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    "title": "JADE observes planar three-jet events consistent with gluon radiation",
    "summary": "The JADE collaboration analysed 287 hadronic electron–positron events recorded at centre-of-mass energies of 27.7 and 30 GeV. The data contained an excess of planar events relative to its two-jet fragmentation model. A rest-frame analysis of the broad side of each selected event supported a three-jet structure; comparisons with simulated quark–antiquark–gluon events supported gluon bremsstrahlung as an interpretation.",
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    "area": "Experimental particle physics",
    "topic": "Physics",
    "year": 1980,
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      "E. Elsen",
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      "A. Petersen",
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      "R. D. Heuer",
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      "T. Nozaki",
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      "A. Wagner",
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      "F. Foster",
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      "H. Wriedt",
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      "J. Armitage",
      "I. Duerdoth",
      "J. Hassard",
      "F. Loebinger",
      "B. King",
      "A. Macbeth",
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      "P. G. Murphy",
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      "K. Stephens",
      "D. Clarke",
      "M. C. Goddard",
      "R. Hedgecock",
      "R. Marshall",
      "G. F. Pearce",
      "M. Imori",
      "T. Kobayashi",
      "S. Komamiya",
      "M. Koshiba",
      "M. Minowa",
      "S. Orito",
      "A. Sato",
      "T. Suda",
      "H. Takeda",
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        "title": "Observation of planar three-jet events in e+e− annihilation and evidence for gluon bremsstrahlung",
        "url": "https://uebungen.physik.uni-heidelberg.de/c/image/exp/f/vorlesung/20202/1189/Jade_2.pdf",
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        "description": "The observed hadrons and event shapes are measured; assignment of the low-energy jet to a gluon and the bremsstrahlung interpretation use the stated fragmentation and QCD models. The analysis does not uniquely exclude every alternative model; the authors note that arbitrary non-Gaussian fragmentation tails were not tested. Their alpha_s=0.17±0.04 estimate is model-dependent and the stated uncertainty is statistical only. Additional event-selection and detector details are in a separate source. This 1980 JADE result is distinct from contemporaneous TASSO, MARK J and PLUTO studies and is not a sole-priority claim.",
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        {
          "citation": "Observation of planar three-jet events in e+e− annihilation and evidence for gluon bremsstrahlung",
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      "statement": "# JADE observes planar three-jet events consistent with gluon radiation\n\nThe JADE collaboration analysed 287 hadronic electron–positron events recorded at centre-of-mass energies of 27.7 and 30 GeV. The data contained an excess of planar events relative to its two-jet fragmentation model. A rest-frame analysis of the broad side of each selected event supported a three-jet structure; comparisons with simulated quark–antiquark–gluon events supported gluon bremsstrahlung as an interpretation.\n\n## Scientific scope\n\nThe observed hadrons and event shapes are measured; assignment of the low-energy jet to a gluon and the bremsstrahlung interpretation use the stated fragmentation and QCD models. The analysis does not uniquely exclude every alternative model; the authors note that arbitrary non-Gaussian fragmentation tails were not tested. Their alpha_s=0.17±0.04 estimate is model-dependent and the stated uncertainty is statistical only. Additional event-selection and detector details are in a separate source. This 1980 JADE result is distinct from contemporaneous TASSO, MARK J and PLUTO studies and is not a sole-priority claim.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nW. Bartel; T. Canzler; D. Cords; P. Dittmann; R. Eichler; R. Felst; D. Haidt; S. Kawabata; H. Krehbiel; B. Naroska; L. H. O’Neill; J. Olsson; P. Steffen; W. L. Yen; E. Elsen; M. Helm; A. Petersen; P. Warming; G. Weber; H. Drumm; J. Heintze; G. Heinzelmann; R. D. Heuer; J. von Krogh; P. Lennert; H. Matsumura; T. Nozaki; H. Rieseberg; A. Wagner; D. C. Darvill; F. Foster; G. Hughes; H. Wriedt; J. Allison; J. Armitage; I. Duerdoth; J. Hassard; F. Loebinger; B. King; A. Macbeth; H. Mills; P. G. Murphy; H. Prosper; K. Stephens; D. Clarke; M. C. Goddard; R. Hedgecock; R. Marshall; G. F. Pearce; M. Imori; T. Kobayashi; S. Komamiya; M. Koshiba; M. Minowa; S. Orito; A. Sato; T. Suda; H. Takeda; Y. Totsuka; Y. Watanabe; S. Yamada; C. Yanagisawa\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [Observation of planar three-jet events in e+e− annihilation and evidence for gluon bremsstrahlung](https://uebungen.physik.uni-heidelberg.de/c/image/exp/f/vorlesung/20202/1189/Jade_2.pdf)\n",
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      "title": "JADE observes planar three-jet events consistent with gluon radiation"
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    "title": "JADE observes planar three-jet events consistent with gluon radiation",
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    "scope": "The JADE collaboration analysed 287 hadronic electron–positron events recorded at centre-of-mass energies of 27.7 and 30 GeV. The data contained an excess of planar events relative to its two-jet fragmentation model. A rest-frame analysis of the broad side of each selected event supported a three-jet structure; comparisons with simulated quark–antiquark–gluon events supported gluon bremsstrahlung as an interpretation. The observed hadrons and event shapes are measured; assignment of the low-energy jet to a gluon and the bremsstrahlung interpretation use the stated fragmentation and QCD models. The analysis does not uniquely exclude every alternative model; the authors note that arbitrary non-Gaussian fragmentation tails were not tested. Their alpha_s=0.17±0.04 estimate is model-dependent and the stated uncertainty is statistical only. Additional event-selection and detector details are in a separate source. This 1980 JADE result is distinct from contemporaneous TASSO, MARK J and PLUTO studies and is not a sole-priority claim.",
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        "title": "Observation of planar three-jet events in e+e− annihilation and evidence for gluon bremsstrahlung",
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