| Re: box generator [message #4276 is a reply to message #4275] |
Mon, 21 May 2007 10:30   |
Pablo Genova
Messages: 32
Registered: May 2007
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continuous participant |
From: *PV.INFN.IT
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Hi Stefano,
so we misunderstood the aim of the box generator.
The box generator is not a generator which generates uniformly on the solid angle, but it generates uniformly on theta, phi angles.
I mean, if one wants to generate isotropically in 3D with a fixed total momentum, or fixed transverse momentum, which is a common request, one has to generate uniformly on cos\theta and \phi and the cbmbox generator is NOT correct for this.
I thought it were!
I think it is really useful to have a 3d uniform generator not to be confused with the present box generator.
I do not understand completely the need for uniform generation on theta and phi variables, but this is not important.
ciao, Pablo
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