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--- 2013:groups:tools:matching [2013/06/07 16:21]
andy.buckley created
+++ 2013:groups:tools:matching [2013/06/17 15:12] (current)
klaus.rabbertz [Generators of interest]
@@ Line 18: / Line 18: @@
 ==== Remaining freedom in  $\mu_F$  and  $\mu_R$  ====
-Argument that $\mu_R = k p_T^2 $(in argument of$ \alpha_s $for both ME and PS) should naturally have$ k \sim 0.4 $from NLL$ A_2 $term ~equivalence to scale modification (cf. Frank Krauss). This or$ k = 1$ both viable. Explore both.
+Argument that  $\mu_R = k p_T$  (in argument of  $\alpha_s$  for both ME and PS) should naturally have  $k \sim 0.4$  from NLL  $A_2$  term ~equivalence to scale modification (cf. Frank Krauss). This or  $k = 1$  both viable. Explore both.
 Effect of  $\times 2$  variations on  $\mu_R$ : include both schemes, so use  $k = \{ 0.2, 0.4, 1.0, 2.0 \}$  settings for comparison.
@@ Line 31: / Line 31: @@
 ===== Comparison study =====
-Evaluate effect of different matching procedures for dijet events at NLO. Using Rivet ATLAS & CMS analyses of R32, inclusive/dijet spectra and jet rates (and ratios), jet shapes and pile-up/UE-robust jet mass etc. **Restrict to dijet process at NLO for now.**
+Evaluate effect of different matching procedures for dijet events at NLO. Using Rivet ATLAS & CMS analyses of inclusive/dijet spectra, R32 and jet rates (and ratios), jet shapes and pile-up/UE-robust jet mass etc. **Restrict to dijet process at NLO for now.**
 Include scale variations //and// scheme uncertainties separately.
@@ Line 43: / Line 43: @@
   * POWHEG-BOX + PYTHIA6? (1 scheme x 2  $\alpha_s(M_Z)$ )
   * Sherpa MC@NLO
+  * BlackHat + Sherpa ?
+  * Njet + Sherpa ?
   * (a)MC@NLO+Herwig++?
   * Herwig++ MatchBox?
   * Pythia8 UNLOPS?
+  * HEJ
   * //More?//
+Planning session blackboard:
+{{planning_session.jpg}}
+ --- //[[klaus.rabbertz@cern.ch|Klaus Rabbertz]] 2013/06/17 15:12//
+We have provided a step by step guide for generation of
+fixed order events with NJet+Sherpa via the NJet website
+[[https://bitbucket.org/njet/njet/wiki/NJetSherpa2_0_beta|Event Generation with NJet+Sherpa]]
+Get in touch with Valery(yundin@nbi.dk) or myself if it needs any clarification/doesn't work etc.
+ --- //[[badger@nbi.dk|Simon Badger]] 2013/06/11 17:50//
+==== Other ====
+{{:2013:groups:tools:powheg-matching-schemes.pdf|Slides on POWHEG+Pythia8}}
+{{:2013:nlo_matched_20130607.pdf|More slides on POWHEG+Pythia and Herwig etc}}
+  * systematic variation of underlying event simulation: eigentunes? other ideas?
+  * PDF uncertainties: how to do them properly in the shower?  is this important?

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