Re: [BLAST_ANAWARE] Error Propagation in ROOT -- beware!

From: Adrian T Sindile (asindile@cisunix.unh.edu)
Date: Thu Apr 15 2004 - 22:24:27 EDT


Hi, Chris!
Per your suggestion, I tried Jason's GetAsymmetry() function.
I am pretty sure I get the same error bars using both my older way and his
ROOT contributed function.
Attached is a plot of left dA/A and right dA/A obtained for 26 KCoulombs
integrated charge from December (about two weeks of running - between
December 9th and December 23rd).

Adrian

>
> > Try jason's GetAsymmetry() function, and I'm pretty sure you will get a
> > different result. The naming doesn't matter; just that leftThPlus is
> > used both in the numerator and denominator.
>
> I will try Jason's function - but please note that even show_ep_asym.C
> written by Jason does not use that function...
>
> I will probably end up propagating everything by hand, just to make sure
> there are no questions about it.
> Cheers!
>
> Adrian
>

-- 

------------------------------- Adrian Sindile Research Assistant Nuclear Physics Group University of New Hampshire phone: (603)862-1691 FAX: (603)862-2998 email: asindile@alberti.unh.edu http://einstein.unh.edu/~adrian/


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