Experimental study of the triple-gluon vertex

Abreu, P.; Adam, W.; Adami, F.; Adye, T.; Åkesson, T. P. A.; Alekseev, G. D.; Allen, P.; Almehed, S.; Alted, F.; Alvsvaag, S. J.; Amaldi, U.; Anassontzis, E.; Apel, W. D.; Åsman, B.; Astier, P.; Augustin, J. E.; Augustinus, A.; Baillon, P.; Bambade, P.; Bara, F.; Barbiellini, G.; Bardin, D. Y.; Baroncelli, A.; Bärring, O.; Bartl, W.; Bates, M. J.; Baubillier, M.; Becks, K. H.; Beeston, C.; Begalli, M.; Beillière, P.; Belokopytov, I.; Beltran, P.; Benedic, D.; Benlloch, J.; Berggren, M.; Bertrand, Daniel; Biagi, S.; Bianchi, F.; Bibby, J.H.; Bilenky, M. S.; Billoir, P.; Bjarne, J.; Blöch, D.; Bogolubov, P. N.; Bollini, D.; Bolognese, T.; Bonapart, M.; Bonesini, M.; Booth, P.S.L.; Boratav, M.; Borgeaud, P.; Borner, H.; Bosio, C.; Botner, O.; Bouquet, B.; Bozzo, M.; Braibant, S.; Branchini, P.; Brand, K. D.; Brenner, R.; Bricman, C.; Brown, R.C.A.; Brümmer, N.; Brunet, J. M.; Bugge, L.; Buran, T.; Burmeister, H.; Buytaert, J.; Caccia, M.; Calvi, M.; Rozas, Aurelio Juste; Campagne, J. E.; Campion, A.; Camporesi, T.; Canale, V.; Cao, F.; Carroll, L.; Caso, C.; Castelli, E.; Gimenez, M. V. Castillo; Cattai, A.; Cavallo, F. R.; Cerritp, L.; Charpentier, Ph.; Checchia, P.; Chelkov, G.; Chevalier, L.; Chliapnikov, P.; Chorowicz, V.; Cirio, R.; Clara, M.P.; Contreras, J. L.; Contri, R.; Cosme, G.; Couchot, F.; Crawley, H. B.; Crennell, D.; Crosetti, G.; Crosland, N.; Crozon, M.; Cuevas, J.; Czellár, S.; Dagoret, S.; Dahl‐Jensen, E.; Dalmagne, B.; Dam, M.; Damgaard, G.; Darbo, G.; Daubie, E.; Dauncey, P. D.; Davenport, M.; David, P.; Angelis, A. De; Beer, M. De; Boeck, H. De; Clercq, C. De; Laso, M.D.M. De Fez; Groot, N. De; Vaissière, Ch De La; Lotto, B. De; Defoix, C.; Delikaris, D.; Delorme, Stefan; Delpierre, P.; Demaria, N.; Ciaccio, L. Di; Dijkstra, H.; Djama, F.; Dolbeau, J.; Doll, O.; Dönszelmann, M.; Doroba, K.; Dracos, M.; Drees, J.; Dris, M.; Dulinski, W.; Dzhelyadin, R.; Eek, L. O.; Eerola, P.; Ekelöf, T.; Ekspong, G.; Engel, J. P.; Falaleev, V.; Fassouliotis, D.; Fenyuk, A. B.; Alonso, M. Fernández; Ferrer, A.; Filippas, T. A.; Firestone, A.; Foeth, H.; Fokitis, E.; Folegati, P.; Fontanelli, F.; Forsbach, H.; Franek, B.; Fransson, K.; Frenkiel, P.; Fries, D. C.; Frodesen, A. G.; Frühwirth, R.; Fulda-Quenzer, F.; Furnival, K.; Fürstenau, H.; Fuster, J.; Gago, J.; Galeazzi, G.; Gamba, D.; Garcia, J. M. Vizan; Gasparini, U.; Gavillet, Ph.; Gazis, E. N.; Gerber, J.; Giacomelli, P.; Glitza, K. W.; Gokieli, R.; Golovatyuk, V.; Cadenas, J. J. Gomez Y; Goobar, A.; Gopal, G. P.; Górski, M.; Gracco, V.; Grant, A.; Grard, F.; Graziani, E.; Gritsaenko, I.A.; Gros, M. H.; Grosdidier, G.; Grossetete, B.; Gumenyuk, S.; Guy, J.; Hahn, F.; Hahn, M.; Haider, S.; Hajduk, Z.; Hakansson, A.; Hallgren, A.; Hamacher, K.; Monchenault, G. Hamel de; Harris, F. J.; Heck, B.; Herbst, I.; Hernández, J. J.; Herquet, P.; Herr, H.; Higón, E.; Hilke, H. J.; Hodgson, S. D.; Hofmokl, T.; Holmes, R.; Holmgren, S. O.; Holthuizen, D.; Hooper, J. E.; Houlden, M.; Hrubec, J.; Hulth, P. O.; Hultqvist, K.; Husson, D.; Hyams, B.; Ioannou, P.; Iversen, P. S.; Jackson, J.; Jałocha, P.; Jarlskog, G.; Jarry, P.; Jean‐Marie, B.; Johansson, Erik; Johnson, D.; Jonker, M.; Jönsson, L.; Juillot, P.; Kadyrov, R.B.; Kalkanis, G.; Kalmus, G.; Kantardjian, G.; Kapusta, F.; Kapusta, P.; Katsanevas, S.; Katsoufis, E.; Keränen, R.; Kesteman, J.; Khomenko, B. A.; King, B. J.; Klein, H.; Klempt, W.; Klovning, A.; Kluit, P.; Koehne, J. H.; Koene, B.; Kokkinias, P.; Kopf, M.; Koratzinos, M.; Korcyl, K.; Korytov, A.; Korzen, B.; Kostrikov, M.E.; Kourkoumelis, C.; Kreuzberger, T.; Królikowski, J.; Kruener-Marquis, U.; Krupinski, W.; Kucewicz, W.; Kurvinen, K.; Laakso, Mikko; Lambropoulos, C.; Lämsä, J.; Lanceri, L.; Lapchine, V.; Lapin, V.; Laugier, J. P.; Lauhakangas, R.; Laurikainen, P.; Leder, G.; Ledroit, F.; Lemonne, J.; Lenzen, G.; Lepeltier, V.; Letessier‐Selvon, A.; Lieb, E.; Lillethun, E.; Lindgren, J.; Lippi, I.; Llosá, R.; Loerstad, B.; Lokajı́ček, M.; Loken, J.; Aguera, M. A. Lopez; Lopez-Fernandez, A.; Los, M.; Loukas, D.; Lounis, A.; Lozano, J.; Lucock, R.; Lutz, P.; Lyons, L.; Mæhlum, G.; Magnussen, N.; Maillard, J.; Maltezos, A.; Maltezos, S.; Mandl, F.; Marco, J.; Margoni, M.; Marin, J. C.; Μάρκου, Α.; Mathis, L.; Motorras, F.; Matteuzzi, C.; Matthiae, G.; Mazzucato, M.; Cubbin, M. Mc; Kay, R. Mc; Nulty, R. Mc; Menichetti, E.; Meroni, C.; Meyer, W. T.; Mitaroff, W.; Mitselmakher, G.; Mjoernmark, U.; Moa, T.; Moeller, R.; Mönig, K.; Monge, M. R.; Morettini, P.; Mueller, H.; Myatt, G.; Naraghi, F.; Nau-Korzen, U.; Navarria, F. L.; Negri, P.; Nielsen, B. S.; Nijjhar, B.; Nikolaenko, V.; Obraztsov, V.; Orava, R.; Ouraou, A.; Pain, R.; Pałka, H.; Papadopoulou, Th. D.; Pape, L.; Passeri, A.; Pegoraro, M.; Perevozchikov, V.; Pernicka, M.; Perrotta, A.; Pimenta, M.; Pingot, O.; Pinsent, Andrew; Pol, M. E.; Polok, G.; Poropat, P.; Privitera, P.; Pullia, A.; Pyyhtia, J.; Rademakers, A.; Radojičić, D.; Ragazzi, S.; Range, W.H.; Ratofg, P.N.; Read, A. L.; Redaelli, N.; Regler, M.; Reid, D.; Renton, P.; Resvanis, L. K.; Richard, F.; Richardson, M.; Řídký, J.; Roditi, I.; Romero, A.; Ronchese, P.; Rosenberg, E. I.; Rossi, U.; Rosso, E.; Roudeau, P.; Rovelli, T.; Ruckstuhl, W.; Ruhlmann, V.; Ruiz, A.; Saarikko, H.; Sacquin, Y.; Sánchez, E.; Sánchez, J.; Sannino, M.; Schaeffer, M.; Schneider, H.; Scuri, F.; Segar, A. M.; Sekulin, R.; Sessa, M.; Sette, G.; Seufert, R.; Shellard, R. C.; Siegrist, P.; Simonetti, S.; Simonetto, F.; Sissakian, A.; Skaali, T. B.; Skeens, J.; Skjevling, G.; Smith, G. R.; Sosnowski, R.; Spassoff, T. S.; Spiriti, E.; Squarcia, S.; Staeck, H.; Stănescu, C.; Stavropoulos, G.; Stichelbaut, F.; Stocchi, A.; Strauss, J.; Strub, R.; Stubenrauch, C.I.; Szczekowski, M.; Szeptycka, M.; Szymański, P.; Tavernier, S.; Theodosiou, G.; Tilquin, A.; Timmermans, J.; Timofeev, V. G.; Tkatchev, L. G.; Toet, D. Z.; Topphol, A.K.; Tortora, L.; Trainor, M. T.; Treille, D.; Trevisan, U.; Trischuk, W.; Tristram, G.; Troncon, C.; Tsirou, A.; Tsyganov, E. N.; Turała, M.; Turchetta, R.; Turluer, M. L.; Tuuva, T.; Tyapkin, I. A.; Tyndel, M.; Tzamarias, S.; Udo, F.; Ueberschaer, S.; Uvarov, V.; Valenti, G.; Vallazza, E.; Ferrer, J. A. Valls; Apeldoorn, G. W. van; Dam, P. Van; Doninck, W. K. Van; Eijndhoven, N. van; Velde, C. Vander; Varela, J.; Vaz, P.; Vegni, G.; Velasco, J.; Ventura, L.; Vénus, W.; Verbeure, F.; Vertogradov, L. S.; Vibert, L.; Vilanova, D.; Vlasov, E.; Vodopyanov, A.; Vollmer, M.; Voulgaris, G.; Voutilainen, M.; Vrba, V.; Wahlen, H.; Walck, C.; Waldner, F.; Wayne, M.; Wehr, A.; Weilhammer, P.; Werner, John S.; Wetherell, A. M.; Wickens, J.; Wikne, J.; Wilkinson, G.; Williams, W. S. C.; Winter, M.; Wormald, D.; Wormser, G.; Woschnagg, K.; Yamdagni, N.; Yepes, P.; Zaitsev, A.; Zalewska, A.; Zalewski, P.; Zarubin, P. I.; Zevgolatakos, E.; Zhang, G.; Zimin, N. I.; Zitoun, R.; Funchal, R. Zukanovich; Zumerle, G.; Zúñiga, J.

doi:10.1016/0370-2693(91)90796-s

Cited by 43 publications

(14 citation statements)

References 19 publications

Supporting

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“…In the first phase of operation of the Large Electron Positron Collider (LEP) four-jet events were primarily used for measuring the eigenvalues of the Casimir operators of the underlying symmetry group, the QCD color factors [1][2][3][4][5]. The values of these color charges test whether the dynamics is indeed described by an SU(3) symmetry.…”

Section: Introductionmentioning

confidence: 99%

Four-jet angular distributions and color charge measurements: Leading order versus next-to-leading order

Nagy

Trocsanyi

1998

Phys. Rev. D

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We present the next-to-leading order perturbative QCD prediction to the four-jet angular distributions used by experimental collaborations at CERN LEP for measuring the QCD color charge factors. We compare our results to ALEPH data corrected to the parton level. We perform a leading order ''measurement'' of the QCD color factor ratios by fitting the leading order perturbative predictions to the next-to-leading order result. Our result shows that in an experimental analysis for measuring the color charge factors the use of the O(␣ s 3 ) QCD predictions instead of the O(␣ s 2 ) results may shift the center of the fit by a relative factor of 1ϩ2␣ s in the

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Section: Introductionmentioning

confidence: 99%

Four-jet angular distributions and color charge measurements: Leading order versus next-to-leading order

Nagy

Trocsanyi

1998

Phys. Rev. D

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“…Φ KSW = 1 2 ( [( p 1 × p 4 ), ( p 2 × p 3 )] + [( p 1 × p 3 ), ( p 2 × p 4 )]); • the angle between the two lowest energy jets [181]: α 3,4 = [ p 3 , p 4 ], where the p i denote the three-momenta of the energy-ordered jets (E 1 > E 2 > E 3 > E 4 ). The jets are defined using the Durham clustering with a distance measure y cut = 0.008.…”

Section: Colour Factors Measurement With 4-jet Eventsmentioning

confidence: 99%

Coherence Effects and Perturbative QCD Tests with the OPAL Detector at LEP

Boutemeur

2002

Fortschr. Phys.

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I report on results and methods from a set of analyses performed within the OPAL collaboration at CERN. The full available data sample collected at and near the Z0 resonance is used. Results concern colour‐field interference and coherence phenomena, quark and gluon jet properties, identified particles in quark and gluon jets, measurements of the QCD colour factors and relevant tests of recently improved perturbative QCD calculations. The challenge is that QCD is a quantum field theory that requires all orders in perturbation theory and non‐perturbative analysis to confront data at available energies. Thus, precise measurements can be thought as explorations of quantum field theory itself. Nonetheless, these tests and measurements have important practical applications, in the calculation of backgrounds to new physics and, for hadron collider particularly, in predictions for new particle cross‐sections.

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“…Previous analyses of LEP data have been performed to probe the underlying gauge structure of the theory [10][11][12][13]9]. The leading order perturbative prediction was fitted to distributions of four-jet angular correlations (normalised to the total number of the selected four-jet events), leaving the ratios of the colour factors as free parameters.…”

Section: Introductionmentioning

confidence: 99%

A simultaneous measurement of the QCD colour factors and the strong coupling

Abbiendi¹,

Ainsley²,

Åkesson³

et al. 2001

Eur. Phys. J. C

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Using data from e + e − annihilation into hadrons, taken with the OPAL detector at LEP at the Z pole between 1991 and 1995, we performed a simultaneous measurement of the colour factors of the underlying gauge group of the strong interaction, C F and C A , and the strong coupling, α s . The measurement was carried out by fitting next-to-leading order perturbative predictions to measured angular correlations of 4-jet events together with multi-jet related variables. Our results, C A = 3.02 ± 0.25(stat.) ± 0.49(syst.) , C F = 1.34 ± 0.13(stat.) ± 0.22(syst.) , α s (M Z ) = 0.120 ± 0.011(stat.) ± 0.020(syst.) , provide a test of perturbative QCD in which the only assumptions are non-abelian gauge symmetry and standard hadronization models. The measurements are in agreement with SU(3) expectations for C F and C A and the world average of α s (M Z ).

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Experimental study of the triple-gluon vertex

Cited by 43 publications

References 19 publications

Four-jet angular distributions and color charge measurements: Leading order versus next-to-leading order

Four-jet angular distributions and color charge measurements: Leading order versus next-to-leading order

Coherence Effects and Perturbative QCD Tests with the OPAL Detector at LEP

A simultaneous measurement of the QCD colour factors and the strong coupling

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