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  • Measurement of direct CP vi...
    Augsten, K.; Avila, C.; Bandurin, D. V.; Bartlett, J. F.; Beattie, M.; Bellantoni, L.; Beri, S. B.; Bhat, P. C.; Boline, D.; Bunichev, V.; Chen, G.; Choudhary, B.; Claes, D.; Cooper, W. E.; Corcoran, M.; Cousinou, M. -C; Das, A.; de Jong, S. J.; De la Cruz-Burelo, E.; Desai, S.; Deterre, C.; Ding, P. F.; Duperrin, A.; Elvira, V. D.; Evdokimov, V. N.; Feng, L.; Fisher, W.; Fuess, S.; Greenlee, H.; Gris, Ph; Gutierrez, G.; Harder, K.; Harel, A.; Head, T.; Heinson, A. P.; Hoeneisen, B.; Hubacek, Z.; Iashvili, I.; Ilchenko, Y.; Illingworth, R.; Jesik, R.; Johns, K.; Johnson, E.; Jonckheere, A.; Joshi, J.; Khanov, A.; Kharchilava, A.; Kiselevich, I.; Lamont, I.; Lee, H. S.; Li, H.; Li, L.; Lim, J. K.; Lincoln, D.; Liu, H.; Lobodenko, A.; Malik, S.; Mason, N.; McGivern, C. L.; Melnitchouk, A.; Mercadante, P. G.; Meyer, A.; Meyer, J.; Miconi, F.; Mondal, N. K.; Nguyen, H. T.; Orduna, J.; Pal, A.; Parashar, N.; Parua, N.; Patwa, A.; Peters, Y.; Petroff, P.; Pleier, M. -A; Rominsky, M.; Ross, A.; Royon, C.; Santos, A. S.; Savage, G.; Schamberger, R. D.; Severini, H.; Shabalina, E.; Shaw, S.; Shchukin, A. A.; Skubic, P.; Slattery, P.; Snow, J.; Sonnenschein, L.; Stoyanova, D. A.; Svoisky, P.; Van Kooten, R.; Vilanova, D.; Wahl, H. D.; Wang, M. H. L. S.; Warchol, J.; Welty-Rieger, L.; Yasuda, T.; Yin, H.; Zieminska, D.; Zivkovic, L.

    Physical review letters, 2013, Letnik: 110, Številka: 24
    Journal Article

    We present a measurement of the direct CP-violating charge asymmetry in B-+/- mesons decaying to J/psi K-+/- and J/psi pi(+/-) where J/psi decays to mu(+)mu(-), using the full run II data set of 10.4 fb(-1) of proton-antiproton collisions collected using the D0 detector at the Fermilab Tevatron Collider. A difference in the yield of B- and B+ mesons in these decays is found by fitting to the difference between their reconstructed invariant mass distributions resulting in asymmetries of A(J/psi K) = 0.59 +/- 0.37%, which is the most precise measurement to date, and A(J/psi pi) = -4.2 +/- 4.5%. Both measurements are consistent with standard model predictions.