Table 9

Comparison of different parton shower models with the data at = 197 GeV for all events, non-b events and b events for the six event-shape variables.

Event Sample

Model

T

ρ_H

B_T

B_W

C

All events

JETSET

χ²/d.o.f.

7.7/12

6.9/14

10.2/15

7.4/15

10.4/14

9.7/15

C.L.

0.74

0.91

0.75

0.92

0.66

0.79

HERWIG

χ²/d.o.f.

9.0/12

8.5/14

10.1/15

9.9/15

14.9/14

9.7/15

C.L.

0.62

0.81

0.75

0.77

0.32

0.78

ARIADNE

χ²/d.o.f.

6.9/12

7.6/14

6.4/15

9.0/15

12.5/14

9.7/15

C.L.

0.80

0.87

0.95

0.83

0.48

0.78

Non-b events

JETSET

χ²/d.o.f.

15.1/12

12.3/14

20.1/15

17.5/15

16.8/14

12.6/15

C.L.

0.18

0.50

0.13

0.23

0.21

0.56

HERWIG

χ²/d.o.f.

15.1/12

12.3/14

20.1/15

20.5/15

17.0/14

12.3/15

C.L.

0.18

0.50

0.13

0.11

0.20

0.58

ARIADNE

χ²/d.o.f.

13.4/12

12.9/14

16.1/15

19.7/15

14.8/14

10.3/15

C.L.

0.27

0.46

0.31

0.14

0.32

0.74

b events

JETSET

χ²/d.o.f.

11.1/9

11.6/13

12.8/13

11.8/14

12.5/12

12.1/14

C.L.

0.20

0.48

0.38

0.55

0.33

0.52

HERWIG

χ²/d.o.f.

11.5/9

10.6/13

14.5/13

13.7/14

11.0/12

11.9/14

C.L.

0.18

0.56

0.27

0.40

0.45

0.54

ARIADNE

χ²/d.o.f.

10.0/9

11.0/13

13.6/13

13.4/14

10.7/12

10.1/14

C.L.

0.27

0.53

0.32

0.42

0.47

0.68

The χ² over the numbers of degrees of freedom (d.o.f.) and the confidence levels are shown.

Mele for the L3 Collaboration PMC Physics A 2008 2:6   doi:10.1186/1754-0410-2-6