1. Measurement of the Branching FractionB(Bu+→J/ψπ+)and Search forBc+→J/ψπ+
- Author
-
P. Murat, M. Krasberg, L. Nodulman, T. Chikamatsu, M. Gold, M. Mishina, Intae Yu, G. Bauer, A. D. Hardman, F. D. Snider, T. Ohmoto, Doyeong Kim, C. Miao, S. Segler, D. W. Gerdes, E. Cocca, T. L. Watts, B. T. Huffman, J. Vails, S. Bagdasarov, Maria Spiropulu, Sally Seidel, V. Bolognesi, Kazuhiko Hara, S. Miscetti, Robert M Harris, M. Shimojima, H. Akimoto, Andrea Castro, P. Hu, K. Karr, G. Unal, Andreas Warburton, R. D. Kennedy, S. Miyashita, Yasuo Fukui, M. Ninomiya, Nicola Labanca, T. Okusawa, Marina Cobal, C. Wei, G. Bellettini, J. Done, J. Huston, A. Scribano, R. Kephart, Y. Iwata, F. Spinella, T. Asakawa, M. Binkley, Daniela Bortoletto, E. Hayashi, Kevin Einsweiler, Q. Shen, M. G. Albrow, E. Kajfasz, Alan Sill, Mosè Mariotti, R. L. Wagner, K. Goulianos, Andrea Sansoni, A. Akopian, D. Glenzinski, P. Lukens, C. Pagliarone, S. Galeotti, Fumio Abe, G. Sullivan, V. Papadimitriou, R. K. Plunkett, S. Donati, D. Wolinski, H. Keutelian, K. Takikawa, T. Ohsugi, T. Baumann, R. Hamilton, M. Pillai, S. A. Hauger, G. Punzi, E. Engels, M. Vondracek, C. Loomis, P. de Barbaro, K. Ragan, M. Timko, R. Culbertson, D. Lucchesi, J. Wolinski, K. Biery, K. Kelley, S. Leone, M. Okabe, M. J. Shochet, J. Mansour, A. Byon-Wagner, J. F. de Troconiz, R. Mattingly, H. S. Budd, S. E. Kuhlmann, J. P. Marriner, M. Cordelli, J. Skarha, P. Koehn, R. W. Kadel, D. Toback, K. Yasuoka, N. B. Wallace, W. Ashmanskas, A. Zanetti, B. Flaugher, G. Velev, G. Busetto, Brian L Winer, T. Takada, L. Breccia, A. Bodek, M. Garcia-Sciveres, R. J. Miller, Jochen Jens Heinrich, S. Tether, P. Schlabach, K. E. Ohl, R. G. Wagner, W. Koska, J. Incandela, N. M. Shaw, P. K. Teng, A. Mukherjee, T. Takano, Q. Fan, M. P. Schmidt, B. Denby, G. Sganos, Hiroshi Ikeda, C. Yosef, J. Conway, R. C. Webb, A. Martin, Y. Seiya, Stephan Lammel, Tommaso Dorigo, C. H. Wang, M. Lindgren, P. Kesten, R. Ströhmer, A. Titov, Kiminori Kondo, K. Strahl, Umesh Joshi, B. Kharadia, J. Cooper, R. M. Keup, S. H. Kim, P. Yeh, H. Sato, Marjorie Shapiro, N. Eddy, L. Pescara, H. H. Williams, F. Ptohos, W. J. Robertson, I. Nakano, J. Yoh, B. A. Barnett, L. Keeble, Giorgio Apollinari, K. Tollefson, R. J. Hollebeek, Y. Ye, J. I. Lamoureux, W. K. Sakumoto, D. Amidei, T. L. Thomas, N. Moggi, S. P. Pappas, H. Wenzel, F. Ukegawa, L. Pondrom, E. Wicklund, Thomas LeCompte, G. Piacentino, J. Hylen, G. W. Foster, E. Buckley-Geer, J. E. Elias, L. Santi, C. Couyoumtzelis, A. Perazzo, S. R. Hahn, W. Carithers, Andrew Beretvas, A. Soumarokov, J. Tseng, R. Ely, T. Kuwabara, A. Ribon, F. Zetti, C. Hawk, P. Azzi-Bacchetta, C. Bromberg, W. Kowald, G. Introzzi, A. Stefanini, M. Atac, M. T. Cheng, L. Holloway, C. Ferretti, S. Aota, M. Franklin, J. Iwai, Scott D. Metzler, Riccardo Paoletti, L. Yu, P. Sinervo, J. Berryhill, S. R. Amendolia, K. Sliwa, A. Gordon, D. Crane, S. Geer, J. Bao, J. Antos, C. Grosso-Pilcher, Stefano Belforte, Henrik Jeldtoft Jensen, S. Zucchelli, R. E. Blair, H. Y. Chao, Teruki Kamon, S. Truitt, Craig Blocker, Kaori Maeshima, S. Funaki, C. Holck, R. Vidal, Konstanty Sumorok, J. Patrick, D. Reher, P. Sphicas, F. Keyvan, F. Rimondi, A. Korytov, S. C. van den Brink, J. C. Freeman, F. Tartarelli, Virgil E Barnes, M. Campbell, M. D. Peters, P. Giannetti, N. Bruner, Y. Teramoto, T. A. Fuess, L. Ristori, J. Siegrist, James D. Olsen, Hong Sj, P. Wilson, J. Spalding, T. Kaneko, Jay Hauser, P. F. Shepard, S. H. Oh, Bj Kim, N. Parashar, S. Lusin, R. Handler, P. T. Chang, E. Kovacs, W. C. Wester, G. Giusti, Nicola Bacchetta, P. S. Chang, F. Cervelli, N. Uemura, A. Dunn, Dario Bisello, S. Rolli, R. Oliveira, R. P. Thun, Q. F. Wang, A. Bhatti, J. Romano, M. Frautschi, J. Gonzalez, A. Menzione, F. Bedeschi, B. Harral, T. Miyamoto, G. Bolla, R. S. Guo, P. F. Derwent, Sacha E Kopp, H. Minato, C. Nelson, J. Steele, D. Errede, A. Hölscher, J. Lys, A. Barbaro-Galtieri, L. Gladney, S. Dell'Agnello, R. Roser, Hyun-Chul Kim, M. J. Wang, Emanuela Barzi, Y. Kato, G. Guillian, T. Miao, R. M. Hans, D. Vucinic, T. A. Keaffaber, R. Oishi, J.I. Friedman, S. Bertolucci, W-M. Yao, Weiya Zhang, G. Michail, J. R. Bensinger, L. Groer, K. T. Pitts, Alan Garfinkel, M. Yin, J. Wahl, E. Meschi, Sung Keun Park, Catherine Newman-Holmes, I. Fiori, Xin Wu, J. Suzuki, P. McIntyre, J. D. Lewis, T. Speer, J. N. Bellinger, J. P. Berge, L. Demortier, R. Wilkinson, D. Neuberger, Daniel P Cronin-Hennessy, Douglas Benjamin, N. S. Lockyer, Y. Cen, C. N. Chiou, M. W. Bailey, L. Christofek, Kevin Burkett, Wendy Taylor, J. A.J. Matthews, S. Vejcik, G. Gagliardi, G. Houk, Hiroto Kambara, P. Melese, R. Demina, D. Saltzberg, P. Singh, A. Parri, D. Kestenbaum, Kostantinos Kordas, C. Campagnari, M. Loreti, M. Dell'Orso, R. E. Hughes, T. Daniels, Petar Maksimovic, T. Takahashi, A. Caner, Nicola Turini, J. W. Chapman, James Mueller, Luca Stanco, D. Benton, D. Winn, P. Limon, John Huth, F. DeJongh, S. Cihangir, J. Proudfoot, C. Haber, Manfred Paulini, T. Song, W. Badgett, H. Nakada, L. Rosenson, W. Bokhari, J. C. Yun, Yongsun Kim, T. Uchida, L. E. Kirsch, Nikos Giokaris, A. Maghakian, H. Grassmann, K. L. Byrum, P. Giromini, H. Kasha, S. Tkaczyk, David Stuart, G. P. Yeh, Tony Liss, Teresa Rodrigo, T. J. Phillips, Y. Morita, E. S. Hafen, D. D. Yovanovitch, J. Wyss, G. Chiarelli, M. M. Deninno, O. Long, E. Kuns, S. Behrends, A. B. Wicklund, E. E. Schmidt, S. Delchamps, K. D. Hoffman, Marcus Hohlmann, Le Zhang, C. Wendt, Jay Dittmann, Michele Gallinaro, N. Tamura, Jing Wang, S. Worm, C. Anway-Wiese, A. T. Goshaw, H. Mitsushio, F. Azfar, M. Incagli, G. Pauletta, M. Contreras, A. T. Laasanen, S. Errede, D. Theriot, J. Kroll, James Strait, D. Cauz, Duncan Carlsmith, T. Muller, A. G. Clark, J. Bondreau, M. Mangano, J. Cammerata, Jun Lu, Mark Kruse, A. Tollestrup, Paul Tipton, T. Devlin, B. Bevensee, Jose M. Benlloch, J. Konigsberg, Avraham Yagil, Leonard Spiegel, Tomoko Yoshida, and S. B. Kim
- Subjects
Physics ,Crystallography ,Branching fraction ,High Energy Physics::Phenomenology ,General Physics and Astronomy ,High Energy Physics::Experiment ,Collider Detector at Fermilab - Abstract
We report on a measurement of the branching fraction of the Cabibbo-suppressed decay ${B}_{u}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+}$, where $J/\ensuremath{\psi}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$. The data were collected by the Collider Detector at Fermilab during 1992--1995 and correspond to an integrated luminosity of $110{\mathrm{pb}}^{\ensuremath{-}1}$ in $\overline{p}p$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\phantom{\rule{0ex}{0ex}}\mathrm{TeV}$. A signal of ${28}_{\ensuremath{-}9}^{+10}$ events is observed and we determine the ratio of branching fractions $B({B}_{u}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+})/B({B}_{u}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+})$ to be $[{5.0}_{\ensuremath{-}1.7}^{+1.9}(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.1(\mathrm{syst})]%$. Using the world average value for $B({B}_{u}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+})$, we calculate the branching fraction $B({B}_{u}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+})$ to be $({5.0}_{\ensuremath{-}1.9}^{+2.1})\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$. We also search for the decay ${B}_{c}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+}$ and report a $95%$ confidence level limit on $\ensuremath{\sigma}({B}_{c}^{+})B({B}_{c}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+})/\ensuremath{\sigma}({B}_{u}^{+})B({B}_{u}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+})$ as a function of the ${B}_{c}^{+}$ lifetime.
- Published
- 1996
- Full Text
- View/download PDF