Determination of the B̄→D*ℓν̄ decay width and |Vcb|

N. E. Adam; J. P. Alexander; C. Bebek; B. E. Berger; K. Berkelman; F. Blanc; V. Boisvert; D. G. Cassel; P. S. Drell; J. E. Duboscq; K. M. Ecklund; R. Ehrlich; L. Gibbons; B. Gittelman; S. W. Gray; D. L. Hartill; B. K. Heltsley; L. Hsu; C. D. Jones; J. Kandaswamy; D. L. Kreinick; A. Magerkurth; H. Mahlke-Krüger; T. O. Meyer; N. B. Mistry; E. Nordberg; M. Palmer; J. R. Patterson; D. Peterson; J. Pivarski; D. Riley; A. J. Sadoff; H. Schwarthoff; M. R. Shepherd; J. G. Thayer; D. Urner; B. Valant-Spaight; G. Viehhauser; A. Warburton; M. Weinberger; S. B. Athar; P. Avery; H. Stoeck; J. Yelton; G. Brandenburg; A. Ershov; D. Y.J. Kim; R. Wilson; K. Benslama; B. I. Eisenstein; J. Ernst; G. D. Gollin; R. M. Hans; I. Karliner; N. Lowrey; M. A. Marsh; C. Plager; C. Sedlack; M. Selen; J. J. Thaler; J. Williams; K. W. Edwards; R. Ammar; D. Besson; X. Zhao; S. Anderson; V. V. Frolov; Y. Kubota; S. J. Lee; S. Z. Li; R. Poling; A. Smith; C. J. Stepaniak; J. Urheim; S. Ahmed; M. S. Alam; L. Jian; M. Saleem; F. Wappler; E. Eckhart; K. K. Gan; C. Gwon; T. Hart; K. Honscheid; D. Hufnagel; H. Kagan; R. Kass; T. K. Pedlar; J. B. Thayer; E. von Toerne; T. Wilksen; M. M. Zoeller; S. J. Richichi; H. Severini; P. Skubic; S. A. Dytman; S. Nam; V. Savinov; S. Chen; J. W. Hinson; J. Lee; D. H. Miller; V. Pavlunin; E. I. Shibata; I. P.J. Shipsey; D. Cronin-Hennessy; A. L. Lyon; C. S. Park; W. Park; E. H. Thorndike; T. E. Coan; Y. S. Gao; F. Liu; Y. Maravin; I. Narsky; R. Stroynowski; J. Ye; M. Artuso; C. Boulahouache; K. Bukin; E. Dambasuren; R. Mountain; T. Skwarnicki; S. Stone; J. C. Wang; A. H. Mahmood; S. E. Csorna; I. Danko; Z. Xu; G. Bonvicini; D. Cinabro; M. Dubrovin; S. McGee; A. Bornheim; E. Lipeles; S. P. Pappas; A. Shapiro; W. M. Sun; A. J. Weinstein; G. Masek; H. P. Paar; R. Mahapatra; R. A. Briere; G. P. Chen; T. Ferguson; G. Tatishvili; H. Vogel

doi:10.1103/PhysRevD.67.032001

Determination of the B̄→D*ℓν̄ decay width and |V_cb|

N. E. Adam, J. P. Alexander, C. Bebek, B. E. Berger, K. Berkelman, F. Blanc, V. Boisvert, D. G. Cassel, P. S. Drell, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, L. Hsu, C. D. Jones, J. KandaswamyD. L. Kreinick, A. Magerkurth, H. Mahlke-Krüger, T. O. Meyer, N. B. Mistry, E. Nordberg, M. Palmer, J. R. Patterson, D. Peterson, J. Pivarski, D. Riley, A. J. Sadoff, H. Schwarthoff, M. R. Shepherd, J. G. Thayer, D. Urner, B. Valant-Spaight, G. Viehhauser, A. Warburton, M. Weinberger, S. B. Athar, P. Avery, H. Stoeck, J. Yelton, G. Brandenburg, A. Ershov, D. Y.J. Kim, R. Wilson, K. Benslama, B. I. Eisenstein, J. Ernst, G. D. Gollin, R. M. Hans, I. Karliner, N. Lowrey, M. A. Marsh, C. Plager, C. Sedlack, M. Selen, J. J. Thaler, J. Williams, K. W. Edwards, R. Ammar, D. Besson, X. Zhao, S. Anderson, V. V. Frolov, Y. Kubota, S. J. Lee, S. Z. Li, R. Poling, A. Smith, C. J. Stepaniak, J. Urheim, S. Ahmed, M. S. Alam, L. Jian, M. Saleem, F. Wappler, E. Eckhart, K. K. Gan, C. Gwon, T. Hart, K. Honscheid, D. Hufnagel, H. Kagan, R. Kass, T. K. Pedlar, J. B. Thayer, E. von Toerne, T. Wilksen, M. M. Zoeller, S. J. Richichi, H. Severini, P. Skubic, S. A. Dytman, S. Nam, V. Savinov, S. Chen, J. W. Hinson, J. Lee, D. H. Miller, V. Pavlunin, E. I. Shibata, I. P.J. Shipsey, D. Cronin-Hennessy, A. L. Lyon, C. S. Park, W. Park, E. H. Thorndike, T. E. Coan, Y. S. Gao, F. Liu, Y. Maravin, I. Narsky, R. Stroynowski, J. Ye, M. Artuso, C. Boulahouache, K. Bukin, E. Dambasuren, R. Mountain, T. Skwarnicki, S. Stone, J. C. Wang, A. H. Mahmood, S. E. Csorna, I. Danko, Z. Xu, G. Bonvicini, D. Cinabro, M. Dubrovin, S. McGee, A. Bornheim, E. Lipeles, S. P. Pappas, A. Shapiro, W. M. Sun, A. J. Weinstein, G. Masek, H. P. Paar, R. Mahapatra, R. A. Briere, G. P. Chen, T. Ferguson, G. Tatishvili, H. Vogel

Research output: Contribution to journal › Article › peer-review

40 Scopus citations

Abstract

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 3×10⁶ BB̄ events in the CLEO detector at the Cornell Electron Storage Ring. We determine the yield of reconstructed B̄⁰ →D*⁺ ℓν̄ and B ^-D*⁰ℓν̄ 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(theor). We also integrate the differential decay rate over w to obtain B(B̄⁰→D *⁺ℓν̄ = (609±0.19±0.40)% and B(B ^-→D*⁰ℓν̄) = (6.50±0. 20±0.43)%.

Original language	English (US)
Article number	032001
Journal	Physical Review D
Volume	67
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.67.032001
State	Published - 2003
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevD.67.032001

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Adam, N. E., Alexander, J. P., Bebek, C., Berger, B. E., Berkelman, K., Blanc, F., Boisvert, V., Cassel, D. G., Drell, P. S., Duboscq, J. E., Ecklund, K. M., Ehrlich, R., Gibbons, L., Gittelman, B., Gray, S. W., Hartill, D. L., Heltsley, B. K., Hsu, L., Jones, C. D., ... Vogel, H. (2003). Determination of the B̄→D*ℓν̄ decay width and |V_cb|. Physical Review D, 67(3), Article 032001. https://doi.org/10.1103/PhysRevD.67.032001

@article{4b4e9dc1595244569d1b1bf64e19ddb7,

title = "Determination of the {\=B}→D*ℓ{\=ν} decay width and |Vcb|",

abstract = "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 |Vcb| using a sample of 3×106 B{\=B} events in the CLEO detector at the Cornell Electron Storage Ring. We determine the yield of reconstructed {\=B}0 →D*+ ℓ{\=ν} and B -D*0ℓ{\=ν} 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 |Vcb|ℱ(1), where ℱ(1) is the form factor at w=1. We find |Vcb|ℱ(1) = 0.0431±0.0013(stat) ±0.0018(syst). We combine |Vcb|ℱ(1) with theoretical results for ℱ(1) to determine |Vcb| = 0.0469±0.0014(stat) ±0.0020(syst)±0.0018(theor). We also integrate the differential decay rate over w to obtain B({\=B}0→D *+ℓ{\=ν} = (609±0.19±0.40)% and B(B -→D*0ℓ{\=ν}) = (6.50±0. 20±0.43)%.",

author = "Adam, {N. E.} and Alexander, {J. P.} and C. Bebek and Berger, {B. E.} and K. Berkelman and F. Blanc and V. Boisvert and Cassel, {D. G.} and Drell, {P. S.} and Duboscq, {J. E.} and Ecklund, {K. M.} and R. Ehrlich and L. Gibbons and B. Gittelman and Gray, {S. W.} and Hartill, {D. L.} and Heltsley, {B. K.} and L. Hsu and Jones, {C. D.} and J. Kandaswamy and Kreinick, {D. L.} and A. Magerkurth and H. Mahlke-Kr{\"u}ger and Meyer, {T. O.} and Mistry, {N. B.} and E. Nordberg and M. Palmer and Patterson, {J. R.} and D. Peterson and J. Pivarski and D. Riley and Sadoff, {A. J.} and H. Schwarthoff and Shepherd, {M. R.} and Thayer, {J. G.} and D. Urner and B. Valant-Spaight and G. Viehhauser and A. Warburton and M. Weinberger and Athar, {S. B.} and P. Avery and H. Stoeck and J. Yelton and G. Brandenburg and A. Ershov and Kim, {D. Y.J.} and R. Wilson and K. Benslama and Eisenstein, {B. I.} and J. Ernst and Gollin, {G. D.} and Hans, {R. M.} and I. Karliner and N. Lowrey and Marsh, {M. A.} and C. Plager and C. Sedlack and M. Selen and Thaler, {J. J.} and J. Williams and Edwards, {K. W.} and R. Ammar and D. Besson and X. Zhao and S. Anderson and Frolov, {V. V.} and Y. Kubota and Lee, {S. J.} and Li, {S. Z.} and R. Poling and A. Smith and Stepaniak, {C. J.} and J. Urheim and S. Ahmed and Alam, {M. S.} and L. Jian and M. Saleem and F. Wappler and E. Eckhart and Gan, {K. K.} and C. Gwon and T. Hart and K. Honscheid and D. Hufnagel and H. Kagan and R. Kass and Pedlar, {T. K.} and Thayer, {J. B.} and {von Toerne}, E. and T. Wilksen and Zoeller, {M. M.} and Richichi, {S. J.} and H. Severini and P. Skubic and Dytman, {S. A.} and S. Nam and V. Savinov and S. Chen and Hinson, {J. W.} and J. Lee and Miller, {D. H.} and V. Pavlunin and Shibata, {E. I.} and Shipsey, {I. P.J.} and D. Cronin-Hennessy and Lyon, {A. L.} and Park, {C. S.} and W. Park and Thorndike, {E. H.} and Coan, {T. E.} and Gao, {Y. S.} and F. Liu and Y. Maravin and I. Narsky and R. Stroynowski and J. Ye and M. Artuso and C. Boulahouache and K. Bukin and E. Dambasuren and R. Mountain and T. Skwarnicki and S. Stone and Wang, {J. C.} and Mahmood, {A. H.} and Csorna, {S. E.} and I. Danko and Z. Xu and G. Bonvicini and D. Cinabro and M. Dubrovin and S. McGee and A. Bornheim and E. Lipeles and Pappas, {S. P.} and A. Shapiro and Sun, {W. M.} and Weinstein, {A. J.} and G. Masek and Paar, {H. P.} and R. Mahapatra and Briere, {R. A.} and Chen, {G. P.} and T. Ferguson and G. Tatishvili and H. Vogel",

year = "2003",

doi = "10.1103/PhysRevD.67.032001",

language = "English (US)",

volume = "67",

journal = "Physical Review D",

issn = "0556-2821",

publisher = "American Physical Society",

number = "3",

}

Adam, NE, Alexander, JP, Bebek, C, Berger, BE, Berkelman, K, Blanc, F, Boisvert, V, Cassel, DG, Drell, PS, Duboscq, JE, Ecklund, KM, Ehrlich, R, Gibbons, L, Gittelman, B, Gray, SW, Hartill, DL, Heltsley, BK, Hsu, L, Jones, CD, Kandaswamy, J, Kreinick, DL, Magerkurth, A, Mahlke-Krüger, H, Meyer, TO, Mistry, NB, Nordberg, E, Palmer, M, Patterson, JR, Peterson, D, Pivarski, J, Riley, D, Sadoff, AJ, Schwarthoff, H, Shepherd, MR, Thayer, JG, Urner, D, Valant-Spaight, B, Viehhauser, G, Warburton, A, Weinberger, M, Athar, SB, Avery, P, Stoeck, H, Yelton, J, Brandenburg, G, Ershov, A, Kim, DYJ, Wilson, R, Benslama, K, Eisenstein, BI, Ernst, J, Gollin, GD, Hans, RM, Karliner, I, Lowrey, N, Marsh, MA, Plager, C, Sedlack, C, Selen, M, Thaler, JJ, Williams, J, Edwards, KW, Ammar, R, Besson, D, Zhao, X, Anderson, S, Frolov, VV, Kubota, Y, Lee, SJ, Li, SZ, Poling, R, Smith, A, Stepaniak, CJ, Urheim, J, Ahmed, S, Alam, MS, Jian, L, Saleem, M, Wappler, F, Eckhart, E, Gan, KK, Gwon, C, Hart, T, Honscheid, K, Hufnagel, D, Kagan, H, Kass, R, Pedlar, TK, Thayer, JB, von Toerne, E, Wilksen, T, Zoeller, MM, Richichi, SJ, Severini, H, Skubic, P, Dytman, SA, Nam, S, Savinov, V, Chen, S, Hinson, JW, Lee, J, Miller, DH, Pavlunin, V, Shibata, EI, Shipsey, IPJ, Cronin-Hennessy, D, Lyon, AL, Park, CS, Park, W, Thorndike, EH, Coan, TE, Gao, YS, Liu, F, Maravin, Y, Narsky, I, Stroynowski, R, Ye, J, Artuso, M, Boulahouache, C, Bukin, K, Dambasuren, E, Mountain, R, Skwarnicki, T, Stone, S, Wang, JC, Mahmood, AH, Csorna, SE, Danko, I, Xu, Z, Bonvicini, G, Cinabro, D, Dubrovin, M, McGee, S, Bornheim, A, Lipeles, E, Pappas, SP, Shapiro, A, Sun, WM, Weinstein, AJ, Masek, G, Paar, HP, Mahapatra, R, Briere, RA, Chen, GP, Ferguson, T, Tatishvili, G & Vogel, H 2003, 'Determination of the B̄→D*ℓν̄ decay width and |V_cb|', Physical Review D, vol. 67, no. 3, 032001. https://doi.org/10.1103/PhysRevD.67.032001

TY - JOUR

T1 - Determination of the B̄→D*ℓν̄ decay width and |Vcb|

AU - Adam, N. E.

AU - Alexander, J. P.

AU - Bebek, C.

AU - Berger, B. E.

AU - Berkelman, K.

AU - Blanc, F.

AU - Boisvert, V.

AU - Cassel, D. G.

AU - Drell, P. S.

AU - Duboscq, J. E.

AU - Ecklund, K. M.

AU - Ehrlich, R.

AU - Gibbons, L.

AU - Gittelman, B.

AU - Gray, S. W.

AU - Hartill, D. L.

AU - Heltsley, B. K.

AU - Hsu, L.

AU - Jones, C. D.

AU - Kandaswamy, J.

AU - Kreinick, D. L.

AU - Magerkurth, A.

AU - Mahlke-Krüger, H.

AU - Meyer, T. O.

AU - Mistry, N. B.

AU - Nordberg, E.

AU - Palmer, M.

AU - Patterson, J. R.

AU - Peterson, D.

AU - Pivarski, J.

AU - Riley, D.

AU - Sadoff, A. J.

AU - Schwarthoff, H.

AU - Shepherd, M. R.

AU - Thayer, J. G.

AU - Urner, D.

AU - Valant-Spaight, B.

AU - Viehhauser, G.

AU - Warburton, A.

AU - Weinberger, M.

AU - Athar, S. B.

AU - Avery, P.

AU - Stoeck, H.

AU - Yelton, J.

AU - Brandenburg, G.

AU - Ershov, A.

AU - Kim, D. Y.J.

AU - Wilson, R.

AU - Benslama, K.

AU - Eisenstein, B. I.

AU - Ernst, J.

AU - Gollin, G. D.

AU - Hans, R. M.

AU - Karliner, I.

AU - Lowrey, N.

AU - Marsh, M. A.

AU - Plager, C.

AU - Sedlack, C.

AU - Selen, M.

AU - Thaler, J. J.

AU - Williams, J.

AU - Edwards, K. W.

AU - Ammar, R.

AU - Besson, D.

AU - Zhao, X.

AU - Anderson, S.

AU - Frolov, V. V.

AU - Kubota, Y.

AU - Lee, S. J.

AU - Li, S. Z.

AU - Poling, R.

AU - Smith, A.

AU - Stepaniak, C. J.

AU - Urheim, J.

AU - Ahmed, S.

AU - Alam, M. S.

AU - Jian, L.

AU - Saleem, M.

AU - Wappler, F.

AU - Eckhart, E.

AU - Gan, K. K.

AU - Gwon, C.

AU - Hart, T.

AU - Honscheid, K.

AU - Hufnagel, D.

AU - Kagan, H.

AU - Kass, R.

AU - Pedlar, T. K.

AU - Thayer, J. B.

AU - von Toerne, E.

AU - Wilksen, T.

AU - Zoeller, M. M.

AU - Richichi, S. J.

AU - Severini, H.

AU - Skubic, P.

AU - Dytman, S. A.

AU - Nam, S.

AU - Savinov, V.

AU - Chen, S.

AU - Hinson, J. W.

AU - Lee, J.

AU - Miller, D. H.

AU - Pavlunin, V.

AU - Shibata, E. I.

AU - Shipsey, I. P.J.

AU - Cronin-Hennessy, D.

AU - Lyon, A. L.

AU - Park, C. S.

AU - Park, W.

AU - Thorndike, E. H.

AU - Coan, T. E.

AU - Gao, Y. S.

AU - Liu, F.

AU - Maravin, Y.

AU - Narsky, I.

AU - Stroynowski, R.

AU - Ye, J.

AU - Artuso, M.

AU - Boulahouache, C.

AU - Bukin, K.

AU - Dambasuren, E.

AU - Mountain, R.

AU - Skwarnicki, T.

AU - Stone, S.

AU - Wang, J. C.

AU - Mahmood, A. H.

AU - Csorna, S. E.

AU - Danko, I.

AU - Xu, Z.

AU - Bonvicini, G.

AU - Cinabro, D.

AU - Dubrovin, M.

AU - McGee, S.

AU - Bornheim, A.

AU - Lipeles, E.

AU - Pappas, S. P.

AU - Shapiro, A.

AU - Sun, W. M.

AU - Weinstein, A. J.

AU - Masek, G.

AU - Paar, H. P.

AU - Mahapatra, R.

AU - Briere, R. A.

AU - Chen, G. P.

AU - Ferguson, T.

AU - Tatishvili, G.

AU - Vogel, H.

PY - 2003

Y1 - 2003

N2 - 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 |Vcb| using a sample of 3×106 BB̄ events in the CLEO detector at the Cornell Electron Storage Ring. We determine the yield of reconstructed B̄0 →D*+ ℓν̄ and B -D*0ℓν̄ 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 |Vcb|ℱ(1), where ℱ(1) is the form factor at w=1. We find |Vcb|ℱ(1) = 0.0431±0.0013(stat) ±0.0018(syst). We combine |Vcb|ℱ(1) with theoretical results for ℱ(1) to determine |Vcb| = 0.0469±0.0014(stat) ±0.0020(syst)±0.0018(theor). We also integrate the differential decay rate over w to obtain B(B̄0→D *+ℓν̄ = (609±0.19±0.40)% and B(B -→D*0ℓν̄) = (6.50±0. 20±0.43)%.

AB - 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 |Vcb| using a sample of 3×106 BB̄ events in the CLEO detector at the Cornell Electron Storage Ring. We determine the yield of reconstructed B̄0 →D*+ ℓν̄ and B -D*0ℓν̄ 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 |Vcb|ℱ(1), where ℱ(1) is the form factor at w=1. We find |Vcb|ℱ(1) = 0.0431±0.0013(stat) ±0.0018(syst). We combine |Vcb|ℱ(1) with theoretical results for ℱ(1) to determine |Vcb| = 0.0469±0.0014(stat) ±0.0020(syst)±0.0018(theor). We also integrate the differential decay rate over w to obtain B(B̄0→D *+ℓν̄ = (609±0.19±0.40)% and B(B -→D*0ℓν̄) = (6.50±0. 20±0.43)%.

UR - http://www.scopus.com/inward/record.url?scp=0037299226&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037299226&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.67.032001

DO - 10.1103/PhysRevD.67.032001

M3 - Article

AN - SCOPUS:0037299226

SN - 0556-2821

VL - 67

JO - Physical Review D

JF - Physical Review D

IS - 3

M1 - 032001

ER -

Determination of the B̄→D*ℓν̄ decay width and |V_cb|

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