Measurement of the CKM matrix element |Vcb | from B0 →d∗-ℓ+νℓ at Belle

Standard

Measurement of the CKM matrix element |Vcb | from B0 →d∗-ℓ+νℓ at Belle. / The BELLE collaboration.

In: Physical Review D, Vol. 100, No. 5, 052007, 11.09.2019.

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

Harvard

The BELLE collaboration 2019, 'Measurement of the CKM matrix element |Vcb | from B0 →d∗-ℓ+νℓ at Belle', Physical Review D, vol. 100, no. 5, 052007. https://doi.org/10.1103/PhysRevD.100.052007

APA

The BELLE collaboration (2019). Measurement of the CKM matrix element |Vcb | from B0 →d∗-ℓ+νℓ at Belle. Physical Review D, 100(5), [052007]. https://doi.org/10.1103/PhysRevD.100.052007

Vancouver

The BELLE collaboration. Measurement of the CKM matrix element |Vcb | from B0 →d∗-ℓ+νℓ at Belle. Physical Review D. 2019 Sept 11;100(5):052007. doi: 10.1103/PhysRevD.100.052007

Author

The BELLE collaboration. / Measurement of the CKM matrix element |Vcb | from B0 →d∗-ℓ+νℓ at Belle. In: Physical Review D. 2019 ; Vol. 100, No. 5.

BibTeX

@article{f759ccd81ca64e70858ce3248f4aadb6,

title = "Measurement of the CKM matrix element |Vcb | from B0 →d∗-ℓ+νℓ at Belle",

abstract = "We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| from B0→D∗-ℓ+νℓ decays, reconstructed with the full Belle data set of 711 fb-1 integrated luminosity. Two form factor parametrizations, originally conceived by the Caprini-Lellouch-Neubert (CLN) and the Boyd, Grinstein and Lebed (BGL) groups, are used to extract the product F(1)ηEW|Vcb| and the decay form factors, where F(1) is the normalization factor and ηEW is a small electroweak correction. In the CLN parametrization we find F(1)ηEW|Vcb|=(35.06±0.15±0.56)×10-3, ρ2=1.106±0.031±0.007, R1(1)=1.229±0.028±0.009, R2(1)=0.852±0.021±0.006. For the BGL parametrization we obtain F(1)ηEW|Vcb|=(34.93±0.23±0.59)×10-3, which is consistent with the world average when correcting for F(1)ηEW. The branching fraction of B0→D∗-ℓ+νℓ is measured to be B(B0→D∗-ℓ+νℓ)=(4.90±0.02±0.16)%. We also present a new test of lepton flavor universality violation in semileptonic B decays, B(B0→D∗-e+ν)B(B0→D∗-μ+ν)=1.01±0.01±0.03. The errors quoted correspond to the statistical and systematic uncertainties, respectively. This is the most precise measurement of F(1)ηEW|Vcb| and form factors to date and the first experimental study of the BGL form factor parametrization in an experimental measurement.",

keywords = "DISPERSIVE BOUNDS, IDENTIFICATION",

author = "{The BELLE collaboration} and E. Waheed and P. Urquijo and D. Ferlewicz and I. Adachi and K. Adamczyk and H. Aihara and {Al Said}, S. and Asner, {D. M.} and H. Atmacan and T. Aushev and R. Ayad and V. Babu and I. Badhrees and V. Bansal and P. Behera and C. Bele{\~n}o and F. Bernlochner and B. Bhuyan and T. Bilka and J. Biswal and A. Bobrov and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and M. Campajola and D. {\v C}ervenkov and P. Chang and V. Chekelian and A. Chen and Cheon, {B. G.} and K. Chilikin and Cho, {H. E.} and K. Cho and Choi, {S. K.} and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and {Di Carlo}, S. and Z. Dole{\v Z}al and S. Eidelman and D. Epifanov and A. Garmash and A. Kuzmin and D. Matvienko and B. Shwartz and Y. Usov and A. Vinokurova and V. Zhilich",

year = "2019",

month = sep,

day = "11",

doi = "10.1103/PhysRevD.100.052007",

language = "English",

volume = "100",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "AMER PHYSICAL SOC",

number = "5",

}

RIS

TY - JOUR

T1 - Measurement of the CKM matrix element |Vcb | from B0 →d∗-ℓ+νℓ at Belle

AU - The BELLE collaboration

AU - Waheed, E.

AU - Urquijo, P.

AU - Ferlewicz, D.

AU - Adachi, I.

AU - Adamczyk, K.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Badhrees, I.

AU - Bansal, V.

AU - Behera, P.

AU - Beleño, C.

AU - Bernlochner, F.

AU - Bhuyan, B.

AU - Bilka, T.

AU - Biswal, J.

AU - Bobrov, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Campajola, M.

AU - Červenkov, D.

AU - Chang, P.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, H. E.

AU - Cho, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Di Carlo, S.

AU - DoleŽal, Z.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Garmash, A.

AU - Kuzmin, A.

AU - Matvienko, D.

AU - Shwartz, B.

AU - Usov, Y.

AU - Vinokurova, A.

AU - Zhilich, V.

PY - 2019/9/11

Y1 - 2019/9/11

N2 - We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| from B0→D∗-ℓ+νℓ decays, reconstructed with the full Belle data set of 711 fb-1 integrated luminosity. Two form factor parametrizations, originally conceived by the Caprini-Lellouch-Neubert (CLN) and the Boyd, Grinstein and Lebed (BGL) groups, are used to extract the product F(1)ηEW|Vcb| and the decay form factors, where F(1) is the normalization factor and ηEW is a small electroweak correction. In the CLN parametrization we find F(1)ηEW|Vcb|=(35.06±0.15±0.56)×10-3, ρ2=1.106±0.031±0.007, R1(1)=1.229±0.028±0.009, R2(1)=0.852±0.021±0.006. For the BGL parametrization we obtain F(1)ηEW|Vcb|=(34.93±0.23±0.59)×10-3, which is consistent with the world average when correcting for F(1)ηEW. The branching fraction of B0→D∗-ℓ+νℓ is measured to be B(B0→D∗-ℓ+νℓ)=(4.90±0.02±0.16)%. We also present a new test of lepton flavor universality violation in semileptonic B decays, B(B0→D∗-e+ν)B(B0→D∗-μ+ν)=1.01±0.01±0.03. The errors quoted correspond to the statistical and systematic uncertainties, respectively. This is the most precise measurement of F(1)ηEW|Vcb| and form factors to date and the first experimental study of the BGL form factor parametrization in an experimental measurement.

AB - We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| from B0→D∗-ℓ+νℓ decays, reconstructed with the full Belle data set of 711 fb-1 integrated luminosity. Two form factor parametrizations, originally conceived by the Caprini-Lellouch-Neubert (CLN) and the Boyd, Grinstein and Lebed (BGL) groups, are used to extract the product F(1)ηEW|Vcb| and the decay form factors, where F(1) is the normalization factor and ηEW is a small electroweak correction. In the CLN parametrization we find F(1)ηEW|Vcb|=(35.06±0.15±0.56)×10-3, ρ2=1.106±0.031±0.007, R1(1)=1.229±0.028±0.009, R2(1)=0.852±0.021±0.006. For the BGL parametrization we obtain F(1)ηEW|Vcb|=(34.93±0.23±0.59)×10-3, which is consistent with the world average when correcting for F(1)ηEW. The branching fraction of B0→D∗-ℓ+νℓ is measured to be B(B0→D∗-ℓ+νℓ)=(4.90±0.02±0.16)%. We also present a new test of lepton flavor universality violation in semileptonic B decays, B(B0→D∗-e+ν)B(B0→D∗-μ+ν)=1.01±0.01±0.03. The errors quoted correspond to the statistical and systematic uncertainties, respectively. This is the most precise measurement of F(1)ηEW|Vcb| and form factors to date and the first experimental study of the BGL form factor parametrization in an experimental measurement.

KW - DISPERSIVE BOUNDS

KW - IDENTIFICATION

UR - http://www.scopus.com/inward/record.url?scp=85072963301&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.100.052007

DO - 10.1103/PhysRevD.100.052007

M3 - Article

AN - SCOPUS:85072963301

VL - 100

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 5

M1 - 052007

ER -

ID: 21853915