[G8b_run] Good News: Tagger Sag and Momentum Corrections

[Charles Hanretty]

As far as I know, its at noon.  So yes.

-Chuck

On Wed, 21 Oct 2009, Eugene Pasyuk wrote:

> Just to make sure. We have a meeting tomorrow at noon EDT, right?
>
> -Eugene
>
>
> On Wed, 2009-10-21 at 16:40 +0100, Ken Livingston wrote:
>> Hi Volker,
>> Deep joy! Talk to you tomorrow.
>>
>> Cheers,
>> Ken
>>
>>
>> Volker Crede wrote:
>>> Hi all,
>>>
>>> very good news: we have finally obtained very reasonable results from
>>> the kinematic fitter. The updated pictures in the attachment are
>>> similar to those Charles sent out on Monday. The typical tagger sag
>>> plot (on page 1) shows a flat energy dependence after applying Mike's
>>> energy correction. Also, the pulls look good and the large
>>> displacements have disappeared.
>>>
>>> We have been quite wrong earlier this week; we entirely underestimated
>>> the effects of an energy-dependent energy correction and many thanks
>>> to Mike for asking us to apply his polynomial. Most of the issues Ken
>>> raised in yesterday's email receive now satisfying answers. The pulls
>>> look quite reasonable now and compare very well with Mike Williams
>>> results for the g10 data (see table on page 3). It looks like we have
>>> the systematics of the g8b data under control. The justification now
>>> for not applying pion momentum corrections is that we don't observe
>>> problems with the measured momenta.
>>>
>>> Best wishes and talk to you tomorrow in the meeting
>>>
>>>    Volker & Chuck
>>>
>>> ----------------------------------
>>>
>>> Volker Crede
>>> Assistant Professor
>>> Florida State University
>>> Department of Physics
>>> 206 Keen Building
>>> Tallahassee, FL  32306  USA
>>>
>>> Phone: 001 850 644-2423
>>> Fax: 001 850 644-4478
>>> crede at fsu.edu
>>> ------------------------------------------------------------------------
>>>
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>>
>>
>
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