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Phys Rev Lett. 2004 Oct 15;93(16):162002. doi: 10.1103/PhysRevLett.93.162002. Epub 2004 Oct 14.

Observation and properties of the X(3872) decaying to J/psipi(+)pi(-) in pp collisions at sqrt[s]=1.96 TeV.

Physical review letters

V M Abazov, B Abbott, M Abolins, B S Acharya, D L Adams, M Adams, T Adams, M Agelou, J-L Agram, S N Ahmed, S H Ahn, G D Alexeev, G Alkhazov, A Alton, G Alverson, G A Alves, S Anderson, B Andrieu, Y Arnoud, A Askew, B Asman, C Autermann, C Avila, L Babukhadia, T C Bacon, A Baden, S Baffioni, B Baldin, P W Balm, S Banerjee, E Barberis, P Bargassa, P Baringer, C Barnes, J Barreto, J F Bartlett, U Bassler, D Bauer, A Bean, S Beauceron, F Beaudette, M Begel, S B Beri, G Bernardi, I Bertram, M Besançon, A Besson, R Beuselinck, V A Bezzubov, P C Bhat, V Bhatnagar, M Bhattacharjee, M Binder, A Bischoff, K M Black, I Blackler, G Blazey, F Blekman, D Bloch, U Blumenschein, A Boehnlein, T A Bolton, P Bonamy, F Borcherding, G Borissov, K Bos, T Bose, C Boswell, A Brandt, G Briskin, R Brock, G Brooijmans, A Bross, D Buchholz, M Buehler, V Buescher, S Burdin, T H Burnett, E Busato, J M Butler, J Bystricky, F Canelli, W Carvalho, B C K Casey, D Casey, N M Cason, H Castilla-Valdez, S Chakrabarti, D 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Kasper, D Kau, Z Ke, R Kehoe, S Kermiche, S Kesisoglou, A Khanov, A Kharchilava, Y M Kharzheev, K H Kim, B Klima, M Klute, J M Kohli, M Kopal, V Korablev, J Kotcher, B Kothari, A V Kotwal, A Koubarovsky, A Kouchner, O Kouznetsov, A V Kozelov, J Kozminski, J Krane, M R Krishnaswamy, S Krzywdzinski, M Kubantsev, S Kuleshov, Y Kulik, S Kunori, A Kupco, T Kurca, V E Kuznetsov, S Lager, N Lahrichi, G Landsberg, J Lazoflores, A-C Le Bihan, P Lebrun, S W Lee, W M Lee, A Leflat, C Leggett, F Lehner, C Leonidopoulos, P Lewis, J Li, Q Z Li, X Li, J G R Lima, D Lincoln, S L Linn, J Linnemann, R Lipton, L Lobo, A Lobodenko, M Lokajicek, A Lounis, J Lu, H J Lubatti, A Lucotte, L Lueking, C Luo, M Lynker, A L Lyon, A K A Maciel, R J Madaras, P Mättig, A-M Magnan, M Maity, P K Mal, S Malik, V L Malyshev, V Manankov, H S Mao, Y Maravin, T Marshall, M Martens, M I Martin, S E K Mattingly, A A Mayorov, R McCarthy, R McCroskey, T McMahon, D Meder, H L Melanson, A Melnitchouk, X Meng, M Merkin, K W 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D Schamberger, H Schellman, P Schieferdecker, C Schmitt, A Schukin, A Schwartzman, R Schwienhorst, S Sengupta, E Shabalina, V Shary, W D Shephard, D Shpakov, R A Sidwell, V Simak, V Sirotenko, D Skow, P Slattery, R P Smith, K Smolek, G R Snow, J Snow, S Snyder, S Söldner-Rembold, X Song, Y Song, L Sonnenschein, A Sopczak, V Sorín, M Sosebee, K Soustruznik, M Souza, N R Stanton, J Stark, J Steele, G Steinbrück, K Stevenson, V Stolin, A Stone, D A Stoyanova, J Strandberg, M A Strang, M Strauss, R Ströhmer, M Strovink, L Stutte, A Sznajder, M Talby, P Tamburello, W Taylor, P Telford, J Temple, S Tentindo-Repond, E Thomas, B Thooris, M Tomoto, T Toole, J Torborg, S Towers, T Trefzger, S Trincaz-Duvoid, T G Trippe, B Tuchming, C Tully, A S Turcot, P M Tuts, L Uvarov, S Uvarov, S Uzunyan, B Vachon, R Van Kooten, W M van Leeuwen, N Varelas, E W Varnes, I Vasilyev, M Vaupel, P Verdier, L S Vertogradov, M Verzocchi, F Villeneuve-Seguier, J-R Vlimant, E Von Toerne, M Vreeswijk, T Vu Anh, H D Wahl, R Walker, N Wallace, Z-M Wang, J Warchol, M Warsinsky, G Watts, M Wayne, M Weber, H Weerts, M Wegner, A White, V White, D Whiteson, D Wicke, D A Wijngaarden, G W Wilson, S J Wimpenny, J Wittlin, T Wlodek, M Wobisch, J Womersley, D R Wood, Z Wu, T R Wyatt, Q Xu, N Xuan, R Yamada, T Yasuda, Y A Yatsunenko, Y Yen, K Yip, S W Youn, J Yu, A Yurkewicz, A Zabi, A Zatserklyaniy, M Zdrazil, C Zeitnitz, B Zhang, D Zhang, X Zhang, T Zhao, Z Zhao, H Zheng, B Zhou, Z Zhou, J Zhu, M Zielinski, D Zieminska, A Zieminski, R Zitoun, V Zutshi, E G Zverev, A Zylberstejn,

Affiliations

  1. Joint Institute for Nuclear Research, Dubna, Russia.

PMID: 15524981 DOI: 10.1103/PhysRevLett.93.162002

Abstract

We report the observation of the X(3872) in the J/psipi(+)pi(-) channel, with J/psi decaying to mu(+)mu(-), in pp collisions at sqrt[s]=1.96 TeV. Using approximately 230 pb(-1) of data collected with the Run II D0 detector, we observe 522+/-100 X(3872) candidates. The mass difference between the X(3872) state and the J/psi is measured to be 774.9+/-3.1(stat)+/-3.0(syst) MeV/c(2). We have investigated the production and decay characteristics of the X(3872) and find them to be similar to those of the psi(2S) state.

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