Measurement of prompt J/psi and beauty hadron production cross sections at mid-rapidity in pp collisions at root s=7 TeV

Betty Abelev, Jaroslav Adam, Dagmar Adamova, Andrew Marshall Adare, Madan Aggarwal, Gianluca Aglieri Rinella, Andras Cabor Agocs, Andrea Agostinelli, Saul Aguilar Salazar, Zubayer Ahammed, Arshad Ahmad, Nazeer Ahmad, Sul-Ah Ahn, Sang Un Ahn, Alexander Akindinov, Dmitry Aleksandrov, Bruno Alessandro, Jose Ruben Alfaro Molina, Andrea Alici, Anton AlkinErick Jonathan Almaraz Avina, Johan Alme, Torsten Alt, Valerio Altini, Sedat Altinpinar, Igor Altsybeev, Cristian Andrei, Anton Andronic, Venelin Anguelov, Jonas Anielski, Christopher Daniel Anson, Tome Anticic, Federico Antinori, Pietro Antonioli, Laurent Bernard Aphecetche, Harald Appelshauser, Nicolas Arbor, Silvia Arcelli, Andreas Arend, Nestor Armesto, Roberta Arnaldi, Tomas Robert Aronsson, Ionut Cristian Arsene, Mesut Arslandok, Andzhey Asryan, Andre Augustinus, Ralf Peter Averbeck, Terry Awes, Juha Heikki Aysto, Mohd Danish Azmi, Matthias Jakob Bach, Angela Badala, Yong Wook Baek, Raphaelle Marie Bailhache, Renu Bala, Rinaldo Baldini Ferroli, Alberto Baldisseri, Alain Baldit, Fernando Baltasar Dos Santos Pedrosa, Jaroslav Ban, Rama Chandra Baral, Roberto Barbera, Francesco Barile, Gergely Gabor Barnafoldi, Lee Stuart Barnby, Valerie Barret, Jerzy Gustaw Bartke, Maurizio Basile, Nicole Bastid, Sumit Basu, Bastian Bathen, Guillaume Batigne, Boris Batyunya, Christoph Heinrich Baumann, Ian Gardner Bearden, Hans Beck, Nirbhay Kumar Behera, Iouri Belikov, Francesca Bellini, Rene Bellwied, Ernesto Belmont-Moreno, Gyula Bencedi, Stefania Beole, Ionela Berceanu, Alexandru Bercuci, Yaroslav Berdnikov, Daniel Berenyi, Anais Annick Erica Bergognon, Dario Berzano, Latchezar Betev, Anju Bhasin, Ashok Kumar Bhati, Jihyun Bhom, Livio Bianchi, Nicola Bianchi, Chiara Bianchin, Jaroslav Bielcik, Jana Bielcikova, Ante Bilandzic, Sandro Bjelogrlic, F. Blanco, Francesco Blanco, Dmitry Blau, Christoph Blume, Marco Boccioli, Nicolas Bock, Stefan Boettger, Alexey Bogdanov, Hans Boggild, Mikhail Bogolyubsky, Laszlo Boldizsar, Marek Bombara, Julian Book, Herve Borel, Alexander Borissov, Suvendu Nath Bose, Francesco Bossu, Michiel Botje, Bruno Alexandre Boyer, Ermes Braidot, Peter Braun-Munzinger, Marco Bregant, Timo Gunther Breitner, Tyler Allen Browning, Michal Broz, Rene Brun, Elena Bruna, Giuseppe Eugenio Bruno, Dmitry Budnikov, Henner Buesching, Stefania Bufalino, Kyrylo Bugaiev, Oliver Busch, Edith Zinhle Buthelezi, Diego Caballero Orduna, Davide Caffarri, Xu Cai, Helen Louise Caines, Ernesto Calvo Villar, Paolo Camerini, Veronica Canoa Roman, Giovanni Cara Romeo, Francesco Carena, Wisla Carena, Nelson Carlin Filho, Federico Carminati, Camilo Andres Carrillo Montoya, Amaya Ofelia Casanova Diaz, Javier Ernesto Castillo Castellanos, Juan Francisco Castillo Hernandez, Ester Anna Rita Casula, Vasile Catanescu, Costanza Cavicchioli, Cesar Ceballos Sanchez, Jan Cepila, Piergiorgio Cerello, Beomsu Chang, Sylvain Chapeland, Jean-Luc Fernand Charvet, Subhasis Chattopadhyay, Sukalyan Chattopadhyay, Isha Chawla, Michael Gerard Cherney, Cvetan Cheshkov, Brigitte Cheynis, Vasco Miguel Chibante Barroso, David Chinellato, Peter Chochula, Marek Chojnacki, Subikash Choudhury, Panagiotis Christakoglou, Christian Holm Christensen, Peter Christiansen, Tatsuya Chujo, Suh-Urk Chung, Corrado Cicalo, Luisa Cifarelli, Federico Cindolo, Jean Willy Andre Cleymans, Fabrizio Coccetti, Fabio Colamaria, Domenico Colella, Gustavo Conesa Balbastre, Zaida Conesa del Valle, Paul Constantin, Giacomo Contin, Jesus Guillermo Contreras, Thomas Michael Cormier, Yasser Corrales Morales, Pietro Cortese, Ismael Cortes Maldonado, Mauro Rogerio Cosentino, Filippo Costa, Manuel Enrique Cotallo, Elisabetta Crescio, Philippe Crochet, Emilia Cruz Alaniz, Eleazar Cuautle, Leticia Cunqueiro, Andrea Dainese, Hans Hjersing Dalsgaard, Andrea Danu, Debasish Das, Indranil Das, Kushal Das, Sadhana Dash, Ajay Kumar Dash, Sudipan De, Gabriel de Barros, Annalisa De Caro, Giacinto de Cataldo, Jan de Cuveland, Alessandro De Falco, Daniele De Gruttola, Hugues Delagrange, Andrzej Deloff, Vyacheslav Demanov, Nora De Marco, Ervin Denes, Salvatore De Pasquale, Airton Deppman, Ginevra D'Erasmo, Raoul Stefan de Rooij, Miguel Angel Diaz Corchero, Domenico Di Bari, Carmelo Di Giglio, Thomas Dietel, Sergio Di Liberto, Antonio Di Mauro, Pasquale Di Nezza, Roberto Divia, Oeystein Djuvsland, Alexandru Dobrin, Tadeusz Antoni Dobrowolski, Isabel Dominguez, Benjamin Donigus, Olja Dordic, Olga Driga, Anand Kumar Dubey, Laurent Ducroux, Pascal Dupieux, Mihir Ranjan Dutta Majumdar, A. K. Dutta Majumdar, Domenico Elia, David Philip Emschermann, Heiko Engel, Hege Austrheim Erdal, Bruno Espagnon, Magali Danielle Estienne, Shinichi Esumi, David Evans, Gyulnara Eyyubova, Daniela Fabris, Julien Faivre, Davide Falchieri, Alessandra Fantoni, Markus Fasel, Roger Worsley Fearick, Anatoly Fedunov, Dominik Fehlker, Linus Feldkamp, Daniel Felea, Bo Fenton-Olsen, Grigory Feofilov, Arturo Fernandez Tellez, Alessandro Ferretti, Roberta Ferretti, Jan Figiel, Marcel Figueredo, Sergey Filchagin, Dmitry Finogeev, Fiorella Fionda, Enrichetta Maria Fiore, Michele Floris, Siegfried Valentin Foertsch, Panagiota Foka, Sergey Fokin, Enrico Fragiacomo, Ulrich Michael Frankenfeld, Ulrich Fuchs, Christophe Furget, Mario Fusco Girard, Jens Joergen Gaardhoje, Martino Gagliardi, Alberto Gago, Mauro Gallio, Dhevan Raja Gangadharan, Paraskevi Ganoti, Jose Garabatos, Edmundo Garcia-Solis, Irakli Garishvili, Jochen Gerhard, Marie Germain, Claudio Geuna, Andrei George Gheata, Mihaela Gheata, Bruno Ghidini, Premomoy Ghosh, Paola Gianotti, Martin Robert Girard, Paolo Giubellino, Ewa Gladysz-Dziadus, Peter Glassel, Ramon Gomez, Alexey Gonschior, Elena Gonzalez Ferreiro, Laura Helena Gonzalez-Trueba, Pedro Gonzalez-Zamora, Sergey Gorbunov, Ankita Goswami, Sven Gotovac, Varlen Grabski, Lukasz Kamil Graczykowski, Robert Grajcarek, Alessandro Grelli, Costin Grigoras, Alina Gabriela Grigoras, Vladislav Grigoriev, Ara Grigoryan, Smbat Grigoryan, Boris Grinyov, Nevio Grion, Philippe Gros, Jan Fiete Grosse-Oetringhaus, Jean-Yves Grossiord, Raffaele Grosso, Fedor Guberbr, Rachid Guernane, Cesar Guerra Gutierrez, Barbara Guerzoni, Maxime Rene Joseph Guilbaud, Kristjan Herlache Gulbrandsen, Taku Gunji, Anik Gupta, Ramni Gupta, Hans Gutbrod, Oystein Senneset Haaland, Cynthia Marie Hadjidakis, Maria Haiduc, Hideki Hamagaki, Gergoe Hamar, Byounghee Han, Luke David Hanratty, Alexander Hansen, Zuzana Harmanova, John William Harris, Matthias Hartig, Dumitru Hasegan, Despoina Hatzifotiadou, Arsen Hayrapetyan, Stefan Thomas Heckel, Markus Ansgar Heide, Haavard Helstrup, Andrei Ionut Herghelegiu, Gerardo Antonio Herrera Corral, Norbert Herrmann, Benjamin Andreas Hess, Kristin Fanebust Hetland, Bernard Hicks, Per Thomas Hille, Boris Hippolyte, Takuma Horaguchi, Yasuto Hori, Peter Zahariev Hristov, Ivana Hrivnacova, Meidana Huang, Thomas Humanic, Dae Sung Hwang, Raphaelle Ichou, Radiy Ilkaev, Iryna Ilkiv, Motoi Inaba, Elisa Incani, Gian Michele Innocenti, Pier Giorgio Innocenti, Mikhail Ippolitov, Muhammad Irfan, Cristian George Ivan, Vladimir Ivanov, Marian Ivanov, Andrey Ivanov, Oleksii Ivanytskyi, Adam Wlodzimierz Jacholkowski, Peter Jacobs, Haeng Jin Jang, Swensy Gwladys Jangal, Malgorzata Anna Janik, Rudolf Janik, Sandun Jayarathna, Satyajit Jena, Deeptanshu Manu Jha, Raul Tonatiuh Jimenez Bustamante, Lennart Jirden, Peter Graham Jones, Hyung Taik Jung, Anton Jusko, Alexei Kaidalov, Vanik Kakoyan, Sebastian Kalcher, Peter Kalinak, Tuomo Esa Aukusti Kalliokoski, Alexander Philipp Kalweit, Kalliopi Kanaki, Ju Hwan Kang, Vladimir Kaplin, Ayben Karasu Uysal, Oleg Karavichev, Tatiana Karavicheva, Evgeny Karpechev, Andrey Kazantsev, Udo Wolfgang Kebschull, Ralf Keidel, Palash Khan, Mohisin Mohammed Khan, Shuaib Ahmad Khan, Alexei Khanzadeev, Yury Kharlov, Bjarte Kileng, Do Won Kim, Mimae Kim, Minwoo Kim, Seon Hee Kim, Dong Jo Kim, Se Yong Kim, Jonghyun Kim, Jin Sook Kim, Beomkyu Kim, Taesoo Kim, Stefan Kirsch, Ivan Kisel, Sergey Kiselev, Adam Ryszard Kisiel, Jennifer Lynn Klay, Jochen Klein, Christian Klein-Bosing, Michael Kliemant, Alexander Kluge, Michael Linus Knichel, Anders Garritt Knospe, Kathrin Koch, Markus Kohler, Anatoly Kolojvari, Valery Kondratiev, Natalia Kondratyeva, Artem Konevskih, Andrey Korneev, Ravjeet Kour, Marek Kowalski, Serge Kox, Greeshma Koyithatta Meethaleveedu, Jiri Kral, Ivan Kralik, Frederick Kramer, Ingrid Christine Kraus, Tobias Krawutschke, Michal Krelina, Matthias Kretz, Marian Krivda, Filip Krizek, Miroslav Krus, Evgeny Kryshen, Mikolaj Krzewicki, Yury Kucheriaev, Christian Claude Kuhn, Paul Kuijer, Igor Kulakov, Jitendra Kumar, Podist Kurashvili, A. B. Kurepin, A. 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Abstract

The ALICE experiment at the LHC has studied J/psi production at mid-rapidity in pp collisions at root s = 7 TeV through its electron pair decay on a data sample corresponding to an integrated luminosity L-int = 5.6 nb(-1). The fraction of J/psi from the decay of long-lived beauty hadrons was determined for J/psi candidates with transverse momentum p(t) > 1,3 GeV/c and rapidity vertical bar y vertical bar < 0.9. The cross section for prompt J/psi mesons, i.e. directly produced J/psi and prompt decays of heavier charmonium states such as the psi(2S) and chi(c) resonances, is sigma(prompt J/psi) (p(t) > 1.3 GeV/c, vertical bar y vertical bar < 0.9) = 8.3 +/- 0.8(stat.) +/- 1.1 (syst.)(-1.4)(+1.5) (syst. pol.) mu b. The cross section for the production of b-hadrons decaying to J/psi with p(t) > 1.3 GeV/c and vertical bar y vertical bar < 0.9 is a sigma(J/psi <- hB) (p(t) > 1.3 GeV/c, vertical bar y vertical bar < 0.9) = 1.46 +/- 0.38 (stat.)(-0.32)(+0.26) (syst.) mu b. The results are compared to QCD model predictions. The shape of the p(t) and y distributions of b-quarks predicted by perturbative QCD model calculations are used to extrapolate the measured cross section to derive the b (b) over bar pair total cross section and d sigma/dy at mid-rapidity.
Original languageEnglish
Article number65
JournalJournal of High Energy Physics
Issue number11
DOIs
Publication statusPublished - 2012

Subject classification (UKÄ)

  • Subatomic Physics

Free keywords

  • Hadron-Hadron Scattering

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