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Re: EvtGen Lumi Theta-Distribution [message #10251 is a reply to message #10249]

Mon, 22 February 2010 12:26

StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino

first-grade participant

From: *to.infn.it

Hi,
I have followed what you have done, and I have almost the same plot as you, if I analyse the file with your macro.

I have run fast_sim to check the output. It seems each pz has a "spacing" of exactly 0.0005 GeV/c.
I have checked the output.evt file, but there all the numbers are not so spaced. For this reason, I think the problem stays not in EvtGen, but in our reading the ASCII file. Maybe there is some conversion/rounding which is cutting our momentum with a resolution of 500 keV -> even the angles suffer from this rounding.
At the moment I cannot find the source of such a problem, maybe somebody else could comment about.

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[Message index]

		EvtGen Lumi Theta-Distribution By: Mathias Michel on Tue, 16 February 2010 11:50
		Re: EvtGen Lumi Theta-Distribution By: StefanoSpataro on Tue, 16 February 2010 12:02
		Re: EvtGen Lumi Theta-Distribution By: Mathias Michel on Tue, 16 February 2010 12:36
		Re: EvtGen Lumi Theta-Distribution By: StefanoSpataro on Tue, 16 February 2010 12:55
		Re: EvtGen Lumi Theta-Distribution By: Mathias Michel on Tue, 16 February 2010 13:44
		Re: EvtGen Lumi Theta-Distribution By: Mathias Michel on Wed, 17 February 2010 10:20
		Re: EvtGen Lumi Theta-Distribution By: StefanoSpataro on Wed, 17 February 2010 11:20
		Re: EvtGen Lumi Theta-Distribution By: Mathias Michel on Wed, 17 February 2010 14:08
		Re: EvtGen Lumi Theta-Distribution By: Mathias Michel on Mon, 22 February 2010 08:53
		Re: EvtGen Lumi Theta-Distribution By: StefanoSpataro on Mon, 22 February 2010 12:26
		Re: EvtGen Lumi Theta-Distribution By: Mathias Michel on Tue, 23 February 2010 12:37
		Re: EvtGen Lumi Theta-Distribution By: StefanoSpataro on Thu, 25 February 2010 18:56
		Re: EvtGen Lumi Theta-Distribution By: Stefan Pflueger on Tue, 04 September 2012 11:00

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