Inclusive production of D*(+/-) mesons in photon-photon collisions at roots(ee) 183 and 189 GeV and a first measurement of F-2,c(gamma)

Authors
Abbiendi, G Ackerstaff, K Akesson, PF Alexander, G Allison, J Anderson, KJ Arcelli, S Asai, S Ashby, SF Axen, D Azuelos, G Bailey, I Ball, AH Barberio, E Barillari, T Barlow, RJ Batley, JR Baumann, S Behnke, T Bell, KW Bella, G Bellerive, A Bentvelsen, S Bethke, S Betts, S Biebel, O Biguzzi, A Bloodworth, IJ Bock, P Bohme, J Boeriu, O Bonacorsi, D Boutemeur, M Braibant, S Bright-Thomas, P Brigliadori, L Brown, RM Burckhart, HJ Capiluppi, P Carnegie, RK Carter, AA Carter, JR Chang, CY Charlton, DG Chrisman, D Ciocca, C Clarke, PEL Clay, E Cohen, I Conboy, JE Cooke, OC Couchman, J Couyoumtzelis, C Coxe, RL Cuffiani, M Dado, S Dallavalle, GM Dallison, S Davis, R de Roeck, A Dervan, P Desch, K Dienes, B Dixit, MS Donkers, M Dubbert, J Duchovni, E Duckeck, G Duerdoth, IP Estabrooks, PG Etzion, E Fabbri, F Fanfani, A Fanti, M Faust, A Feld, L Ferrari, P Fiedler, F Fierro, M Fleck, I Frey, A Furtjes, A Futyan, DI Gagnon, P Gary, JW Gaycken, G Geich-Gimbel, C Giacomelli, G Giacomelli, P Gingrich, DM Glenzinski, D Goldberg, J Gorn, W Grandi, C Graham, K Gross, E Grunhaus, J Gruwe, M Hajdu, C Hanson, GG Hansroul, M Hapke, M Harder, K Harel, A Hargrove, CK Harin-Dirac, M Hauschild, M Hawkes, CM Hawkings, R Hemingway, RJ Herten, G Heuer, RD Hildreth, MD Hill, JC Hobson, PR Hocker, A Hoffman, K Homer, RJ Honma, AK Horvath, D Hossain, KR Howard, R Huntemeyer, P Igo-Kemenes, P Imrie, DC Ishii, K Jacob, FR Jawahery, A Jeremie, H Jimack, M Jones, CR Jovanovic, P Junk, TR Kanaya, N Kanzaki, J Karapetian, G Karlen, D Kartvelishvili, V Kawagoe, K Kawamoto, T Kayal, PI Keeler, RK Kellogg, RG Kennedy, BW Kim, DH Klier, A Kobayashi, T Kobel, M Kokott, TP Kolrep, M Komamiya, S Kowalewski, RV Kress, T Krieger, P von Krogh, J Kuhl, T Kupper, M Kyberd, P Lafferty, GD Landsman, H Lanske, D Lauber, J Lawson, I Layter, JG Lellouch, D Letts, J Levinson, L Liebisch, R Lillich, J List, B Littlewood, C Lloyd, AW Lloyd, SL Loebinger, FK Long, GD Losty, MJ Lu, J Ludwig, J Macchiolo, A Macpherson, A Mader, W Mannelli, M Marcellini, S Marchant, TE Martin, AJ Martin, JP Martinez, G Mashimo, T Mattig, P McDonald, WJ McKenna, J Mckigney, EA McMahon, TJ McPherson, RA Meijers, F Mendez-Lorenzo, P Merritt, FS Mes, H Meyer, I Michelini, A Mihara, S Mikenberg, G Miller, DJ Mohr, W Montanari, A Mori, T Nagai, K Nakamura, I Neal, HA Nisius, R O'Neale, SW Oakham, FG Odorici, F Ogren, HO Okpara, A Oreglia, MJ Orito, S Pasztor, G Pater, JR Patrick, GN Patt, J Perez-Ochoa, R Petzold, S Pfeifenschneider, P Pilcher, JE Pinfold, J Plane, DE Poli, B Polok, J Przybycien, M Quadt, A Rembser, C Rick, H Robins, SA Rodning, N Roney, JM Rosati, S Roscoe, K Rossi, AM Rozen, Y Runge, K Runolfsson, O Rust, DR Sachs, K Saeki, T Sahr, O Sang, WM Sarkisyan, EKG Sbarra, C Schaile, AD Schaile, O Scharff-Hansen, P Schieck, J Schmitt, S Schoning, A Schroder, M Schumacher, M Schwick, C Scott, WG Seuster, R Shears, TG Shen, BC Shepherd-Themistocleous, CH Sherwood, P Siroli, GP Skuja, A Smith, AM Snow, GA Sobie, R Soldner-Rembold, S Spagnolo, S Sproston, M Stahl, A Stephens, K Stoll, K Strom, D Strohmer, R Surrow, B Talbot, SD Taras, P Tarem, S Teuscher, R Thiergen, M Thomas, J Thomson, MA Torrence, E Towers, S Trefzger, T Trigger, I Trocsanyi, Z Tsur, E Turner-Watson, MF Ueda, I VanKooten, R Vannerem, P Verzocchi, M Voss, H Wackerle, F Waller, D Ward, CP Ward, DR Watkins, PM Watson, AT Watson, NK Wells, PS Wengler, T Wermes, N Wetterling, D White, JS Wilson, GW Wilson, JA Wyatt, TR Yamashita, S Zacek, V Zer-Zion, D
Citation
G. Abbiendi et al., Inclusive production of D*(+/-) mesons in photon-photon collisions at roots(ee) 183 and 189 GeV and a first measurement of F-2,c(gamma), EUR PHY J C, 16(4), 2000, pp. 579-596
Citations number
64
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL C
ISSN journal
1434-6044 → ACNP
Volume
16
Issue
4
Year of publication
2000
Pages
579 - 596
Database
ISI
SICI code
1434-6044(200009)16:4<579:IPODMI>2.0.ZU;2-R
Abstract
The inclusive production of D*(+/-) mesons in photon-photon collisions has been measured using rile OPAL detector at LEP at e(+)e(-) centre-of-mass en ergies root S-ee of 183 and 189 GeV. The D*(+) mesons are reconstructed in their decay to D(0)pi(+) with the D-0 observed in the two decay modes K(-)p i(+) and K(-)pi(+)pi(-)pi(+) After background subtraction, 100.4 +/- 12.6 ( stat) D*(+/-) mesons have been selected in events without observed scattere d beam electron ("anti-tagged") and 29.8 +/- 5.9 (stat)D*(+/-) mesons in ev ents where one beam electron is scattered into the detector ("single-tagged "). Direct and single-resolved events are studied separately. Differential cross-sections d sigma/dp(T)(D*) and d sigma/d \eta(D*)\ as functions of th e D*+/- transverse momentum p(T)(D*) and pseudorapidity eta(D*) are present ed in the kinematic region 2 GeV < p(T)(D*) < 12 GeV and \eta(D*)\ < 1.5 Th ey are compared to next-to-leading order (NLO) perturbative QCD calculation s. The total cross-section for the process e(+)e(-) --> e(+)e(-) c (c) over bar where the charm quarks are produced in the collision of two quasi-real photons is measured to be sigma(e(+)e(-) --> e(+)e(-) c (c) over bar) = 96 3 +/- 110 (stat) +/- 86 (sys) +/- 224 (extrapolation) pb. A first measureme nt. of the charm structure function F-2.0(gamma), of the photon is performe d in the kinematic range 0.0014 < x < 0.87 and 5 GeV2 < Q(2) < 100 GeV2. an d the result is compared to a NLO perturbative QCD calculation.