Studies of jet production rates ine + e ? annihilation atE cm=29 GeV

Bethke, S.; Abrams, G. S.; Adolphsen, C.; Akerlof, C.; Alexander, J.; Alvarez, M.; Baden, A.; Ballam, J.; Barish, B. C.; Barklow, T.; Barnett, B. A.; Bartelt, J.; Blockus, D.; Bonvicini, G.; Boyarski, A. M.; Boyer, J.; Brabson, B.; Breakstone, A.; Brom, J.-M.; Bullos, F.; Burchat, P. R.; Burke, D. L.; Butler, F.; Calviño, F.; Cence, R. J.; Chapman, J.; Cords, D.; Coupal, D.P.; DeStaebler, H.; Dorfan, D. E.; Dorfan, J.; Drell, P. S.; Feldman, G. J.; Fernández, E.; Field, R. C.; Ford, W. T.; Fordham, C.; Frey, Frank M.; Fujino, D.; Gan, K. K.; Gidal, G.; Glanzman, T.; Goldhaber, G.; Green, A.; Grosse‐Wiesmann, P.; Haggerty, J. S.; Hanson, G.; Harr, R.; Harris, F. A.; Hawkes, C. M.; Hayes, K.; Herrup, D.; Heusch, C. A.; Himel, T.; Hoenk, Michael E.; Hutchinson, D. P.; Hylen, J.; Innes, W. R.; Jaffré, M.; Jaros, J. A.; Juricic, I.; Kadyk, J. A.; Karlen, D.; Kent, J.; Klein, S. R.; Komamiya, S.; Koska, W.; Kozanecki, W.; Lankford, A. J.; Larsen, R. R.; Levi, M. E.; Li, Z.; Litke, A. M.; Lüth, V.; Matthews, John; Meyer, D. I.; Milliken, B.; Moffeit, K. C.; Müller, L.; Nash, J.; Nelson, M. E.; Nitz, D.; Ogren, H.; O’Shaughnessy, K.; Parker, S. I.; Peck, C.; Petersen, A.; Petradza, M.; Porter, F. C.; Rankin, P.; Riles, K.; Rust, D. R.; Sadrozinski, H. F-W.; Schalk, T.; Schmidke, W. B.; Schwarz, A. S.; Seiden, A.; Smith, J. G.; Snyder, A.; Soderstrom, E.; Stoker, D. P.; Stroynowski, R.; Thun, R.; Trilling, G. H.; Tschirhart, R.; Kooten, R. Van; Veltman, H.; Voruganti, P.; Wagner, S. R.; Weber, P.; Weinstein, A. J.; Weir, A. J.; Weisz, S.; White, S. L.; Wicklund, E.; Wood, D.; Wu, D. Y.

doi:10.1007/bf01506527

Cited by 27 publications

(5 citation statements)

References 21 publications

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“…The data were compared with the leading-logarithmic-approximation (LLA) model . Similar studies based on the MARK II data at PEP ( √ s = 29 GeV) are found in [173] and [174] using the so-called "optimised perturbation theory", i.e., by fitting the scale. An earlier attempt to establish the non-abelian nature of QCD from a study of multijet events was made by the AMY collaboration at the TRISTAN e + e − storage ring at the KEK laboratory [175].…”

Section: Quantitative Studies Of Qcd At Petra and Pepsupporting

confidence: 68%

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JETS and QCD: a historical review of the discovery of the quark and gluon jets and its impact on QCD

Ali

Krämer

2011

EPJ H

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Abstract. The observation of quark and gluon jets has played a crucial role in establishing Quantum Chromodynamics [QCD] as the theory of the strong interactions within the Standard Model of particle physics. The jets, narrowly collimated bundles of hadrons, reflect configurations of quarks and gluons at short distances. Thus, by analysing energy and angular distributions of the jets experimentally, the properties of the basic constituents of matter and the strong forces acting between them can be explored. In this review, which is primarily a description of the discovery of the quark and gluon jets and the impact of their observation on Quantum Chromodynamics, we elaborate, in particular, the role of the gluons as the carriers of the strong force. Focusing on these basic points, jets in e + e − collisions will be in the foreground of the discussion and we will concentrate on the theory that was contemporary with the relevant experiments at the electron-positron colliders. In addition we will delineate the role of jets as tools for exploring other particle aspects in ep and pp/pp collisions -quark and gluon densities in protons, measurements of the QCD coupling, fundamental 2-2 quark/gluon scattering processes, but also the impact of jet decays of top quarks, and W ± , Z bosons on the electroweak sector. The presentation to a large extent is formulated in a non-technical language with the intent to recall the significant steps historically and convey the significance of this field also to communities beyond high energy physics.

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Section: Quantitative Studies Of Qcd At Petra and Pepsupporting

confidence: 68%

Section: Quantitative Studies Of Qcd At Petra and Pepsupporting

confidence: 68%

JETS and QCD: a historical review of the discovery of the quark and gluon jets and its impact on QCD

Ali

Krämer

2011

EPJ H

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“…Then there will be roughly 4 × 10 4 four jet events with two tagged b-quarks (using the JADE scheme with y cut = 0.01, as in figs. [3][4][5][6]. This is an order of magnitude less than the total number of four jet events, but in return we gain greater power to discriminate between the various terms in the four jet cross section, particularly between the Abelian, QED-like term and the non-Abelian term in the two quark, two gluon cross section.…”

Section: Discussionmentioning

confidence: 99%

“…Important results have been achieved. The strong coupling constant α s has been determined from jet rates and from shape variables [2] and both the flavour independence [3] and the running with √ s [4] have been verified. Three- [5] and four-jet [6] distributions have been studied and their behaviour agrees with QCD predictions calculated to second order in α s .…”

Section: Introductionmentioning

confidence: 95%

QCD effects and b -tagging at LEP I

Moretti

Tausk

1996

Zeitschrift f�r Physik C Particles and Fields

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We analyze the impact of using b-tagged samples in studying non-Abelian effects due to QCD in e + e − → 4jet events at √ s = M Z 0 , using angular variable analyses and comparisons with e + e − → 3jetγ events. We find that QCD effects are largely enhanced in b-quark samples with respect to 'unflavoured' ones, where energyordering is used to distinguish between gluon and quark jets. We show that the b-quark mass influences the angular distributions significantly and should not be neglected.

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“…We proceed by collecting various measurements spanning PETRA, PEP, TRIS-TAN, LEP 102,103,52,104,105,106,107], and in our case, SLC. These measurements represent energies Vs=22-92 GeV in ee-machines.…”

Section: Running Of Amentioning

confidence: 99%

A calorimetric measurement of the strong coupling constant in electron-positron annihilation at a center-of-mass energy of 91.6 GeV [Thesis]

Martirena¹

1994

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Studies of jet production rates ine + e ? annihilation atE cm=29 GeV

Abstract: Production rates of multijet hadronic final states are studied in e § -annihilation at 29 GeV center of mass energy. QCD shower model calculations with exact first order matrix element weighting at the first gluon vertex are capable of reproducing

Cited by 27 publications

References 21 publications

JETS and QCD: a historical review of the discovery of the quark and gluon jets and its impact on QCD

JETS and QCD: a historical review of the discovery of the quark and gluon jets and its impact on QCD

QCD effects and b -tagging at LEP I

A calorimetric measurement of the strong coupling constant in electron-positron annihilation at a center-of-mass energy of 91.6 GeV [Thesis]

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