Angular correlations of lepton pairs from vector boson and top quark decays in Monte Carlo simulations

We explain how angular correlations in leptonic decays of vector bosons and top quarks can be included in Monte Carlo parton showers, in particular those matched to NLO QCD computations. We consider the production of

n

pairs of leptons, originating from the decays of

n

electroweak vector bosons or of

n

top quarks, in the narrow-width approximation. In the latter case, the information on the

n

b

quarks emerging from the decays is also retained. We give results of implementing this procedure in MC@NLO

QCD
NLO computations
MC simulations
gauge boson: leptonic decay
Z0
W
top
quark: semileptonic decay
bottom
lepton: pair production

References(13)

Figures(0)

Matching NLO QCD computations and parton shower simulations

Stefano Frixione
(
- Annecy, LAPP
)
,
Bryan R. Webber
(
- Cambridge U.
)

- JHEP 06 (2002) 029
•
e-Print:
- hep-ph/0204244
•
DOI:
- 10.1088/1126-6708/2002/06/029

Matching NLO QCD and parton showers in heavy flavor production

Stefano Frixione
(
- INFN, Genoa
)
,
Paolo Nason
(
- INFN, Milan
)
,
Bryan R. Webber
(
- CERN and
- Cambridge U.
)

- JHEP 08 (2003) 007
•
e-Print:
- hep-ph/0305252
•
DOI:
- 10.1088/1126-6708/2003/08/007

A New method for combining NLO QCD with shower Monte Carlo algorithms

Paolo Nason
(
- INFN, Milan
)

- JHEP 11 (2004) 040
•
e-Print:
- hep-ph/0409146
•
DOI:
- 10.1088/1126-6708/2004/11/040

The MC@NLO 3.3 Event Generator

Stafano Frixione
(
- INFN, Genoa
)
,
Bryan R. Webber
(
- Cambridge U.
)

e-Print:
- hep-ph/0612272

Single top production and decay at next-to-leading order

- Phys.Rev.D 70 (2004) 094012
•
e-Print:
- hep-ph/0408158
•
DOI:
- 10.1103/PhysRevD.70.094012

Single top quark production and decay at next-to-leading order in hadron collision

Qing-Hong Cao
(
- Michigan State U.
)
,
C.-P. Yuan
(
- Michigan State U.
)

- Phys.Rev.D 71 (2005) 054022
•
e-Print:
- hep-ph/0408180
•
DOI:
- 10.1103/PhysRevD.71.054022

A Positive-weight next-to-leading-order Monte Carlo for Z pair hadroproduction

Paolo Nason
(
- INFN, Milan Bicocca
)
,
Giovanni Ridolfi
(
- Genoa U. and
- INFN, Genoa
)

- JHEP 08 (2006) 077
•
e-Print:
- hep-ph/0606275
•
DOI:
- 10.1088/1126-6708/2006/08/077

Uncertainties of predictions from parton distributions. 1: Experimental errors

- Eur.Phys.J.C 28 (2003) 455-473
•
e-Print:
- hep-ph/0211080
•
DOI:
- 10.1140/epjc/s2003-01196-2

Longitudinally invariant $K_t$ clustering algorithms for hadron hadron collisions

S. Catani
(
- CERN
)
,
Yuri L. Dokshitzer
(
- St. Petersburg, INP and
- Lund U.
)
,
M.H. Seymour
(
- Lund U.
)
,
B.R. Webber
(
- CERN
)

- Nucl.Phys.B 406 (1993) 187-224
•
DOI:
- 10.1016/0550-3213(93)90166-M

Top quark pair production and decay at hadron colliders

W. Bernreuther
(
- Aachen, Tech. Hochsch.
)
,
A. Brandenburg
(
- Aachen, Tech. Hochsch. and
- DESY
)
,
Z.G. Si
(
- Shandong U.
)
,
P. Uwer
(
- Karlsruhe U., TTP and
- CERN
)

- Nucl.Phys.B 690 (2004) 81-137
•
e-Print:
- hep-ph/0403035
•
DOI:
- 10.1016/j.nuclphysb.2004.04.019

Improved spin basis for angular correlation studies in single top quark production at the Tevatron

Gregory Mahlon
(
- Michigan U.
)
,
Stephen J. Parke
(
- Fermilab
)

- Phys.Rev.D 55 (1997) 7249-7254
•
e-Print:
- hep-ph/9611367
•
DOI:
- 10.1103/PhysRevD.55.7249

Single top quark production at hadron colliders

T. Stelzer
(
- Illinois U., Urbana
)
,
Z. Sullivan
(
- Illinois U., Urbana
)
,
S. Willenbrock
(
- Illinois U., Urbana
)

- Phys.Rev.D 58 (1998) 094021
•
e-Print:
- hep-ph/9807340
•
DOI:
- 10.1103/PhysRevD.58.094021

Angular correlations in single-top-quark and Wjj production at next-to-leading order

Zack Sullivan
(
- Argonne
)

- Phys.Rev.D 72 (2005) 094034
•
e-Print:
- hep-ph/0510224
•
DOI:
- 10.1103/PhysRevD.72.094034