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Re: Lambda Lambdabar simulations [message #16352 is a reply to message #16338] Thu, 17 April 2014 14:56 Go to previous messageGo to previous message
donghee is currently offline  donghee
Messages: 385
Registered: January 2009
Location: Germnay
first-grade participant
From: *kph.uni-mainz.de
Dear Stefano,

I want to show you theta distribution for anti-proton and pi+ from the antilambda decay in the lab frame.
Each 2D plots show that thata_antiproton vs theta_pion in the lab frame for the case of generated and reconstructed.

I used LambdabarLambdaPol 1.64GeV model and a perfect detector, which covers from 0 to 160 degree with perfect resolution and efficiency.
In each panel, you can find the dependence of theta_{lab} distribution on the different cos(theta)_{CM} region.
I think that Panel2(Right up) is quite important clue for the acceptance lost.
In lab frame, theta between 0 and 7 degree we could not reconstruct at all, due to V0 decay topology.

index.php?t=getfile&id=7814&private=0
index.php?t=getfile&id=7815&private=0

Best wishes,
Donghee
 
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