgrounds to be simulated
- Other business
- Next meeting
Minutes
Attending: Elton, David, Beni, Alex, Mark, Svetlana, Rory, Jose, Ilya.
- Announcements
- Marc Vanderhaeghen
- Svetlana met with Marc Vanderhaeghen, Igor Danilkin and also Vladimir Pascalutsa when she was in Germany.
- They are interested in our project. Here is a note that Svetlana passed on to us from Marc:
- Marc Vanderhaeghen
From: Vanderhaeghen, Univ.Prof.Dr. Marc <vandma00@uni-mainz.de> Sent: March 9, 2020 11:36 AM To: Barkanova, Svetlana <sbarkanova@grenfell.mun.ca> Cc: Aleksejevs, Aleksandrs <aaleksejevs@grenfell.mun.ca>; Danilkin, Dr. Igor <danilkin@uni-mainz.de> Subject: Re: draft of collaboration talk Hi Svetlana, hi Alex, I am responding to your enquiry about the pi0 polarizability and am also forwarding this e-mail to my collaborator Igor Danilkin. As I briefly told you, the pi+ polarizability which enters also the g-2 extraction is well in agreement between dispersive estimates and ChPT (see fig. 28 left panel of our recent review paper, attached showing also the Compass data point). However for pi0, the same calculation, is an order of magnitude different (and opposite sign) between Chpt and dispersion relation (both the Mainz and Bern dispersive analysis confirm this). So it would be a crucial input to have an independent result for the pi0 polarizability. We would indeed be very interested to going this effort, and can provide the calculations for this channel. Cheers, Marc
- Action Items
- Theory update
- Experiment update
- Comments on draft proposal
- Backgrounds to be simulated
- Background hits
- BGGEN (PYTHIA)
- eta production
- Backgrounds to be simulated
- Other business
- Next meeting