Improved search for $B_{s}^{0} - \overline{B}

6533b82afe1ef96bd128ba08

RESEARCH PRODUCT

Improved search for $B_{s}^{0} - \overline{B}_{s}^{0}$ oscillations

Roberto Tenchini Roberto Tenchini John-bjarne Hansen L. F. Thompson F. Combley B. Pietrzyk J. P. Lees Karl Jakobs R. Beuselinck P. Girtler Vitaliano Chiarella A. Ranieri John H. L. Hansen Duccio Abbaneo Elizabeth Locci W. Zhao W. Cameron G. R. Bonneaud M H. Lehto P. Colas G. Sanguinetti Ramon Miquel A. S. Thompson O. Callot F. Murtas Y. B. Pan P. R. Norton A. Böhrer G. Merino A. Rougé E. V. Bouhova-thacker F. Ruggieri G. Capon H. Videau G. Prange V. Hepp Ting Wang Paolo Azzurri M. Pepe-altarelli G. Boix G. Boix M. Verderi Gunter Quast Gunter Quast Ll. Garrido Ll. Garrido A. Trabelsi A. Trabelsi Paul Hanke J.j. Ward Donato Creanza John T Harvey G. Giannini K. Affholderbach K. Affholderbach I. Videau R. W. L. Jones C. N. Booth J. Jousset B. Vallage E. Fernandez Piero Giorgio Verdini B. Michel Roger Forty G.a. Blair Miriam Lucio Martinez Alessandro Giassi Xin Wu L. Zhang Giuseppe Raso G. Rudolph Ph Heusse F. Ranjard G. Mannocchi Emmerich Kneringer Y. S. Gao Y. S. Gao Werner Wiedenmann G. Maggi A. Vayaki Nancy Marinelli F. Teubert S. Schael J. Lefrançois A. Antonelli N. Konstantinidis Salvatore Nuzzo L. Passalacqua P. Henrard N. A. Robertson Giacomo Sguazzoni Maria Pilar Casado T.c. Greening T.c. Greening S. Gonzalez K. Tittel Konrad Kleinknecht Dominique Pallin Paolo Spagnolo Gy. Wolf M. Fernandez-bosman G. Hughes F. Foster A. Sciabà Gerardo Ganis Gerardo Ganis B.s. Nilsson S. Xue R. Xu Lucia Silvestris A. Bonissent P. Campana W. Tejessy C. J. Montret P. H. Hansen K. Hüttmann Franco Ligabue S. Brandt O.j. Hayes R. Settles Eric Lancon H. G. Moser Marumi Kado Marumi Kado L. Rolandi J. A. Strong E. Simopoulou G. B. Taylor P. Tempesta A. Pacheco G. A. Cowan Yuehong Xie Giuseppe Bagliesi Ian R Tomalin M.-n. Minard S. W. K. Emery M. C. Lemaire H. Hu P. A. Mcnamara O. Buchmüller O. Buchmüller Olivier Leroy P. Perret G. Dissertori H. Ruiz Tommaso Boccali S. Bravo Marco Cattaneo B. Bloch-devaux Francesco Ragusa David Hutchcroft Andrea Giammanco Richard Cavanaugh F. Cerutti J.p. Schuller R. W. Clifft D. Kuhn J. H. Von Wimmersperg-toeller M. De Palma A. Blondel S.r. Armstrong J.g. Lynch B. Renk Giovanna Selvaggi Pere Mato C. Markou O. Schneider O. Schneider M. Wunsch J. K. Sedgbeer P. J. Negus T. Medcalf F. Bossi Val O'shea A. W. Halley A. Moutoussi J. Nielsen Fabrizio Palla E. Grauǵes Z. Xie S. Jin A. Misiejuk P. Perez M. Rumpf G. Lütjens E. Merle A. Roussarie A. Ngac J. C. Brient A. Putzer C. Goy Aristotelis Kyriakis D. Decamp J. Rothberg S. Wasserbaech Qun Ouyang Hasko Stenzel K. Berkelman Giuseppe Zito Alessia Tricomi Ll. M. Mir D. M. Binnie Ettore Focardi John Rander J. Schwindling A. J. Finch R. Barate Anna Colaleo M.r. Pearson Maria Girone Maria Girone Christian Zeitnitz G. Parrini M. Chmeissani C. Yuan Sau Lan Wu J. M. Crespo I. De Bonis H. Dietl J. D. Hansen F. Badaud S. L. Cartwright Jiali Lin J.c. Thompson W. Männer H. Wachsmuth P. Payre A. Jacholkowska H. Drevermann Giuseppe Iaselli Claus Grupen D. Schlatter M. Swynghedauw Jf Renardy D.p.s. Ferguson Jie Zhang Jean-francois Grivaz Vitaliano Ciulli David Rousseau Mossadek Talby Junjie Wu P. J. Dornan A. David Andrea Venturi Andrea Venturi Pedro Teixeira-dias F. Gianotti J. Boucrot G. Bencivenni Barbara Clerbaux Patrick Janot C. K. Bowdery C. Geweniger U. Sieler E. E. Kluge Markus Frank Alain Falvard S. Dhamotharan P. Coyle Andrea Valassi Georg Zobernig M. G. Green M. Davier T. R. Edgecock H. G. Sander V. M. Ghete G.p. Murtas Lorenzo Foà B. Jost Alberto Messineo Laurent Duflot J. J. Veillet Kyle Cranmer Alan M. Litke Mario Maggi Massimo Antonelli C. Raine J. Kile S. Monteil K. Zachariadou Arno Heister X. Huang Paolo Laurelli W. Kozanecki

subject

Physics Aleph Particle physics Physics and Astronomy (miscellaneous)High Energy Physics::Phenomenology High Energy Physics::Experiment Engineering (miscellaneous)Particle Physics - Experiment

description

An improved search for Bs oscillations is performed in the ALEPH data sample collected during the first phase of LEP, and reprocessed in 1998. Three analyses based on complementary event selections are presented. First, decays of Bs mesons into hadronic flavour eigenstates are fully reconstructed. This selection yields a small sample of candidates with excellent decay length and momentum resolution and high average Bs purity. Semileptonic decays with a reconstructed Ds- meson provide a second sample with larger statistics, high average Bs purity, but a poorer momentum and decay length resolution due to the partial decay reconstruction. Finally, semileptonic b-hadron decays are inclusively selected and yield the data sample with the highest sensitivity to Bs oscillations, as the much higher statistics compensate for the low average Bs purity and poorer time resolution. A lower limit is set at 10.9 ps-1 at 95% CL, significantly lower than the expected limit of 15.7 ps-1.

year	journal	country	edition	language
2003-07-01	The European Physical Journal C

https://doi.org/10.1140/epjc/s2003-01230-5