[G12] Meeting today

[Craig Bookwalter]

Hi Paul,
    Miles's data was shown without corrections applied for energy lost 
in the target. Without this correction in place, one does indeed see a 
trend of increasing proton mass with increasing beam energy -- I've got 
some plots laying around showing what happens to the proton mass after 
energy loss in the target is corrected for, if you'd like to see.

--cb


Paul Stoler wrote:
> Hi Dennis et al:
> At today's research meeting Miles described the group's concern about 
> the variation in reconstructed proton mass with photon energy. I would 
> like to ask whether the role of proton straggling in the detector 
> materials has been satisfactorily taken into account. For example, the 
> proton undergoing multiple interactions with materials will a. lose 
> momentum and b. take a longer time to reach the TOF, both of which 
> will affect the calculated mass. Since I don't know the details of how 
> this is done in the user anal, this question is asked out of ignorance.
> Regards, Paul
> _________________________
> Paul Stoler
> Physics Department
> Rensselaer Polytechnic Institute
> Tel:(518)276-8388
> Email:stolep at rpi.edu
>
>
>
>
> On Feb 24, 2010, at 9:49 AM, Dennis Weygand wrote:
>
>> Reminder: we have a meeting today at 12:00
>>
>> Rm CC:B101
>>
>> Preliminary agenda:
>>
>> Diane/Sasha: Update on gflux
>> Gagik: Missing tracks
>> Heghine: Momentum correction status
>> g12 status talk
>>
>>
>> Analyses status:
>>
>> eta pi- Delta++ Diane
>> pi+ pi+ pi- Craig
>> Cascades Johann
>> Kaons Will/Mike
>> K+ K- Mukesh
>> KKpi  Miles
>>
>> Other business
>>
>>
>>
>> Call-in info:
>>
>> Telephone access: 1-877-643-6951 International: 1-302-607-2017 
>> Passcode: 24630562#
>>
>> Dennis
>> --
>> Dennis Weygand
>> weygand at jlab.org <mailto:weygand at jlab.org>
>> (757) 269-5926
>>
>>
>>
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>
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 Craig Bookwalter			FSU Office:  (850) 644 3808
 Department of Physics			JLab Office: (757) 269 5465
 Florida State University		craigb at hadron.physics.fsu.edu
 Tallahasse, FL 32306			craigb at jlab.org		


"One toke? You poor fool. Just wait till you see those (expletive) bats."
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