Measurement of lepton momentum moments in the decay B̄ → Xℓv̄ and determination of the heavy quark expansion parameters and |Vcb|

A. H. Mahmood; S. E. Csorna; I. Danko; G. Bonvicini; D. Cinabro; M. Dubrovin; S. McGee; A. Bornheim; E. Lipeles; S. P. Pappas; A. Shapiro; W. M. Sun; A. J. Weinstein; R. A. Briere; G. P. Chen; T. Ferguson; G. Tatishvili; H. Vogel; N. E. Adam; J. P. Alexander; K. Berkelman; V. Boisvert; D. G. Cassel; P. S. Drell; J. E. Duboscq; K. M. Ecklund; R. Ehrlich; R. S. Galik; 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; J. R. Patterson; D. Peterson; J. Pivarski; S. J. Richichi; D. Riley; A. J. Sadoff; H. Schwarthoff; M. R. Shepherd; J. G. Thayer; D. Urner; T. Wilksen; A. Warburton; M. Weinberger; S. B. Athar; P. Avery; L. Breva-Newell; V. Potlia; H. Stoeck; J. Yelton; K. Benslama; B. I. Eisenstein; G. D. Gollin; Karliner; N. Lowrey; 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; D. T. Gong; Y. Kubota; S. Z. Li; R. Poling; A. Smith; C. J. Stepaniak; J. Urheim; Z. Metreveli; K. K. Seth; A. Tomaradze; P. Zweber; S. Ahmed; M. S. Alam; J. Ernst; L. Jian; M. Saleem; F. Wappler; K. Arms; E. Eckhart; K. K. Gan; C. Gwon; K. Honscheid; D. Hufnagel; H. Kagan; R. Kass; T. K. Pedlar; E. Von Toerne; M. M. Zoeller; H. Severini; P. Skubic; S. A. Dytman; J. A. Mueller; 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; J. B. Thayer; E. H. Thorndike; T. E. Coan; Y. S. Gao; F. Liu; Y. Maravin; R. Stroynowski; M. Artuso; C. Boulahouache; S. Blusk; K. Bukin; E. Dambasuren; R. Mountain; H. Muramatsu; R. Nandakumar; T. Skwarnicki; S. Stone; J. C. Wang

doi:10.1103/PhysRevD.67.072001

Measurement of lepton momentum moments in the decay B̄ → Xℓv̄ and determination of the heavy quark expansion parameters and |V_cb|

A. H. Mahmood, S. E. Csorna, I. Danko, G. Bonvicini, D. Cinabro, M. Dubrovin, S. McGee, A. Bornheim, E. Lipeles, S. P. Pappas, A. Shapiro, W. M. Sun, A. J. Weinstein, R. A. Briere, G. P. Chen, T. Ferguson, G. Tatishvili, H. Vogel, N. E. Adam, J. P. AlexanderK. Berkelman, V. Boisvert, D. G. Cassel, P. S. Drell, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, R. S. Galik, 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, J. R. Patterson, D. Peterson, J. Pivarski, S. J. Richichi, D. Riley, A. J. Sadoff, H. Schwarthoff, M. R. Shepherd, J. G. Thayer, D. Urner, T. Wilksen, A. Warburton, M. Weinberger, S. B. Athar, P. Avery, L. Breva-Newell, V. Potlia, H. Stoeck, J. Yelton, K. Benslama, B. I. Eisenstein, G. D. Gollin, Karliner, N. Lowrey, 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, D. T. Gong, Y. Kubota, S. Z. Li, R. Poling, A. Smith, C. J. Stepaniak, J. Urheim, Z. Metreveli, K. K. Seth, A. Tomaradze, P. Zweber, S. Ahmed, M. S. Alam, J. Ernst, L. Jian, M. Saleem, F. Wappler, K. Arms, E. Eckhart, K. K. Gan, C. Gwon, K. Honscheid, D. Hufnagel, H. Kagan, R. Kass, T. K. Pedlar, E. Von Toerne, M. M. Zoeller, H. Severini, P. Skubic, S. A. Dytman, J. A. Mueller, 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, J. B. Thayer, E. H. Thorndike, T. E. Coan, Y. S. Gao, F. Liu, Y. Maravin, R. Stroynowski, M. Artuso, C. Boulahouache, S. Blusk, K. Bukin, E. Dambasuren, R. Mountain, H. Muramatsu, R. Nandakumar, T. Skwarnicki, S. Stone, J. C. Wang

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

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Abstract

We measure the primary lepton momentum spectrum in B̄→Xℓ v̄ decays, for p_ℓ≥ 1.5 GeV/c in the B rest frame. From this, we calculate various moments of the spectrum. In particular, we find R₀ ≡ ∫_1.7 _GeV(dΓ/dE _sl)dE_ℓ/∫_1.5 _GeV(dΓ/ dE_sl)dE_ℓ=0.6187±0.0014_stat±0. 0016_sys and R₁≡_1.5 _GeVE _ℓ(dΓ/dE_sl)dE_ℓ/∫ _1.5 _GeV(dΓ/dE_sl)dE_ℓ=(1. 7810±0.0007_stat±0.0009_sys) GeV. We use these moments to determine non-perturbative parameters governing the semileptonic width. In particular, we extract the heavy quark expansion parameters Λ̄=(0.39±0.03_stat±0.06 _sys±0.12_th) GeV and λ₁ = (-0.25±0.02_stat±0.05_sys ±0.14 _th) GeV². The theoretical constraints used are evaluated through order 1/M_B³ in the non-perturbative expansion and β₀α_s² in the perturbative expansion. We use these parameters to extract |V_cb| from the world average of the semileptonic width and find |V_cb| = (40.8±0.5 _Γsl±0.4 _{(λ1,Λ̄)exp}±0.9_th)× 10 ^-3. In addition, we extract the short range b-quark mass m _b^1S=(4.82±0.070_exp±0.11 _th) GeV/c². Finally, we discuss the implications of our measurements for the theoretical understanding of inclusive semileptonic processes.

Original language	English (US)
Article number	072001
Journal	Physical Review D
Volume	67
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.67.072001
State	Published - 2003
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevD.67.072001

Cite this

Mahmood, A. H., Csorna, S. E., Danko, I., Bonvicini, G., Cinabro, D., Dubrovin, M., McGee, S., Bornheim, A., Lipeles, E., Pappas, S. P., Shapiro, A., Sun, W. M., Weinstein, A. J., Briere, R. A., Chen, G. P., Ferguson, T., Tatishvili, G., Vogel, H., Adam, N. E., ... Wang, J. C. (2003). Measurement of lepton momentum moments in the decay B̄ → Xℓv̄ and determination of the heavy quark expansion parameters and |V_cb|. Physical Review D, 67(7), Article 072001. https://doi.org/10.1103/PhysRevD.67.072001

@article{e0d099904f6942d09c635fd959b3f30a,

title = "Measurement of lepton momentum moments in the decay {\=B} → Xℓ{\=v} and determination of the heavy quark expansion parameters and |Vcb|",

abstract = "We measure the primary lepton momentum spectrum in {\=B}→Xℓ {\=v} decays, for pℓ≥ 1.5 GeV/c in the B rest frame. From this, we calculate various moments of the spectrum. In particular, we find R0 ≡ ∫1.7 GeV(dΓ/dE sl)dEℓ/∫1.5 GeV(dΓ/ dEsl)dEℓ=0.6187±0.0014stat±0. 0016sys and R1≡1.5 GeVE ℓ(dΓ/dEsl)dEℓ/∫ 1.5 GeV(dΓ/dEsl)dEℓ=(1. 7810±0.0007stat±0.0009sys) GeV. We use these moments to determine non-perturbative parameters governing the semileptonic width. In particular, we extract the heavy quark expansion parameters {\=Λ}=(0.39±0.03stat±0.06 sys±0.12th) GeV and λ1 = (-0.25±0.02stat±0.05sys ±0.14 th) GeV2. The theoretical constraints used are evaluated through order 1/MB3 in the non-perturbative expansion and β0αs2 in the perturbative expansion. We use these parameters to extract |Vcb| from the world average of the semileptonic width and find |Vcb| = (40.8±0.5 Γsl±0.4 (λ1,{\=Λ})exp±0.9th)× 10 -3. In addition, we extract the short range b-quark mass m b1S=(4.82±0.070exp±0.11 th) GeV/c2. Finally, we discuss the implications of our measurements for the theoretical understanding of inclusive semileptonic processes.",

author = "Mahmood, {A. H.} and Csorna, {S. E.} and I. Danko 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 Briere, {R. A.} and Chen, {G. P.} and T. Ferguson and G. Tatishvili and H. Vogel and Adam, {N. E.} and Alexander, {J. P.} and K. Berkelman and V. Boisvert and Cassel, {D. G.} and Drell, {P. S.} and Duboscq, {J. E.} and Ecklund, {K. M.} and R. Ehrlich and Galik, {R. S.} 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 Patterson, {J. R.} and D. Peterson and J. Pivarski and Richichi, {S. J.} and D. Riley and Sadoff, {A. J.} and H. Schwarthoff and Shepherd, {M. R.} and Thayer, {J. G.} and D. Urner and T. Wilksen and A. Warburton and M. Weinberger and Athar, {S. B.} and P. Avery and L. Breva-Newell and V. Potlia and H. Stoeck and J. Yelton and K. Benslama and Eisenstein, {B. I.} and Gollin, {G. D.} and Karliner and N. Lowrey 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 Gong, {D. T.} and Y. Kubota and Li, {S. Z.} and R. Poling and A. Smith and Stepaniak, {C. J.} and J. Urheim and Z. Metreveli and Seth, {K. K.} and A. Tomaradze and P. Zweber and S. Ahmed and Alam, {M. S.} and J. Ernst and L. Jian and M. Saleem and F. Wappler and K. Arms and E. Eckhart and Gan, {K. K.} and C. Gwon and K. Honscheid and D. Hufnagel and H. Kagan and R. Kass and Pedlar, {T. K.} and {Von Toerne}, E. and Zoeller, {M. M.} and H. Severini and P. Skubic and Dytman, {S. A.} and Mueller, {J. 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 Thayer, {J. B.} and Thorndike, {E. H.} and Coan, {T. E.} and Gao, {Y. S.} and F. Liu and Y. Maravin and R. Stroynowski and M. Artuso and C. Boulahouache and S. Blusk and K. Bukin and E. Dambasuren and R. Mountain and H. Muramatsu and R. Nandakumar and T. Skwarnicki and S. Stone and Wang, {J. C.}",

year = "2003",

doi = "10.1103/PhysRevD.67.072001",

language = "English (US)",

volume = "67",

journal = "Physical Review D",

issn = "0556-2821",

publisher = "American Physical Society",

number = "7",

}

Mahmood, AH, Csorna, SE, Danko, I, Bonvicini, G, Cinabro, D, Dubrovin, M, McGee, S, Bornheim, A, Lipeles, E, Pappas, SP, Shapiro, A, Sun, WM, Weinstein, AJ, Briere, RA, Chen, GP, Ferguson, T, Tatishvili, G, Vogel, H, Adam, NE, Alexander, JP, Berkelman, K, Boisvert, V, Cassel, DG, Drell, PS, Duboscq, JE, Ecklund, KM, Ehrlich, R, Galik, RS, 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, Patterson, JR, Peterson, D, Pivarski, J, Richichi, SJ, Riley, D, Sadoff, AJ, Schwarthoff, H, Shepherd, MR, Thayer, JG, Urner, D, Wilksen, T, Warburton, A, Weinberger, M, Athar, SB, Avery, P, Breva-Newell, L, Potlia, V, Stoeck, H, Yelton, J, Benslama, K, Eisenstein, BI, Gollin, GD, Karliner, Lowrey, N, Plager, C, Sedlack, C, Selen, M, Thaler, JJ, Williams, J, Edwards, KW, Ammar, R, Besson, D, Zhao, X, Anderson, S, Frolov, VV, Gong, DT, Kubota, Y, Li, SZ, Poling, R, Smith, A, Stepaniak, CJ, Urheim, J, Metreveli, Z, Seth, KK, Tomaradze, A, Zweber, P, Ahmed, S, Alam, MS, Ernst, J, Jian, L, Saleem, M, Wappler, F, Arms, K, Eckhart, E, Gan, KK, Gwon, C, Honscheid, K, Hufnagel, D, Kagan, H, Kass, R, Pedlar, TK, Von Toerne, E, Zoeller, MM, Severini, H, Skubic, P, Dytman, SA, Mueller, JA, 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, Thayer, JB, Thorndike, EH, Coan, TE, Gao, YS, Liu, F, Maravin, Y, Stroynowski, R, Artuso, M, Boulahouache, C, Blusk, S, Bukin, K, Dambasuren, E, Mountain, R, Muramatsu, H, Nandakumar, R, Skwarnicki, T, Stone, S & Wang, JC 2003, 'Measurement of lepton momentum moments in the decay B̄ → Xℓv̄ and determination of the heavy quark expansion parameters and |V_cb|', Physical Review D, vol. 67, no. 7, 072001. https://doi.org/10.1103/PhysRevD.67.072001

TY - JOUR

T1 - Measurement of lepton momentum moments in the decay B̄ → Xℓv̄ and determination of the heavy quark expansion parameters and |Vcb|

AU - Mahmood, A. H.

AU - Csorna, S. E.

AU - Danko, I.

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 - Briere, R. A.

AU - Chen, G. P.

AU - Ferguson, T.

AU - Tatishvili, G.

AU - Vogel, H.

AU - Adam, N. E.

AU - Alexander, J. P.

AU - Berkelman, K.

AU - Boisvert, V.

AU - Cassel, D. G.

AU - Drell, P. S.

AU - Duboscq, J. E.

AU - Ecklund, K. M.

AU - Ehrlich, R.

AU - Galik, R. S.

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 - Patterson, J. R.

AU - Peterson, D.

AU - Pivarski, J.

AU - Richichi, S. J.

AU - Riley, D.

AU - Sadoff, A. J.

AU - Schwarthoff, H.

AU - Shepherd, M. R.

AU - Thayer, J. G.

AU - Urner, D.

AU - Wilksen, T.

AU - Warburton, A.

AU - Weinberger, M.

AU - Athar, S. B.

AU - Avery, P.

AU - Breva-Newell, L.

AU - Potlia, V.

AU - Stoeck, H.

AU - Yelton, J.

AU - Benslama, K.

AU - Eisenstein, B. I.

AU - Gollin, G. D.

AU - Karliner,

AU - Lowrey, N.

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 - Gong, D. T.

AU - Kubota, Y.

AU - Li, S. Z.

AU - Poling, R.

AU - Smith, A.

AU - Stepaniak, C. J.

AU - Urheim, J.

AU - Metreveli, Z.

AU - Seth, K. K.

AU - Tomaradze, A.

AU - Zweber, P.

AU - Ahmed, S.

AU - Alam, M. S.

AU - Ernst, J.

AU - Jian, L.

AU - Saleem, M.

AU - Wappler, F.

AU - Arms, K.

AU - Eckhart, E.

AU - Gan, K. K.

AU - Gwon, C.

AU - Honscheid, K.

AU - Hufnagel, D.

AU - Kagan, H.

AU - Kass, R.

AU - Pedlar, T. K.

AU - Von Toerne, E.

AU - Zoeller, M. M.

AU - Severini, H.

AU - Skubic, P.

AU - Dytman, S. A.

AU - Mueller, J. 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 - Thayer, J. B.

AU - Thorndike, E. H.

AU - Coan, T. E.

AU - Gao, Y. S.

AU - Liu, F.

AU - Maravin, Y.

AU - Stroynowski, R.

AU - Artuso, M.

AU - Boulahouache, C.

AU - Blusk, S.

AU - Bukin, K.

AU - Dambasuren, E.

AU - Mountain, R.

AU - Muramatsu, H.

AU - Nandakumar, R.

AU - Skwarnicki, T.

AU - Stone, S.

AU - Wang, J. C.

PY - 2003

Y1 - 2003

N2 - We measure the primary lepton momentum spectrum in B̄→Xℓ v̄ decays, for pℓ≥ 1.5 GeV/c in the B rest frame. From this, we calculate various moments of the spectrum. In particular, we find R0 ≡ ∫1.7 GeV(dΓ/dE sl)dEℓ/∫1.5 GeV(dΓ/ dEsl)dEℓ=0.6187±0.0014stat±0. 0016sys and R1≡1.5 GeVE ℓ(dΓ/dEsl)dEℓ/∫ 1.5 GeV(dΓ/dEsl)dEℓ=(1. 7810±0.0007stat±0.0009sys) GeV. We use these moments to determine non-perturbative parameters governing the semileptonic width. In particular, we extract the heavy quark expansion parameters Λ̄=(0.39±0.03stat±0.06 sys±0.12th) GeV and λ1 = (-0.25±0.02stat±0.05sys ±0.14 th) GeV2. The theoretical constraints used are evaluated through order 1/MB3 in the non-perturbative expansion and β0αs2 in the perturbative expansion. We use these parameters to extract |Vcb| from the world average of the semileptonic width and find |Vcb| = (40.8±0.5 Γsl±0.4 (λ1,Λ̄)exp±0.9th)× 10 -3. In addition, we extract the short range b-quark mass m b1S=(4.82±0.070exp±0.11 th) GeV/c2. Finally, we discuss the implications of our measurements for the theoretical understanding of inclusive semileptonic processes.

AB - We measure the primary lepton momentum spectrum in B̄→Xℓ v̄ decays, for pℓ≥ 1.5 GeV/c in the B rest frame. From this, we calculate various moments of the spectrum. In particular, we find R0 ≡ ∫1.7 GeV(dΓ/dE sl)dEℓ/∫1.5 GeV(dΓ/ dEsl)dEℓ=0.6187±0.0014stat±0. 0016sys and R1≡1.5 GeVE ℓ(dΓ/dEsl)dEℓ/∫ 1.5 GeV(dΓ/dEsl)dEℓ=(1. 7810±0.0007stat±0.0009sys) GeV. We use these moments to determine non-perturbative parameters governing the semileptonic width. In particular, we extract the heavy quark expansion parameters Λ̄=(0.39±0.03stat±0.06 sys±0.12th) GeV and λ1 = (-0.25±0.02stat±0.05sys ±0.14 th) GeV2. The theoretical constraints used are evaluated through order 1/MB3 in the non-perturbative expansion and β0αs2 in the perturbative expansion. We use these parameters to extract |Vcb| from the world average of the semileptonic width and find |Vcb| = (40.8±0.5 Γsl±0.4 (λ1,Λ̄)exp±0.9th)× 10 -3. In addition, we extract the short range b-quark mass m b1S=(4.82±0.070exp±0.11 th) GeV/c2. Finally, we discuss the implications of our measurements for the theoretical understanding of inclusive semileptonic processes.

UR - http://www.scopus.com/inward/record.url?scp=0038440495&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038440495&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.67.072001

DO - 10.1103/PhysRevD.67.072001

M3 - Article

AN - SCOPUS:0038440495

SN - 0556-2821

VL - 67

JO - Physical Review D

JF - Physical Review D

IS - 7

M1 - 072001

ER -

Measurement of lepton momentum moments in the decay B̄ → Xℓv̄ and determination of the heavy quark expansion parameters and |V_cb|

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