Measurement of J / ψ production in pp collisions at √ s = 7 TeV

  title={Measurement of J / ψ production in pp collisions at √ s = 7 TeV},
  author={R. Aaij and Bernardo Adeva and Matteo Adinolfi and C. Adrover and A. A. Affolder and Ziad J. Ajaltouni and Joachim Albrecht and Federico Alessio and Molassiotis Alexander and P. Alvarez Cartelle and Al{\'i}rio Alex Rosa Alves and S. Amato and Yasmine Sara Amhis and Jan Amoraal and Joseph D. Anderson and Robert B. Appleby and Orlando A. Gutierrez and Luisa Arrabito and Marina Artuso and E. Aslanides and Giulio Auriemma and Silke Bachmann and Donald S. Bailey and V. Balagura and Wander Baldini and Rebecca Jo Barlow and Colin Barschel and Sergey Barsuk and Alex B Bates and C. I. Bauer and Th. Bauer and Alexander Bay and Ignacio Bediaga and K. S. Belous and I. K. Belyaev and Eli Ben-Haim and Maurice Benayoun and Giovanni Bencivenni and Roland Erwin Bernet and M.-O. Bettler and Martin van Beuzekom and Simone Bifani and Andrea Bizzeti and P. M. Bj{\o}rnstad and Thomas Blake and François-Xavier Blanc and Carolyn Blanks and Johan Blouw and Steven R Blusk and Alexey Bobrov and Valerio Bocci and Alexander A Bondar and Natalya Bondar and Walter Marcello Bonivento and Silvana Borghi and Andrea Borgia and Edwin Bos and T. Bowcock and C. Bozzi and T. Brambach and J. D. Brand and Jm Bressieux and Sean Brisbane and Markward Britsch and Tom Britton and Nicola Brook and H. Benjamin Brown and A. B{\"u}chler-Germann and Aleksander Bursche and Jan A.N. Buytaert and Sandro Cadeddu and Juan Manuel Caicedo Carvajal and Olivier Callot and Marta Calvi and M{\'i}riam Calvo G{\'o}mez and A. Camboni and Pierluigi Campana and Angelo Carbone and Gianluca Carboni and Rossella Cardinale and Alessandro Cardini and Laura Carson and Kazuyoshi Carvalho Akiba and Guillaume Casse and Marco Cattaneo and Messrs Charles and P. Charpentier and Nicola Chiapolini and F. Martinez Vidal and Peter J. Clark and P. E. L. Clarke and M. Clemencic and H. V. Cliff and Joel Closier and Carmen Coca and Valeria F. Del Coco and Jeff Cogan and Pat Collins and Filote Constantin and Gabriella Conti and Augusto Contu and Mike Coombes and Giacomo Corti and Greig A. Cowan and Rebecca Currie and B. D’Almagne and Conchita d’Ambrosio and W. Dias da Silva and PY. David and Ida de Bonis and Shlomo Capua and Michel De Cian and Flavio de Lorenzi and Jo{\~a}o Montenegro de Miranda and Luciano de Paula and Perandini Simone and David Scott Decamp and Hubert Degaudenzi and Marc Deissenroth and L. Del Buono and Carla Deplano and Olivier Deschamps and Francesco Dettori and Jerry Dickens and Henk Dijkstra and Mihai O. Dima and Pablo Diniz Batista and S. Domingo Donleavy and Dena Dossett and A. M. Dovbnya and Frederic Dupertuis and Rd. Dzhelyadin and Christopher Eames and Sajan Easo and Ulrik Egede and V. Egorychev and Simon Eidelman and Daan van Eijk and Florian Eisele and Sara H Eisenhardt and Lars Eklund and D. G. d’Enterria and D. Esperante Pereira and Lluis Esteve and Erica Fanchini and Ch. F{\"a}rber and Gemma Fardell and Christine Farinelli and Stephen Farry and Vincent Fave and Victor Fernandez Albor and Massimilioano Ferro-Luzzi and Sergei Filippov and Christopher Fitzpatrick and Filippo Fontanelli and Roger Forty and Markus Frank and Christoph Frei and Massimo Ferri Patrizio Frosini and Jes{\'u}s Pazos and S. Furcas and A. Gallas Torreira and Domenico Galli and Miriam Gandelman and Patricia Alejandra Gandini and Yongsheng Gao and J-C. Garnier and J. A. Garofoli and Ll. Garrido and Clara Gaspar and Nicolas Gauvin and Marco Gersabeck and Tim Gershon and Ph. Ghez and Valerie Gibson and Vladimir Vava Gligorov and Carla G{\"o}bel and D. V. Golubkov and Andrei Golutvin and Andrea C. Gomes and Hamish Gordon and Marc Grabalosa G{\'a}ndara and Ricardo Graciani Diaz and L. A. Granado Cardoso and Eugeni Grauges and G. Graziani and Alina Grecu and Stuart Gregson and B. Gui and E. Gushchin and Yu. P. Guz and Thierry Gys and Guido Haefeli and Surthrival Haines and Tom Hampson and Stephanie Hansmann-Menzemer and Rahim Harji and Neville Harnew and Tim J. Harrison and Junfeng He and Karol Hennessy and Pierre Henrard and J. A. Hernando Morata and Eric van Herwijnen and Awatef Hicheur and E Tish Hicks and Werner Hofmann and K. Holubyev and Plamen Hopchev and Wouter Hulsbergen and Paul N. Hunt and Tarjei Huse and R. S. Huston and D. Hutchcroft and Volodymyr Iakovenko and Cristina Escudero and Philip Ilten and J. Imong and Richard Jacobsson and Mohammed J. Hussein and Eveline Jans and F. J. A. Jansen and P. Jaton and Bernard Raboisso Pierre Jean-Marie and Feng Jing and M. Samuel John and David L. Johnson and Christopher R Jones and Beat Jost and F. Kapusta and Till Moritz Karbach and Joseph Keaveney and Ulrich Kerzel and Tjeerd J Ketel and Anna Keune and B. Khanji and Yang Mo Kim and Mathias Knecht and Stephan Koblitz and Anatoli Konoplyannikov and Patrick Koppenburg and A. Kozlinskiy and L. A. Kravchuk and G. Krocker and P. P. Krokovny and Florian Kruse and Karol Kruzelecki and marcin. kucharczyk and S. Kukulak and Rupali Kumar and T. Kvaratskheliya and V. N. La Thi and D. H. Lacarr{\`e}re and George Lafferty and Adriano Lai and Robert G. Lambert and Giordano Lanfranchi and Christina Langenbruch and Thomas Latham and Ray{\'e}n Gac and Jeroen van Leerdam and Jessica Lees and R{\'e}gis Lef{\`e}vre and A. K. Leflat and J. Lefrancois and Oliviez Leroy and Tadeusz Lesiak and Lu Yang Li and Yan Li and L. Li Gioi and Marit Lieng and M. A. Liles and Richard Lindner and Cuneifolium Linn and Ben Q. Liu and Guoming Liu and Jorge Lu{\'i}s Machado Lopes and E. Lopez Asamar and N. L{\'o}pez-March and J. Luisier and B. M’charek and F. Machefert and Irina Machikhiliyan and Florin Maciuc and O. E. Maev and J{\'e}r{\^o}me Magnin and Andreas Maier and Sachit Malde and Rashid Mohamad Mamunur and Giovanni Manca and Giulio Mancinelli and N. Mangiafave and Umberto Marconi and Robert M{\"a}rki and J{\"o}rg Marks and G. Martellotti and Australia Martin Martens and Laure Martin and Aridio M. Sanchez and Daniela Santos and A. Massafferri and Zsolt Mathe and Clara Matteuzzi and Mikhail Matveev and V G Matveev and Emmanuel Maurice and Barry Maynard and Anatoly Mazurov and Graham McGregor and Ronan McNulty and Chelsea Mclean and M. Meissner and Marcel Merk and J{\"o}rg Merkel and Miri S Merkin and Raneem Messi and Silvia Miglioranzi and Diego A. Milan{\'e}s and M.-N. Minard and S. Monteil and Dawn Moran and Piotr Morawski and Jenny V. Morris and Raymond Mountain and I. Mous and Franz Muheim and K.-H. M{\"u}ller and R. A. Muresan and F. Murtas and B. Muryn and Marco Musy and J. Mylroie-Smith and Pallavi Umesh Naik},
The production of J/ψ mesons in proton-proton collisions at √ s = 7TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/ψ production is measured as a function of the J/ψ transverse momentum pT and rapidity y in the fiducial region pT ∈ [0;14]GeV/c and y ∈ [2.0;4.5]. The differential cross-section and fraction of J/ψ from b-hadron decays are also measured in the same pT and y ranges. The analysis is based on a data sample corresponding to an integrated… CONTINUE READING
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