[G12] eta phi acceptance

Dennis Weygand weygand at jlab.org
Tue Jan 11 13:45:33 EST 2011


What is the reaction exactly? gamma p -> phi(1680) p, K+ K- and proton detected in CLAS? and eta reconstructed by missing mass?

On Jan 11, 2011, at 12:11 PM, Mukesh Saini wrote:

> Hello,
> 
> I simulated Phi-Eta production for a photon with energy between 4.4-5.6 GeV. For a Phi-Eta resonance around 1680 MeV the acceptance was approximately 0.0035 or 0.35% for CLAS with g12 experimental geometry.
> 
> As for the estimated number of Phi-Eta events in the g12 data sample from my analysis, its ~1550 Phi's and Eta's that pass my Cuts. After I use Side-Band subtraction though it comes down to about 1000.
> 
> Mukesh.  
> 
> ----- Original Message -----
> From: Dennis Weygand <weygand at jlab.org>
> Date: Monday, January 10, 2011 2:36 pm
> Subject: eta phi acceptance
> To: g12 at jlab.org, Mukesh Saini <msaini at fsu.edu>
> 
>> Muskesh,
>> 
>> based on gsim, can you give me a rough estimate for the acceptance 
>> of a meson of mass ~1680 MeV decaying to phi eta in g12?
>> How many phi eta events do you have?
>> 
>> Dennis
>> 
>> 
>> --
>> Dennis Weygand
>> weygand at jlab.org
>> (757) 269-5926
>> 
>> 
>> 
>> 
> 
> Graduate Student,
> Florida State University.
> <Phi-Eta-Acceptance.png><c5.png>

--
Dennis Weygand
weygand at jlab.org
(757) 269-5926






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