Determination of the Pseudoscalar Decay Constant f Ds+ via Ds+ →μ+νμ

Standard

Determination of the Pseudoscalar Decay Constant f Ds+ via Ds+ →μ+νμ. / The BELLE collaboration.

In: Physical Review Letters, Vol. 122, No. 7, 071802, 22.02.2019.

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

Harvard

The BELLE collaboration 2019, 'Determination of the Pseudoscalar Decay Constant f Ds+ via Ds+ →μ+νμ', Physical Review Letters, vol. 122, no. 7, 071802. https://doi.org/10.1103/PhysRevLett.122.071802

APA

The BELLE collaboration (2019). Determination of the Pseudoscalar Decay Constant f Ds+ via Ds+ →μ+νμ. Physical Review Letters, 122(7), [071802]. https://doi.org/10.1103/PhysRevLett.122.071802

Vancouver

The BELLE collaboration. Determination of the Pseudoscalar Decay Constant f Ds+ via Ds+ →μ+νμ. Physical Review Letters. 2019 Feb 22;122(7):071802. doi: 10.1103/PhysRevLett.122.071802

Author

The BELLE collaboration. / Determination of the Pseudoscalar Decay Constant f Ds+ via Ds+ →μ+νμ. In: Physical Review Letters. 2019 ; Vol. 122, No. 7.

BibTeX

@article{a2a7535841124d6191106f6120708d39,

title = "Determination of the Pseudoscalar Decay Constant f Ds+ via Ds+ →μ+νμ",

abstract = "Using a 3.19 fb-1 data sample collected at an e+e- center-of-mass energy of Ecm=4.178 GeV with the BESIII detector, we measure the branching fraction of the leptonic decay Ds+→μ+νμ to be BDs+→μ+νμ=(5.49±0.16stat±0.15syst)×10-3. Combining our branching fraction with the masses of the Ds+ and μ+ and the lifetime of the Ds+, we determine fDs+|Vcs|=246.2±3.6stat±3.5syst MeV. Using the c→s quark mixing matrix element |Vcs| determined from a global standard model fit, we evaluate the Ds+ decay constant fDs+=252.9±3.7stat±3.6syst MeV. Alternatively, using the value of fDs+ calculated by lattice quantum chromodynamics, we find |Vcs|=0.985±0.014stat±0.014syst. These values of BDs+→μ+νμ, fDs+|Vcs|, fDs+ and |Vcs| are each the most precise results to date.",

keywords = "RELATIVISTIC TREATMENT, RADIATIVE-CORRECTIONS, LATTICE QCD, D-MESONS, LIGHT, CHARM, MASS",

author = "{The BELLE collaboration} and M. Ablikim and Achasov, {M. N.} and S. Ahmed and M. Albrecht and M. Alekseev and A. Amoroso and An, {F. F.} and Q. An and Y. Bai and O. Bakina and Ferroli, {R. Baldini} and Y. Ban and K. Begzsuren and Bennett, {D. W.} and Bennett, {J. V.} and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and I. Boyko and Briere, {R. A.} and H. Cai and X. Cai and O. Cakir and A. Calcaterra and Cao, {G. F.} and Cetin, {S. A.} and J. Chai and Chang, {J. F.} and Chang, {W. L.} and G. Chelkov and G. Chen and Chen, {H. S.} and Chen, {J. C.} and Chen, {M. L.} and Chen, {P. L.} and Chen, {S. J.} and Chen, {Y. B.} and G. Cibinetto and F. Cossio and Dai, {H. L.} and Dai, {J. P.} and A. Dbeyssi and D. Dedovich and Deng, {Z. Y.} and A. Denig and I. Denysenko and M. Destefanis and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",

note = "Publisher Copyright: {\textcopyright} 2019 authors. Published by the American Physical Society.",

year = "2019",

month = feb,

day = "22",

doi = "10.1103/PhysRevLett.122.071802",

language = "English",

volume = "122",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "7",

}

RIS

TY - JOUR

T1 - Determination of the Pseudoscalar Decay Constant f Ds+ via Ds+ →μ+νμ

AU - The BELLE collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Alekseev, M.

AU - Amoroso, A.

AU - An, F. F.

AU - An, Q.

AU - Bai, Y.

AU - Bakina, O.

AU - Ferroli, R. Baldini

AU - Ban, Y.

AU - Begzsuren, K.

AU - Bennett, D. W.

AU - Bennett, J. V.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Boyko, I.

AU - Briere, R. A.

AU - Cai, H.

AU - Cai, X.

AU - Cakir, O.

AU - Calcaterra, A.

AU - Cao, G. F.

AU - Cetin, S. A.

AU - Chai, J.

AU - Chang, J. F.

AU - Chang, W. L.

AU - Chelkov, G.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, J. C.

AU - Chen, M. L.

AU - Chen, P. L.

AU - Chen, S. J.

AU - Chen, Y. B.

AU - Cibinetto, G.

AU - Cossio, F.

AU - Dai, H. L.

AU - Dai, J. P.

AU - Dbeyssi, A.

AU - Dedovich, D.

AU - Deng, Z. Y.

AU - Denig, A.

AU - Denysenko, I.

AU - Destefanis, M.

AU - Muchnoi, N. Yu

AU - Nikolaev, I. B.

PY - 2019/2/22

Y1 - 2019/2/22

N2 - Using a 3.19 fb-1 data sample collected at an e+e- center-of-mass energy of Ecm=4.178 GeV with the BESIII detector, we measure the branching fraction of the leptonic decay Ds+→μ+νμ to be BDs+→μ+νμ=(5.49±0.16stat±0.15syst)×10-3. Combining our branching fraction with the masses of the Ds+ and μ+ and the lifetime of the Ds+, we determine fDs+|Vcs|=246.2±3.6stat±3.5syst MeV. Using the c→s quark mixing matrix element |Vcs| determined from a global standard model fit, we evaluate the Ds+ decay constant fDs+=252.9±3.7stat±3.6syst MeV. Alternatively, using the value of fDs+ calculated by lattice quantum chromodynamics, we find |Vcs|=0.985±0.014stat±0.014syst. These values of BDs+→μ+νμ, fDs+|Vcs|, fDs+ and |Vcs| are each the most precise results to date.

AB - Using a 3.19 fb-1 data sample collected at an e+e- center-of-mass energy of Ecm=4.178 GeV with the BESIII detector, we measure the branching fraction of the leptonic decay Ds+→μ+νμ to be BDs+→μ+νμ=(5.49±0.16stat±0.15syst)×10-3. Combining our branching fraction with the masses of the Ds+ and μ+ and the lifetime of the Ds+, we determine fDs+|Vcs|=246.2±3.6stat±3.5syst MeV. Using the c→s quark mixing matrix element |Vcs| determined from a global standard model fit, we evaluate the Ds+ decay constant fDs+=252.9±3.7stat±3.6syst MeV. Alternatively, using the value of fDs+ calculated by lattice quantum chromodynamics, we find |Vcs|=0.985±0.014stat±0.014syst. These values of BDs+→μ+νμ, fDs+|Vcs|, fDs+ and |Vcs| are each the most precise results to date.

KW - RELATIVISTIC TREATMENT

KW - RADIATIVE-CORRECTIONS

KW - LATTICE QCD

KW - D-MESONS

KW - LIGHT

KW - CHARM

KW - MASS

UR - http://www.scopus.com/inward/record.url?scp=85062005238&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.122.071802

DO - 10.1103/PhysRevLett.122.071802

M3 - Article

C2 - 30848637

AN - SCOPUS:85062005238

VL - 122

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 7

M1 - 071802

ER -

ID: 18624657