Observation of B-meson semileptonic decays to noncharmed final states

R. Fulton; M. Hempstead; T. Jensen; D. R. Johnson; H. Kagan; R. Kass; F. Morrow; J. Whitmore; P. Wilson; W. Y. Chen; R. L. McIlwain; D. H. Miller; C. R. Ng; S. F. Schaffner; E. I. Shibata; W. M. Yao; K. Sparks; E. H. Thorndike; C. H. Wang; I. C. Brock; T. Ferguson; M. S. Alam; I. J. Kim; W. C. Li; X. C. Lou; C. R. Sun; P. N. Wang; M. I. Zoeller; D. Bortoletto; M. Goldberg; N. Horwitz; V. Jain; M. D. Mestayer; G. C. Moneti; V. Sharma; I. P.J. Shipsey; T. Skwarnicki; M. Thulasidas; S. E. Csorna; T. Letson; J. Alexander; M. Artuso; C. Bebek; K. Berkelman; D. G. Cassel; E. Cheu; D. M. Coffman; G. Crawford; J. W. Dewire; P. S. Drell

doi:10.1103/PhysRevLett.64.16

Observation of B-meson semileptonic decays to noncharmed final states

R. Fulton, M. Hempstead, T. Jensen, D. R. Johnson, H. Kagan, R. Kass, F. Morrow, J. Whitmore, P. Wilson, W. Y. Chen, R. L. McIlwain, D. H. Miller, C. R. Ng, S. F. Schaffner, E. I. Shibata, W. M. Yao, K. Sparks, E. H. Thorndike, C. H. Wang, I. C. BrockT. Ferguson, M. S. Alam, I. J. Kim, W. C. Li, X. C. Lou, C. R. Sun, P. N. Wang, M. I. Zoeller, D. Bortoletto, M. Goldberg, N. Horwitz, V. Jain, M. D. Mestayer, G. C. Moneti, V. Sharma, I. P.J. Shipsey, T. Skwarnicki, M. Thulasidas, S. E. Csorna, T. Letson, J. Alexander, M. Artuso, C. Bebek, K. Berkelman, D. G. Cassel, E. Cheu, D. M. Coffman, G. Crawford, J. W. Dewire, P. S. Drell

Physics and Astronomy (Twin Cities)

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Abstract

We report the first evidence of charmless semileptonic decays of B mesons. In the momentum interval 2.42.6 GeV/c where the background from bcl is negligible, the average of the measured ue and u partial branching ratios is Bub(2.4,2.6) =(1.80.40.3)×10-4. Inclusion of data from the interval 2.22.4 GeV/c, where the lepton yield is dominated by bcl, gives Bub(2.2,2.6) =(3.30.80.8)×10-4. Vub/Vcb depends on the theoretical model of bul decay and is approximately 0.1.

Original language	English (US)
Pages (from-to)	16-20
Number of pages	5
Journal	Physical review letters
Volume	64
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.64.16
State	Published - 1990

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Fulton, R., Hempstead, M., Jensen, T., Johnson, D. R., Kagan, H., Kass, R., Morrow, F., Whitmore, J., Wilson, P., Chen, W. Y., McIlwain, R. L., Miller, D. H., Ng, C. R., Schaffner, S. F., Shibata, E. I., Yao, W. M., Sparks, K., Thorndike, E. H., Wang, C. H., ... Drell, P. S. (1990). Observation of B-meson semileptonic decays to noncharmed final states. Physical review letters, 64(1), 16-20. https://doi.org/10.1103/PhysRevLett.64.16

Fulton, R, Hempstead, M, Jensen, T, Johnson, DR, Kagan, H, Kass, R, Morrow, F, Whitmore, J, Wilson, P, Chen, WY, McIlwain, RL, Miller, DH, Ng, CR, Schaffner, SF, Shibata, EI, Yao, WM, Sparks, K, Thorndike, EH, Wang, CH, Brock, IC, Ferguson, T, Alam, MS, Kim, IJ, Li, WC, Lou, XC, Sun, CR, Wang, PN, Zoeller, MI, Bortoletto, D, Goldberg, M, Horwitz, N, Jain, V, Mestayer, MD, Moneti, GC, Sharma, V, Shipsey, IPJ, Skwarnicki, T, Thulasidas, M, Csorna, SE, Letson, T, Alexander, J, Artuso, M, Bebek, C, Berkelman, K, Cassel, DG, Cheu, E, Coffman, DM, Crawford, G, Dewire, JW & Drell, PS 1990, 'Observation of B-meson semileptonic decays to noncharmed final states', Physical review letters, vol. 64, no. 1, pp. 16-20. https://doi.org/10.1103/PhysRevLett.64.16

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title = "Observation of B-meson semileptonic decays to noncharmed final states",

abstract = "We report the first evidence of charmless semileptonic decays of B mesons. In the momentum interval 2.42.6 GeV/c where the background from bcl is negligible, the average of the measured ue and u partial branching ratios is Bub(2.4,2.6) =(1.80.40.3)×10-4. Inclusion of data from the interval 2.22.4 GeV/c, where the lepton yield is dominated by bcl, gives Bub(2.2,2.6) =(3.30.80.8)×10-4. Vub/Vcb depends on the theoretical model of bul decay and is approximately 0.1.",

author = "R. Fulton and M. Hempstead and T. Jensen and Johnson, {D. R.} and H. Kagan and R. Kass and F. Morrow and J. Whitmore and P. Wilson and Chen, {W. Y.} and McIlwain, {R. L.} and Miller, {D. H.} and Ng, {C. R.} and Schaffner, {S. F.} and Shibata, {E. I.} and Yao, {W. M.} and K. Sparks and Thorndike, {E. H.} and Wang, {C. H.} and Brock, {I. C.} and T. Ferguson and Alam, {M. S.} and Kim, {I. J.} and Li, {W. C.} and Lou, {X. C.} and Sun, {C. R.} and Wang, {P. N.} and Zoeller, {M. I.} and D. Bortoletto and M. Goldberg and N. Horwitz and V. Jain and Mestayer, {M. D.} and Moneti, {G. C.} and V. Sharma and Shipsey, {I. P.J.} and T. Skwarnicki and M. Thulasidas and Csorna, {S. E.} and T. Letson and J. Alexander and M. Artuso and C. Bebek and K. Berkelman and Cassel, {D. G.} and E. Cheu and Coffman, {D. M.} and G. Crawford and Dewire, {J. W.} and Drell, {P. S.}",

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T1 - Observation of B-meson semileptonic decays to noncharmed final states

AU - Fulton, R.

AU - Hempstead, M.

AU - Jensen, T.

AU - Johnson, D. R.

AU - Kagan, H.

AU - Kass, R.

AU - Morrow, F.

AU - Whitmore, J.

AU - Wilson, P.

AU - Chen, W. Y.

AU - McIlwain, R. L.

AU - Miller, D. H.

AU - Ng, C. R.

AU - Schaffner, S. F.

AU - Shibata, E. I.

AU - Yao, W. M.

AU - Sparks, K.

AU - Thorndike, E. H.

AU - Wang, C. H.

AU - Brock, I. C.

AU - Ferguson, T.

AU - Alam, M. S.

AU - Kim, I. J.

AU - Li, W. C.

AU - Lou, X. C.

AU - Sun, C. R.

AU - Wang, P. N.

AU - Zoeller, M. I.

AU - Bortoletto, D.

AU - Goldberg, M.

AU - Horwitz, N.

AU - Jain, V.

AU - Mestayer, M. D.

AU - Moneti, G. C.

AU - Sharma, V.

AU - Shipsey, I. P.J.

AU - Skwarnicki, T.

AU - Thulasidas, M.

AU - Csorna, S. E.

AU - Letson, T.

AU - Alexander, J.

AU - Artuso, M.

AU - Bebek, C.

AU - Berkelman, K.

AU - Cassel, D. G.

AU - Cheu, E.

AU - Coffman, D. M.

AU - Crawford, G.

AU - Dewire, J. W.

AU - Drell, P. S.

PY - 1990

Y1 - 1990

N2 - We report the first evidence of charmless semileptonic decays of B mesons. In the momentum interval 2.42.6 GeV/c where the background from bcl is negligible, the average of the measured ue and u partial branching ratios is Bub(2.4,2.6) =(1.80.40.3)×10-4. Inclusion of data from the interval 2.22.4 GeV/c, where the lepton yield is dominated by bcl, gives Bub(2.2,2.6) =(3.30.80.8)×10-4. Vub/Vcb depends on the theoretical model of bul decay and is approximately 0.1.

AB - We report the first evidence of charmless semileptonic decays of B mesons. In the momentum interval 2.42.6 GeV/c where the background from bcl is negligible, the average of the measured ue and u partial branching ratios is Bub(2.4,2.6) =(1.80.40.3)×10-4. Inclusion of data from the interval 2.22.4 GeV/c, where the lepton yield is dominated by bcl, gives Bub(2.2,2.6) =(3.30.80.8)×10-4. Vub/Vcb depends on the theoretical model of bul decay and is approximately 0.1.

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U2 - 10.1103/PhysRevLett.64.16

DO - 10.1103/PhysRevLett.64.16

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AN - SCOPUS:0001842718

SN - 0031-9007

VL - 64

SP - 16

EP - 20

JO - Physical review letters

JF - Physical review letters

IS - 1

ER -

Observation of B-meson semileptonic decays to noncharmed final states

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