1. Measurement of Rb Using a Vertex Mass Tag
- Author
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K. Abe, T. Akagi, N. J. Allen, W. W. Ash, D. Aston, K. G. Baird, C. Baltay, H. R. Band, M. B. Barakat, G. Baranko, O. Bardon, T. L. Barklow, G. L. Bashindzhagyan, A. O. Bazarko, R. Ben-David, A. C. Benvenuti, G. M. Bilei, D. Bisello, G. Blaylock, J. R. Bogart, B. Bolen, T. Bolton, G. R. Bower, J. E. Brau, M. Breidenbach, W. M. Bugg, D. Burke, T. H. Burnett, P. N. Burrows, W. Busza, A. Calcaterra, D. O. Caldwell, D. Calloway, B. Camanzi, M. Carpinelli, R. Cassell, R. Castaldi, A. Castro, M. Cavalli-Sforza, A. Chou, E. Church, H. O. Cohn, J. A. Coller, V. Cook, R. Cotton, R. F. Cowan, D. G. Coyne, G. Crawford, A. D'Oliveira, C. J. S. Damerell, M. Daoudi, N. de Groot, R. De Sangro, R. Dell'Orso, P. J. Dervan, M. Dima, D. N. Dong, P. Y. C. Du, R. Dubois, B. I. Eisenstein, R. Elia, E. Etzion, S. Fahey, D. Falciai, C. Fan, J. P. Fernandez, M. J. Fero, R. Frey, T. Gillman, G. Gladding, S. Gonzalez, E. L. Hart, J. L. Harton, A. Hasan, Y. Hasegawa, K. Hasuko, S. J. Hedges, S. S. Hertzbach, M. D. Hildreth, J. Huber, M. E. Huffer, E. W. Hughes, H. Hwang, Y. Iwasaki, D. J. Jackson, P. Jacques, J. A. Jaros, Z. Y. Jiang, A. S. Johnson, J. R. Johnson, R. A. Johnson, T. Junk, R. Kajikawa, M. Kalelkar, H. J. Kang, I. Karliner, H. Kawahara, H. W. Kendall, Y. D. Kim, M. E. King, R. King, R. R. Kofler, N. M. Krishna, R. S. Kroeger, J. F. Labs, M. Langston, A. Lath, J. A. Lauber, D. W. G. S. Leith, V. Lia, M. X. Liu, X. Liu, M. Loreti, A. Lu, H. L. Lynch, J. Ma, G. Mancinelli, S. Manly, G. Mantovani, T. W. Markiewicz, T. Maruyama, H. Masuda, E. Mazzucato, A. K. McKemey, B. T. Meadows, R. Messner, P. M. Mockett, K. C. Moffeit, T. B. Moore, D. Muller, T. Nagamine, S. Narita, U. Nauenberg, H. Neal, M. Nussbaum, Y. Ohnishi, N. Oishi, D. Onoprienko, L. S. Osborne, R. S. Panvini, C. H. Park, H. Park, T. J. Pavel, I. Peruzzi, M. Piccolo, L. Piemontese, E. Pieroni, K. T. Pitts, R. J. Plano, R. Prepost, C. Y. Prescott, G. D. Punkar, J. Quigley, B. N. Ratcliff, T. W. Reeves, J. Reidy, P. L. Reinertsen, P. E. Rensing, L. S. Rochester, P. C. Rowson, J. J. Russell, O. H. Saxton, T. Schalk, R. H. Schindler, B. A. Schumm, J. Schwiening, S. Sen, V. V. Serbo, M. H. Shaevitz, J. T. Shank, G. Shapiro, D. J. Sherden, K. D. Shmakov, C. Simopoulos, N. B. Sinev, S. R. Smith, M. B. Smy, J. A. Snyder, H. Staengle, P. Stamer, H. Steiner, R. Steiner, M. G. Strauss, D. Su, F. Suekane, A. Sugiyama, S. Suzuki, M. Swartz, A. Szumilo, T. Takahashi, F. E. Taylor, E. Torrence, A. I. Trandafir, J. D. Turk, T. Usher, J. Va'vra, C. Vannini, E. Vella, J. P. Venuti, R. Verdier, P. G. Verdini, D. L. Wagner, S. R. Wagner, A. P. Waite, S. J. Watts, A. W. Weidemann, E. R. Weiss, J. S. Whitaker, S. L. White, F. J. Wickens, D. C. Williams, S. H. Williams, S. Willocq, R. J. Wilson, W. J. Wisniewski, M. Woods, G. B. Word, J. Wyss, R. K. Yamamoto, J. M. Yamartino, X. Yang, J. Yashima, S. J. Yellin, C. C. Young, H. Yuta, G. Zapalac, R. W. Zdarko, J. Zhou, Abe, K, Akagi, T, Allen, N, Ash, W, Aston, D, Baird, K, Baltay, C, Band, H, Barakat, M, Baranko, G, Bardon, O, Barklow, T, Bashindzhagyan, G, Bazarko, A, Ben David, R, Benvenuti, A, Bilei, G, Bisello, D, Blaylock, G, Bogart, J, Bolen, B, Bolton, T, Bower, G, Brau, J, Breidenbach, M, Bugg, W, Burke, D, Burnett, T, Burrows, P, Busza, W, Calcaterra, A, Caldwell, D, Calloway, D, Camanzi, B, Carpinelli, M, Cassell, R, Castaldi, R, Castro, A, Cavalli Sforza, M, Chou, A, Church, E, Cohn, H, Coller, J, Cook, V, Cotton, R, Cowan, R, Coyne, D, Crawford, G, D'Oliveira, A, Damerell, C, Daoudi, M, de Groot, N, De Sangro, R, Dell'Orso, R, Dervan, P, Dima, M, Dong, D, Du, P, Dubois, R, Eisenstein, B, Elia, R, Etzion, E, Fahey, S, Falciai, D, Fan, C, Fernandez, J, Faro, M, Frey, R, Gillman, T, Gladding, G, Gonzalez, S, Hart, E, Harton, J, Hasan, A, Hasegawa, Y, Hasuko, K, Hedges, S, Hertzbach, S, Hildreth, M, Huber, J, Huffer, M, Hughes, E, Hwang, H, Iwasaki, Y, Jackson, D, Jacques, P, Jaros, J, Jiang, Z, Johnson, A, Johnson, J, Johnson, R, Junk, T, Kajikawa, R, Kalelkar, M, Kang, H, Karliner, I, Kawahara, H, Kendall, H, Kim, Y, King, M, King, R, Kofler, R, Krishna, N, Kroeger, R, Labs, J, Langston, M, Lath, A, Lauber, J, Leith, D, Lia, V, Liu, M, Liu, X, Loreti, M, Lu, A, Lynch, H, Ma, J, Mancinelli, G, Manly, S, Mantovani, G, Markiewicz, T, Maruyama, T, Masuda, H, Mazzucato, E, Mckemey, A, Meadows, B, Messner, R, Mockett, P, Moffeit, K, Moore, T, Muller, D, Nagamine, T, Narita, S, Nauenberg, U, Neal, H, Nussbaum, M, Ohnishi, Y, Oishi, N, Onoprienko, D, Osborne, L, Panvini, R, Park, C, Park, H, Pavel, T, Peruzzi, I, Piccolo, M, Piemontese, L, Pieroni, E, Pitts, K, Plano, R, Prepost, R, Prescott, C, Punkar, G, Quigley, J, Ratcliff, B, Reeves, T, Reidy, J, Reinertsen, P, Rensing, P, Rochester, L, Rowson, P, Russell, J, Saxton, O, Schall, T, Schindler, R, Schumm, B, Schwiening, J, Sen, S, Serbo, V, Shaevitz, M, Shank, J, Shapiro, G, Sherden, D, Shmakov, K, Simopoulos, C, Sinev, N, Smith, S, Smy, M, Snyder, J, Staengle, H, Stamer, P, Steiner, H, Steiner, R, Strauss, M, Su, D, Suekane, F, Sugiyama, A, Suzuki, S, Swartz, M, Szumilo, A, Takahashi, T, Taylor, F, Torrence, E, Trandafir, A, Turk, J, Usher, T, Va'Vra, J, Vannini, C, Vella, E, Venuti, J, Verdier, R, Verdini, P, Wagner, D, Wagner, S, Waite, A, Watts, S, Weidemann, A, Weiss, E, Whitaker, J, White, S, Wickens, F, Williams, D, Williams, S, Willocq, S, Wilson, R, Wisniewski, W, Woods, M, Word, G, Wyss, J, Yamamoto, R, Yamartino, J, Yang, X, Yashima, J, Yellin, S, Young, C, Yuta, H, Zapalac, G, Zdarko, R, and Zhou, J
- Subjects
Physics ,Particle physics ,Meson ,Physics::Instrumentation and Detectors ,Electron–positron annihilation ,Gluons ,Hadron ,FOS: Physical sciences ,General Physics and Astronomy ,Elementary particle ,High Energy Physics - Experiment ,Vertex (geometry) ,High Energy Physics - Experiment (hep-ex) ,Particle decay ,B meson ,High Energy Physics::Experiment ,Nuclear Experiment ,Boson - Abstract
We report a new measurement of Rb = Gamma(Z0->b-bbar) / Gamma(Z0->hadrons) using a double tag technique, where the b hemisphere selection is based on the reconstructed mass of the B hadron decay vertex. The measurement was performed using a sample of 130k hadronic Z0 events, collected with the SLD at the SLC. The method utilizes the 3-D vertexing abilities of the CCD pixel vertex detector and the small stable SLC beams to obtain a high b-tagging efficiency and purity. We obtain Rb=0.2142+/-0.0034(stat.)+/-0.0015(syst.)+/-0.0002(R_c)., 11 pages including 3 eps files
- Published
- 1998