Search for color reconnection effects in $e^{+} e^{-} \to W^{+} W^{-} \to$ hadrons through particle flow studies at LEP

A search for colour reconnection effects in hadronic decays of W pairs is performed with the L3 detector at centre-of-mass energies between 189 and 209 GeV. The analysis is based on the study of the particle flow between jets associated to the same W boson and between two different W bosons in q q ̄ q q ̄ events. The ratio of particle yields in the different interjet regions is found to be sensitive to colour reconnection effects implemented in some hadronization models. The data are compared to different models with and without such effects. An extreme scenario of colour reconnection is ruled out.

electron positron: colliding beams
electron positron: annihilation
W: pair production
W: hadronic decay
quark: pair production
color: recombination
hadron: multiple production
jet: particle flow
model: hadronization
W: leptonic decay

References(32)

Figures(10)

Jet Final States in W W Pair Production and Color Screening in the QCD Vacuum

Gosta Gustafson
(
- Lund U.
)
,
Ulf Pettersson
(
- Lund U.
)
,
P.M. Zerwas
(
- Aachen, Tech. Hochsch.
)

- Phys.Lett.B 209 (1988) 90-94
•
DOI:
- 10.1016/0370-2693(88)91836-9

Does the W mass reconstruction survive QCD effects?

Torbjorn Sjostrand
(
- CERN
)
,
Valery A. Khoze
(
- Durham U.
)

- Phys.Rev.Lett. 72 (1994) 28-31
•
e-Print:
- hep-ph/9310276
•
DOI:
- 10.1103/PhysRevLett.72.28

On Color rearrangement in hadronic W+ W- events

Torbjorn Sjostrand
(
- CERN
)
,
Valery A. Khoze
(
- Durham U.
)

- Z.Phys.C 62 (1994) 281-310
•
e-Print:
- hep-ph/9310242
•
DOI:
- 10.1007/BF01560244

Soft particle spectra as a probe of interconnection effects in hadronic W+ W- events

Valery A. Khoze
(
- Frascati and
- CERN
)
,
Torbjorn Sjostrand
(
- Lund U., Dept. Theor. Phys.
)

- Eur.Phys.J.C 6 (1999) 271-284
•
e-Print:
- hep-ph/9804202
•
DOI:
- 10.1007/s100520050338

Color interference and confinement effects in W pair production

Gosta Gustafson
(
- Lund U.
)
,
Jari Hakkinen
(
- Lund U.
)

- Z.Phys.C 64 (1994) 659-664
•
DOI:
- 10.1007/BF01957774

Measurement of the $W$ boson mass and $W^{+} W^{-}$ production and decay properties in $e^{+} e^{-}$ collisions at $\sqrt{s}$ = 172-GeV

OPAL

Collaboration

•

K. Ackerstaff

et al.

- Eur.Phys.J.C 1 (1998) 395-424
•
e-Print:
- hep-ex/9709006
•
DOI:
- 10.1007/s100520050093

Color reconnection studies in e+ e- ---> W+ W- at S**(1/2) = 183-GeV

OPAL

Collaboration

•

G. Abbiendi

et al.

- Phys.Lett.B 453 (1999) 153-168
•
e-Print:
- hep-ex/9901019
•
DOI:
- 10.1016/S0370-2693(99)00309-3

Charged and identified particles in the hadronic decay of W bosons and in e+ e- ---> q anti-q from 130-GeV to 200-GeV

DELPHI

Collaboration

•

P. Abreu
(
- Lisbon, IST and
- LIP, Lisbon
)

et al.

- Eur.Phys.J.C 18 (2000) 203-228,
- Eur.Phys.J.C 25 (2002) 493 (erratum)
•
e-Print:
- hep-ex/0103031
•
DOI:
- 10.1007/s100520000528

The Construction of the L3 Experiment

L3

Collaboration

•

B. Adeva
(
- CERN
)

et al.

- Nucl.Instrum.Meth.A 289 (1990) 35-102
•
DOI:
- 10.1016/0168-9002(90)90250-A

Test beam results for an upgraded forward tagger of the L3 Experiment at LEP-2

et al.

- Nucl.Instrum.Meth.A 349 (1994) 345-355
•
DOI:
- 10.1016/0168-9002(94)91198-3

The L3 silicon microvertex detector

L3 SMD

Collaboration

•

M. Acciarri
(
- Aachen, Tech. Hochsch.
)

et al.

- Nucl.Instrum.Meth.A 351 (1994) 300-312
•
DOI:
- 10.1016/0168-9002(94)91357-9

The L3 lead scintillating fiber calorimeter

G. Basti
(
- Rome U. and
- INFN, Rome
)
,
Mario Campanelli
(
- Rome U. and
- INFN, Rome
)
,
F. Cavallari
(
- Rome U. and
- INFN, Rome
)
,
F. de Notaristefani
(
- Rome U. and
- INFN, Rome
)
,
M. Diemoz
(
- Rome U. and
- INFN, Rome
)

et al.

- Nucl.Instrum.Meth.A 374 (1996) 293-298
•
DOI:
- 10.1016/0168-9002(96)00206-9

Luminosity Measurement in the L3 Detector at LEP

et al.

- Nucl.Instrum.Meth.A 381 (1996) 236-266
•
DOI:
- 10.1016/S0168-9002(96)00734-6

The Forward muon detector of L3

et al.

- Nucl.Instrum.Meth.A 383 (1996) 342-366
•
DOI:
- 10.1016/S0168-9002(96)00777-2

Space, time and color in hadron production via e+ e- ---> Z0 and e+ e- ---> W+ W-

John R. Ellis
(
- CERN
)
,
Klaus Geiger
(
- CERN
)

- Phys.Rev.D 54 (1996) 1967-1990
•
e-Print:
- hep-ph/9511321
•
DOI:
- 10.1103/PhysRevD.54.1967

Reconnecting colored dipoles

Leif Lonnblad
(
- CERN
)

- Z.Phys.C 70 (1996) 107-114
•
DOI:
- 10.1007/s002880050087

Color reconnection and Bose-Einstein effects

B.R. Webber
(
- Cambridge U.
)

- J.Phys.G 24 (1998) 287-296
•
e-Print:
- hep-ph/9708463
•
DOI:
- 10.1088/0954-3899/24/2/003

A Generalized area law for hadronic string re-interactions

Johan Rathsman
(
- SLAC
)

- Phys.Lett.B 452 (1999) 364-371
•
e-Print:
- hep-ph/9812423
•
DOI:
- 10.1016/S0370-2693(99)00291-9

High-energy physics event generation with PYTHIA 6.1

et al.

- Comput.Phys.Commun. 135 (2001) 238-259
•
e-Print:
- hep-ph/0010017
•
DOI:
- 10.1016/S0010-4655(00)00236-8

ARIADNE version 4: A Program for simulation of QCD cascades implementing the color dipole model

Leif Lonnblad
(
- DESY
)

- Comput.Phys.Commun. 71 (1992) 15-31,
- Comput. Phys. Commun. 71 (1992) 15-31 and Hamburg DESY - DESY 92-046 (92/02,rec.Apr.) 15 p
•
DOI:
- 10.1016/0010-4655(92)90068-A

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

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.

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

HERWIG: A Monte Carlo event generator for simulating hadron emission reactions with interfering gluons. Version 5.1 - April 1991

G. Marchesini
(
- Parma U. and
- INFN, Parma
)
,
B.R. Webber
(
- Cambridge U.
)
,
G. Abbiendi
(
- Padua U. and
- INFN, Padua
)
,
I.G. Knowles
(
- Glasgow U.
)
,
M.H. Seymour
(
- Cambridge U.
)

et al.

- Comput.Phys.Commun. 67 (1992) 465-508,
- Comput. Phys. Commun. 67 (1992) 465-508 and Hamburg DESY - DESY 91-048 (91/05,rec.Jul.) 49 p
•
DOI:
- 10.1016/0010-4655(92)90055-4

New clustering algorithm for multi - jet cross-sections in e+ e- annihilation

S. Catani
(
- Cambridge U. and
- INFN, Florence
)
,
Yuri L. Dokshitzer
(
- St. Petersburg, INP and
- Lund U.
)
,
M. Olsson
(
- Lund U.
)
,
G. Turnock
(
- Cambridge U.
)
,
B.R. Webber
(
- Cambridge U.
)

- Phys.Lett.B 269 (1991) 432-438
•
DOI:
- 10.1016/0370-2693(91)90196-W

Finding jets and summing soft gluons: A New algorithm

N. Brown
(
- Rutherford
)
,
W.James Stirling
(
- Durham U.
)

- Z.Phys.C 53 (1992) 629-636
•
DOI:
- 10.1007/BF01559740

New jet cluster algorithms: Next-to-leading order QCD and hadronization corrections

- Nucl.Phys.B 370 (1992) 310-334,
- Nucl.Phys.B 523 (1998) 681-681 (erratum)
•
DOI:
- 10.1016/0550-3213(92)90289-N

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Search for color reconnection effects in e+e−→W+W−→e^{+} e^{-} \to W^{+} W^{-} \toe+e−→W+W−→ hadrons through particle flow studies at LEP

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Search for color reconnection effects in $e^{+} e^{-} \to W^{+} W^{-} \to$ hadrons through particle flow studies at LEP