Measurement of the $${B} _{c} ^+$$ B c + meson lifetime using $${B} _{c} ^+ \rightarrow {{J} /\psi } \mu ^+ \upnu _\mu X$$ B c + → J / ψ μ + ν μ X decays

Autor: Riccardo Cenci, Michael Joseph Morello, Patrick Koppenburg, ERHAN PESEN, Sheldon Stone, Dmitry Golubkov, Andrea Contu, Samuel Coquereau, Sergii Kandybei, Eluned Smith, Marina Artuso, Cédric Potterat, Maurizio Martinelli, Stephan Eisenhardt, Olaf Steinkamp, Neus Lopez March, Orlandea Marius Ciprian, Lluís Garrido Beltran, Roger Barlow, Ivan Belyaev, Antonio Romero Vidal, Giovanni Passaleva, Fergus Wilson, Victor Egorychev, Artur Ukleja, Yanxi Zhang, Angelo Di Canto, Mariusz Witek, Kazuyoshi Carvalho Akiba, Valentin Niess, Dermot Moran, Clara Matteuzzi, Alessandro Pistone, Alessio Gianelle, Alexandru Tudor Grecu, Patrick Haworth Owen, Olivier Leroy, Gabriele Simi, Heinrich Schindler, Francesca Dordei, Marcello Rotondo, Sergey Filippov, Johannes Albrecht, Olivier Schneider, Jeroen Van Tilburg, Emanuele Santovetti, Pavel Krokovny, Michael Alexander, Paula Alvarez Cartelle, Christopher John Parkinson, Leo Wiggers, Irina Nasteva, Marco Cattaneo, Simone Stracka, Evgeny Gushchin, Giovanni Carboni, Diego Martinez Santos, Stefano De Capua, David Dossett, Zhenwei Yang, Cristina Lazzeroni, Pablo Vázquez Regueiro, Philip Ilten, Nicola Serra, Diego Tonelli, Andrei Tsaregorodtsev, Jaroslaw Wiechczynski, Nigel Watson, Evelina Gersabeck, Victor Coco, Vincenzo Maria Vagnoni, Massimiliano Fiorini, Anton Poluektov, Mitesh Patel, Christoph Frei, Wojciech Wislicki, Marcos Seco, Alessio Sarti, Flavio Archilli, Sam Cunliffe, Giovanni Punzi, Illya Shapoval, Francesco Dettori, Ricardo Graciani Diaz, Gianluigi Ezio Pessina, Giovanni Busetto, Abraham Antonio Gallas Torreira, Celestina Satriano, Paolo Gandini, Justine Serrano, Michele Veltri, Marek Idzik, Adalberto Sciubba, David Hutchcroft, Paul Seyfert, Bogdan Popovici, Frédéric Blanc, Renaud Le Gac, Andrew McNab, Fabrizio Ruffini, Jeremy Dalseno, Régis Lefèvre, Alexey Dzyuba, Eduardo Rodrigues, GIULIA MANCA, Rosen Matev, Matthew Needham, Alexander Bondar, Franco Bedeschi, Domenico Galli, Alessandro Cardini, Thomas Latham, Claudia Patrignani, Eric Cogneras, Tara Shears, Nicholas Brook, Mark Williams, Lucio Anderlini, Ricardo Vazquez Gomez, Miriam Calvo Gomez, Albert Comerma, Conor Fitzpatrick, Xabier Cid Vidal, Mathieu Perrin-Terrin, Tomasz Szumlak, Themistocles Bowcock, Roberto Stroili, Gerhard Raven, Mirco Dorigo, Stéphane T'Jampens, Ulrik Egede, Michael Schmelling, Oliver Lupton, Johannes Van den Brand, Antonio Augusto Alves Junior, Pieter David, Adriano Lai, Fernando Rodrigues, Manuel Tobias Schiller, Giampiero Mancinelli, Albert Puig Navarro, Lars Eklund, Jacco De Vries, Paul Soler, Cibrán Santamarina Ríos, Leandro De Paula, Eugeni Graugés, George Lafferty, Máximo Pló Casasús, Gloria Corti, Josue Danilo Molina Rodriguez, Matteo Manzali, Konstantin Belous, Michel De Cian, Roberta Cardinale, Chris Parkes, Gerco Onderwater, Barbara Storaci, Alessandro Petrolini, Daniel Souza Covacich, Concezio Bozzi, Olivier Deschamps, Eleonora Luppi, Simone Bifani, Pietro Marino, Barbara Sciascia, Roberto Calabrese, Tadeusz Lesiak, Suzanne Klaver, Valery Pugatch, Daniel Craik, Arantza Oyanguren, Vincent Tisserand, Claire Prouve, Stefano Perazzini, Juan José Saborido Silva, Agnieszka Dziurda, Vladimir Gligorov
Rok vydání: 2014
Předmět:
Zdroj: The European Physical Journal C. 74
ISSN: 1434-6052
1434-6044
DOI: 10.1140/epjc/s10052-014-2839-x
Popis: The lifetime of the $B_c^+$ meson is measured using semileptonic decays having a $J\!/\!\psi$ meson and a muon in the final state. The data, corresponding to an integrated luminosity of $2\mathrm{~fb^{-1}}$, are collected by the LHCb detector in $pp$ collisions at a centre-of-mass energy of $8\,\mathrm{TeV}$. The measured lifetime is $$\tau = 509 \pm 8 \pm 12 \mathrm{~fs},$$ where the first uncertainty is statistical and the second is systematic.
Databáze: OpenAIRE
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