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Ideal PID in full simulation [message #16487]

Wed, 30 April 2014 15:09

Lu Cao
Messages: 77
Registered: February 2013

continuous participant

From: *ikp.kfa-juelich.de

Dear all,

I tried to use ideal PID algorithm in the full simulaiton with PidAlgoIdealCharged (true particle probability=1, other p=0), but the criteria "Loose", "Tight", "VeryTight" return 0 candidates. This problem has been found since #24328, but the older version #24300 works fine.

Could someone check or fix it?
Thanks in advance.

Best,
Lu

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Re: Ideal PID in full simulation [message #16493 is a reply to message #16487]

Wed, 30 April 2014 15:28

Ralf Kliemt
Messages: 507
Registered: May 2007
Location: GSI, Darmstadt

first-grade participant

From: *pool.mediaWays.net

Hello Lu,

Do you specify "PidAlgoIdealCharged" in your FillList or leave it out? You should specify it.
e.g.

Code: [Select all] [Show/ hide]

RhoCandList pions;
theAnalysis->FillList(pions,"PionLoose","PidAlgoIdealCharged");

Cheers
Ralf

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Re: Ideal PID in full simulation [message #16495 is a reply to message #16493]

Wed, 30 April 2014 15:46

Lu Cao
Messages: 77
Registered: February 2013

continuous participant

From: *ikp.kfa-juelich.de

Hi Ralf,

It works fine after specifying. I didn't take care about it, since the tutorial said "When this parameter is not specified, it defaults to PidAlgoIdealCharged."
Thanks for your help.

Best,
Lu

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Re: Ideal PID in full simulation [message #16496 is a reply to message #16495]

Wed, 30 April 2014 15:51

Klaus Götzen
Messages: 293
Registered: June 2006
Location: GSI

first-grade participant

From: *gsi.de

Hi,

indeed it was like this, but we removed it for the Fast Sim I believe. I should update the tutorial in that respect. Thanks for reminding us!

Best,
Klaus

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Re: Ideal PID in full simulation [message #16544 is a reply to message #16496]

Thu, 08 May 2014 16:21

Elisa Fioravanti
Messages: 84
Registered: January 2008

continuous participant

From: *fe.infn.it

Dear all,

I'm using the full simulation with Ideal PID.
I wrote:

theAnalysis->FillList(muplus, "MuonVeryTightPlus","PidAlgoIdealCharged");
theAnalysis->FillList(muminus, "MuonVeryTightMinus","PidAlgoIdealCharged");

but if I change VeryTight with Loose or Tight, the number of
events is always the same.
(I tried also with the standard macro of the psi(2S)->J/psi pi pi in macro/run)

The pandaroot version is 24830.
What is the standard procedure to set the Ideal PID? Where am I wrong?

Thank you in advance
Elisa

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Re: Ideal PID in full simulation [message #16545 is a reply to message #16544]

Thu, 08 May 2014 16:27

Ralf Kliemt
Messages: 507
Registered: May 2007
Location: GSI, Darmstadt

first-grade participant

From: *gsi.de

Hello Elisa,

This behaviour is exactly as you observe it. "Ideal" PID means that a candidate is associated to it's Monte-Carlo true PID. The values in PidAlgoIdealCharged are 0 for the wrong particle type and 1 for the correct type. Cutting at 0.9 (VeryTight) or at 0.2 (Loose) will not alter anything.

Cheers
Ralf

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