Spin correlations in Monte Carlo simulations

We show that the algorithm originally proposed by Collins and Knowles for spin correlations in the QCD parton shower can be used in order to include spin correlations between the production and decay of heavy particles in Monte Carlo event generators. This allows correlations to be included while maintaining the step-by-step approach of the Monte Carlo event generation process. We present examples of this approach for both the Standard and Minimal Supersymmetric Standard Models. A merger of this algorithm and that used in the parton shower is discussed in order to include all correlations in the perturbative phase of event generation. Finally we present all the results needed to implement this algorithm for the Standard and Minimal Supersymmetric Standard Models.

gauge field theory: SU(3) x SU(2) x U(1)
supersymmetry
polarization: effect
spin: correlation
electron positron: annihilation
hadron hadron: interaction
sparticle: electroproduction
sparticle: pair production
top: pair production
top

References(43)

Figures(0)

Spin correlations in production and subsequent decay of neutralinos

Gudrid A. Moortgat-Pick
(
- Wurzburg U. and
- Vienna U.
)
,
H. Fraas
(
- Wurzburg U.
)

- Phys.Rev.D 59 (1999) 015016
•
e-Print:
- hep-ph/9708481
•
DOI:
- 10.1103/PhysRevD.59.015016

Spin correlations in production and decay of charginos

Gudrid A. Moortgat-Pick
(
- Wurzburg U.
)
,
H. Fraas
(
- Wurzburg U.
)
,
A. Bartl
(
- Vienna U.
)
,
W. Majerotto
(
- Vienna, OAW
)

- Eur.Phys.J.C 7 (1999) 113-122
•
e-Print:
- hep-ph/9804306
•
DOI:
- 10.1007/s100529800956

Polarization and spin effects in neutralino production and decay

Gudrid A. Moortgat-Pick
(
- Wurzburg U.
)
,
H. Fraas
(
- Wurzburg U.
)
,
A. Bartl
(
- Vienna U.
)
,
W. Majerotto
(
- Vienna, OAW
)

- Eur.Phys.J.C 9 (1999) 521-534,
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•
e-Print:
- hep-ph/9903220
•
DOI:
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Spin Correlations in Monte Carlo Event Generators

John C. Collins
(
- IIT, Chicago
)

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I.G. Knowles
(
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)

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(
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)

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I.G. Knowles
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)

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HERWIG 6: An Event generator for hadron emission reactions with interfering gluons (including supersymmetric processes)

G. Corcella
(
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)
,
I.G. Knowles
(
- Edinburgh U.
)
,
G. Marchesini
(
- Milan Bicocca U. and
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S. Moretti
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- CERN
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et al.

- JHEP 01 (2001) 010
•
e-Print:
- hep-ph/0011363
•
DOI:
- 10.1088/1126-6708/2001/01/010

HERWIG 6.3 release note

G. Corcella
(
- Rochester U.
)
,
I.G. Knowles
(
- Edinburgh U.
)
,
G. Marchesini
(
- Milan Bicocca U. and
- INFN, Milan
)
,
S. Moretti
(
- CERN
)
,
K. Odagiri
(
- KEK, Tsukuba
)

et al.

e-Print:
- hep-ph/0107071

High-energy physics event generation with PYTHIA 5.7 and JETSET 7.4

Torbjorn Sjostrand
(
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