Ερευνητικό υλικό ΕΚΠΑ

Coherent soft particle production in Z decays into three jets

Αγγλικά

Low-energy particle production perpendicular to the event plane in
three-jet events produced in Z decays in e(+)e(-) annihilation is
measured and compared to that perpendicular to the event axis in two-jet
events. The topology dependence of the hadron production ratio is found
to agree with a leading-order QCD prediction. This agreement and
especially the need for the presence of a destructive interference term
gives evidence for the coherent nature of gluon radiation. Hadron
production in three-jet events is found to be directly proportional to a
single topological scale function of the inter-jet angles. The slope of
the dependence of the multiplicity with respect to the topological scale
was measured to be 2.211 +/- 0.014(stat.) +/- 0.053(syst.) in good
agreement with the expectation given by the colour-factor ratio C-A/C-F
= 9/4. This result strongly supports the assumption of local
parton-hadron duality, LPHD, at low hadron momentum. (C) 2004 Published
by Elsevier B.V.

2005

Abdallah, J
Abreu, P
Adam, W
Adzic, P
Albrecht, T and
Alderweireld, T
Alemany-Fernandez, R
Allmendinger, T and
Allport, PP
Amaldi, U
Amapane, N
Amato, S
Anashkin, E
and Andreazza, A
Andringa, S
Anjos, N
Antilogus, P
Apel,
WD
Arnoud, Y
Ask, S
Asman, B
Augustin, JE and
Augustinus, A
Baillon, P
Ballestrero, A
Bambade, P and
Barbier, R
Bardin, D
Barker, G
Baroncelli, A
Battaglia,
M
Baubillier, M
Becks, KH
Begalli, M
Behrmann, A and
Ben-Haim, E
Benekos, N
Benvenuti, A
Berat, C
Berggren, M
and Berntzon, L
Bertrand, D
Besancon, M
Besson, N
Bloch,
D
Blom, M
Bluj, M
Bonesini, M
Boonekamp, M
Booth,
PSL
Borisov, G
Botner, O
Bouquet, B
Bowcock, TJV and
Boyko, I
Bracko, M
Brenner, R
Brodet, E
Bruckman, P and
Brunet, JM
Bugge, L
Buschmann, P
Calvi, M
Camporesi, T
and Canale, V
Carena, F
Castro, N
Cavallo, F
Chapkin, M
and Charpentier, P
Checchia, P
Chierici, R
Chliapnikov, P
and Chudoba, J
Chung, SU
Cieslik, K
Collins, P
Contri, R
and Cosme, G
Cossutti, E
Costa, MJ
Crennell, D
Cuevas, J
and D'Hondt, J
Dalmau, J
da Silva, T
Da Silva, W
Della
Ricca, G
De Angelis, A
De Boer, W
De Clercq, C
De Lotto,
B
De Maria, N
De Min, A
de Paula, L
Di Ciaccio, L
Di
Simone, A
Doroba, K
Drees, J
Dris, M
Eigen, G and
Ekelof, T
Ellert, M
Elsing, M
Santo, MCE
Fanourakis, G
and Fassouliotis, D
Feindt, M
Fernandez, J
Ferrer, A and
Ferro, F
Flagmeyer, U
Foeth, H
Fokitis, E
Fulda-Quenzer,
F
Fuster, J
Gandelman, M
Garcia, C
Gavillet, P and
Gazis, E
Gokieli, R
Golob, B
Gomez-Ceballos, G and
Goncalves, P
Graziani, E
Grosdidier, G
Grzelak, K
Guy, J
and Haag, C
Hallgren, A
Hamacher, K
Hamilton, K
Haug, S
and Hauler, R
Hedberg, V
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Hoffman, J
and Holmgren, SO
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Hultqvist, K and
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Jeans, D
Johansson, EK
and Johansson, PD
Jonsson, P
Joram, C
Jungermann, L and
Kapusta, F
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Katsoufis, E
Kernel, G and
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King, BT
Kjaer, NJ
and Kluit, P
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Kouznetsov, O and
Krumstein, Z
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Ledroit, F
and Leinonen, L
Leitner, R
Lemonne, J
Lepeltier, V and
Lesiak, T
Liebig, W
Liko, D
Lipniacka, A
Lopes, JH and
Lopez, JM
Loukas, D
Lutz, P
Lyons, L
MacNaughton, J and
Malek, A
Maltezos, S
Mandl, E
Marco, J
Marco, R and
Marechal, B
Margoni, M
Marin, JC
Mariotti, C
Markou, A
and Martinez-Rivero, C
Masik, J
Mastroyiannopoulos, N and
Matorras, F
Matteuzzi, C
Mazzucato, E
Mazzucato, M and
McNulty, R
Meroni, C
Migliore, E
Mitaroff, W
Mjoernmark,
U
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Moenig, K
Monge, R
Montenegro, J
and Moraes, D
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K
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Mundim, L
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Myatt, G
and Myklebust, T
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Navarria, E
Nawrocki, K and
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and Olshevski, A
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Osterberg, K
Ouraou,
A
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Paiano, S
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Palka, H
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L
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Reinhardt, R
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Rodriguez, D
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Rovelli, T
Ruhlmann-Kleider, V and
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Siskian, A
Smadja, G
Smirnova, O
Sokolov, A
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Spassov, T
Stanitzki, M and
Stocchi, A
Strauss, J
Stugu, B
Szczekowski, M
Szeptycka,
M
Szumlak, T
Tabarelli, T
Taffard, AC
Tegenfeldt, E and
Timmermans, J
Tkatchev, L
Tobin, M
Todorovova, S
Tome, B
and Tonazzo, A
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Travnicek, P
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Tristram, G
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P
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Wicke, D
Wickens, J and
Wilkinson, G
Winter, M
Witek, M
Yushchenko, O
Zalewska,
A
Zalewski, P
Zavrtanik, D
Zhuravlov, V
Zimin, NI and
Zintchenko, A
Zupan, M

PHYSICS LETTERS B

ELSEVIER SCIENCE BV

605

1-2

37-48

https://doi.org/10.1016/j.physletb.2004.10.059

10.1016/j.physletb.2004.10.059

https://pergamos.lib.uoa.gr/uoa/dl/object/3093204