Studies of QCD at $e^{+}e^{-}$ centre-of-mass energies between 91 and 209 GeV

6533b82ffe1ef96bd1295df6

RESEARCH PRODUCT

Studies of QCD at $e^{+}e^{-}$ centre-of-mass energies between 91 and 209 GeV

A. Heister S. Schael R. Barate R. Bruneliere I. De Bonis D. Decamp C. Goy S. Jezequel J.p. Lees F. Martin E. Merle M.n. Minard B. Pietrzyk B. Trocme S. Bravo M.p. Casado M. Chmeissani J.m. Crespo E. Fernandez M. Fernandez-bosman Ll. Garrido M. Martinez A. Pacheco H. Ruiz A. Colaleo D. Creanza N. De Filippis M. De Palma G. Iaselli G. Maggi M. Maggi S. Nuzzo A. Ranieri G. Raso F. Ruggieri G. Selvaggi L. Silvestris P. Tempesta A. Tricomi G. Zito X. Huang Jiali Lin Q. Ouyang T. Wang Y. Xie R. Xu S. Xue J. Zhang L. Zhang W. Zhao D. Abbaneo T. Barklow O. Buchmuller M. Cattaneo B. Clerbaux H. Drevermann R.w. Forty M. Frank F. Gianotti J.b. Hansen J. Harvey D.e. Hutchcroft P. Janot B. Jost M. Kado P. Mato A. Moutoussi F. Ranjard L. Rolandi D. Schlatter G. Sguazzoni W. Tejessy F. Teubert A. Valassi I. Videau F. Badaud S. Dessagne Alain Falvard D. Fayolle Pascal Gay J. Jousset B. Michel S. Monteil D. Pallin J M. Pascolo Pascal Perret J.d. Hansen J.r. Hansen P.h. Hansen A.c. Kraan B.s. Nilsson A. Kyriakis C. Markou E. Simopoulou A. Vayaki K. Zachariadou A. Blondel J-c. Brient F. Machefert A. Rouge M. Swynghedauw R. Tanaka H. Videau V. Ciulli E. Focardi G. Parrini A. Antonelli M. Antonelli G. Bencivenni F. Bossi G. Capon F. Cerutti V. Chiarella P. Laurelli G. Mannocchi G.p. Murtas L. Passalacqua J. Kennedy J.g. Lynch P. Negus V. O'shea A.s. Thompson S. Wasserbaech R. Cavanaugh S. Dhamotharan C. Geweniger P. Hanke V. Hepp E.e. Kluge A. Putzer H. Stenzel K. Tittel M. Wunsch R. Beuselinck W. Cameron G. Davies P.j. Dornan M. Girone R.d. Hill N. Marinelli J. Nowell S.a. Rutherford J.k. Sedgbeer J.c. Thompson R. White V.m. Ghete P. Girtler E. Kneringer D. Kuhn G. Rudolph E. Bouhova-thacker C.k. Bowdery D.p. Clarke G. Ellis A.j. Finch F. Foster G. Hughes R.w.l. Jones M.r. Pearson N.a. Robertson M. Smizanska O. Van Der Aa C. Delaere G. Leibenguth V. Lemaitre U. Blumenschein F. Holldorfer K. Jakobs F. Kayser K. Kleinknecht A.s. Muller B. Renk H.g. Sander S. Schmeling H. Wachsmuth C. Zeitnitz T. Ziegler A. Bonissent P. Coyle C. Curtil A. Ealet D. Fouchez P. Payre A. Tilquin F. Ragusa A. David H. Dietl G. Ganis K. Huttmann G. Lutjens W. Manner H.g. Moser R. Settles M. Villegas G. Wolf J. Boucrot O. Callot M. Davier L. Duflot J-f. Grivaz Ph. Heusse A. Jacholkowska L. Serin J-j. Veillet P. Azzurri G. Bagliesi T. Boccali L. Foa A. Giammanco A. Giassi F. Ligabue A. Messineo F. Palla G. Sanguinetti A. Sciaba P. Spagnolo R. Tenchini A. Venturi P.g. Verdini O. Awunor G.a. Blair G. Cowan A. Garcia-bellido M.g. Green L.t. Jones T. Medcalf A. Misiejuk J.a. Strong P. Teixeira-dias R.w. Clifft T.r. Edgecock P.r. Norton I.r. Tomalin J.j. Ward B. Bloch-devaux D. Boumediene P. Colas B. Fabbro E. Lancon M-c. Lemaire E. Locci P. Perez J. Rander B. Tuchming B. Vallage N. Konstantinidis A.m. Litke G. Taylor C.n. Booth S. Cartwright F. Combley P.n. Hodgson M. Lehto L.f. Thompson A. Bohrer S. Brandt C. Grupen J. Hess A. Ngac G. Prange C. Borean G. Giannini H. He J. Putz J. Rothberg S.r. Armstrong K. Berkelman K. Cranmer D.p.s. Ferguson Y. Gao S. Gonzalez O.j. Hayes H. Hu S. Jin J. Kile P.a. Mcnamara Iii J. Nielsen Y.b. Pan J.h. Von Wimmersperg-toeller W. Wiedenmann J. Wu Sau. Lan Wu X. Wu G. Zobernig G. Dissertori

subject

Quantum chromodynamics Physics Particle physics Annihilation Physics and Astronomy (miscellaneous)010308 nuclear & particles physics Electron–positron annihilation Hadron High Energy Physics::Phenomenology 01 natural sciences Power law Spectral line Charged particle Nuclear physics jets fragmentation fragmentation functions 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment Multiplicity (chemistry)010306 general physics Engineering (miscellaneous)Particle Physics - Experiment

description

The hadronic final states observed with the ALEPH detector at LEP in e(+)e(-) annihilation are analysed using 730 pb(-1) of data collected between 91 and 209 GeV in the framework of QCD. In particular event-shape variables and inclusive charged particle spectra are measured. The energy evolution of quantities derived from these measurements is compared to analytic QCD predictions. The mean charged particle multiplicity, the charged particle momentum spectrum and its peak position are compared to predictions of the modified-leading-logarithmic approximation. The strong coupling constant alpha(s) is determined from a fit of the QCD prediction to distributions of six event-shape variables at eight centre-of-mass energies. A study of non-perturbative power law corrections is presented.

year	journal	country	edition	language
2004-01-01

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