[G12] eta phi acceptance

[Mukesh Saini]

Reaction simulated was :

Gamma Proton -> Proton  X -> p K+ K- (Eta)

where the 3 charged particles are detected in CLAS and Eta is reconstructed through Missing mass.

----- Original Message -----
From: Dennis Weygand <weygand at jlab.org>
Date: Tuesday, January 11, 2011 1:45 pm
Subject: Re: eta phi acceptance
To: Mukesh Saini <msaini at fsu.edu>
Cc: g12 at jlab.org

> 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
> 
> 
> 
> 

Graduate Student,
Florida State University.