Until further notice, the contents of this page are under construction, and subject to change. It is a working document.

Introduction

In examining the latest NLO and NNLO cross section predictions for various processes, it is important not to forget to compare all of these with the standard MC production used by members of ATLAS on a daily basis. For these, leading-order generators such as Pythia, Herwig and Alpgen are used, as well as MC@NLO. It turns out that leading-order does not, in this sense, mean the same thing as LO in programs such as FEWZ or MCFM, some higher-order and nonperturbative effects are already accounted for. This page shows results for Standard Model Z->ee events generated using Pythia, and comparisons with other physics tools detailed in WZProductionMonteCarlos.

Most comments (eg about the Pythia flags) should apply to other processes, with appropriate reinterpretation, but I will talk specifically about Z->ee only.

Pythia flags

The most commonly used sample for ATLAS studies of Z->ee is sample number 5144. The job options for this sample (which set process-specific Pythia switches) are here, but these hide most of the subtleties. The ATLAS MC tuning is in this file, especially lines 220-248. All of this can, in principle, be overidden.

The most important non-LO effects are (in some order - many of these are under ongoing investigation):
  • Inclusion of Photos: This allows electrons (in the final state) to radiate photons.
  • "Primordial kT": The incoming partons have a kT taken from a Gaussian distribution with a width of 2 GeV. This is a parameterised non-perturbative correction.
  • ISR: ie QCD radiation of the partons "before" collision. This can also give the Z boson non-zero p_T.
  • Parton Shower: This again allows non-perturbative QCD corrections to be made.
  • Multiple Interactions: Not investigated yet.
  • FSR: QCD radiation in the final state - this should not have too much effect in this channel.
  • Hadronisation: Ditto.

Plots as a function of electron cuts

Various quantities are plotted here as a function of cuts on the electrons. All events generated have M_Z > 60 GeV.

  • Black/Solid circle: No selection.
  • Blue/Solid square: Standard ATLAS filter for sample 5144: at least one electron with pTe > 10 GeV and |eta| < 2.7.
  • Red/Solid triangles: Both electrons have |eta| < 2.5.
  • Purple/Open circle: Both electrons have pTe > 20 GeV.
  • Green/Open squares: Both electrons have pTe > 20 GeV and |eta| < 2.5.

In the summary lines, the colours and marker styles belong instead to the particular settings of Pythia used for that run, with each line having the same selection from the list above.

Generator settings Mass of Z pT of Z rapidity of Z Mass of ee pair pT of ee pair rapidity of ee pair pT of single electron eta of single electron
ATLAS default Link (Log) Link (Log) Link (Log) Link (Log) Link (Log) Link (Log) Link (Log) Link (Log)
Leading Order Link Link Link Link Link Link Link Link
LO + Photos Link Link Link Link Link Link Link Link
LO + Parton Shower Link Link Link Link Link Link Link Link
LO + primodial kT Link Link Link Link Link Link Link Link
LO + ISR Link Link Link Link Link Link Link Link
ATLAS - Photos Link Link Link Link Link Link Link Link
ATLAS - PS Link Link Link Link Link Link Link Link
ATLAS - primodial kT Link Link Link Link Link Link Link Link
ATLAS - ISR Link Link Link Link Link Link Link Link
Summary (no cuts) Link (Log) Link (Log) Link (Log) Link (Log) Link (Log) Link (Log) Link (Log) Link (Log)

Acceptances (Filter efficiencies)

The table below shows the acceptances of various cuts for each physics case considered. The acceptance (which can also be regarded as an efficiency for a filter based on those cuts) is simply #events(with cuts)/#events(no cuts). The expected uncertainty in each case should be < O(0.05%).

The last three columns show the efficiency of the various selections with respect to the ATLAS filter. These are the acceptances that should be seen in the bulk MC production.

Generator settings ATLAS filter Eta cut pT cut Eta&pT cuts Eta cut wrt ATLAS pT cut wrt ATLAS Eta&pT cuts wrt ATLAS
               
Leading Order 82.12% 44.43% 85.20% 42.11% 54.00% 86.66% 51.28%
LO + Photos 81.57% 44.55% 80.31% 40.10% 54.51% 82.04% 49.16%
LO + Parton Shower 82.13% 44.52% 85.20% 42.18% 54.11% 86.64% 51.36%
LO + primodial kT 82.24% 44.52% 84.06% 41.82% 54.08% 85.15% 50.86%
LO + ISR 84.59% 47.26% 78.60% 41.72% 55.85% 78.46% 49.32%
               
ATLAS default 84.02% 47.27% 74.40% 39.64% 56.21% 74.56% 47.17%
ATLAS - Photos 84.56% 47.34% 78.62% 41.73% 55.96% 78.41% 49.35%
ATLAS - PS 84.08% 47.28% 74.42% 39.71% 56.20% 74.59% 47.24%
ATLAS - primordial kT 84.02% 47.29% 74.44% 39.69% 56.25% 74.64% 47.24%
ATLAS - ISR 81.66% 44.60% 79.37% 39.81% 54.52% 80.84% 48.75%

This is the same information, in a slightly easier-to-digest form. For each variable, the row labeled "wrt LO" shows (LO+X)/(LO) - 1, while the "wrt ATLAS" row shows (ATLAS)/(ATLAS-X) - 1. If an effect completely factorises, these ratios should be equal, and I have chosen the sign so that if an effect increases the acceptance, the figure is positive.

Effect Comparison ATLAS filter Eta cut pT cut Eta&pT cuts Eta cut wrt ATLAS pT cut wrt ATLAS Eta&pT cuts wrt ATLAS
                 
Photos wrt LO -0.67% 0.27% -5.74% -4.77% 0.94% -5.33% -4.13%
  wrt ATLAS -0.64% -0.15% -5.37% -5.01% 0.45% -4.91% -4.42%
Parton Shower wrt LO 0.01% 0.20% 0.00% 0.17% 0.20% -0.02% 0.16%
  wrt ATLAS -0.07% -0.02% -0.03% -0.18% 0.02% -0.04% -0.15%
kT wrt LO 0.15% 0.20% -1.34% -0.69% 0.15% -1.74% -0.82%
  wrt ATLAS 0.00% -0.04% -0.05% -0.13% -0.07% -0.11% -0.15%
ISR wrt LO 3.01% 6.37% -7.75% -0.93% 3.43% -9.46% -3.82%
  wrt ATLAS 2.89% 5.99% -6.26% -0.43% 3.10% -7.77% -3.24%

Nomenclature note

In the above, "ATLAS" refers to the standard Pythia settings used in the bulk Monte Carlo production (eg data sample 5144 itself, but also for other processes). Something like "ATLAS - Photos" means exactly what it says - Photos is switched off, all other settings are as per the default.

"Leading Order" or "LO" is designed to be as close to what the other calculational tools (MCFM, FEWZ, Horace, etc) call Leading Order. All the effects detailed above are off, the job options snippet that does this is here. With some cuts (the ATLAS filter, detailed below), this compares well with Horace, as shown here. Something like "LO+Parton Shower" again means exactly what it says.

Because of FSR, plots have been split into those for the boson itself ("*** of Z") and those referring to the final state electrons ("*** of ee pair"). For LO plots without FSR, these plots will be the same.

General Comments

  • M_Z: The mass distribution of the boson is nearly a Breit-Wigner shape, slightly modified by interference with the photon and the pdfs ("parton luminosity"). None of the flags above change either of these effects, leaving the M_Z distribution unchanged throughout.
  • M_ee: In ATLAS, this is different from M_Z through the action of FSR, ie photon radiation from the final state electrons. The other flags only seem to have very minor effects.
  • pT_Z and pT_ee: At LO, these are both strictly zero. In the default ATLAS settings, the Z boson can have a significant pT, mostly arising from ISR. The primordial kT of the partons also adds a contribution, limited to 10 GeV by construction. Finally, addition of FSR through Photos affects pT_ee, making it different from pt_Z.
    • It is interesting to compare pT_Z for ATLAS-ISR and LO+kT: they are very nearly identical.
  • y_Z and y_ee: These are always very similar to each other, as FSR typically changes the energy but not the direction of final state electrons. In the ATLAS settings, the Z appears to be a little more central than at LO, chiefly due to ISR.
  • pT_e: Here, the difference between LO and the ATLAS settings is startling. While at LO, kinematics imply that there are very few electrons with pT > 45 GeV, they are common with the ATLAS settings. This difference is largely, but not entirely, down to ISR. (the plot of ATLAS-ISR is interesting for its shape here). The effects of primordial kT and FSR also contribute to the shape of this plot.
  • eta_e: This is kinematically related to y_ee, and similar comments apply - the difference between LO and ATLAS settings can by and large be attributed to ISR.

Comments on Photos

Photos is a separate Monte Carlo program that is used to simulate the effect of QED in the final state. The Z->ee channel, with electrons in the final state, can be significantly altered through this effect. As the energy of one particle is split amongst many, this effect will reduce the average electron pT. To test this effect, a K-factor can be defined, using some set of Pythia parameters, S, as a benchmark: K = (S-Photos)/(S+Photos). Taking the electron pT as an example, K(pT_e) will typically be less than 1 at low pT and greater than 1 at high pT due to the migration of electrons from high pT bins to lower pT bins.

To test the independence (or otherwise) of Photos from the other effects studied, the table below shows plots comparing K when S = LO Pythia and S = default ATLAS settings. pT_ee has been omitted because it is zero in Leading Order making this comparison meaningless. The only significant difference arises with pT_e, where the inclusion of ISR in the ATLAS defaults has already changed the distribution beyond recognition. At low pT, where these distributions are similar, the K factors agree within statistical precision.

  Mass of ee pair rapidity of ee pair pT of single electron eta of single electron
No cuts Link Link Link Link

The frankly spiky nature of the LO electron pT distribution also clearly affects the equivalent plots for primordial kT and ISR. The other

(S-kT)/(S+kT) (S-ISR)/(S+ISR)

The other distributions "agree", in the sense that (ATLAS - X)/(ATLAS) is the same as (LO)/(LO + X) within statistical precision.

-- MikeFlowerdew - 24 Apr 2008
Topic attachments
I Attachment Action Size Date Who Comment
Horace_vs_Pythia_LO.epseps Horace_vs_Pythia_LO.eps manage 23 K 25 Apr 2008 - 12:54 MikeFlowerdew Comparison of Pythia LO with Horace LO
ISR_epT_fromLOandATLAS.epseps ISR_epT_fromLOandATLAS.eps manage 46 K 21 May 2008 - 12:27 MikeFlowerdew  
Zmass_boson_015144.epseps Zmass_boson_015144.eps manage 73 K 28 Apr 2008 - 14:25 MikeFlowerdew  
Zmass_boson_015144_log.epseps Zmass_boson_015144_log.eps manage 84 K 01 May 2008 - 08:48 MikeFlowerdew  
Zmass_boson_1015144.epseps Zmass_boson_1015144.eps manage 72 K 28 Apr 2008 - 14:25 MikeFlowerdew  
Zmass_boson_1115144.epseps Zmass_boson_1115144.eps manage 72 K 30 Apr 2008 - 11:07 MikeFlowerdew  
Zmass_boson_1215144.epseps Zmass_boson_1215144.eps manage 67 K 21 May 2008 - 11:34 MikeFlowerdew  
Zmass_boson_1315144.epseps Zmass_boson_1315144.eps manage 67 K 21 May 2008 - 11:35 MikeFlowerdew  
Zmass_boson_215144.epseps Zmass_boson_215144.eps manage 73 K 30 Apr 2008 - 11:08 MikeFlowerdew  
Zmass_boson_315144.epseps Zmass_boson_315144.eps manage 72 K 30 Apr 2008 - 11:08 MikeFlowerdew  
Zmass_boson_715144.epseps Zmass_boson_715144.eps manage 72 K 28 Apr 2008 - 14:26 MikeFlowerdew  
Zmass_boson_815144.epseps Zmass_boson_815144.eps manage 72 K 28 Apr 2008 - 14:26 MikeFlowerdew  
Zmass_boson_915144.epseps Zmass_boson_915144.eps manage 72 K 28 Apr 2008 - 14:26 MikeFlowerdew  
Zmass_boson_allevents.epseps Zmass_boson_allevents.eps manage 130 K 21 May 2008 - 11:01 MikeFlowerdew  
Zmass_boson_allevents_log.epseps Zmass_boson_allevents_log.eps manage 151 K 21 May 2008 - 11:08 MikeFlowerdew  
Zmass_ee_015144.epseps Zmass_ee_015144.eps manage 74 K 28 Apr 2008 - 14:26 MikeFlowerdew  
Zmass_ee_015144_log.epseps Zmass_ee_015144_log.eps manage 82 K 01 May 2008 - 08:49 MikeFlowerdew  
Zmass_ee_1015144.epseps Zmass_ee_1015144.eps manage 72 K 28 Apr 2008 - 14:26 MikeFlowerdew  
Zmass_ee_1115144.epseps Zmass_ee_1115144.eps manage 72 K 30 Apr 2008 - 11:13 MikeFlowerdew  
Zmass_ee_1215144.epseps Zmass_ee_1215144.eps manage 68 K 21 May 2008 - 11:35 MikeFlowerdew  
Zmass_ee_1315144.epseps Zmass_ee_1315144.eps manage 68 K 21 May 2008 - 11:35 MikeFlowerdew  
Zmass_ee_215144.epseps Zmass_ee_215144.eps manage 73 K 30 Apr 2008 - 11:13 MikeFlowerdew  
Zmass_ee_315144.epseps Zmass_ee_315144.eps manage 73 K 30 Apr 2008 - 11:15 MikeFlowerdew  
Zmass_ee_715144.epseps Zmass_ee_715144.eps manage 72 K 28 Apr 2008 - 14:26 MikeFlowerdew  
Zmass_ee_815144.epseps Zmass_ee_815144.eps manage 73 K 28 Apr 2008 - 14:27 MikeFlowerdew  
Zmass_ee_915144.epseps Zmass_ee_915144.eps manage 72 K 28 Apr 2008 - 14:27 MikeFlowerdew  
Zmass_ee_allevents.epseps Zmass_ee_allevents.eps manage 106 K 07 May 2008 - 15:01 MikeFlowerdew  
Zmass_ee_allevents_log.epseps Zmass_ee_allevents_log.eps manage 146 K 21 May 2008 - 11:08 MikeFlowerdew  
Zmass_fromLOandATLAS.epseps Zmass_fromLOandATLAS.eps manage 47 K 07 May 2008 - 10:29 MikeFlowerdew  
Zpt_boson_015144.epseps Zpt_boson_015144.eps manage 74 K 28 Apr 2008 - 13:38 MikeFlowerdew  
Zpt_boson_015144_log.epseps Zpt_boson_015144_log.eps manage 83 K 01 May 2008 - 08:49 MikeFlowerdew  
Zpt_boson_1015144.epseps Zpt_boson_1015144.eps manage 21 K 28 Apr 2008 - 13:38 MikeFlowerdew  
Zpt_boson_1115144.epseps Zpt_boson_1115144.eps manage 72 K 30 Apr 2008 - 11:15 MikeFlowerdew  
Zpt_boson_1215144.epseps Zpt_boson_1215144.eps manage 68 K 21 May 2008 - 11:36 MikeFlowerdew  
Zpt_boson_1315144.epseps Zpt_boson_1315144.eps manage 16 K 21 May 2008 - 11:36 MikeFlowerdew  
Zpt_boson_215144.epseps Zpt_boson_215144.eps manage 74 K 30 Apr 2008 - 11:15 MikeFlowerdew  
Zpt_boson_315144.epseps Zpt_boson_315144.eps manage 73 K 30 Apr 2008 - 11:15 MikeFlowerdew  
Zpt_boson_715144.epseps Zpt_boson_715144.eps manage 15 K 28 Apr 2008 - 13:39 MikeFlowerdew  
Zpt_boson_815144.epseps Zpt_boson_815144.eps manage 15 K 28 Apr 2008 - 13:39 MikeFlowerdew  
Zpt_boson_915144.epseps Zpt_boson_915144.eps manage 15 K 28 Apr 2008 - 13:40 MikeFlowerdew  
Zpt_boson_allevents.epseps Zpt_boson_allevents.eps manage 74 K 21 May 2008 - 11:02 MikeFlowerdew  
Zpt_boson_allevents_log.epseps Zpt_boson_allevents_log.eps manage 79 K 21 May 2008 - 11:03 MikeFlowerdew  
Zpt_ee_015144.epseps Zpt_ee_015144.eps manage 74 K 28 Apr 2008 - 13:40 MikeFlowerdew  
Zpt_ee_015144_log.epseps Zpt_ee_015144_log.eps manage 84 K 01 May 2008 - 08:49 MikeFlowerdew  
Zpt_ee_1015144.epseps Zpt_ee_1015144.eps manage 21 K 28 Apr 2008 - 13:40 MikeFlowerdew  
Zpt_ee_1115144.epseps Zpt_ee_1115144.eps manage 72 K 30 Apr 2008 - 11:15 MikeFlowerdew  
Zpt_ee_1215144.epseps Zpt_ee_1215144.eps manage 69 K 21 May 2008 - 11:37 MikeFlowerdew  
Zpt_ee_1315144.epseps Zpt_ee_1315144.eps manage 52 K 21 May 2008 - 11:37 MikeFlowerdew  
Zpt_ee_215144.epseps Zpt_ee_215144.eps manage 74 K 30 Apr 2008 - 11:16 MikeFlowerdew  
Zpt_ee_315144.epseps Zpt_ee_315144.eps manage 73 K 30 Apr 2008 - 11:16 MikeFlowerdew  
Zpt_ee_715144.epseps Zpt_ee_715144.eps manage 15 K 28 Apr 2008 - 13:40 MikeFlowerdew  
Zpt_ee_815144.epseps Zpt_ee_815144.eps manage 58 K 28 Apr 2008 - 13:41 MikeFlowerdew  
Zpt_ee_915144.epseps Zpt_ee_915144.eps manage 15 K 28 Apr 2008 - 13:43 MikeFlowerdew  
Zpt_ee_allevents.epseps Zpt_ee_allevents.eps manage 91 K 21 May 2008 - 11:02 MikeFlowerdew  
Zpt_ee_allevents_log.epseps Zpt_ee_allevents_log.eps manage 89 K 21 May 2008 - 11:04 MikeFlowerdew  
Zrapidity_boson_015144.epseps Zrapidity_boson_015144.eps manage 60 K 28 Apr 2008 - 13:43 MikeFlowerdew  
Zrapidity_boson_015144_log.epseps Zrapidity_boson_015144_log.eps manage 51 K 01 May 2008 - 08:50 MikeFlowerdew  
Zrapidity_boson_1015144.epseps Zrapidity_boson_1015144.eps manage 58 K 28 Apr 2008 - 13:43 MikeFlowerdew  
Zrapidity_boson_1115144.epseps Zrapidity_boson_1115144.eps manage 57 K 30 Apr 2008 - 11:16 MikeFlowerdew  
Zrapidity_boson_1215144.epseps Zrapidity_boson_1215144.eps manage 54 K 21 May 2008 - 11:37 MikeFlowerdew  
Zrapidity_boson_1315144.epseps Zrapidity_boson_1315144.eps manage 55 K 21 May 2008 - 11:37 MikeFlowerdew  
Zrapidity_boson_215144.epseps Zrapidity_boson_215144.eps manage 58 K 30 Apr 2008 - 11:16 MikeFlowerdew  
Zrapidity_boson_315144.epseps Zrapidity_boson_315144.eps manage 59 K 30 Apr 2008 - 11:16 MikeFlowerdew  
Zrapidity_boson_715144.epseps Zrapidity_boson_715144.eps manage 59 K 28 Apr 2008 - 13:43 MikeFlowerdew  
Zrapidity_boson_815144.epseps Zrapidity_boson_815144.eps manage 60 K 28 Apr 2008 - 13:44 MikeFlowerdew  
Zrapidity_boson_915144.epseps Zrapidity_boson_915144.eps manage 58 K 28 Apr 2008 - 13:44 MikeFlowerdew  
Zrapidity_boson_allevents.epseps Zrapidity_boson_allevents.eps manage 125 K 21 May 2008 - 11:05 MikeFlowerdew  
Zrapidity_boson_allevents_log.epseps Zrapidity_boson_allevents_log.eps manage 106 K 21 May 2008 - 11:06 MikeFlowerdew  
Zrapidity_ee_015144.epseps Zrapidity_ee_015144.eps manage 58 K 28 Apr 2008 - 13:44 MikeFlowerdew  
Zrapidity_ee_015144_log.epseps Zrapidity_ee_015144_log.eps manage 50 K 01 May 2008 - 08:50 MikeFlowerdew  
Zrapidity_ee_1015144.epseps Zrapidity_ee_1015144.eps manage 58 K 28 Apr 2008 - 13:44 MikeFlowerdew  
Zrapidity_ee_1115144.epseps Zrapidity_ee_1115144.eps manage 57 K 30 Apr 2008 - 11:17 MikeFlowerdew  
Zrapidity_ee_1215144.epseps Zrapidity_ee_1215144.eps manage 52 K 21 May 2008 - 11:38 MikeFlowerdew  
Zrapidity_ee_1315144.epseps Zrapidity_ee_1315144.eps manage 53 K 21 May 2008 - 11:38 MikeFlowerdew  
Zrapidity_ee_215144.epseps Zrapidity_ee_215144.eps manage 58 K 30 Apr 2008 - 11:17 MikeFlowerdew  
Zrapidity_ee_315144.epseps Zrapidity_ee_315144.eps manage 57 K 30 Apr 2008 - 11:17 MikeFlowerdew  
Zrapidity_ee_715144.epseps Zrapidity_ee_715144.eps manage 59 K 28 Apr 2008 - 13:44 MikeFlowerdew  
Zrapidity_ee_815144.epseps Zrapidity_ee_815144.eps manage 58 K 28 Apr 2008 - 13:45 MikeFlowerdew  
Zrapidity_ee_915144.epseps Zrapidity_ee_915144.eps manage 58 K 28 Apr 2008 - 13:45 MikeFlowerdew  
Zrapidity_ee_allevents.epseps Zrapidity_ee_allevents.eps manage 124 K 21 May 2008 - 11:05 MikeFlowerdew  
Zrapidity_ee_allevents_log.epseps Zrapidity_ee_allevents_log.eps manage 106 K 21 May 2008 - 11:07 MikeFlowerdew  
Zrapidity_fromLOandATLAS.epseps Zrapidity_fromLOandATLAS.eps manage 35 K 07 May 2008 - 10:29 MikeFlowerdew  
epT_fromLOandATLAS.epseps epT_fromLOandATLAS.eps manage 59 K 21 May 2008 - 12:24 MikeFlowerdew  
ept_sum_015144.epseps ept_sum_015144.eps manage 94 K 28 Apr 2008 - 13:52 MikeFlowerdew  
ept_sum_015144_log.epseps ept_sum_015144_log.eps manage 89 K 01 May 2008 - 08:50 MikeFlowerdew  
ept_sum_1015144.epseps ept_sum_1015144.eps manage 84 K 28 Apr 2008 - 13:51 MikeFlowerdew  
ept_sum_1115144.epseps ept_sum_1115144.eps manage 90 K 30 Apr 2008 - 11:18 MikeFlowerdew  
ept_sum_1215144.epseps ept_sum_1215144.eps manage 87 K 21 May 2008 - 11:39 MikeFlowerdew  
ept_sum_1315144.epseps ept_sum_1315144.eps manage 81 K 21 May 2008 - 11:39 MikeFlowerdew  
ept_sum_215144.epseps ept_sum_215144.eps manage 92 K 30 Apr 2008 - 11:18 MikeFlowerdew  
ept_sum_315144.epseps ept_sum_315144.eps manage 92 K 30 Apr 2008 - 11:18 MikeFlowerdew  
ept_sum_715144.epseps ept_sum_715144.eps manage 82 K 28 Apr 2008 - 13:51 MikeFlowerdew  
ept_sum_815144.epseps ept_sum_815144.eps manage 86 K 28 Apr 2008 - 13:51 MikeFlowerdew  
ept_sum_915144.epseps ept_sum_915144.eps manage 82 K 28 Apr 2008 - 13:51 MikeFlowerdew  
ept_sum_allevents.epseps ept_sum_allevents.eps manage 175 K 21 May 2008 - 11:11 MikeFlowerdew  
ept_sum_allevents_log.epseps ept_sum_allevents_log.eps manage 171 K 21 May 2008 - 11:11 MikeFlowerdew  
erapidity_fromLOandATLAS.epseps erapidity_fromLOandATLAS.eps manage 40 K 07 May 2008 - 10:29 MikeFlowerdew  
erapidity_sum_015144.epseps erapidity_sum_015144.eps manage 74 K 28 Apr 2008 - 13:54 MikeFlowerdew  
erapidity_sum_015144_log.epseps erapidity_sum_015144_log.eps manage 53 K 01 May 2008 - 08:51 MikeFlowerdew  
erapidity_sum_1015144.epseps erapidity_sum_1015144.eps manage 72 K 28 Apr 2008 - 13:53 MikeFlowerdew  
erapidity_sum_1115144.epseps erapidity_sum_1115144.eps manage 73 K 30 Apr 2008 - 11:19 MikeFlowerdew  
erapidity_sum_1215144.epseps erapidity_sum_1215144.eps manage 69 K 21 May 2008 - 11:39 MikeFlowerdew  
erapidity_sum_1315144.epseps erapidity_sum_1315144.eps manage 67 K 21 May 2008 - 11:39 MikeFlowerdew  
erapidity_sum_215144.epseps erapidity_sum_215144.eps manage 75 K 30 Apr 2008 - 11:19 MikeFlowerdew  
erapidity_sum_315144.epseps erapidity_sum_315144.eps manage 72 K 30 Apr 2008 - 11:18 MikeFlowerdew  
erapidity_sum_715144.epseps erapidity_sum_715144.eps manage 73 K 28 Apr 2008 - 13:52 MikeFlowerdew  
erapidity_sum_815144.epseps erapidity_sum_815144.eps manage 71 K 28 Apr 2008 - 13:52 MikeFlowerdew  
erapidity_sum_915144.epseps erapidity_sum_915144.eps manage 72 K 28 Apr 2008 - 13:52 MikeFlowerdew  
erapidity_sum_allevents.epseps erapidity_sum_allevents.eps manage 161 K 21 May 2008 - 11:12 MikeFlowerdew  
erapidity_sum_allevents_log.epseps erapidity_sum_allevents_log.eps manage 112 K 21 May 2008 - 11:12 MikeFlowerdew  
kT_epT_fromLOandATLAS.epseps kT_epT_fromLOandATLAS.eps manage 60 K 21 May 2008 - 12:27 MikeFlowerdew  
Topic revision: r15 - 27 Jun 2008, MikeFlowerdew
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