[Rivet] r/R binning in CDF 2004 jet shapes analysis

[Mario Martinez-Perez]

Dear Andy

 if you look at the PRD (see attached, see page 7 and 8)  the definition of the binning is fully explained. 
In the differential  and the integrated shapes the bin width is 0.1, and there are 
7 bins between 0. and 0.7.  Then we divide by 0.7 to express the x-axis in terms of 
r/R units. 

In the case of the integrated jet shapes the points are at 0.1/R, 0.2/R..... 0.7/R=1
In the differential case we put the points at the middle of the bin : 0.05/R, 0.15/R....etc..
note also that the differential shape includes a 1/delta(r/R) in the normalization. 

I hope this helps
Regards
Mario

==================================================
Mario Martinez-Perez                          
ICREA Research Professor 
Institut de Fisica d'Altes Energies (IFAE)
Edifici Cn. Facultat Ciencies                 
Universitat Autonoma de Barcelona
E-08193 Bellaterra (Barcelona), Spain
tf (IFAE): +34 93 581 4983
fax(IFAE): +34 93 581 1938
=================================================

----- Original Message -----
From: Andy Buckley <andy.buckley at durham.ac.uk>
Date: Monday, May 18, 2009 6:53 pm
Subject: Re: r/R binning in CDF 2004 jet shapes analysis
To: Mario Martinez-Perez <mmp at fnal.gov>
Cc: Rivet <rivet at projects.hepforge.org>

> Mario Martinez-Perez wrote:
> > Dear Andy
> > 
> >   Please find attached the .txt file with all numbers. 
> 
> Hi Mario,
> 
> Thanks for the rapid reply. But these tables also just reference the
> central (?) value of the x-position of the datapoints: r/R for the
> rho/Psi pT-binned plots, pT for the 1-Psi(r0 = 0.3) plot. There must
> have actually been some binning around these values, i.e. the first rho
> data point "0.71" corresponds to a bin of 0 < r/R < 1.4 or similar. Are
> these bin edge values recorded?
> 
> While it's conceivable that the integrated jet shape plots don't use the
> same profile binning as the differential ones, it would be strange (and
> inaccurate) not to. Similarly, I would guess that the 1-Psi(0.3) vs pT
> profile plot uses the binnings corresponding to the individual pT-bin
> rho/Psi plots: is that correct? If these guesses are correct, then all
> we are missing is the rho-plot r/R bin edges.
> 
> Thanks!
> Andy
> 
> -- 
> Dr Andy Buckley
> Institute for Particle Physics Phenomenology
> Durham University
> 0191 3343798 | 0191 3732613 | www.insectnation.org
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