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RE: PrimEx MC on Wiki and Physics Analysis Page




Hi, Matt,

I agree with you that we can do it in the next step. Since eta-->pi0+gamma+gamma and 
eta-->pi0+pi0 are very similar both in the rate and kinematics, however, it would be good for us to see how well we can separate them in the calorimeter at the begining.


Liping 

-----Original Message-----
From: Matthew Shepherd [mailto:mashephe@indiana.edu]
Sent: Tue 8/5/2008 4:07 PM
To: Gan, Liping
Cc: halld-physics@jlab.org
Subject: Re: PrimEx MC on Wiki and Physics Analysis Page
 

Hi Liping,

The current upper limit for the 2 pi^0 channel is at the measured rate  
for pi^0 gamma gamma.  I would suggest we first demonstrate that we  
have sensitivity to pi^0 gamma gamma (the same final state) at the  
expected rate before trying a new channel.

Cheers,

Matt


On Aug 5, 2008, at 4:02 PM, Gan, Liping wrote:

> Hi, Matt,
>
> It is a great idea to keep track of status of PrimEx MC. I would  
> suggest to add eta--->pi0+pi0 channel  which allow us to test PC  
> symmetry. I can send you a generator in the next week.
>
>
> Liping
>