Observation of \(J/\psi\) pair production in pp collisions at \(\sqrt{s}=7 TeV\)

• Published in: arXiv.org 2012-01
• Main Authors: Adrover, C, P Alvarez Cartelle, Amhis, Y, Arrabito, L, Bachmann, S, Barter, W, Belous, K, Ben-Haim, E, Bernet, R, Blusk, S, Bonivento, W, Borgia, A, Bowcock, T J V, Brambach, T, Brett, D, Brisbane, S, Britsch, M, Brown, H, Cadeddu, S, Camboni, A, Cattaneo, M, Coca, C, Collins, P, Constantin, F, Corti, G, De Paula, L, Eisele, F, Eisenhardt, S, Ekelhof, R, Pereira, D Esperante, Falabella, A, Ferro-Luzzi, M, ty, R, Frosini, M, Furcas, S, Gauvin, N, Grecu, A, Yu Guz, Haefeli, G, Huston, R S, Knecht, M, Koppenburg, P, Kreplin, K, Kruse, F, Lanciotti, E, Langenbruch, C, R Le Gac, Liles, M, Lopez-March, N, Luisier, J, Maev, O, Martellotti, G, Matteuzzi, C, Mclean, C, Miglioranzi, S, Müller, K, Niess, V, Okhrimenko, O, Palacios, J, Panman, J, Parkes, C, Parkinson, C J, Passaleva, G, Patrignani, C, Pavel-Nicorescu, C, M Pepe Altarelli, Perego, D L, M Plo Casasus, Polok, G, Polycarpo, E, Popov, D, Rangel, M S, Reid, M M, dos Reis, A C, Ricciardi, S, Robbe, P, Sabatino, G, Saborido Silva, J J, Santacesaria, R, Santovetti, E, Savrina, D, Schopper, A, Schwemmer, R, Serrano, J, Shapkin, M, Shires, A, Skottowe, H P, Smith, N A, Sobczak, K, Steinkamp, O, Subbiah, V K, Tuning, N, Uwer, U, Valenti, G, Viaud, B, Wacker, K, Wandernoth, S, Websdale, D, Young, R, Zhong, L
• Format: Article
• Language: English
• Subjects: Luminosity; Pair production; Particle collisions; Transverse momentum
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1109.0963

The production of \(J/\psi\) pairs in proton-proton collisions at a centre-of-mass energy of 7 TeV has been observed using an integrated luminosity of \(37.5 pb^{-1}\) collected with the LHCb detector. The production cross-section for pairs with both \jpsi in the rapidity range \(2