Measurement of the D∗± cross section in two photon collisions at LEP

6533b856fe1ef96bd12b3265

RESEARCH PRODUCT

Measurement of the D∗± cross section in two photon collisions at LEP

D. Buskulic D. Casper I. De Bonis D. Decamp P. Ghez C. Goy J.-p. Lees M.-n. Minard P. Odier B. Pietrzyk F. Ariztizabal M. Chmeissani J.m. Crespo I. Efthymiopoulos E. Fernandez M. Fernandez-bosman V. Gaitan Ll. Garrido M. Martinez S. Orteu A. Pacheco C. Padilla F. Palla A. Pascual J.a. Perlas F. Sanchez F. Teubert D. Creanza M. De Palma A. Farilla G. Iaselli G. Maggi N. Marinelli S. Natali S. Nuzzo A. Ranieri G. Raso F. Romano F. Ruggieri G. Selvaggi L. Silvestris P. Tempesta G. Zito X. Huang J. Lin Q. Ouyang T. Wang Y. Xie R. Xu S. Xue J. Zhang L. Zhang W. Zhao G. Bonvicini M. Cattaneo P. Comas P. Coyle H. Drevermann A. Engelhardt R.w. Forty M. Frank M. Girone R. Hagelberg J. Harvey R. Jacobsen P. Janot B. Jost J. Knobloch I. Lehraus M. Maggi C. Markou E.b. Martin P. Mato H. Meinhard A. Minten R. Miquel T. Oest P. Palazzi J.r. Pater P. Perrodo J.-f. Pusztaszeri F. Ranjard P. Rensing L. Rolandi D. Schlatter M. Schmelling O. Schneider W. Tejessy I.r. Tomalin A. Venturi H. Wachsmuth W. Wiedenmann T. Wildish W. Witzeling J. Wotschack Z. Ajaltouni M. Bardadin-otwinowska A. Barres C. Boyer A. Falvard P. Gay C. Guicheney P. Henrard J. Jousset B. Michel S. Monteil J-c. Montret D. Pallin P. Perret F. Podlyski J. Proriol J.-m. Rossignol F. Saadi T. Fearnley J.b. Hansen J.d. Hansen J.r. Hansen P.h. Hansen B.s. Nilsson A. Kyriakis E. Simopoulou I. Siotis A. Vayaki K. Zachariadou A. Blondel G. Bonneaud J.c. Brient P. Bourdon L. Passalacqua A. Rougé M. Rumpf R. Tanaka A. Valassi M. Verderi H. Videau D.j. Candlin M.i. Parsons E. Focardi G. Parrini M. Corden M. Delfino C. Georgiopoulos D.e. Jaffe A. Antonelli G. Bencivenni G. Bologna F. Bossi P. Campana G. Capon F. Cerutti V. Chiarella G. Felici P. Laurelli G. Mannocchi F. Murtas G.p. Murtas M. Pepe-altarelli S.j. Dorris A.w. Halley I. Ten Have I.g. Knowles J.g. Lynch W.t. Morton V. O'shea C. Raine P. Reeves J.m. Scarr K. Smith M.g. Smith A.s. Thompson F. Thomson S. Thorn R.m. Turnbull U. Becker O. Braun C. Geweniger G. Graefe P. Hanke V. Hepp E.e. Kluge A. Putzer B. Rensch M. Schmidt J. Sommer H. Stenzel K. Tittel S. Werner M. Wunsch R. Beuselinck D.m. Binnie W. Cameron D.j. Colling P.j. Dornan N. Konstantinidis L. Moneta A. Moutoussi J. Nash G. San Martin J.k. Sedgbeer A.m. Stacey G. Dissertori P. Girtler E. Kneringer D. Kuhn G. Rudolph C.k. Bowdery T.j. Brodbeck P. Colrain G. Crawford A.j. Finch F. Foster G. Hughes T. Sloan E.p. Whelan M.i. Williams A. Galla A.m. Greene K. Kleinknecht G. Quast J. Raab B. Renk H.-g. Sander R. Wanke C. Zeitnitz J.j. Aubert A.m. Bencheikh C. Benchouk A. Bonissent G. Bujosa D. Calvet J. Carr C. Diaconu F. Etienne M. Thulasidas D. Nicod P. Payre D. Rousseau M. Talby I. Abt R. Assmann C. Bauer W. Blum D. Brown H. Dietl F. Dydak C. Gotzhein K. Jakobs H. Kroha G. Lütjens G. Lutz W. Männer H.-g. Moser R. Richter A. Rosado-schlosser R. Settles H. Seywerd U. Stierlin R.st. Denis G. Wolf R. Alemany J. Boucrot O. Callot A. Cordier F. Courault M. Davier L. Duflot J.-f. Grivaz Ph. Heusse M. Jacquet D.w. Kim F. Le Diberder J. Lefrançois A.-m. Lutz G. Musolino I. Nikolic H.j. Park I.c. Park M.-h. Schune S. Simion J.-j. Veillet I. Videau D. Abbaneo P. Azzurri G. Bagliesi G. Batignani S. Bettarini C. Bozzi G. Calderini M. Carpinelli M.a. Ciocci V. Ciulli R. Dell'orso R. Fantechi I. Ferrante L. Foà F. Forti A. Giassi M.a. Giorgi A. Gregorio F. Ligabue A. Lusiani P.s. Marrocchesi A. Messineo G. Rizzo G. Sanguinetti A. Sciabà P. Spagnolo J. Steinberger R. Tenchini G. Tonelli G. Triggiani C. Vannini P.g. Verdini J. Walsh A.p. Betteridge G.a. Blair L.m. Bryant Y. Gao M.g. Green D.l. Johnson T. Medcalf Ll.m. Mir J.a. Strong V. Bertin D.r. Botterill R.w. Clifft T.r. Edgecock S. Haywood M. Edwards P. Maley P.r. Norton J.c. Thompson B. Bloch-devaux P. Colas H. Duarte S. Emery W. Kozanecki E. Lançon M.c. Lemaire E. Locci B. Marx P. Perez J. Rander J.-f. Renardy A. Rosowsky A. Roussarie J.-p. Schuller J. Schwindling D. Si Mohand A. Trabelsi B. Vallage R.p. Johnson H.y. Kim A.m. Litke M.a. Mcneil G. Taylor A. Beddall C.n. Booth R. Boswell S. Cartwright F. Combley I. Dawson A. Koksal M. Letho W.m. Newton C. Rankin L.f. Thompson A. Böhrer S. Brandt G. Cowan E. Feigl C. Grupen G. Lutters J. Minguet-rodriguez F. Rivera P. Saraiva L. Smolik F. Stephan L. Bosisio R. Della Marina G. Ganis G. Giannini B. Gobbo L. Pitis F. Ragusa J. Rothberg S. Wasserbaech S.r. Armstrong L. Bellantoni P. Elmer Z. Feng D.p.s. Ferguson Y.s. Gao S. González J. Grahl J.l. Harton O.j. Hayes H. Hu P.a. Mcnamara J.m. Nachtman W. Orejudos Y.b. Pan Y. Saadi M. Schmitt I.j. Scott V. Sharma J.d. Turk A.m. Walsh F.v. Weber Sau Lan Wu X. Wu J.m. Yamartino M. Zheng G. Zobernig

subject

Quark Quantum chromodynamics Physics Nuclear and High Energy Physics Photon Luminosity (scattering theory)Meson [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]010308 nuclear & particles physics Physics 01 natural sciences Gluon Nuclear physics ALEPH Experiment 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment Born approximation 010306 general physics ALEPH experiment Particle Physics - Experiment

description

Abstract The inclusive production of D ∗± mesons in photon-photon collisions has been measured by the Aleph experiment at LEP with a beam energy of 45 GeV. The D ∗+ are detected in their decay to D 0 π + with the D 0 observed in three separate decay modes: (1) K − π + , (2) K − π + π 0 and (3) K − π + π − π + , and analagously for the D ∗− modes. A total of 33 events was observed from an integrated luminosity of 73 pb −1 which corresponds to a cross section for Σ( e + e − → e + e − D ∗± X ) of 155 ± 33 ± 21 pb. This result is compatible with both the direct production γγ → c c in the Born approximation and with a more complete calculation which includes both radiative QCD corrections and contributions in which one of the photons is first resolved into its quark and gluon constituents. The shapes of distributions for events containing a D ∗+ are found to be better described by the latter.

year	journal	country	edition	language
1995-01-01

10.1016/0370-2693(95)00758-d https://hdl.handle.net/11368/2563369