Detail for Pythia 8 (Professor) 8.244 vs. 8.243

Note: this view is still in a development stage. Exercise care and common sense when interpreting results.

Use this view to look for changes between generator versions (technical validation). For each version, it can also be used as a condensed summary of the overall quality of the description of the various categories of data (physics validation).

Numbers in the tables correspond to chi2 values. To make them more physically meaningful, the MC predictions are assigned a flat 5% 'theory uncertainty', as a baseline sanity limit for the achievable theoretical accuracy with present-day MC models. A few clear cases of GIGO are excluded, but some problematic cases remain. Thus, e.g., if a calculation returns a too small cross section for a dimensionful quantity, the corresponding chi2 value will be large, even though the shape of the distribution may be well described. It could be argued how this should be treated, how much uncertainty should be allowed for each observable, whether it is reasonable to include observables that a given model is not supposed to describe, etc. These are questions that we do not believe can be meaningfully (or reliably) addressed by a fully automated site containing tens of thousands of model/observable combinations. In the end, the interpretation of the information we display is up to you, the user.

← Select which generator / tune you want to see the validation view for, or go back to the normal mcplots view.

ee → γ*/Z (hadronic)

Observable Cut Energy χ2 (8.244) Δ χ2 (8.243)
Aplanarity ALEPH 1996 charged 91 -
ALEPH 2004 206 -
ALEPH 2004 133 -
ALEPH 2004 91 -
DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
fweak delphi2011 91 -
opal2003b 91 -
SLD 2002 91 -
Mean of fweak delphi2011 91 -
opal2003b 91 -
B(Total) ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of Btot OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
B(Max) ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of Bmax OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
B(Min) DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of Bmin OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
ΔB(Max-Min) DELPHI 1996 91 -
C parameter ALEPH 1996 charged 91 -
ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of C OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
D parameter DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
(RqK--RqK+) / (RqK-+RqK+) SLD 2004 91 -
(Rqπ--Rqπ+) / (Rqπ-+Rqπ+) SLD 2004 91 -
(Rqp-Rq) / (Rqp+Rq) SLD 2004 91 -
EEC DELPHI 1996 91 -
EEC Asymmetry DELPHI 1996 91 -
M(Heavy Hemisph) ALEPH 1996 charged 91 -
ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of MH OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
M(Light Hemisph) DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of ML OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
ΔM(Heavy-Light) ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
DELPHI 1996 91 -
B multiplicity DELPHI 1996 91 -
Multiplicity Distribution ALEPH 1996 91 -
DELPHI 1991 91 -
DELPHI 1996 91 -
HRS 1986 29 -
OPAL 91 -
TASSO 1989 44 -
TASSO 1989 35 -
TASSO 1989 22 -
TASSO 1989 14 -
<Nch> DELPHI 1991 91 -
HRS 1986 29 -
OPAL 91 -
SLD 2004 (b-events) 91 -
SLD 2004 (c-events) 91 -
SLD 2004 (u,d,s-events) 91 -
<Nch,uds> - <Nch,b> SLD 2004 91 -
<Nch,uds> - <Nch,c> SLD 2004 91 -
D multiplicity DELPHI 1996 D+- 91 -
DELPHI 1996 D0 91 -
Δ++ multiplicity DELPHI 1996 91 -
D* multiplicity DELPHI 1996 D*+- 91 -
η multiplicity DELPHI 1996 91 -
η' multiplicity DELPHI 1996 91 -
K multiplicity DELPHI 1996 K+- 91 -
DELPHI 1996 K0 91 -
SLD 2004 (b-events) K+- 91 -
SLD 2004 (c-events) K+- 91 -
SLD 2004 K+- 91 -
SLD 2004 (u,d,s-events) K+- 91 -
K*(892) multiplicity DELPHI 1996 K*+- 91 -
DELPHI 1996 K*0 91 -
Λ0 multiplicity DELPHI 1996 91 -
Λb multiplicity DELPHI 1996 91 -
Ω multiplicity DELPHI 1996 91 -
p multiplicity DELPHI 1996 91 -
SLD 2004 91 -
SLD 2004 (b-events) 91 -
SLD 2004 (c-events) 91 -
SLD 2004 (u,d,s-events) 91 -
φ multiplicity DELPHI 1996 91 -
π multiplicity DELPHI 1996 π+- 91 -
DELPHI 1996 π0 91 -
SLD 2004 (b-events) π+- 91 -
SLD 2004 (c-events) π+- 91 -
SLD 2004 π+- 91 -
SLD 2004 (u,d,s-events) π+- 91 -
ρ multiplicity DELPHI 1996 91 -
Σ(1385) multiplicity DELPHI 1996 Σ*+ 91 -
Ξ multiplicity DELPHI 1996 Ξ+- 91 -
Ξ(1530) multiplicity delphi-XiSt0 91 -
Moments of O OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Planarity ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
DELPHI 1996 91 -
pTin (Sph) ALEPH 1996 charged 91 -
DELPHI 1996 91 -
pTin (Thrust) ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
DELPHI 1996 91 -
pTout (Sph) ALEPH 1996 charged 91 -
DELPHI 1996 91 -
pTout (Thrust) ALEPH 2004 206 -
DELPHI 1996 91 -
<pTout> vs x (Thrust) DELPHI 1996 91 -
<pT> vs x (Thrust) DELPHI 1996 91 -
One-jet fraction ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
Two-jet fraction ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
delphi-Durham 91 -
delphi-Jade 91 -
Three-jet fraction ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
delphi-Durham 91 -
delphi-Jade 91 -
Four-jet fraction ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
delphi-Durham 91 -
delphi-Jade 91 -
Five-jet fraction ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
>Six-jet fraction ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
N(q→K-)+N(q̄→K+) SLD 2004 91 -
N(q→K+)+N(q̄→K-) SLD 2004 91 -
N(q→π-)+N(q̄→π+) SLD 2004 91 -
N(q→π+)+N(q̄→π-) SLD 2004 91 -
N(q→p̄)+N(q̄→p) SLD 2004 91 -
N(q→p)+N(q̄→p̄) SLD 2004 91 -
Sphericity ALEPH 1996 charged 91 -
ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of S OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Thrust ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
1-Thrust ALEPH 1996 charged 91 -
DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of 1-T OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Thrust Major ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of T Major OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Thrust Minor ALEPH 1996 charged 91 -
ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of T Minor OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Thrust Oblateness ALEPH 1996 charged 91 -
ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
DELPHI 1996 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
xp (momentum fraction) ALEPH 1996 charged 91 -
ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
DELPHI 1996 91 -
OPAL All events 91 -
OPAL b events 91 -
OPAL c events 91 -
OPAL u,d,s events 91 -
SLD 2004 (b-events) 91 -
SLD 2004 (c-events) 91 -
SLD 2004 (charged) 91 -
SLD 2004 (u,d,s-events) 91 -
D* spectrum aleph1999-Dst+- 91 -
xE (energy fraction) ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
η spectrum ALEPH 1996 91 -
L3_1992 91 -
L3_1992log 91 -
η' spectrum ALEPH 1996 91 -
γ spectrum ALEPH 1996 91 -
K spectrum ALEPH 1996 K+- 91 -
ALEPH 1996 K0 91 -
SLD 2004 (b-events) K+- 91 -
SLD 2004 (c-events) K+- 91 -
SLD 2004 K+- 91 -
SLD 2004 (u,d,s-events) K+- 91 -
K*(892) spectrum ALEPH 1996 K*+- 91 -
ALEPH 1996 K*0 91 -
OPAL 1993 K*+- 91 -
Λ0 spectrum ALEPH 1996 91 -
Ln(xp) ALEPH 1996 charged 91 -
ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
DELPHI 1996 91 -
OPAL All events 91 -
OPAL b events 91 -
OPAL c events 91 -
OPAL u,d,s events 91 -
ω(782) spectrum ALEPH 1996 91 -
p spectrum ALEPH 1996 91 -
SLD 2004 91 -
SLD 2004 (b-events) 91 -
SLD 2004 (c-events) 91 -
SLD 2004 (u,d,s-events) 91 -
φ spectrum ALEPH 1996 91 -
π spectrum ALEPH 1996 π+- 91 -
ALEPH 1996 π0 91 -
SLD 2004 (b-events) π+- 91 -
SLD 2004 (c-events) π+- 91 -
SLD 2004 π+- 91 -
SLD 2004 (u,d,s-events) π+- 91 -
ρ spectrum ALEPH 1996 91 -
Σ(1385) spectrum ALEPH 1996 Σ+- 91 -
DELPHI 1996 Σ*+ 91 -
Ξ spectrum ALEPH 1996 Ξ+- 91 -
DELPHI 1996 Ξ+- 91 -
Ξ(1530) spectrum ALEPH 1996 Ξ*0 91 -
y12 ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
y23 ALEPH 1996 charged 91 -
ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
Moments of Y23 OPAL 2004 197 -
OPAL 2004 133 -
OPAL 2004 91 -
y34 ALEPH 2004 206 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
y45 ALEPH 2004 206 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
y56 ALEPH 2004 206 -
ALEPH 2004 189 -
ALEPH 2004 133 -
ALEPH 2004 91 -
Rapidity wrt Sphericity axis ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
DELPHI 1996 91 -
Rapidity wrt Thrust axis ALEPH 1996 charged 91 -
ALEPH 2004 206 -
ALEPH 2004 200 -
ALEPH 2004 189 -
ALEPH 2004 133 -
DELPHI 1996 91 -