The draft document may be found at this URL: http://cdsweb.cern.ch/record/1390459
It is version no. 4 entitled: 'Study of W-boson production with jets in pp collisions at sqrt(s)s = 7 TeV with the ATLAS detector'

Additional ATLAS internal supportive material can be found at:

http://cdsweb.cern.ch/record/1361687

Please read and comment. All comments must be received by lunchtime, Friday 21st October, and will be briefly discussed in the glasgow ATLAS meeting.

thanks

Sarah

General Comments on the paper layout and Style

Comments on the analysis/methodology

• It won't significantly change the result, but why use powheg+pythia for ttbar together with MC@NLO for single top? It would make more sense to either use MC@NLO for both processes (since there is interference between the two) or else to use AcerMC for single-top, as it is consdiered to describe the %$ P_T$% spectrum for additional b-jets better than MC@NLO.

Specific comments on the text

Abstract

line 5: "up to 5 jets" seems to imply that the measurement is in bins of n excusive jets, however in fact the measurement if in bins of n inclusive jets. Obviously "up to 5 or more jets" doesn't work, but there must be a better way to write this.

Data and Online Event Selection

line 101: "On the average" -> "On average"

line 110 and 116: here you separately use "on-line" and "offline" , in section titles you use "online" and "off-line"; be consistent!

Off-line Event Analysis

Jet Selection

line 271: use \mbox to prevent wrap around of the inequality for JVF

Missing Tranverse Energy and %$ M_T $%

line 300: if the reader looks at reference [39] they will find extensive discussion of calcualtion and performance for "missing transverse momentum", not "missing transverse energy"

line 301: use \mbox to prevent wrap-around of the %$ M_T $% formula

References

reference [18] is not the appropriate one for single top production with MC@NLO - you should use, in addition:

S. Frixione, E. Laenen, P. Motylinski, Single-top production in MC@NLO. J. High Energy Phys. 03, 092 (2006)

and

S. Frixione, E. Laenen, P. Motylinski, B.R. Webber, C.D. White, Single-top hadroproduction in association with a W boson. J. High Energy Phys. 07, 029 (2008)

-- SarahAllwood - 2011-10-19