Measurement of the<i>B</i>¯→<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">D</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">*</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math><i>l</i>ν¯ branching fractions and ‖<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="italic">V</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">c</mml:

Barish, B. C.; Chadha, M.; Chan, S.; Cowen, D. F.; Eigen, G.; Miller, J. S.; O’Grady, C. P.; Urheim, J.; Weinstein, A. J.; Acosta, D.; Athanas, M.; Masek, G.; Paar, H. P.; Gronberg, J.; Kutschke, R.; Menary, S.; Morrison, R. J.; Nakanishi, S.; Nelson, H. N.; Nelson, T. K.; Qiao, C. F.; Richman, J. D.; Rýd, A.; Tajima, H.; Sperka, D.; Witherell, M. S.; Procario, M.; Balest, R.; Cho, K.; Daoudi, M.; Ford, W. T.; Johnson, D. R.; Lingel, K.; Lohner, M.; Rankin, P.; Smith, J. G.; Alexander, J.; Bebek, C.; Berkelman, K.; Bloom, K.; Browder, T. E.; Cassel, D. G.; Cho, H. A.; Coffman, D. M.; Crowcroft, D. S.; Drell, P. S.; Ehrlich, R.; Gaidarev, P.; Galik, R. S.; Garcia-Sciveres, M.; Geiser, B.; Gittelman, B.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Jones, C. D.; Jones, S. L.; Kandaswamy, J.; Katayama, N.; Kim, P. C.; Kreinick, D. L.; Ludwig, G. S.; Masui, J.; Mevissen, J.; Mistry, N. B.; Ng, C. R.; Nordberg, E.; Patterson, J. R.; Peterson, D.; Riley, D.; Salman, S.; Sapper, M.; Würthwein, F.; Avery, P.; Freyberger, A.; Rodriguez, J. L.; Yang, S. B.; Yelton, J.; Cinabro, D.; Henderson, S.; Liu, T.; Saulnier, M.; Wilson, Richard; Yamamoto, H.; Bergfeld, T.; Eisenstein, B. I.; Gollin, G. D.; Ong, B.; Palmer, M.; Selen, M.; Thaler, J. J.; Edwards, K. W.; Ogg, M.; Bellerive, A.; Britton, D.; Hyatt, E. R.F.; MacFarlane, D. B.; Patel, P. M.; Spaan, B.; Sadoff, A. J.; Ammar, R.; Ball, S.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Copty, N.; Davis, R.; Hancock, N.; Kelly, M.; Kotov, S.; Kravchenko, I.; Kwak, N.; Lam, H.; Kubota, Y.; Lattery, M.; Momayezi, M.; Nelson, J. K.; Patton, S.; Perticone, D.; Poling, R.; Savinov, V.; Schrenk, S.; Wang, R.; Alam, M. S.; Kim, I. J.; Nemati, B.; Ling, Z.; O’Neill, J. J.; Severini, H.; Sun, C. R.; Wappler, F. R.; Crawford, G.; Daubenmier, C. M.; Fulton, R.; Fujino, D.; Gan, K. K.; Honscheid, K.; Kagan, H.; Kass, R.; Lee, J.; Malchow, R.; Skovpen, Yu. I.; Sung, M.; White, C.; Zoeller, M. M.; Butler, F.; Fu, X.; Kalbfleisch, G.; Ross, W. R.; Skubic, P.; Wood, M.; Fast, J. E.; McIlwain, R. L.; Miao, T.; Miller, D. H.; Modesitt, M.; Payne, D. J.; Shibata, E. I.; Shipsey, I. P. J.; Wang, P. N.; Battle, M.; Ernst, J.; Gibbons, L. K.; Kwon, Y. J.; Roberts, S.; Thorndike, E. H.; Wang, C. H.; Dominick, J.; Lambrecht, M.; Sanghera, S.; Shelkov, V.; Skwarnicki, T.; Stroynowski, R.; Volobouev, I.; Wei, G.; Zadorozhny, P.; Artuso, M.; Goldberg, M.; He, D.; Horwitz, N.; Kennett, R.; Mountain, R.; Moneti, G. C.; Muheim, F.; Mukhin, Y.; Playfer, S.; Rozen, Y.; Stone, S.; Thulasidas, M.; Vasseur, G.; Xing, X.; Zhu, G.; Bartelt, J.; Csorna, S. E.; Egyed, Z.; Jain, V.; Gibaut, D.; Kinoshita, K.

doi:10.1103/physrevd.51.1014

Cited by 112 publications

(74 citation statements)

References 38 publications

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“…The analysis takes advantage of the kinematic constraints available at the Υ(4S) resonance, where the data were collected, to suppress backgrounds, help distinguish D * ℓν from similar modes such as D 1 ℓν, and provide superb resolution on the decay kinematics. This analysis is the first since a previous CLEO result [18] to use not onlyB 0 → D * + ℓν decays, but also B − → D * 0 ℓν decays [19]. Consistency between these two modes is a valuable cross-check of our results.…”

Section: Introductionmentioning

confidence: 78%

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Determination of theB¯→Dlν¯
Adam¹,
Alexander²,
Bebek³
et al. 2003
Phys. Rev. D*
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In the Standard Model, the charged current of the weak interaction is governed by a unitary quark mixing matrix that also leads to CP violation. Measurement of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements is essential to searches for new physics, either through the structure of the CKM matrix, or a departure from unitarity. We determine the CKM matrix element |V cb | using a sample of 3 × 10 6 BB events in the CLEO detector at the Cornell Electron Storage Ring. We determine the yield of reconstructedB 0 → D * + ℓν and B − → D * 0 ℓν decays as a function of w, the boost of the D * in the B rest frame, and from this we obtain the differential decay rate dΓ/dw. By extrapolating dΓ/dw to w = 1, the kinematic end point at which the D * is at rest relative to the B, we extract the product |V cb |F(1), where F(1) is the form factor at w = 1. We find |V cb |F(1) = 0.0431 ± 0.0013(stat.) ± 0.0018(syst.). We combine |V cb |F(1) with theoretical results for F(1) to determine |V cb | = 0.0469 ± 0.0014(stat.) ± 0.0020(syst.) ± 0.0018(theo.). We also integrate the differential decay rate over w to obtain B(B 0 → D * + ℓν) = (6.09 ± 0.19 ± 0.40)% and B(B − → D * 0 ℓν) = (6.50 ± 0.20 ± 0.43)%.2

show abstract

Section: Introductionmentioning

confidence: 78%

“…3 Specifically, in [18] we used a linear form factor h A1 (w) = h A1 (1) 1 − ρ 2 A1 (w − 1) , and R 1 = R 2 = 1.…”

Section: A Background Uncertaintiesmentioning

confidence: 99%

Determination of theB¯→Dlν¯
Adam¹,
Alexander²,
Bebek³
et al. 2003
Phys. Rev. D*
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40
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“…Current data forB → D ( * ) ℓν decay spectra are available from CLEO [43], ALEPH [44], OPAL [45], and DELPHI [46]; older data exists from ARGUS [47]. Some progress has been made towards measuring individual form factors inB → D * ℓν [48].…”

Section: Experimental Fitsmentioning

confidence: 99%

Precision corrections to dispersive bounds on form factors

1997

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We present precision corrections to dispersion relation bounds on form factors in bottom hadron semileptonic decays and analyze their effects on parameterizations derived from these bounds. We incorporate QCD two-loop and nonperturbative corrections to the two-point correlator, consider form factors whose contribution to decay rates is suppressed by lepton mass, and implement more realistic estimates of truncation errors associated with the parameterizations. We include higher resonances in the hadronic sum that, * boyd@fermi.phys.cmu.edu † bgrinstein@ucsd.edu ‡ rlebed@ucsd.edu 1 together with heavy quark symmetry relations near zero recoil, further tighten the sum rule bounds. Utilizing all these improvements, we show that each of the six form factors inB → Dℓν andB → D * ℓν can be described with 3% or smaller precision using only the overall normalization and one unknown parameter. A similar one-coefficient parameterization of one of the Λ b → Λ c ℓν form factors, together with heavy quark symmetry relations valid to order 1/m 2 , describes the differential baryon decay rate in terms of one unknown parameter and the phenomenologically interesting quantityΛWe discuss the validity of slope-curvature relations derived by Caprini and Neubert, and present weaker, corrected relations. Finally, we present sample fits of current experimentalB → D * ℓν andB → Dℓν data to the improved one-parameter expansion.

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“…We make a least squares fit to CLEO [2], ARGUS [3], and ALEPH [4] data using |V cb | and our two basis function parameters as variables, and present our results. Reliability of the method is discussed in Sec.…”

Section: Introductionmentioning

confidence: 99%

“…Progress towards this goal has been realized by the development of heavy quark symmetry [1], which relates and normalizes theB → D * lν andB → Dlν form factors in the context of the 1 M expansion, where M is the heavy quark mass. This normalization has been used [2][3][4] to extract the value of the CKM parameter |V cb | by extrapolating the measured form factor to zero recoil, where the normalization is predicted.…”

Section: Introductionmentioning

confidence: 99%

Model-independent extraction of |Vcb| using dispersion relations

1995

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We present a method for parametrizing heavy meson semileptonic form factors using dispersion relations, and from it produce a two-parameter description of the B → B elastic form factor. We use heavy quark symmetry to relate this function toB → D * lν form factors, and extract |V cb | = 0.037−0.002 from experimental data with a least squares fit. Our method eliminates model-dependent uncertainties inherent in choosing a parametrization for the extrapolation of the differential decay rate to threshold. The method also allows a description ofB → Dlν form factors accurate to 1% in terms of two parameters.April 1995 *

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Measurement of theB¯→D*lν¯ branching fractions and ‖Vc

Cited by 112 publications

References 38 publications

Determination of theB¯→Dlν¯
Adam¹,
Alexander²,
Bebek³
et al. 2003
Phys. Rev. D*
Self Cite
40
3
25
0
View full text Add to dashboard Cite

Determination of theB¯→Dlν¯
Adam¹,
Alexander²,
Bebek³
et al. 2003
Phys. Rev. D*
Self Cite
40
3
25
0
View full text Add to dashboard Cite

Precision corrections to dispersive bounds on form factors

Model-independent extraction of |Vcb| using dispersion relations

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Measurement of theB¯→D*lν¯ branching fractions and ‖Vc

Cited by 112 publications

References 38 publications

Determination of theB¯→D*lν¯Adam1, Alexander2, Bebek3 et al. 2003Phys. Rev. DSelf Cite403250View full textAdd to dashboardCite

Determination of theB¯→D*lν¯Adam1, Alexander2, Bebek3 et al. 2003Phys. Rev. DSelf Cite403250View full textAdd to dashboardCite

Precision corrections to dispersive bounds on form factors

Model-independent extraction of |Vcb| using dispersion relations

Contact Info

Product

Resources

About

Determination of theB¯→Dlν¯
Adam¹,
Alexander²,
Bebek³
et al. 2003
Phys. Rev. D*
Self Cite
40
3
25
0
View full text Add to dashboard Cite

Determination of theB¯→Dlν¯
Adam¹,
Alexander²,
Bebek³
et al. 2003
Phys. Rev. D*
Self Cite
40
3
25
0
View full text Add to dashboard Cite