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