Re: Possible talk on MuCap g_P measurement in your low-energy sessions?

[Steven Clayton <smclayto@npl.uiuc.edu>]

Dear Prof. Schumacher,

Here is the abstract (also submitted on the web page):

"Measurement of Muon Capture on the Proton"
The goal of the MuCap experiment is a 1% precision
measurement of the muon capture reaction on the free proton.
This determines directly the pseudoscalar form factor g_P to 7%.
This basic quantity is predicted theoretically with high
precision, but the experimental situation is quite controversial.
The new experiment should be an unambiguous measurement of g_P and
a sensitive test of the chiral symmetry of QCD at low energies.
At the end of 2004, the muCap detector was completed and
commissioned, and first physics data were taken.  The analysis
of these data is in an advanced stage and is expected to yield a
first result for the muon capture rate to about 3% precision
within this year.  Further improvements to the detector, towards
reaching the design goal, were made for the 2005 and present 2006
data runs.

Thanks,
Steven Clayton


On Fri, Mar 31, 2006 at 01:44:37PM -0600, David W Hertzog wrote:
> Reinhard,
> 
>             We have a nearly complete analysis of a new measurement of
> g_P, in the MuCap experiment that Peter Kammel is running.  Steve
> Clayton will come to the conf and he is the leader of the analysis for
> his thesis.  The analysis will be "done" by the time of the meeting but
> the result will remain "blinded" for a couple months as Steve and a 2nd
> student do comparisons and because MuCap collaboration is running from
> roughly now thru mid June and won't have a chance to unblind anyway.
> But, there is a lot of physics in what they have done so far and it is
> related to XpT and some physics in your sessions.  Steve is starting to
> look for job and this conference is a great place for him to run into
> lots of potential people and topics that are out there.  
> 
>  
> 
>             We'll prepare an abstract and send it to you, but I'm giving
> you a head's up that this is coming and, by way of this email, a link
> for Steve to contact you.  I am afraid the Abstract submission page
> (we'll do that) isn't fully running like we had hoped.
> 
>  
> 
>             Best,
> 
>             Dave
>