[G12] new secondary beam observation

[Hicks, Kenneth]

Hi John,

I’m not disagreeing with you at all.  My only point is that getting a cross section (for this secondary-scattering mechanism) is easier said than done!!  Please see the talk by my student at the upcoming CLAS Collaboration meeting on this topic.

Ken

On 3/5/18, 1:55 PM, "John Price" <jprice at csudh.edu> wrote:

    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