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Re: Lambda Lambdabar simulations [message #16331 is a reply to message #16318]

Wed, 16 April 2014 10:30

donghee
Messages: 385
Registered: January 2009
Location: Germnay

first-grade participant

From: *kph.uni-mainz.de

Hi,

The lambda-lambdabar data has been tested with phase space mode and in addition a special detector has been introduced to see acceptance behaviour of anti-lambda as you suggested.
Quote:

fastSim->AddDetector("ScSttAlone", "thtMin=0. thtMax=160. ptmin=0.0 pmin=0.0 pRes=0.01 thtRes=0.001 phiRes=0.001 efficiency=1.0");

Efficieny increase clearly, since the reconstructed distribution is not scaled any more.
But still acceptance is going down at cos(theta) = -1 and 1.

I think that the pure acceptance can be understood with a V0 decay. If the lambda or lambdabar decay far from the target region, daughter tracks could not be reconstructed. It leads to drop down of acceptance because forward boosted lambdabar(or lambda) flight a long distance.
As far as I understand, all track candidates defined in the fast simulation are coming closely from target region.

index.php?t=getfile&id=7812&private=0

Best wishes,
Donghee

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[Message index]

		Lambda Lambdabar simulations By: Karin Schönning on Tue, 15 April 2014 12:10
		Re: Lambda Lambdabar simulations By: StefanoSpataro on Tue, 15 April 2014 13:03
		Re: Lambda Lambdabar simulations By: donghee on Tue, 15 April 2014 14:21
		Re: Lambda Lambdabar simulations By: StefanoSpataro on Tue, 15 April 2014 14:23
		Re: Lambda Lambdabar simulations By: Klaus Götzen on Tue, 15 April 2014 14:51
		Re: Lambda Lambdabar simulations By: donghee on Wed, 16 April 2014 10:30
		Re: Lambda Lambdabar simulations By: Karin Schönning on Wed, 16 April 2014 10:47
		Re: Lambda Lambdabar simulations By: StefanoSpataro on Wed, 16 April 2014 12:28
		Re: Lambda Lambdabar simulations By: donghee on Thu, 17 April 2014 14:56
		Re: Lambda Lambdabar simulations By: StefanoSpataro on Thu, 17 April 2014 15:03
		Re: Lambda Lambdabar simulations By: donghee on Thu, 17 April 2014 16:09
		Re: Lambda Lambdabar simulations By: StefanoSpataro on Thu, 17 April 2014 17:10
		Re: Lambda Lambdabar simulations By: Klaus Götzen on Thu, 17 April 2014 17:34
		Re: Lambda Lambdabar simulations By: donghee on Fri, 18 April 2014 10:52
		Re: Lambda Lambdabar simulations By: StefanoSpataro on Fri, 18 April 2014 11:01
		Re: Lambda Lambdabar simulations By: Karin Schönning on Thu, 24 April 2014 11:39
		Re: Lambda Lambdabar simulations By: Bertram Kopf on Tue, 15 April 2014 15:19
		Re: Lambda Lambdabar simulations By: Karin Schönning on Tue, 15 April 2014 15:27
		Re: Lambda Lambdabar simulations By: donghee on Wed, 16 April 2014 11:00
		Re: Lambda Lambdabar simulations By: StefanoSpataro on Wed, 16 April 2014 12:19
		Re: Lambda Lambdabar simulations By: donghee on Wed, 16 April 2014 12:29
		Re: Lambda Lambdabar simulations By: donghee on Fri, 25 April 2014 02:00
		Re: Lambda Lambdabar simulations By: asanchez on Fri, 25 April 2014 12:41
		Re: Lambda Lambdabar simulations By: StefanoSpataro on Fri, 25 April 2014 12:56
		Re: Lambda Lambdabar simulations By: asanchez on Fri, 25 April 2014 13:04
		Re: Lambda Lambdabar simulations By: StefanoSpataro on Fri, 25 April 2014 13:06
		Re: Lambda Lambdabar simulations By: asanchez on Fri, 25 April 2014 13:57

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