Measurement of the B semileptonic branching fraction with lepton tags

B. Barish, M. Chadha, S. Chan, G. Eigen, J. S. Miller, C. O'Grady, J. Urheim, A. J. Weinstein, F. Würthwein, D. M. Asner, M. Athanas, Daniel Bliss, W. S. Brower, G. Masek, H. P. Paar, J. Gronberg, C. M. Korte, R. Kutschke, S. Menary, R. J. MorrisonS. Nakanishi, H. N. Nelson, T. K. Nelson, C. Qiao, J. D. Richman, D. Roberts, A. Ryd, H. Tajima, M. S. Witherell, R. Balest, K. Cho, W. T. Ford, M. Lohner, H. Park, P. Rankin, J. G. Smith, J. P. Alexander, C. Bebek, B. E. Berger, K. Berkelman, K. Bloom, T. E. Browder, D. G. Cassel, H. A. Cho, D. M. Coffman, D. S. Crowcroft, M. Dickson, P. S. Drell, D. J. Dumas, R. Ehrlich, R. Elia, P. Gaidarev, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, S. Henderson, C. D. Jones, S. L. Jones, J. Kandaswamy, N. Katayama, P. C. Kim, D. L. Kreinick, T. Lee, Y. Liu, G. S. Ludwig, J. Masui, J. Mevissen, N. B. Mistry, C. R. Ng, E. Nordberg, J. R. Patterson, D. Peterson, D. Riley, A. Soffer, P. Avery, A. Freyberger, K. Lingel, C. Prescott, J. Rodriguez, S. Yang, J. Yelton, G. Brandenburg, D. Cinabro, T. Liu, M. Saulnier, R. Wilson, H. Yamamoto, T. Bergfeld, B. I. Eisenstein, J. Ernst, G. E. Gladding, G. D. Gollin, M. Palmer, M. Selen, J. J. Thaler, K. W. Edwards, K. W. McLean, M. Ogg, A. Bellerive, D. I. Britton, E. R F Hyatt, R. Janicek, D. B. MacFarlane, P. M. Patel, B. Spaan, A. J. Sadoff, R. Ammar, P. Baringer, A. Bean, D. Besson, D. Coppage, N. Copty, R. Davis, N. Hancock, S. Kotov, I. Kravchenko, N. Kwak, Y. Kubota, M. Lattery, J. K. Nelson, S. Patton, R. Poling, T. Riehle, V. Savinov, R. Wang, M. S. Alam, I. J. Kim, Z. Ling, A. H. Mahmood, J. J. O'Neill, H. Severini, C. R. Sun, S. Timm, F. Wappler, J. E. Duboscq, R. Fulton, D. Fujino, K. K. Gan, K. Honscheid, H. Kagan, R. Kass, J. Lee, M. Sung, C. White, A. Wolf, M. M. Zoeller, X. Fu, B. Nemati, W. R. Ross, P. Skubic, M. Wood, M. Bishai, J. Fast, E. Gerndt, J. W. Hinson, T. Miao, D. H. Miller, M. Modesitt, E. I. Shibata, I. P J Shipsey, P. N. Wang, L. Gibbons, S. D. Johnson, Y. Kwon, S. Roberts, E. H. Thorndike, T. E. Coan, J. Dominick, V. Fadeyev, I. Korolkov, M. Lambrecht, S. Sanghera, V. Shelkov, T. Skwarnicki, R. Stroynowski, I. Volobouev, G. Wei, M. Artuso, M. Gao, M. Goldberg, D. He, N. Horwitz, S. Kopp, G. C. Moneti, R. Mountain, F. Muheim, Y. Mukhin, S. Playfer, S. Stone, X. Xing, J. Bartelt, S. E. Csorna, V. Jain, S. Marka, D. Gibaut, K. Kinoshita, P. Pomianowski, S. Schrenk

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

We have used the CLEO II detector and 2.06 fb -1 of Y(4S) data to measure the B-meson semileptonic branching fraction. The B → Xev momentum spectrum was obtained over nearly the full momentum range by using charge and kinematic correlations in events with a high-momentum lepton tag and an additional electron. We find B(B → Xev) = (10.49 ± 0.17 ± 0.43)%, with overall systematic uncertainties less than those of untagged single-lepton measurements. We use this result to calculate the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element Vcb and to set an upper limit on the fraction of Y(4S) decays to final states other than BB̄.

Original languageEnglish (US)
Pages (from-to)1570-1574
Number of pages5
JournalPhysical Review Letters
Volume76
Issue number10
StatePublished - Mar 4 1996
Externally publishedYes

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leptons
momentum
kinematics
mesons
detectors
decay
matrices
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Barish, B., Chadha, M., Chan, S., Eigen, G., Miller, J. S., O'Grady, C., ... Schrenk, S. (1996). Measurement of the B semileptonic branching fraction with lepton tags. Physical Review Letters, 76(10), 1570-1574.

Measurement of the B semileptonic branching fraction with lepton tags. / Barish, B.; Chadha, M.; Chan, S.; Eigen, G.; Miller, J. S.; O'Grady, C.; Urheim, J.; Weinstein, A. J.; Würthwein, F.; Asner, D. M.; Athanas, M.; Bliss, Daniel; Brower, W. S.; Masek, G.; Paar, H. P.; Gronberg, J.; Korte, C. M.; Kutschke, R.; Menary, S.; Morrison, R. J.; Nakanishi, S.; Nelson, H. N.; Nelson, T. K.; Qiao, C.; Richman, J. D.; Roberts, D.; Ryd, A.; Tajima, H.; Witherell, M. S.; Balest, R.; Cho, K.; Ford, W. T.; Lohner, M.; Park, H.; Rankin, P.; Smith, J. G.; Alexander, J. P.; Bebek, C.; Berger, B. E.; Berkelman, K.; Bloom, K.; Browder, T. E.; Cassel, D. G.; Cho, H. A.; Coffman, D. M.; Crowcroft, D. S.; Dickson, M.; Drell, P. S.; Dumas, D. J.; Ehrlich, R.; Elia, R.; Gaidarev, P.; Gittelman, B.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Henderson, S.; Jones, C. D.; Jones, S. L.; Kandaswamy, J.; Katayama, N.; Kim, P. C.; Kreinick, D. L.; Lee, T.; Liu, Y.; Ludwig, G. S.; Masui, J.; Mevissen, J.; Mistry, N. B.; Ng, C. R.; Nordberg, E.; Patterson, J. R.; Peterson, D.; Riley, D.; Soffer, A.; Avery, P.; Freyberger, A.; Lingel, K.; Prescott, C.; Rodriguez, J.; Yang, S.; Yelton, J.; Brandenburg, G.; Cinabro, D.; Liu, T.; Saulnier, M.; Wilson, R.; Yamamoto, H.; Bergfeld, T.; Eisenstein, B. I.; Ernst, J.; Gladding, G. E.; Gollin, G. D.; Palmer, M.; Selen, M.; Thaler, J. J.; Edwards, K. W.; McLean, K. W.; Ogg, M.; Bellerive, A.; Britton, D. I.; Hyatt, E. R F; Janicek, R.; MacFarlane, D. B.; Patel, P. M.; Spaan, B.; Sadoff, A. J.; Ammar, R.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Copty, N.; Davis, R.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, N.; Kubota, Y.; Lattery, M.; Nelson, J. K.; Patton, S.; Poling, R.; Riehle, T.; Savinov, V.; Wang, R.; Alam, M. S.; Kim, I. J.; Ling, Z.; Mahmood, A. H.; O'Neill, J. J.; Severini, H.; Sun, C. R.; Timm, S.; Wappler, F.; Duboscq, J. E.; Fulton, R.; Fujino, D.; Gan, K. K.; Honscheid, K.; Kagan, H.; Kass, R.; Lee, J.; Sung, M.; White, C.; Wolf, A.; Zoeller, M. M.; Fu, X.; Nemati, B.; Ross, W. R.; Skubic, P.; Wood, M.; Bishai, M.; Fast, J.; Gerndt, E.; Hinson, J. W.; Miao, T.; Miller, D. H.; Modesitt, M.; Shibata, E. I.; Shipsey, I. P J; Wang, P. N.; Gibbons, L.; Johnson, S. D.; Kwon, Y.; Roberts, S.; Thorndike, E. H.; Coan, T. E.; Dominick, J.; Fadeyev, V.; Korolkov, I.; Lambrecht, M.; Sanghera, S.; Shelkov, V.; Skwarnicki, T.; Stroynowski, R.; Volobouev, I.; Wei, G.; Artuso, M.; Gao, M.; Goldberg, M.; He, D.; Horwitz, N.; Kopp, S.; Moneti, G. C.; Mountain, R.; Muheim, F.; Mukhin, Y.; Playfer, S.; Stone, S.; Xing, X.; Bartelt, J.; Csorna, S. E.; Jain, V.; Marka, S.; Gibaut, D.; Kinoshita, K.; Pomianowski, P.; Schrenk, S.

In: Physical Review Letters, Vol. 76, No. 10, 04.03.1996, p. 1570-1574.

Research output: Contribution to journalArticle

Barish, B, Chadha, M, Chan, S, Eigen, G, Miller, JS, O'Grady, C, Urheim, J, Weinstein, AJ, Würthwein, F, Asner, DM, Athanas, M, Bliss, D, Brower, WS, Masek, G, Paar, HP, Gronberg, J, Korte, CM, Kutschke, R, Menary, S, Morrison, RJ, Nakanishi, S, Nelson, HN, Nelson, TK, Qiao, C, Richman, JD, Roberts, D, Ryd, A, Tajima, H, Witherell, MS, Balest, R, Cho, K, Ford, WT, Lohner, M, Park, H, Rankin, P, Smith, JG, Alexander, JP, Bebek, C, Berger, BE, Berkelman, K, Bloom, K, Browder, TE, Cassel, DG, Cho, HA, Coffman, DM, Crowcroft, DS, Dickson, M, Drell, PS, Dumas, DJ, Ehrlich, R, Elia, R, Gaidarev, P, Gittelman, B, Gray, SW, Hartill, DL, Heltsley, BK, Henderson, S, Jones, CD, Jones, SL, Kandaswamy, J, Katayama, N, Kim, PC, Kreinick, DL, Lee, T, Liu, Y, Ludwig, GS, Masui, J, Mevissen, J, Mistry, NB, Ng, CR, Nordberg, E, Patterson, JR, Peterson, D, Riley, D, Soffer, A, Avery, P, Freyberger, A, Lingel, K, Prescott, C, Rodriguez, J, Yang, S, Yelton, J, Brandenburg, G, Cinabro, D, Liu, T, Saulnier, M, Wilson, R, Yamamoto, H, Bergfeld, T, Eisenstein, BI, Ernst, J, Gladding, GE, Gollin, GD, Palmer, M, Selen, M, Thaler, JJ, Edwards, KW, McLean, KW, Ogg, M, Bellerive, A, Britton, DI, Hyatt, ERF, Janicek, R, MacFarlane, DB, Patel, PM, Spaan, B, Sadoff, AJ, Ammar, R, Baringer, P, Bean, A, Besson, D, Coppage, D, Copty, N, Davis, R, Hancock, N, Kotov, S, Kravchenko, I, Kwak, N, Kubota, Y, Lattery, M, Nelson, JK, Patton, S, Poling, R, Riehle, T, Savinov, V, Wang, R, Alam, MS, Kim, IJ, Ling, Z, Mahmood, AH, O'Neill, JJ, Severini, H, Sun, CR, Timm, S, Wappler, F, Duboscq, JE, Fulton, R, Fujino, D, Gan, KK, Honscheid, K, Kagan, H, Kass, R, Lee, J, Sung, M, White, C, Wolf, A, Zoeller, MM, Fu, X, Nemati, B, Ross, WR, Skubic, P, Wood, M, Bishai, M, Fast, J, Gerndt, E, Hinson, JW, Miao, T, Miller, DH, Modesitt, M, Shibata, EI, Shipsey, IPJ, Wang, PN, Gibbons, L, Johnson, SD, Kwon, Y, Roberts, S, Thorndike, EH, Coan, TE, Dominick, J, Fadeyev, V, Korolkov, I, Lambrecht, M, Sanghera, S, Shelkov, V, Skwarnicki, T, Stroynowski, R, Volobouev, I, Wei, G, Artuso, M, Gao, M, Goldberg, M, He, D, Horwitz, N, Kopp, S, Moneti, GC, Mountain, R, Muheim, F, Mukhin, Y, Playfer, S, Stone, S, Xing, X, Bartelt, J, Csorna, SE, Jain, V, Marka, S, Gibaut, D, Kinoshita, K, Pomianowski, P & Schrenk, S 1996, 'Measurement of the B semileptonic branching fraction with lepton tags', Physical Review Letters, vol. 76, no. 10, pp. 1570-1574.
Barish B, Chadha M, Chan S, Eigen G, Miller JS, O'Grady C et al. Measurement of the B semileptonic branching fraction with lepton tags. Physical Review Letters. 1996 Mar 4;76(10):1570-1574.
Barish, B. ; Chadha, M. ; Chan, S. ; Eigen, G. ; Miller, J. S. ; O'Grady, C. ; Urheim, J. ; Weinstein, A. J. ; Würthwein, F. ; Asner, D. M. ; Athanas, M. ; Bliss, Daniel ; Brower, W. S. ; Masek, G. ; Paar, H. P. ; Gronberg, J. ; Korte, C. M. ; Kutschke, R. ; Menary, S. ; Morrison, R. J. ; Nakanishi, S. ; Nelson, H. N. ; Nelson, T. K. ; Qiao, C. ; Richman, J. D. ; Roberts, D. ; Ryd, A. ; Tajima, H. ; Witherell, M. S. ; Balest, R. ; Cho, K. ; Ford, W. T. ; Lohner, M. ; Park, H. ; Rankin, P. ; Smith, J. G. ; Alexander, J. P. ; Bebek, C. ; Berger, B. E. ; Berkelman, K. ; Bloom, K. ; Browder, T. E. ; Cassel, D. G. ; Cho, H. A. ; Coffman, D. M. ; Crowcroft, D. S. ; Dickson, M. ; Drell, P. S. ; Dumas, D. J. ; Ehrlich, R. ; Elia, R. ; Gaidarev, P. ; Gittelman, B. ; Gray, S. W. ; Hartill, D. L. ; Heltsley, B. K. ; Henderson, S. ; Jones, C. D. ; Jones, S. L. ; Kandaswamy, J. ; Katayama, N. ; Kim, P. C. ; Kreinick, D. L. ; Lee, T. ; Liu, Y. ; Ludwig, G. S. ; Masui, J. ; Mevissen, J. ; Mistry, N. B. ; Ng, C. R. ; Nordberg, E. ; Patterson, J. R. ; Peterson, D. ; Riley, D. ; Soffer, A. ; Avery, P. ; Freyberger, A. ; Lingel, K. ; Prescott, C. ; Rodriguez, J. ; Yang, S. ; Yelton, J. ; Brandenburg, G. ; Cinabro, D. ; Liu, T. ; Saulnier, M. ; Wilson, R. ; Yamamoto, H. ; Bergfeld, T. ; Eisenstein, B. I. ; Ernst, J. ; Gladding, G. E. ; Gollin, G. D. ; Palmer, M. ; Selen, M. ; Thaler, J. J. ; Edwards, K. W. ; McLean, K. W. ; Ogg, M. ; Bellerive, A. ; Britton, D. I. ; Hyatt, E. R F ; Janicek, R. ; MacFarlane, D. B. ; Patel, P. M. ; Spaan, B. ; Sadoff, A. J. ; Ammar, R. ; Baringer, P. ; Bean, A. ; Besson, D. ; Coppage, D. ; Copty, N. ; Davis, R. ; Hancock, N. ; Kotov, S. ; Kravchenko, I. ; Kwak, N. ; Kubota, Y. ; Lattery, M. ; Nelson, J. K. ; Patton, S. ; Poling, R. ; Riehle, T. ; Savinov, V. ; Wang, R. ; Alam, M. S. ; Kim, I. J. ; Ling, Z. ; Mahmood, A. H. ; O'Neill, J. J. ; Severini, H. ; Sun, C. R. ; Timm, S. ; Wappler, F. ; Duboscq, J. E. ; Fulton, R. ; Fujino, D. ; Gan, K. K. ; Honscheid, K. ; Kagan, H. ; Kass, R. ; Lee, J. ; Sung, M. ; White, C. ; Wolf, A. ; Zoeller, M. M. ; Fu, X. ; Nemati, B. ; Ross, W. R. ; Skubic, P. ; Wood, M. ; Bishai, M. ; Fast, J. ; Gerndt, E. ; Hinson, J. W. ; Miao, T. ; Miller, D. H. ; Modesitt, M. ; Shibata, E. I. ; Shipsey, I. P J ; Wang, P. N. ; Gibbons, L. ; Johnson, S. D. ; Kwon, Y. ; Roberts, S. ; Thorndike, E. H. ; Coan, T. E. ; Dominick, J. ; Fadeyev, V. ; Korolkov, I. ; Lambrecht, M. ; Sanghera, S. ; Shelkov, V. ; Skwarnicki, T. ; Stroynowski, R. ; Volobouev, I. ; Wei, G. ; Artuso, M. ; Gao, M. ; Goldberg, M. ; He, D. ; Horwitz, N. ; Kopp, S. ; Moneti, G. C. ; Mountain, R. ; Muheim, F. ; Mukhin, Y. ; Playfer, S. ; Stone, S. ; Xing, X. ; Bartelt, J. ; Csorna, S. E. ; Jain, V. ; Marka, S. ; Gibaut, D. ; Kinoshita, K. ; Pomianowski, P. ; Schrenk, S. / Measurement of the B semileptonic branching fraction with lepton tags. In: Physical Review Letters. 1996 ; Vol. 76, No. 10. pp. 1570-1574.
@article{edf7042c09fa40159f0a501993c211c7,
title = "Measurement of the B semileptonic branching fraction with lepton tags",
abstract = "We have used the CLEO II detector and 2.06 fb -1 of Y(4S) data to measure the B-meson semileptonic branching fraction. The B → Xev momentum spectrum was obtained over nearly the full momentum range by using charge and kinematic correlations in events with a high-momentum lepton tag and an additional electron. We find B(B → Xev) = (10.49 ± 0.17 ± 0.43){\%}, with overall systematic uncertainties less than those of untagged single-lepton measurements. We use this result to calculate the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element Vcb and to set an upper limit on the fraction of Y(4S) decays to final states other than BB̄.",
author = "B. Barish and M. Chadha and S. Chan and G. Eigen and Miller, {J. S.} and C. O'Grady and J. Urheim and Weinstein, {A. J.} and F. W{\"u}rthwein and Asner, {D. M.} and M. Athanas and Daniel Bliss and Brower, {W. S.} and G. Masek and Paar, {H. P.} and J. Gronberg and Korte, {C. M.} and R. Kutschke and S. Menary and Morrison, {R. J.} and S. Nakanishi and Nelson, {H. N.} and Nelson, {T. K.} and C. Qiao and Richman, {J. D.} and D. Roberts and A. Ryd and H. Tajima and Witherell, {M. S.} and R. Balest and K. Cho and Ford, {W. T.} and M. Lohner and H. Park and P. Rankin and Smith, {J. G.} and Alexander, {J. P.} and C. Bebek and Berger, {B. E.} and K. Berkelman and K. Bloom and Browder, {T. E.} and Cassel, {D. G.} and Cho, {H. A.} and Coffman, {D. M.} and Crowcroft, {D. S.} and M. Dickson and Drell, {P. S.} and Dumas, {D. J.} and R. Ehrlich and R. Elia and P. Gaidarev and B. Gittelman and Gray, {S. W.} and Hartill, {D. L.} and Heltsley, {B. K.} and S. Henderson and Jones, {C. D.} and Jones, {S. L.} and J. Kandaswamy and N. Katayama and Kim, {P. C.} and Kreinick, {D. L.} and T. Lee and Y. Liu and Ludwig, {G. S.} and J. Masui and J. Mevissen and Mistry, {N. B.} and Ng, {C. R.} and E. Nordberg and Patterson, {J. R.} and D. Peterson and D. Riley and A. Soffer and P. Avery and A. Freyberger and K. Lingel and C. Prescott and J. Rodriguez and S. Yang and J. Yelton and G. Brandenburg and D. Cinabro and T. Liu and M. Saulnier and R. Wilson and H. Yamamoto and T. Bergfeld and Eisenstein, {B. I.} and J. Ernst and Gladding, {G. E.} and Gollin, {G. D.} and M. Palmer and M. Selen and Thaler, {J. J.} and Edwards, {K. W.} and McLean, {K. W.} and M. Ogg and A. Bellerive and Britton, {D. I.} and Hyatt, {E. R F} and R. Janicek and MacFarlane, {D. B.} and Patel, {P. M.} and B. Spaan and Sadoff, {A. J.} and R. Ammar and P. Baringer and A. Bean and D. Besson and D. Coppage and N. Copty and R. Davis and N. Hancock and S. Kotov and I. Kravchenko and N. Kwak and Y. Kubota and M. Lattery and Nelson, {J. K.} and S. Patton and R. Poling and T. Riehle and V. Savinov and R. Wang and Alam, {M. S.} and Kim, {I. J.} and Z. Ling and Mahmood, {A. H.} and O'Neill, {J. J.} and H. Severini and Sun, {C. R.} and S. Timm and F. Wappler and Duboscq, {J. E.} and R. Fulton and D. Fujino and Gan, {K. K.} and K. Honscheid and H. Kagan and R. Kass and J. Lee and M. Sung and C. White and A. Wolf and Zoeller, {M. M.} and X. Fu and B. Nemati and Ross, {W. R.} and P. Skubic and M. Wood and M. Bishai and J. Fast and E. Gerndt and Hinson, {J. W.} and T. Miao and Miller, {D. H.} and M. Modesitt and Shibata, {E. I.} and Shipsey, {I. P J} and Wang, {P. N.} and L. Gibbons and Johnson, {S. D.} and Y. Kwon and S. Roberts and Thorndike, {E. H.} and Coan, {T. E.} and J. Dominick and V. Fadeyev and I. Korolkov and M. Lambrecht and S. Sanghera and V. Shelkov and T. Skwarnicki and R. Stroynowski and I. Volobouev and G. Wei and M. Artuso and M. Gao and M. Goldberg and D. He and N. Horwitz and S. Kopp and Moneti, {G. C.} and R. Mountain and F. Muheim and Y. Mukhin and S. Playfer and S. Stone and X. Xing and J. Bartelt and Csorna, {S. E.} and V. Jain and S. Marka and D. Gibaut and K. Kinoshita and P. Pomianowski and S. Schrenk",
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pages = "1570--1574",
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TY - JOUR

T1 - Measurement of the B semileptonic branching fraction with lepton tags

AU - Barish, B.

AU - Chadha, M.

AU - Chan, S.

AU - Eigen, G.

AU - Miller, J. S.

AU - O'Grady, C.

AU - Urheim, J.

AU - Weinstein, A. J.

AU - Würthwein, F.

AU - Asner, D. M.

AU - Athanas, M.

AU - Bliss, Daniel

AU - Brower, W. S.

AU - Masek, G.

AU - Paar, H. P.

AU - Gronberg, J.

AU - Korte, C. M.

AU - Kutschke, R.

AU - Menary, S.

AU - Morrison, R. J.

AU - Nakanishi, S.

AU - Nelson, H. N.

AU - Nelson, T. K.

AU - Qiao, C.

AU - Richman, J. D.

AU - Roberts, D.

AU - Ryd, A.

AU - Tajima, H.

AU - Witherell, M. S.

AU - Balest, R.

AU - Cho, K.

AU - Ford, W. T.

AU - Lohner, M.

AU - Park, H.

AU - Rankin, P.

AU - Smith, J. G.

AU - Alexander, J. P.

AU - Bebek, C.

AU - Berger, B. E.

AU - Berkelman, K.

AU - Bloom, K.

AU - Browder, T. E.

AU - Cassel, D. G.

AU - Cho, H. A.

AU - Coffman, D. M.

AU - Crowcroft, D. S.

AU - Dickson, M.

AU - Drell, P. S.

AU - Dumas, D. J.

AU - Ehrlich, R.

AU - Elia, R.

AU - Gaidarev, P.

AU - Gittelman, B.

AU - Gray, S. W.

AU - Hartill, D. L.

AU - Heltsley, B. K.

AU - Henderson, S.

AU - Jones, C. D.

AU - Jones, S. L.

AU - Kandaswamy, J.

AU - Katayama, N.

AU - Kim, P. C.

AU - Kreinick, D. L.

AU - Lee, T.

AU - Liu, Y.

AU - Ludwig, G. S.

AU - Masui, J.

AU - Mevissen, J.

AU - Mistry, N. B.

AU - Ng, C. R.

AU - Nordberg, E.

AU - Patterson, J. R.

AU - Peterson, D.

AU - Riley, D.

AU - Soffer, A.

AU - Avery, P.

AU - Freyberger, A.

AU - Lingel, K.

AU - Prescott, C.

AU - Rodriguez, J.

AU - Yang, S.

AU - Yelton, J.

AU - Brandenburg, G.

AU - Cinabro, D.

AU - Liu, T.

AU - Saulnier, M.

AU - Wilson, R.

AU - Yamamoto, H.

AU - Bergfeld, T.

AU - Eisenstein, B. I.

AU - Ernst, J.

AU - Gladding, G. E.

AU - Gollin, G. D.

AU - Palmer, M.

AU - Selen, M.

AU - Thaler, J. J.

AU - Edwards, K. W.

AU - McLean, K. W.

AU - Ogg, M.

AU - Bellerive, A.

AU - Britton, D. I.

AU - Hyatt, E. R F

AU - Janicek, R.

AU - MacFarlane, D. B.

AU - Patel, P. M.

AU - Spaan, B.

AU - Sadoff, A. J.

AU - Ammar, R.

AU - Baringer, P.

AU - Bean, A.

AU - Besson, D.

AU - Coppage, D.

AU - Copty, N.

AU - Davis, R.

AU - Hancock, N.

AU - Kotov, S.

AU - Kravchenko, I.

AU - Kwak, N.

AU - Kubota, Y.

AU - Lattery, M.

AU - Nelson, J. K.

AU - Patton, S.

AU - Poling, R.

AU - Riehle, T.

AU - Savinov, V.

AU - Wang, R.

AU - Alam, M. S.

AU - Kim, I. J.

AU - Ling, Z.

AU - Mahmood, A. H.

AU - O'Neill, J. J.

AU - Severini, H.

AU - Sun, C. R.

AU - Timm, S.

AU - Wappler, F.

AU - Duboscq, J. E.

AU - Fulton, R.

AU - Fujino, D.

AU - Gan, K. K.

AU - Honscheid, K.

AU - Kagan, H.

AU - Kass, R.

AU - Lee, J.

AU - Sung, M.

AU - White, C.

AU - Wolf, A.

AU - Zoeller, M. M.

AU - Fu, X.

AU - Nemati, B.

AU - Ross, W. R.

AU - Skubic, P.

AU - Wood, M.

AU - Bishai, M.

AU - Fast, J.

AU - Gerndt, E.

AU - Hinson, J. W.

AU - Miao, T.

AU - Miller, D. H.

AU - Modesitt, M.

AU - Shibata, E. I.

AU - Shipsey, I. P J

AU - Wang, P. N.

AU - Gibbons, L.

AU - Johnson, S. D.

AU - Kwon, Y.

AU - Roberts, S.

AU - Thorndike, E. H.

AU - Coan, T. E.

AU - Dominick, J.

AU - Fadeyev, V.

AU - Korolkov, I.

AU - Lambrecht, M.

AU - Sanghera, S.

AU - Shelkov, V.

AU - Skwarnicki, T.

AU - Stroynowski, R.

AU - Volobouev, I.

AU - Wei, G.

AU - Artuso, M.

AU - Gao, M.

AU - Goldberg, M.

AU - He, D.

AU - Horwitz, N.

AU - Kopp, S.

AU - Moneti, G. C.

AU - Mountain, R.

AU - Muheim, F.

AU - Mukhin, Y.

AU - Playfer, S.

AU - Stone, S.

AU - Xing, X.

AU - Bartelt, J.

AU - Csorna, S. E.

AU - Jain, V.

AU - Marka, S.

AU - Gibaut, D.

AU - Kinoshita, K.

AU - Pomianowski, P.

AU - Schrenk, S.

PY - 1996/3/4

Y1 - 1996/3/4

N2 - We have used the CLEO II detector and 2.06 fb -1 of Y(4S) data to measure the B-meson semileptonic branching fraction. The B → Xev momentum spectrum was obtained over nearly the full momentum range by using charge and kinematic correlations in events with a high-momentum lepton tag and an additional electron. We find B(B → Xev) = (10.49 ± 0.17 ± 0.43)%, with overall systematic uncertainties less than those of untagged single-lepton measurements. We use this result to calculate the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element Vcb and to set an upper limit on the fraction of Y(4S) decays to final states other than BB̄.

AB - We have used the CLEO II detector and 2.06 fb -1 of Y(4S) data to measure the B-meson semileptonic branching fraction. The B → Xev momentum spectrum was obtained over nearly the full momentum range by using charge and kinematic correlations in events with a high-momentum lepton tag and an additional electron. We find B(B → Xev) = (10.49 ± 0.17 ± 0.43)%, with overall systematic uncertainties less than those of untagged single-lepton measurements. We use this result to calculate the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element Vcb and to set an upper limit on the fraction of Y(4S) decays to final states other than BB̄.

UR - http://www.scopus.com/inward/record.url?scp=0001101721&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001101721&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001101721

VL - 76

SP - 1570

EP - 1574

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 10

ER -