First measurement of the quark-to-photon fragmentation function

6533b82bfe1ef96bd128d949

RESEARCH PRODUCT

First measurement of the quark-to-photon fragmentation function

P. Payre I. Siotis Giuseppe Iaselli J. F. Pusztaszeri M. Chmeissani Sau Lan Wu P. Bourdon J. J. Veillet C. Vannini H. Duarte Paul Hanke C. N. Booth J. Jousset Michael Schmitt A. M. Lutz Jd Turk T. J. Sloan M. Letho J. M. Crespo M. G. Smith T. Fearnley C. Padilla I. Ferrante P. Colas F. Courault P. Mato G. Lutters B.s. Nilsson S. Xue T. Oest Z. Y. Feng M. I. Williams M. Edwards P. Rensing G. Triggiani B. Rensch Werner Wiedenmann A. Ranieri G. Bujosa R. Della Marina J. Grahl L. Passalacqua Lei Zhang A. Koksal G. Capon B. Renk J. M. Rossignol J. Boucrot A. M. Greene Gunter Quast Roberto Dell'orso Patrick Janot P.s. Marrocchesi A. Galla G. Bologna Yuehong Xie G. Musolino I. Ten Have Xin Wu A. Beddall Hyunjoo Park Val O'shea G. Sanguinetti M. Martinez Ramon Miquel A. S. Thompson P. Perrodo Giuseppe Bagliesi G.a. Blair I. Efthymiopoulos J. Minguet-rodriguez F. Rivera B. Bloch-devaux Alexander Finch André Rougé Y. S. Gao A. Minten P. R. Norton D. Decamp R. G. Jacobsen G. San Martin Maria Agnese Ciocci Gerardo Ganis R. Wanke M. Jacquet G. B. Taylor F. Etienne O.j. Hayes R. Settles Jordan Nash H. Videau Jean-claude Montret U. Stierlin P. Henrard Kevin M. Smith Guido Tonelli F. Stephan Robert Richter Giovanna Selvaggi O. Schneider P. Tempesta H. Wachsmuth W. Orejudos R. P. Johnson W. Blum A. Roussarie A. P. Betteridge S.r. Armstrong M. Wunsch Donato Creanza G. Crawford A. Blondel A. Blondel H. G. Moser Ll. M. Mir M. A. Mcneil John T Harvey L. Bosisio Alessandro Giassi A. Trabelsi B. Gobbo I. C. Park M. Pepe-altarelli Lorenzo Foà P. Maley Giuseppe Raso J. Schwindling R. Xu J. Steinberger Christian Zeitnitz L. Moneta G. Rudolph Paolo Azzurri David Rousseau Günther Dissertori M. N. Minard Giuseppe Zito D. M. Binnie Franco Ligabue S. Bettarini Salvatore Nuzzo G. Batignani Philippe Ghez Ettore Focardi John Rander E. Fernandez H. Meinhard Nancy Marinelli I. G. Knowles V. Gaitan John-bjarne Hansen Jane Nachtman P. Coyle W. T. Morton J. F. Renardy Jie Zhang B. Jost Alberto Messineo Daniel Johnson P. Colrain Elizabeth Locci G. Gelao Marcello Giorgi Giorgio Maggi F. Bossi A. Putzer J. P. Schuller Fabrizio Palla Roberto Tenchini I.j. Scott E. Feigl B. Vallage P. Perret A. Valassi G. Hughes E. B. Martin I. Nikolic F. Sanchez Hasko Stenzel Laurent Duflot Lester D.r. Thompson A. Lusiani Mossadek Talby G. Parrini D. Si Mohand Hubert Kroha F. Podlyski Marco Cattaneo A. Pascual J. A. Perlas S. Emery J. P. Lees Cristinel Diaconu D. Buskulic W. Zhao M. Verderi A. Vayaki R. Beuselinck H. Dietl M. Apollonio Peter Elmer Christian Bauer M. Delfino H. Seywerd C. Georgiopoulos J. M. Scarr J. D. Hansen J. C. Thompson J. J. Aubert J. Carr A. Böhrer F. Ranjard D. J. Candlin Emmerich Kneringer G. Lütjens I. Videau J. Sommer A. Moutoussi G. R. Bonneaud N. Konstantinidis Jorg Wotschack I. De Bonis J. J. Walsh R. Fantechi Mi Parsons S. L. Cartwright Yang Gao C. Guicheney A. Engelhardt Roger Forty L. Bellantoni E. P. Whelan J. Lefrançois Stefan Simion Dominique Pallin R. Hagelberg Aristotelis Kyriakis R. Alemany Jiali Lin R. Boswell P. Saraiva A. M. Stacey C. Gotzhein C. Boyer W. M. Newton W. Cameron J. Knobloch A. M. Walsh J. K. Sedgbeer Pablo Rodriguez Perez H.y. Kim D. Kuhn Y. Saadi Anna Colaleo Maria Girone F. Combley C. Bencheikh Joseph Rothberg T. Medcalf Philippe Odier G. Bonvicini R W Assmann F. Thomson F. Saadi P. Girtler G. Calderini F. Ragusa H. Drevermann G. Giannini Paolo Spagnolo C. Grupen A. M. Bencheikh M. Fernandez-bosman S. Orteu B. Marx M. C. Lemaire S. Gonzalez K. Tittel Konrad Kleinknecht V. Ciulli S. Natali P. A. Mcnamara D. Schlatter M. Rumpf H. Hu I. Abt F. Ariztizabal Ziad Ajaltouni L. Rolandi Y. B. Pan Jean-francois Grivaz David Colling M.g. Schmidt Joseph Proriol Duncan A. Brown Ph Heusse W. Tejessy F. Ruggieri D. Casper S. Schael B. Pietrzyk F. Teubert Peter Hansen F. Foster J.m. Yamartino Pierluigi Campana Arnaud Lucotte M. De Palma G. Felici G. Rizzo Ian R Tomalin D. E. Jaffe C. Markou A. Pacheco J. Raab P. J. Dornan W. Männer L. Smolik M. Zheng C. Goy F. Murtas V. Hepp Stephen Haywood A. Cordier Ian Dawson Ll. Garrido G. Graefe D.p.s. Ferguson Stephanie Brandt S. Wasserbaech C. Benchouk S. Werner T. J. Brodbeck K. Jakobs Fabio Cerutti T. Wildish Piero Giorgio Verdini F. Le Diberder B. Michel R. W. Clifft F. Forti Eric Lancon M. Bardadin-otwinowska J.g. Lynch P. Palazzi P. Comas R. M. Turnbull Lucia Silvestris U. Becker A. W. Halley J. C. Brient Gy. Wolf G. A. Cowan G. Mannocchi D. R. Botterill M. Thulasidas F. Romano A. Bonissent A. Bonissent Georg Zobernig G. Lutz M. G. Green M. Davier V. Bertin C. Raine S. Monteil J. L. Harton K. Zachariadou V. Chiarella D. Abbaneo M. Carpinelli Vivek Sharma A. Gregorio A. Rosado-schlosser Alan M. Litke Mario Maggi X. Huang Paolo Laurelli W. Kozanecki R. St. Denis André Rosowsky G. Bencivenni C. Geweniger A. Barres R. Tanaka F. Dydak F. Dydak E. E. Kluge C. K. Bowdery C. Rankin Ting Wang Alain Falvard S. J. Dorris O. Braun J.d. Hansen O. Callot Q. Ouyang J. A. Strong E. Simopoulou I. Lehraus T. R. Edgecock David Calvet H. G. Sander G.p. Murtas S. Thorn P. Reeves L. M. Bryant Markus Frank M. Schmelling M. Corden D. W. Kim D. Nicod A. Antonelli C. Bozzi W. Witzeling A. Sciabà Andrea Venturi Joleen Pater M. H. Schune A. Farilla

subject

Physics Quark Quantum chromodynamics Particle physics Photon Physics and Astronomy (miscellaneous)010308 nuclear & particles physics Physics Electron–positron annihilation High Energy Physics::Phenomenology Hadron 7. Clean energy 01 natural sciences Hadronization Nuclear physics 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment 010306 general physics ALEPH experiment Event (particle physics)Particle Physics - Experiment

description

Earlier measurements at LEP of isolated hard photons in hadronic Z decays, attributed to radiation from primary quark pairs, have been extended in the ALEPH experiment to include hard photon production inside hadron jets. Events are selected where all particles combine democratically to form hadron jets, one of which contains a photon with a fractional energy z greater than or equal to 0.7. After statistical subtraction of non-prompt photons, the quark-to-photon fragmentation function, D(z), is extracted directly from the measured 2-jet rate. By taking into account the perturbative contributions to D(z) obtained from an O(alpha alpha(s)) QCD calculation, the unknown non-perturbative component of D(z) is then determined at high z. Provided due account is taken of hadronization effects near z = 1, a good description of the other event topologies is then found. RI ANTONELLI, ANTONELLA/C-6238-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Sanchez, Federico/F-5809-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012

year	journal	country	edition	language
1996-01-01

10.1007/bf02907417 http://hdl.handle.net/11365/38181