Production and decay of charmed mesons at the Z resonance

6533b856fe1ef96bd12b1c1e

RESEARCH PRODUCT

Production and decay of charmed mesons at the Z resonance

D. Decamp B. Deschizeaux C. Goy J.-p. Lees M.-n. Minard R. Alemany J.m. Crespo M. Delfino E. Fernandez V. Gaitan Ll. Garrido Ll.m. Mir A. Pacheco M.g. Catanesi D. Creanza M. De Palma A. Farilla G. Iaselli G. Maggi M. Maggi S. Natali S. Nuzzo M. Quattromini A. Ranieri G. Raso F. Romano F. Ruggieri G. Selvaggi L. Silvestris P. Tempesta G. Zito Y. Gao H. Hu D. Huang X. Huang J. Lin J. Lou C. Qiao T. Ruan T. Wang Y. Xie D. Xu R. Xu J. Zhang W. Zhao W.b. Atwood L.a.t. Bauerdick F. Bird E. Blucher G. Bonvicini F. Bossi J. Boudreau D. Brown T.h. Burnett H. Drevermann R.w. Forty C. Grab R. Hagelberg S. Haywood J. Hilgart B. Jost M. Kasemann J. Knobloch A. Lacourt E. Lançon I. Lehraus T. Lohse A. Lusiani A. Marchioro M. Martinez P. Mato S. Menary A. Minten A. Miotto R. Miquel H.-g. Moser J. Nash P. Palazzi F. Ranjard G. Redlinger A. Roth J. Rothberg H. Rotscheidt M. Saich R. St.denis D. Schlatter M. Takashima M. Talby W. Tejessy H. Wachsmuth S. Wasserbaech S. Wheeler W. Wiedenmann W. Witzeling J. Wotschack Z. Ajaltouni M. Bardadin-otwinowska R. El Fellous A. Falvard P. Gay J. Harvey P. Henrard J. Jousset B. Michel J.-c. Montret D. Pallin P. Perret J. Proriol F. Prulhière G. Stimpfl J.d. Hansen J.r. Hansen P.h. Hansen R. Møllerud B.s. Nilsson I. Efthymiopoulos E. Simopoulou A. Vayaki J. Badier A. Blondel G. Bonneaud J. Bourotte F. Braems J.c. Brient G. Fouque A. Gamess R. Guirlet S. Orteu A. Rosowsky A. Rougé M. Rumpf R. Tanaka H. Videau D.j. Candlin E. Veitch L. Moneta G. Parrini M. Corden C. Georgiopoulos M. Ikeda J. Lannutti D. Levinthal M. Mermikides L. Sawyer A. Antonelli R. Baldini G. Bencivenni G. Bologna P. Campana G. Capon F. Cerutti V. Chiarella B. D'ettorre-piazzoli G. Felici P. Laurelli G. Mannocchi F. Murtas G.p. Murtas G. Nicoletti L. Passalacqua M. Pepe-altarelli P. Picchi P. Zografou B. Altoon O. Boyle A.w. Halley I. Ten Have J.l. Hearns J.g. Lynch W.t. Morton C. Raine J.m. Scarr K. Smith A.s. Thompson R.m. Turnbull B. Brandl O. Braun R. Geiges C. Geweniger P. Hanke V. Hepp E.e. Kluge Y. Maumary A. Putzer B. Rensch A. Stahl K. Tittel M. Wunsch A.t. Belk R. Beuselinck D.m. Binnie W. Cameron M. Cattaneo P.j. Dornan S. Dugeay A.m. Greene J.f. Hassard N.m. Lieske S.j. Patton D.g. Payne M.j. Phillips J.k. Sedgbeer G. Taylor I.r. Tomalin A.g. Wright P. Girtler D. Kuhn G. Rudolph C.k. Bowdery T.j. Brodbeck A.j. Finch F. Foster G. Hughes N.r. Keemer M. Nuttall A. Patel B.s. Rowlingson T. Sloan S.w. Snow E.p. Whelan T. Barczewski K. Kleinknecht J. Raab B. Renk S. Roehn H.-g. Sander M. Schmelling H. Schmidt F. Steeg S.m. Walther B. Wolf J.-p. Albanese J.-j. Aubert C. Benchouk V. Bernard A. Bonissent D. Courvoisier F. Etienne S. Papalexiou P. Payre B. Pietrzyk Z. Qian H. Becker W. Blum P. Cattaneo G. Cowan B. Dehning H. Dietl F. Dydak M. Fernandez-bosman T. Hansl-kozanecka A. Jahn W. Kozanecki E. Lange J. Lauber G. Lütjens G. Lutz W. Männer Y. Pan R. Richter J. Schröder A.s. Schwarz R. Settles U. Stierlin J. Thomas G. Wolf V. Bertin J. Boucrot O. Callot X. Chen A. Cordier M. Davier G. Ganis J.-f. Grivaz Ph. Heusse P. Janot D.w. Kim F. Le Diberder J. Lefrançois A.-m. Lutz J.-j. Veillet I. Videau Z. Zhang F. Zomer D. Abbaneo S.r. Amendolia G. Bagliesi G. Batignani L. Bosisio U. Bottigli C. Bradaschia M. Carpinelli M.a. Ciocci R. Dell'orso I. Ferrante F. Fidecaro L. Foà E. Focardi F. Forti C. Gatto A. Giassi M.a. Giorgi F. Ligabue E.b. Mannelli P.s. Marrocchesi A. Messineo F. Palla G. Sanguinetti J. Steinberger R. Tenchini G. Tonelli G. Triggiani C. Vannini A. Venturi P.g. Verdini J. Walsh J.m. Carter M.g. Green P.v. March T. Medcalf I.s. Quazi J.a. Strong R.m. Thomas L.r. West T. Wildish D.r. Botterill R.w. Clifft T.r. Edgecock M. Edwards S.m. Fisher T.j. Jones P.r. Norton D.p. Salmon J.c. Thompson B. Bloch-devaux P. Colas C. Klopfenstein E. Locci S. Loucatos E. Monnier P. Perez J.a. Perlas F. Perrier J. Rander J.-f. Renardy A. Roussarie J.-p. Schuller J. Schwindling B. Vallage J.g. Ashman C.n. Booth C. Buttar R. Carney S. Cartwright F. Combley M. Dinsdale M. Dogru F. Hatfield J. Martin D. Parker P. Reeves L.f. Thompson E. Barberio S. Brandt H. Burkhardt C. Grupen H. Meinhard L. Mirabito U. Schäfer H. Seywerd G. Apollinari G. Giannini B. Gobbo F. Liello F. Ragusa L. Rolandi U. Stiegler L. Bellantoni X. Chen D. Cinabro J.s. Conway D.f. Cowen Z. Feng D.p.s. Ferguson Y.s. Gao J. Grahl J.l. Harton J.e. Jacobsen R.c. Jared R.p. Johnson B.w. Leclaire Y.b. Pan J.r. Pater Y. Saadi V. Sharma Z.h. Shi Y.h. Tang A.m. Walsh J.a. Wear F.v. Weber M.h. Whitney Null Sau Lan Wu G. Zobernig

subject

Nuclear physics Physics Hadronic decay Nuclear and High Energy Physics Particle physics Meson Branching fraction Electron–positron annihilation Hadron Beam energy Particle Physics - Experiment Hadronization

description

Abstract In a sample of 190 000 hadronic Z decays, three signals of charm production are observed: two from the exclusive decays D ° → K − π + and D ∗+ → D °π + → K − π + π + and one in the transverse-momentum distribution of soft hadrons relative to the nearest jet. The features of these signals are in good agreement with expectations based on the standard model and previous measurements of the branching fractions. The number of D ∗± → K ± π ± π ± per hadronic decay of the Z is measured to be (5.11±0.34) × 10 −3 , and the branching ratio B(D 0 → K − π + ) is (3.62 ± 0.34 ± 0.44)%. Charm hadronization has been studied. The average fraction of the beam energy carried by the D ∗ meson is found to be 〈 X E 〉 c = 0.504 −0.017 +0.013 ±0.008, and implications of the measurements on the pseudoscalar-to-vector production ratio of charmed mesons are discussed.

year	journal	country	edition	language
1991-01-01

10.1016/0370-2693(91)90769-m http://hdl.handle.net/11365/35688