In fact, I just read the paper and I don't immediately (more then 10 minutes staring) understand the method that they use (using probability generating functions).
Is this method for tot X-dection new for this paper? I believe that the previous paper [ref 15] uses a more conventional method.
If it was checked that the more conventional method gives results that are (more or less) consistent, I'm happy to approve it.
Phrased otherwise: how did they check that is not nonsense that comes out of their PDGs?
- marcel

On 1 February 2018 at 13:45, Patrick Koppenburg <patrick.koppenburg@cern.ch> wrote:
Dear all,

I read the draft this morning. I paste below my comments.

I encourage people interested in statistics to have a look. The unfolding procedure is quite involved.

Cheers,

Patrick

#==================================================

Dear Alvaro, Michael,

Congratulations for the well written paper and the important "EMTF" result. It's always a pleasure to read papers written by former EB chairs.

Physics:
 - You say it's a Poisson distribution. Is it? Can you show it?
 - We are surprised there is no additional material. Some distributions would help showing this at conferences.

General:
 - In L.49 and 123 you use the concept of "run" without defining it. Different experiments have different definitions of what that is. Maybe worth adding that a run is a data set taken with stable conditions, and amounts to at most one hour.

Line-by-line:
Abstract: We think it would be more natural to move the sentence about the statistical uncertainty after that explaining what the uncertainties are.
L.1: This sentence is long. Consider splitting it.
L.11: Add a paragraph break here.
L.14: "in the lab" is jargon. Do you mean "in laboratory conditions", "in the laboratory frame" or both?
L.18: remove "also". We suggest to add here that LHCb is unique in covering 2<eta<5 (true?).
L.20: If you follow the suggestion above, there's no need to repeat the eta range.
L.36: "trigger line" is jargon. What about "based on unbiased triggers"?
L.37: "but accept those..." is a bit out of place. We think the sentence is clearer without it.
L.43: B -> magnetic
L.44: remove "about"
L.71: dimensional
L.74: allows to is not good English
L.78: remove "then"
L.88: This sentence is long. Consider splitting it.
L.102: single -> only (?). detector-related
L.129: we usually write Ref., but that may not be a rule (also 225)
L.140-1: remove "systematic" twice. We know you discuss systematics here.
L.144: extracting -> determining
L.148-151: These two sentences are in the wrong order. First state there is a problem and then explain you assign a systematic uncertainty to cover it.
L.155: Remove "Careful", all we do is careful.
L.166: generator-level. Remove Monte-Carlo
Table 1: We suggest to align source on the left. Add a row with the total.
L.170: "efficiencies to be seen" sounds strange. Detection efficiencies?
Table 2: add a space before (A) and (B)
L.203: remove "one"
Fig.2: not in LHCb style. all mathematical terms should be in italics.
L.225: error -> uncertainty
L.228: space before 3
Fig.2: not in LHCb style. all mathematical terms should be in italics.
Fig.2: All mathematical terms should be in italics. The colour coding is a bit unnatural. Following the logo colours would help speakers in talks (who are likely to add logos on their slides). ATLAS is blue, CMS is light blue/orange, alice Red/Black, totem light red.
Refs: most arxiv refs are missing.

Cheers,

Patrick


On 01/31/2018 10:33 AM, Patrick Koppenburg wrote:
Dear all,

A new paper is assigned to us.  https://cds.cern.ch/record/2302458

Please read it and send comments. I am looking for a volunteer to collect these comments, please let me know.

I also remind you of the bfys meeting Friday, with Niels as speaker.

Cheers,

Patrick


--
========================================================================
 Patrick Koppenburg                                   Nikhef, Amsterdam
 https://www.nikhef.nl/~pkoppenb/#contact


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