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Measurements of Rb with impact parameters and displaced vertices

Abe, K. and Abt, I. and Ahn, C. J. and Akagi, T. and Allen, N. J. and Ash, W. W. and Aston, D. and Baird, K. G. and Baltay, C. and Band, H. R. and Barakat, M. B. and Baranko, G. and Bardon, O. and Barklow, T. and Bazarko, A. O. and Ben-David, R. and Benvenuti, A. C. and Bienz, T. and Bilei, G. M. and Bisello, D. and Blaylock, G. and Bogart, J. R. and Bolton, T. and Bower, G. R. and Brau, J. E. and Breidenbach, M. and Bugg, W. M. and Burke, D. and Burnett, T. H. and Burrows, P. N. and Busza, W. and Calcaterra, A. and Caldwell, D. O. and Calloway, D. and Camanzi, B. and Carpinelli, M. and Cassell, R. and Castaldi, R. and Castro, A. and Cavalli-Sforza, M. and Church, E. and Cohn, H. O. and Coller, J. A. and Cook, V. and Cotton, R. and Cowan, R. F. and Coyne, D. G. and D'Oliviera, A. and Damerell, C. J. S. and Daoudi, M. and De Sangro, R. and De Simone, P. and Dell’Orso, R. and Dima, M. and Du, P. Y. C. and Dubois, R. and Eisenstein, B. I. and Elia, R. and Etzion, E. and Falciai, D. and Fero, M. J. and Frey, R. and Furuno, K. and Gillman, T. and Gladding, G. and Gonzalez, S. and Hallewell, G. D. and Hart, E. L. and Hasegawa, Y. and Hedges, S. and Hertzbach, S. S. and Hildreth, M. D. and Huber, J. and Huffer, M. E. and Hughes, E. W. and Hwang, H. and Iwasaki, Y. and Jackson, D. J. and Jacques, P. and Jaros, J. and Johnson, A. S. and Johnson, J. R. and Johnson, R. A. and Junk, T. and Kajikawa, R. and Kalelkar, M. and Kang, H. J. and Karliner, I. and Kawahara, H. and Kendall, H. W. and Kim, Y. and King, M. E. and King, R. and Kofler, R. R. and Krishna, N. M. and Kroeger, R. S. and Labs, J. F. and Langston, M. and Lath, A. and Lauber, J. A. and Leith, D. W. G. and Liu, M. X. and Liu, X. and Loreti, M. and Lu, A. and Lynch, H. L. and Ma, J. and Mancinelli, G. and Manly, S. and Mantovani, G. and Markiewicz, T. W. and Maruyama, T. and Massetti, R. and Masuda, H. and Mazzucato, E. and McKemey, A. K. and Meadows, B. T. and Messner, R. and Mockett, P. M. and Moffeit, K. C. and Mours, B. and Müller, G. and Nussbaum, M. and Ohnishi, Y. and Osborne, L. S. and Panvini, R. S. and Park, H. and Pavel, T. J. and Peruzzi, I. and Piccolo, M. and Piemontese, L. and Pieroni, E. and Pitts, K. T. and Plano, R. J. and Prepost, R. and Prescott, C. Y. and Punkar, G. D. and Quigley, J. and Ratcliff, B. N. and Reeves, T. W. and Reidy, J. and Rensing, P. E. and Rochester, L. S. and Rothberg, J. E. and Rowson, P. C. and Russell, J. J. and Saxton, O. H. and Schaffner, S. F. and Schalk, T. and Schindler, R. H. and Schneekloth, U. and Schumm, B. A. and Seiden, A. and Sen, S. and Serbo, V. V. and Shaevitz, M. H. and Shank, J. T. and Shapiro, G. and Shapiro, S. L. and Sherden, D. J. and Shmakov, K. D. and Simopoulos, C. and Sinev, N. B. and Smith, S. R. and Snyder, J. A. and Stamer, P. and Steiner, H. and Steiner, R. and Strauss, M. G. and Su, D. and Suekane, F. and Sugiyama, A. and Suzuki, S. and Swartz, M. and Szumilo, A. and Takahashi, T. and Taylor, F. E. and Torrence, E. and Turk, J. D. and Usher, T. and Va'vra, J. and Vannini, C. and Vella, E. and Venuti, J. P. and Verdier, R. and Verdini, P. G. and Wagner, S. R. and Waite, A. P. and Watts, S. J. and Weidemann, A. W. and Weiss, E. R. and Whitaker, J. S. and White, S. L. and Wickens, F. J. and Williams, D. A. and Williams, D. C. and Williams, S. H. and Willocq, S. and Wilson, R. J. and Wisniewski, W. J. and Woods, M. and Word, G. B. and Wyss, J. and Yamamoto, R. K. and Yamartino, J. M. and Yang, X. and Yellin, S. J. and Young, C. C. and Yuta, H. and Zapalac, G. and Zdarko, R. W. and Zeitlin, C. and Zhang, Z. and Zhou, J. (1996) Measurements of Rb with impact parameters and displaced vertices. Physical Review D, 53 (3). pp. 1023-1038. ISSN 2470-0010. doi:10.1103/PhysRevD.53.1023.

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We present measurements of Rb using the SLD at the SLC. The analyses use 2D and 3D impact parameter tags and a displaced 3D vertex tag which all exploit the small size and stability of the e+e- interaction point and the precision 3D CCD pixel vertex detector to achieve high bb¯-tagging efficiencies and purities. The combined measurement yields Rb=0.229±0.011 and is consistent with standard model predictions.

Item Type:Article
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URLURL TypeDescription
Huber, J.0000-0003-0073-0321
Johnson, J. R.0000-0002-5586-4901
Willocq, S.0000-0002-4120-1453
Additional Information:© 1996 The American Physical Society. Received 11 May 1995. We thank the staff of the SLC for their efforts in the challenging task of bringing submicrometer-sized stable colliding beams to the SLD for a unique physics program. We thank the technical staff at the collaborating institutions for their valiant support in the construction and maintenance of the SLD. This work was supported by Department of Energy Contracts Nos. DE-FG02-91ER40676 (BU), DEFG03-92ER40701 (CIT), DE-FG03-91ER40618 (UCSB), DE-FG03-92ER40689 (UCSC), DE-FG03-93ER40788 (CSU), DE-FG02-91ER40672 (Colorado), DE-FG02-91ER40677 (Illinois), DE-AC03-76SF00098 (LBL), DE-FG02-92ER40715 (Massachusetts), DE-AC02-76ER03069 (MIT), DE-FG06-85ER40224 (Oregon), DE-AC03-76SF00515 (SLAC), DE-FG05-91ER40627 (Tennessee), DE-AC02-76ER00881 (Wisconsin), DE-FG02-92ER40704 (Yale); National Science Foundation grants: PHY-91-13428 (UCSC), PHY-8921320 (Columbia), PHY-92-04239 (Cincinnati), PHY-88-17930 (Rutgers), PHY-88-19316 (Vanderbilt), PHY-92-03212 (Washington); the UK Science and Engineering Research Council (Brunel and RAL); the Istituto Nazionale di Fisica Nuclear of Italy (Bologna, Ferrara, Frascati, Pisa, Padova, Perugia); and the Japan-US Cooperative Research Project on High Energy Physics (Nagoya, Tohoku).
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-91ER40676
Department of Energy (DOE)DE-FG03-92ER40701
Department of Energy (DOE)DE-FG03-91ER40618
Department of Energy (DOE)DE-FG03-92ER40689
Department of Energy (DOE)DE-FG03-93ER40788
Department of Energy (DOE)DE-FG02-91ER40672
Department of Energy (DOE)DE-FG02-91ER40677
Department of Energy (DOE)DE-AC03-76SF00098
Department of Energy (DOE)DE-FG02-92ER40715
Department of Energy (DOE)DE-AC02-76ER03069
Department of Energy (DOE)DE-FG06-85ER40224
Department of Energy (DOE)DE-AC03-76SF00515
Department of Energy (DOE)DE-FG05-91ER40627
Department of Energy (DOE)DE-AC02-76ER00881
Department of Energy (DOE)DE-FG02-92ER40704
Science and Engineering Research Council (SERC)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Japan-US Cooperative Research Project on High Energy PhysicsUNSPECIFIED
Issue or Number:3
Record Number:CaltechAUTHORS:ABEprd96a
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:13157
Deposited By: Tony Diaz
Deposited On:06 Feb 2009 00:58
Last Modified:08 Nov 2021 22:35

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