Measurement of the hadronic photon structure function F2 γ (x, Q2) in two-photon collisions at LEP

A. Heister,Stefan Schael,R. Barate,Renaud Brunelière,I. De Bonis,D. Décamp,Corinne B. Goy,Stephane Jézéquel,Jean Pierre Lees,Françoise F. Martin,E. Merle,Marie Noelle Minard,Bolek Pietrzyk,Benjamin Trocmé,S. Bravo,M. P. Casado,Mokhtar A. Chmeissani,José M. Crespo,Enrique Fernández, M. Fernandez-Bosman, Ll C. Garrido,Mauricio C. Martínez,Alberto J. Pacheco,Hugo S. Ruiz,Anna Colaleo,Donato Creanza,Nicola De Filippis,Mauro De Palma,Giuseppe Iaselli,Giorgio Pietro Maggi,Marcello Maggi,Salvatore Nuzzo,Antonio Ranieri,Giuseppe Raso,Federico Ruggierí,G. Selvaggi,Lucia Silvestris,Piergiulio Tempesta, Alessia Tricomi,Giuseppe Zito,Xiuping Huáng,Jim Lin,Qun Ouyang,Taijie Wang,Yi Xie,Rui Xu,Shengtian Xue,Jian Zhang,Lei Zhang,Wanyun Zhao,Duccio Abbaneo,Timothy L. Barklow,O. L. Büchmüller,Marco Cattaneo,Barbara Clerbaux,Hans Drevermann,Roger W. Forty,Markus J. Frank,Fabiola Gianotti,Jørgen Beck Hansen,Jeffrey A. Harvey,David E. Hutchcroft,Patrick Janot,Beat Jost,Marumi Kado,Pere Mató,A. Moutoussi,Florence Ranjard,Luigi Rolandi,Dieter Schlatter,Giacomo Sgüazzoni,Frederic Teubert,Andrea Valassi,Ioana Videau,Frédérique Badaud,S. Dessagne,A. Falvard,D. Fayolle,Pascal Gay,J. C. Jousset,B. Michel,Stéphane Monteil,Dominique Pallin,J. M. Pascólo,Pascal Perret,Jakob Dines Hansen,John Renner Hansen,Philip H. Hansen,A. C. Kraan,Björn S. Nilsson, A. Kyriakis,Christos T. Markou,E. Simopoulou,A. Vayaki,K. Zachariadou,Alain P. Blondel,Jean Claude Brient,Frédéric MacHefert,André Rougé,Henri Videau,V. Ciülli,Ettore Focardi,Giuliano Parrini,Angelo Antonelli,Mario Antonelli,Giorgio Bencivenni,Fabio C. Bossi,G. Capon,Francesco Cerutti,Vitaliano Chiarella, P. Laurelli,G. P. Mannocchi,G. P. Murtas,L. Passalacqua,John F. Kennedy,James G R Lynch,Peter J. Negus,Val O'Shea,A. Stan Thompson,Steven R. Wasserbaech,Richard Cavanaugh,S. Dhamotharan,Chr C. Geweniger,Paul A. Hanke,Volker Hepp,E. E. Kluge,Alois Putzer, H. Stenzel,K. Tittel,Martin Wunsch,R. Beuselinck,W. Cameron,Gavin J. Davies,PJ J. Dornan,Maria Girone,Robert D. Hill,Nancy Marinelli,Jeremy Nowell,S. A. Rutherford,J. K. Sedgbeer,James C. Thompson,Rachel F. White,V. M. Ghete,P. Girtler,Emmerich Kneringer, D. Kuhn,Gerald Rudolph,Eva V. Bouhova- Thacker,Chris K. Bowdery,D. P. Clarke,Geoffrey F R Ellis,AJ J. Finch,F. Foster,G. D. Hughes,Roger W L Jones,M. R. Pearson,N. A. Robertson,Maria Smižanská,Olivier Van Der Aa,C. Delaere,G. Leibenguth,Vincent Lemaître,Ulla Blumenschein,F. Hölldorfer,Karl Heinz Jakobs,F. Kayser,Konrad Kleinknècht,Anke Susanne Müller,Burkhard Renk,Heinz Georg Sander,S. Schmeling,H. W. Wachsmuth,Ch Zeitnitz,Th Ziegler,Alain Bonissent,Paschal A. Coyle,Christian Curtil,Anne Ealet,Dominique Fouchez,Patrice Payre,André Tìlquin,Francesco Ragusa,A. David,Hans Dietl,Gerardo Ganis,Kay Hüttmann,G. Lütjens,W. E. Männer,Hans Günther Moser,Ronald Dean Settles,M. Villegas,Günter K. Wolf,J. Boucrot,Olivier H. Callot,Michel Davier, L. Duflot,Jean François Grivaz,Ph Heusse,Agnieszka Jachołkowska, L. Serin,J. J. Veillet,Paolo Azzürri,Giuseppe Bagliesi,Tommaso Boccali,Lorenzo Foà,Andrea Giammanco, A. Giassi,F. Ligabue,Alberto Messineo,Fabrizio Palla,Giulio Sanguinetti,Andrea Sciabà,Paolo Spagnolo,Roberto Tenchini,Andrea Venturi,Piero Giorgio Verdini,O. A. Awunor,Grahame A. Blair,Glen A. Cowan,Arán García-Bellido,Martin G. Green,Lee T. Jones,T. Medcalf,Andrzej Stanislaw Misiejuk,John A. Strong,P. Teixeira-Dias, R. W. Clifft,T. R. Edgecock,PR R. Norton,I. R. Tomalin,John J. Ward,Brigitte Bloch-Devaux,Djamel Eddine Boumediène,Paul Colas,B. Fabbro,Eric Lançon,M. C. Lemaire, E. Locci,Patrice Rodríguez Pérez, J. Rander,Boris Tuchming,Bertrand Vallage,Alan M. Litke,Gary N. Taylor,C. N. Booth,Susan L. Cartwright,F. H. Combley,P. N. Hodgson,Mark H. Lehto,Lee F. Thompson,Armin Böhrer,Siegmund Brandt,Claus Grupen,James S. Heß,An Bang Ngac,G. Prange,C. Borean,Gianrossano R. Giannini,Hongjian He,J. Putz,Joe E. Rothberg,S. R. Armstrong,Karl Berkelman,Kyle S. Cranmer,D. P S Ferguson,Yongsheng Gao,Sergio González,OJ J. Hayes,Hongbo Hu,Shi Jin,Jennifer E. Kile,PA A. McNamara,Jason Nielsen,Yi Pan,J. H. Von Wimmersperg-Toeller,Werner Wiedenmann,Joz Wu,Saulan Wu,Xin Wu,Georg Zobernig,Günther Dissertori

EUROPEAN PHYSICAL JOURNAL C（2003）

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摘要

The hadronic photon structure function F-2(gamma)(x,Q(2)) is measured from data taken with the ALEPH detector at LEP. At centre-of-mass energies between roots=189 GeV and 207 GeV an integrated luminosity of 548.4 pb(-1) is analyzed in two ranges of Q(2) with [Q(2)] =17.3 GeV2 and 67.2 GeV2. Detector effects and acceptance are corrected for with a Tikhonov unfolding procedure. The results are compared to theoretical predictions and measurements from other experiments.

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关键词

structure function,bibliography,differential cross section,particle physics,parametrization,photon structure function,centre of mass

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