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Psi3770 study with run802 of tpc in gridka [message #12262] Thu, 14 July 2011 10:58 Go to previous message
donghee is currently offline  donghee
Messages: 385
Registered: January 2009
Location: Germnay
first-grade participant
From: *kph.uni-mainz.de
Dear all,

I need to discuss for unexpected mass shape for Psi3770 in the data of run802 at gridka.

In attached file with the name of "psi3770_run802.eps",
you can find the mass distribution of
Psi3770 from D+(k-pi+pi+) and D-(k+pi-pi-) daughter without any vertex fitting as a first stage in the run802 data.

"psi3770_expected.eps" shows the distribution what I can expect, that is produced with old pandaroot version in my local.
I have some irregular events near at 3.9 GeV.

First question is that, run802 has some expecting bug during the production or should be ok?


Thank you for your hint...







 
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