Accès ouvert déclaré
2004
article
Measurement of sin 2/3 with hadronic and previously unused muonic J/ψ decays
B Aubert, R Barate, D Boutigny, JM Gaillard, A Hicheur, Y Karyotakis, Jp Lees, P Robbe, V Tisserand, A Zghiche, A Palano, A Pompili, JC Chen, ND Qi, G Rong, P Wang, Zhu Ys, G Eigen, I Ofte, B Stugu, GS Abrams, AW Borgland, AB Breon, DN Brown, J Button-Shafer, RN Cahn, E Charles, C. Day, MS Gill, AV Gritsan, Y Groysman, RG Jacobsen, Rw Kadel, J Kadyk, LT Kerth, YG Kolomensky, JF Kral, G Kukartsev, C Leclerc, ME Levi, G Lynch, LM Mir, PJ Oddone, Tj Orimoto, M Pripstein, NA Roe, A Romosan, MT Ronan, VG Shelkov, AV Telnov, WA Wenzel, K Ford, TJ Harrison, CM Hawkes, DJ Knowles, SE Morgan, RC Penny, AT Watson, NK Watson, K Goetzen, T Held, H Koch, B Lewandowski, M Pelizaeus, K Peters, H Schmuecker, M Steinke, JT Boyd, N Chevalier, WN Cottingham, MP Kelly, Te Latham, C Mackay, FF Wilson, K Abe, T Cuhadar-Donszelmann, C Hearty, Ts Mattison, JA McKenna, D Thiessen, P Kyberd, AK McKemey, VE Blinov, AD Bukin, VB Golubev, VN Ivanchenko, EA Kravchenko, AP Onuchin, SI Serednyakov, YI Skovpen, Ep Solodov, AN Yushkov, D Best, M Bruinsma, M Chao, D Kirkby, AJ Lankford, M Mandelkern, RK Mommsen, W Roethel
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Le résumé fourni par la source
We report a measurement of the CP-violation parameter sin 2β with B0J/ψKS0 decays in which the J/ψ decays to hadrons or to muons that do not satisfy our standard identification criteria. With a sample of 88 million BB̄ events collected by the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC, we reconstruct 100±17 such events, with J/ψ→π-π -π0 being the most prevalent, and measure sin2β=1.56± 0.42(stat)±0.21(syst). © 2004 The American Physical Society.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
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Les sujets associés
Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsNeutrino Physics Research