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A search for the rare decay D-0 -> mu(+) mu(-) is performed using a data sample, corresponding to an integrated luminosity of 0.9 fb(-1), of pp collisions collected at a centre-of-mass energy of 7 TeV by the LHCb experiment. The observed number of events is consistent with the background expectations and corresponds to an upper limit of B(D-0 -> mu(+) mu(-)) < 6.2 (7.6) x 10(-9) at 90% (95%) confidence level. This result represents an improvement of more than a factor twenty with respect to previous measurements. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
Olivier Schneider, Aurelio Bay, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Lesya Shchutska, Elena Graverini, Donal Patrick Hill, Marie Theres Christin Bachmayer, Sebastian Schulte, Aravindhan Venkateswaran, Luis Miguel Garcia Martin, Vitalii Lisovskyi, Serhii Cholak, Federico Ronchetti, Anni Matilda Kauniskangas, Raphaël van Laak, Ettore Zaffaroni, Elisabeth Maria Niel, Pierre Paul Louis Mayencourt, Brianna Leililani Thielen, Arnaud Merlin Gauthey, Gianluca Zunica, Abdul-Kerim Guseinov, Esteban Curras Rivera, Yifei Song, Radoslav Marchevski, Roberto Ribatti, Alexandre Brea Rodriguez, Dimitrios Kaminaris, Rita De Sousa Ataíde Da Silva
Olivier Schneider, Aurelio Bay, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Lesya Shchutska, Elena Graverini, Marie Theres Christin Bachmayer, Sebastian Schulte, Aravindhan Venkateswaran, Yunxuan Song, Luis Miguel Garcia Martin, Vitalii Lisovskyi, Sonia Amina Bouchiba, Federico Ronchetti, Anni Matilda Kauniskangas, Raphaël van Laak, Ettore Zaffaroni, Pierre Paul Louis Mayencourt, Arnaud Merlin Gauthey, Gianluca Zunica, Abdul-Kerim Guseinov, Esteban Curras Rivera, Radoslav Marchevski, Roberto Ribatti, Alexandre Brea Rodriguez, Dimitrios Kaminaris, Maria Carolina Feliciano Faria, Rita De Sousa Ataíde Da Silva, Louis André Marie Jean Henry, Spencer Edward Collaviti
Jan Steggemann, Konstantin Androsov, Anna Mascellani, Joanna Malgorzata Wanczyk