Measurements of semileptonic branching fractions of B mesons at the '(4S) resonance

S. Henderson; K. Kinoshita; F. Pipkin; M. Procario; M. Saulnier; R. Wilson; J. Wolinski; D. Xiao; R. Ammar; P. Baringer; D. Coppage; R. Davis; P. Haas; M. Kelly; N. Kwak; Ha Lam; S. Ro; Y. Kubota; J. K. Nelson; D. Perticone; R. Poling; S. Schrenk; G. Crawford; R. Fulton; T. Jensen; D. R. Johnson; H. Kagan; R. Kass; R. Malchow; F. Morrow; J. Whitmore; P. Wilson; D. Bortoletto; D. Brown; J. Dominick; R. L. McIlwain; D. H. Miller; M. Modesitt; S. F. Schaffner; E. I. Shibata; I. P.J. Shipsey; M. Battle; H. Kroha; K. Sparks; E. H. Thorndike; C. H. Wang; M. S. Alam; I. J. Kim; W. C. Li; B. Nemati; V. Romero; C. R. Sun; P. N. Wang; M. M. Zoeller; M. Goldberg; T. Haupt; N. Horwitz; V. Jain; Rosemary Kennett; M. D. Mestayer; G. C. Moneti; Y. Rozen; P. Rubin; T. Skwarnicki; S. Stone; M. Thusalidas; W. M. Yao; G. Zhu; A. V. Barnes; J. Bartelt; S. E. Csorna; T. Letson; J. Alexander; M. Artuso; C. Bebek; K. Berkelman; D. Besson; T. Browder; D. G. Cassel; E. Cheu; D. M. Coffman; J. W. DeWire; P. S. Drell; R. Ehrlich; R. S. Galik; M. Garcia-Sciveres; B. Geiser; B. Gittelman; S. W. Gray; A. M. Halling; D. L. Hartill; B. K. Heltsley; K. Honscheid; J. Kandaswamy; N. Katayama; R. Kowalewski; D. L. Kreinick

doi:10.1103/PhysRevD.45.2212

Measurements of semileptonic branching fractions of B mesons at the '(4S) resonance

S. Henderson, K. Kinoshita, F. Pipkin, M. Procario, M. Saulnier, R. Wilson, J. Wolinski, D. Xiao, R. Ammar, P. Baringer, D. Coppage, R. Davis, P. Haas, M. Kelly, N. Kwak, Ha Lam, S. Ro, Y. Kubota, J. K. Nelson, D. PerticoneR. Poling, S. Schrenk, G. Crawford, R. Fulton, T. Jensen, D. R. Johnson, H. Kagan, R. Kass, R. Malchow, F. Morrow, J. Whitmore, P. Wilson, D. Bortoletto, D. Brown, J. Dominick, R. L. McIlwain, D. H. Miller, M. Modesitt, S. F. Schaffner, E. I. Shibata, I. P.J. Shipsey, M. Battle, H. Kroha, K. Sparks, E. H. Thorndike, C. H. Wang, M. S. Alam, I. J. Kim, W. C. Li, B. Nemati, V. Romero, C. R. Sun, P. N. Wang, M. M. Zoeller, M. Goldberg, T. Haupt, N. Horwitz, V. Jain, Rosemary Kennett, M. D. Mestayer, G. C. Moneti, Y. Rozen, P. Rubin, T. Skwarnicki, S. Stone, M. Thusalidas, W. M. Yao, G. Zhu, A. V. Barnes, J. Bartelt, S. E. Csorna, T. Letson, J. Alexander, M. Artuso, C. Bebek, K. Berkelman, D. Besson, T. Browder, D. G. Cassel, E. Cheu, D. M. Coffman, J. W. DeWire, P. S. Drell, R. Ehrlich, R. S. Galik, M. Garcia-Sciveres, B. Geiser, B. Gittelman, S. W. Gray, A. M. Halling, D. L. Hartill, B. K. Heltsley, K. Honscheid, J. Kandaswamy, N. Katayama, R. Kowalewski, D. L. Kreinick

Physics and Astronomy (Twin Cities)

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Abstract

We report new measurements of semileptonic branching fractions of B mesons produced at the '(4S) resonance determined by fitting the inclusive electron and muon momentum spectra to different theoretical models. Using B(B»'X"-») to denote the average of the semileptonic branching fractions for B decay to electrons and muons, we obtain B(B»'X"-»)= (10.5±0.2±0.4)% using the refined free-quark model of Altarelli et al., and B(B»'X"-»)=(11.2±0.3±0.4)% using a modified version of the form-factor model of Isgur et al., in which the D**"-» contribution is allowed to float in the fit. The average of these two results is B(B»'X"-»)=(10.8±0. 2±0.4±0.4)%, where the errors are statistical, systematic uncertainties in the measurement, and systematic uncertainties associated with the theoretical models, respectively. Semileptonic branching fractions as low as this are difficult to accommodate in theoretical models where hadronic B-meson decays arise only from spectator diagrams. We use dilepton yields to limit the uncertainty in the semileptonic branching fraction due to the possible existence of non-BB» decays of the '(4S). In addition, we tag neutral B mesons using the decays B»0'D*+- and B»0'D*+"-» to obtain the first direct measurement of semileptonic branching fractions for neutral B mesons; the average of the electron and muon results for neutral B mesons is B(B»0'X"-»)=(9.9±3.0±0.9)%.

Original language	English (US)
Pages (from-to)	2212-2231
Number of pages	20
Journal	Physical Review D
Volume	45
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.45.2212
State	Published - 1992

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Henderson, S., Kinoshita, K., Pipkin, F., Procario, M., Saulnier, M., Wilson, R., Wolinski, J., Xiao, D., Ammar, R., Baringer, P., Coppage, D., Davis, R., Haas, P., Kelly, M., Kwak, N., Lam, H., Ro, S., Kubota, Y., Nelson, J. K., ... Kreinick, D. L. (1992). Measurements of semileptonic branching fractions of B mesons at the '(4S) resonance. Physical Review D, 45(7), 2212-2231. https://doi.org/10.1103/PhysRevD.45.2212

Henderson, S, Kinoshita, K, Pipkin, F, Procario, M, Saulnier, M, Wilson, R, Wolinski, J, Xiao, D, Ammar, R, Baringer, P, Coppage, D, Davis, R, Haas, P, Kelly, M, Kwak, N, Lam, H, Ro, S, Kubota, Y, Nelson, JK, Perticone, D, Poling, R, Schrenk, S, Crawford, G, Fulton, R, Jensen, T, Johnson, DR, Kagan, H, Kass, R, Malchow, R, Morrow, F, Whitmore, J, Wilson, P, Bortoletto, D, Brown, D, Dominick, J, McIlwain, RL, Miller, DH, Modesitt, M, Schaffner, SF, Shibata, EI, Shipsey, IPJ, Battle, M, Kroha, H, Sparks, K, Thorndike, EH, Wang, CH, Alam, MS, Kim, IJ, Li, WC, Nemati, B, Romero, V, Sun, CR, Wang, PN, Zoeller, MM, Goldberg, M, Haupt, T, Horwitz, N, Jain, V, Kennett, R, Mestayer, MD, Moneti, GC, Rozen, Y, Rubin, P, Skwarnicki, T, Stone, S, Thusalidas, M, Yao, WM, Zhu, G, Barnes, AV, Bartelt, J, Csorna, SE, Letson, T, Alexander, J, Artuso, M, Bebek, C, Berkelman, K, Besson, D, Browder, T, Cassel, DG, Cheu, E, Coffman, DM, DeWire, JW, Drell, PS, Ehrlich, R, Galik, RS, Garcia-Sciveres, M, Geiser, B, Gittelman, B, Gray, SW, Halling, AM, Hartill, DL, Heltsley, BK, Honscheid, K, Kandaswamy, J, Katayama, N, Kowalewski, R & Kreinick, DL 1992, 'Measurements of semileptonic branching fractions of B mesons at the '(4S) resonance', Physical Review D, vol. 45, no. 7, pp. 2212-2231. https://doi.org/10.1103/PhysRevD.45.2212

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title = "Measurements of semileptonic branching fractions of B mesons at the '(4S) resonance",

abstract = "We report new measurements of semileptonic branching fractions of B mesons produced at the '(4S) resonance determined by fitting the inclusive electron and muon momentum spectra to different theoretical models. Using B(B»'X{"}-») to denote the average of the semileptonic branching fractions for B decay to electrons and muons, we obtain B(B»'X{"}-»)= (10.5±0.2±0.4)% using the refined free-quark model of Altarelli et al., and B(B»'X{"}-»)=(11.2±0.3±0.4)% using a modified version of the form-factor model of Isgur et al., in which the D**{"}-» contribution is allowed to float in the fit. The average of these two results is B(B»'X{"}-»)=(10.8±0. 2±0.4±0.4)%, where the errors are statistical, systematic uncertainties in the measurement, and systematic uncertainties associated with the theoretical models, respectively. Semileptonic branching fractions as low as this are difficult to accommodate in theoretical models where hadronic B-meson decays arise only from spectator diagrams. We use dilepton yields to limit the uncertainty in the semileptonic branching fraction due to the possible existence of non-BB» decays of the '(4S). In addition, we tag neutral B mesons using the decays B»0'D*+- and B»0'D*+{"}-» to obtain the first direct measurement of semileptonic branching fractions for neutral B mesons; the average of the electron and muon results for neutral B mesons is B(B»0'X{"}-»)=(9.9±3.0±0.9)%.",

author = "S. Henderson and K. Kinoshita and F. Pipkin and M. Procario and M. Saulnier and R. Wilson and J. Wolinski and D. Xiao and R. Ammar and P. Baringer and D. Coppage and R. Davis and P. Haas and M. Kelly and N. Kwak and Ha Lam and S. Ro and Y. Kubota and Nelson, {J. K.} and D. Perticone and R. Poling and S. Schrenk and G. Crawford and R. Fulton and T. Jensen and Johnson, {D. R.} and H. Kagan and R. Kass and R. Malchow and F. Morrow and J. Whitmore and P. Wilson and D. Bortoletto and D. Brown and J. Dominick and McIlwain, {R. L.} and Miller, {D. H.} and M. Modesitt and Schaffner, {S. F.} and Shibata, {E. I.} and Shipsey, {I. P.J.} and M. Battle and H. Kroha and K. Sparks and Thorndike, {E. H.} and Wang, {C. H.} and Alam, {M. S.} and Kim, {I. J.} and Li, {W. C.} and B. Nemati and V. Romero and Sun, {C. R.} and Wang, {P. N.} and Zoeller, {M. M.} and M. Goldberg and T. Haupt and N. Horwitz and V. Jain and Rosemary Kennett and Mestayer, {M. D.} and Moneti, {G. C.} and Y. Rozen and P. Rubin and T. Skwarnicki and S. Stone and M. Thusalidas and Yao, {W. M.} and G. Zhu and Barnes, {A. V.} and J. Bartelt and Csorna, {S. E.} and T. Letson and J. Alexander and M. Artuso and C. Bebek and K. Berkelman and D. Besson and T. Browder and Cassel, {D. G.} and E. Cheu and Coffman, {D. M.} and DeWire, {J. W.} and Drell, {P. S.} and R. Ehrlich and Galik, {R. S.} and M. Garcia-Sciveres and B. Geiser and B. Gittelman and Gray, {S. W.} and Halling, {A. M.} and Hartill, {D. L.} and Heltsley, {B. K.} and K. Honscheid and J. Kandaswamy and N. Katayama and R. Kowalewski and Kreinick, {D. L.}",

year = "1992",

doi = "10.1103/PhysRevD.45.2212",

language = "English (US)",

volume = "45",

pages = "2212--2231",

journal = "Physical Review D",

issn = "0556-2821",

publisher = "American Institute of Physics Publising LLC",

number = "7",

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TY - JOUR

T1 - Measurements of semileptonic branching fractions of B mesons at the '(4S) resonance

AU - Henderson, S.

AU - Kinoshita, K.

AU - Pipkin, F.

AU - Procario, M.

AU - Saulnier, M.

AU - Wilson, R.

AU - Wolinski, J.

AU - Xiao, D.

AU - Ammar, R.

AU - Baringer, P.

AU - Coppage, D.

AU - Davis, R.

AU - Haas, P.

AU - Kelly, M.

AU - Kwak, N.

AU - Lam, Ha

AU - Ro, S.

AU - Kubota, Y.

AU - Nelson, J. K.

AU - Perticone, D.

AU - Poling, R.

AU - Schrenk, S.

AU - Crawford, G.

AU - Fulton, R.

AU - Jensen, T.

AU - Johnson, D. R.

AU - Kagan, H.

AU - Kass, R.

AU - Malchow, R.

AU - Morrow, F.

AU - Whitmore, J.

AU - Wilson, P.

AU - Bortoletto, D.

AU - Brown, D.

AU - Dominick, J.

AU - McIlwain, R. L.

AU - Miller, D. H.

AU - Modesitt, M.

AU - Schaffner, S. F.

AU - Shibata, E. I.

AU - Shipsey, I. P.J.

AU - Battle, M.

AU - Kroha, H.

AU - Sparks, K.

AU - Thorndike, E. H.

AU - Wang, C. H.

AU - Alam, M. S.

AU - Kim, I. J.

AU - Li, W. C.

AU - Nemati, B.

AU - Romero, V.

AU - Sun, C. R.

AU - Wang, P. N.

AU - Zoeller, M. M.

AU - Goldberg, M.

AU - Haupt, T.

AU - Horwitz, N.

AU - Jain, V.

AU - Kennett, Rosemary

AU - Mestayer, M. D.

AU - Moneti, G. C.

AU - Rozen, Y.

AU - Rubin, P.

AU - Skwarnicki, T.

AU - Stone, S.

AU - Thusalidas, M.

AU - Yao, W. M.

AU - Zhu, G.

AU - Barnes, A. V.

AU - Bartelt, J.

AU - Csorna, S. E.

AU - Letson, T.

AU - Alexander, J.

AU - Artuso, M.

AU - Bebek, C.

AU - Berkelman, K.

AU - Besson, D.

AU - Browder, T.

AU - Cassel, D. G.

AU - Cheu, E.

AU - Coffman, D. M.

AU - DeWire, J. W.

AU - Drell, P. S.

AU - Ehrlich, R.

AU - Galik, R. S.

AU - Garcia-Sciveres, M.

AU - Geiser, B.

AU - Gittelman, B.

AU - Gray, S. W.

AU - Halling, A. M.

AU - Hartill, D. L.

AU - Heltsley, B. K.

AU - Honscheid, K.

AU - Kandaswamy, J.

AU - Katayama, N.

AU - Kowalewski, R.

AU - Kreinick, D. L.

PY - 1992

Y1 - 1992

N2 - We report new measurements of semileptonic branching fractions of B mesons produced at the '(4S) resonance determined by fitting the inclusive electron and muon momentum spectra to different theoretical models. Using B(B»'X"-») to denote the average of the semileptonic branching fractions for B decay to electrons and muons, we obtain B(B»'X"-»)= (10.5±0.2±0.4)% using the refined free-quark model of Altarelli et al., and B(B»'X"-»)=(11.2±0.3±0.4)% using a modified version of the form-factor model of Isgur et al., in which the D**"-» contribution is allowed to float in the fit. The average of these two results is B(B»'X"-»)=(10.8±0. 2±0.4±0.4)%, where the errors are statistical, systematic uncertainties in the measurement, and systematic uncertainties associated with the theoretical models, respectively. Semileptonic branching fractions as low as this are difficult to accommodate in theoretical models where hadronic B-meson decays arise only from spectator diagrams. We use dilepton yields to limit the uncertainty in the semileptonic branching fraction due to the possible existence of non-BB» decays of the '(4S). In addition, we tag neutral B mesons using the decays B»0'D*+- and B»0'D*+"-» to obtain the first direct measurement of semileptonic branching fractions for neutral B mesons; the average of the electron and muon results for neutral B mesons is B(B»0'X"-»)=(9.9±3.0±0.9)%.

AB - We report new measurements of semileptonic branching fractions of B mesons produced at the '(4S) resonance determined by fitting the inclusive electron and muon momentum spectra to different theoretical models. Using B(B»'X"-») to denote the average of the semileptonic branching fractions for B decay to electrons and muons, we obtain B(B»'X"-»)= (10.5±0.2±0.4)% using the refined free-quark model of Altarelli et al., and B(B»'X"-»)=(11.2±0.3±0.4)% using a modified version of the form-factor model of Isgur et al., in which the D**"-» contribution is allowed to float in the fit. The average of these two results is B(B»'X"-»)=(10.8±0. 2±0.4±0.4)%, where the errors are statistical, systematic uncertainties in the measurement, and systematic uncertainties associated with the theoretical models, respectively. Semileptonic branching fractions as low as this are difficult to accommodate in theoretical models where hadronic B-meson decays arise only from spectator diagrams. We use dilepton yields to limit the uncertainty in the semileptonic branching fraction due to the possible existence of non-BB» decays of the '(4S). In addition, we tag neutral B mesons using the decays B»0'D*+- and B»0'D*+"-» to obtain the first direct measurement of semileptonic branching fractions for neutral B mesons; the average of the electron and muon results for neutral B mesons is B(B»0'X"-»)=(9.9±3.0±0.9)%.

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UR - http://www.scopus.com/inward/citedby.url?scp=4244118263&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.45.2212

DO - 10.1103/PhysRevD.45.2212

M3 - Article

AN - SCOPUS:4244118263

SN - 0556-2821

VL - 45

SP - 2212

EP - 2231

JO - Physical Review D

JF - Physical Review D

IS - 7

ER -

Measurements of semileptonic branching fractions of B mesons at the '(4S) resonance

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