GSI Forum: Event Generators » Large momenta from BOX genarator

Home » PANDA » PandaRoot » Event Generators » Large momenta from BOX genarator

Show: Today's Messages :: Show Polls :: Message Navigator

Re: Large momenta from BOX genarator [message #25364 is a reply to message #25351]

Mon, 23 November 2020 19:14

AndreiSemenov
Messages: 6
Registered: June 2019
Location: Dubna, Russia

occasional visitor

From: *bb.netbynet.ru

Hello,
Positions for particles with large momenta have relatively larger coordinates. Do not know how to draw them in a representative way.
I studied P3Cov() method of RhoCandidate that gives 3x3 covariance matrix of momentum vector. Estimating the std.dev. as square root of the sum of diagonal elements, it correlates with large momenta. The plot for correlation of this std.dev. and actual error for momentum of 5 GeV muon is attached, X is actual error and Y is std.dev. Most events have std.dev. 0.2 and actual error up to 0.5 GeV, but there are several events with std.dev. 0.2 and actual error 3 - 4 GeV, near 100% of actual value. Are there some ways of rejecting events with badly measured momenta?

index.php?t=getfile&id=11332&private=0

Attachment: errors.jpeg
(Size: 61.09KB, Downloaded 73 times)

Report message to a moderator

[Message index]

		Large momenta from BOX genarator By: AndreiSemenov on Wed, 18 November 2020 15:52
		Re: Large momenta from BOX genarator By: Tobias Stockmanns on Wed, 18 November 2020 17:04
		Re: Large momenta from BOX genarator By: AndreiSemenov on Wed, 18 November 2020 19:31
		Re: Large momenta from BOX genarator By: Tobias Stockmanns on Thu, 19 November 2020 07:18
		Re: Large momenta from BOX genarator By: AndreiSemenov on Mon, 23 November 2020 19:14

Previous Topic:

PYTHIA6 usage

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Thu Jun 24 08:49:56 CEST 2021

Total time taken to generate the page: 0.02241 seconds