[G12] new secondary beam observation

John Price jprice at csudh.edu
Mon Mar 5 13:55:53 EST 2018


Hi Ken:

I would point out that, because pp scattering is already
well-understood, it is more important that we show we can do that
correctly.  Otherwise, there is no reason to believe our results for
Lambda p.

John

On Mon, 2018-03-05 at 18:54 +0000, Hicks, Kenneth wrote:
> Hi John,
> 
> I see a similar peak for N-N scattering in my analysis.  As for the Lambda-N scattering, the hard part is to get the normalization correct.  It will take a lot more effort before it can be demonstrated that we get the correct N-N scattering cross section, and even more time before we can do something quantitative with any other particles.
> 
> Ken
> 
> 
> On 3/5/18, 12:59 PM, "G12 on behalf of John Price" <g12-bounces at jlab.org on behalf of jprice at csudh.edu> wrote:
> 
>     Hi all:
>     
>     It occurs to me that, if we can observe Lambda-proton elastic scattering
>     in g12, we should also be able to see something easier like
>     proton-proton scattering.  I looked over the data again, requiring only
>     two protons in the final state, and plotted the missing mass in "X p -->
>     p p".  The attached resulting plot has approximately 1.2 million events
>     in the peak above background.
>     
>     We don't have a g12 meeting this week, but I thought y'all might like to
>     see this.  My life is getting interesting...
>     
>     John
>     
>     -- 
>     John W. Price
>     Professor and Chair, CSUDH Department of Physics
>     Coordinator, Science, Mathematics, and Technology Program
>     Director, Office of Undergraduate Research, Scholarship, and Creative
>     Activity
>     310-243-3403
>     
> 

-- 
John W. Price
Professor and Chair, CSUDH Department of Physics
Coordinator, Science, Mathematics, and Technology Program
Director, Office of Undergraduate Research, Scholarship, and Creative
Activity
310-243-3403



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