Standard

Measurement of the branching fraction of leptonic decay Ds+ →τ+ντ via τ+ →π+π0 ν ¯ τ. / BESIII Collaboration.

In: Physical Review D, Vol. 104, No. 3, 032001, 01.08.2021.

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

Harvard

BESIII Collaboration 2021, 'Measurement of the branching fraction of leptonic decay Ds+ →τ+ντ via τ+ →π+π0 ν ¯ τ', Physical Review D, vol. 104, no. 3, 032001. https://doi.org/10.1103/PhysRevD.104.032001

APA

BESIII Collaboration (2021). Measurement of the branching fraction of leptonic decay Ds+ →τ+ντ via τ+ →π+π0 ν ¯ τ. Physical Review D, 104(3), [032001]. https://doi.org/10.1103/PhysRevD.104.032001

Vancouver

BESIII Collaboration. Measurement of the branching fraction of leptonic decay Ds+ →τ+ντ via τ+ →π+π0 ν ¯ τ. Physical Review D. 2021 Aug 1;104(3):032001. doi: 10.1103/PhysRevD.104.032001

Author

BESIII Collaboration. / Measurement of the branching fraction of leptonic decay Ds+ →τ+ντ via τ+ →π+π0 ν ¯ τ. In: Physical Review D. 2021 ; Vol. 104, No. 3.

BibTeX

@article{6c4654b18ca74b3c9f34ff0acd91d0df,
title = "Measurement of the branching fraction of leptonic decay Ds+ →τ+ντ via τ+ →π+π0 ν ¯ τ",
abstract = "By analyzing 6.32 fb-1 of e+e- annihilation data collected at the center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we determine the branching fraction of the leptonic decay Ds+→τ+ντ, with τ+→π+π0ν¯τ, to be BDs+→τ+ντ=(5.29±0.25stat±0.20syst)%. We estimate the product of the Cabibbo-Kobayashi-Maskawa matrix element |Vcs| and the Ds+ decay constant fDs+ to be fDs+|Vcs|=(244.8±5.8stat±4.8syst) MeV, using the known values of the τ+ and Ds+ masses as well as the Ds+ lifetime, together with our branching fraction measurement. Combining the value of |Vcs| obtained from a global fit in the standard model and fDs+ from lattice quantum chromodynamics, we obtain fDs+=(251.6±5.9stat±4.9syst) MeV and |Vcs|=0.980±0.023stat±0.019syst. Using the branching fraction of BDs+→μ+νμ=(5.35±0.21)×10-3, we obtain the ratio of the branching fractions BDs+→τ+ντ/BDs+→μ+νμ=9.89±0.71, which is consistent with the standard model prediction of lepton flavor universality.",
author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and P. Adlarson and S. Ahmed and M. Albrecht and R. Aliberti and A. Amoroso and An, {M. R.} and Q. An and Bai, {X. H.} and Y. Bai and O. Bakina and {Baldini Ferroli}, R. and I. Balossino and Y. Ban and K. Begzsuren and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and J. Bloms and A. Bortone and I. Boyko and Briere, {R. A.} and H. Cai and X. Cai and A. Calcaterra and Cao, {G. F.} and N. Cao and Cetin, {S. A.} and Chang, {J. F.} and Chang, {W. L.} and G. Chelkov and Chen, {D. Y.} and G. Chen and Chen, {H. S.} and Chen, {M. L.} and Chen, {S. J.} and Chen, {X. R.} and Chen, {Y. B.} and Chen, {Z. J.} and Cheng, {W. S.} and G. Cibinetto and F. Cossio and Cui, {X. F.} and Dai, {H. L.} and Dai, {X. C.} and A. Dbeyssi and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",
note = "Funding Information: The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key R&D Program of China under Contract Nos. 2020YFA0406400, 2020YFA0406300; National Natural Science Foundation of China (NSFC) under Contract Nos. 11805037, 11775230, 11875170, 11625523, 11635010, 11735014, 11822506, 11835012, 11935015, 11935016, 11935018, 11961141012, 12022510, 12025502, 12035009, 12035013, and 12061131003; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contract Nos. U1832121, U1732263, and U1832207; CAS Key Research Program of Frontier Sciences under Contract No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; Institute of Nuclear and Particle Physics at Shanghai Jiao Tong University and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union Horizon 2020 research and innovation programme under Contract No. Marie Sklodowska-Curie Grant Agreement No. 894790; German Research Foundation DFG under Contract No. 443159800, Collaborative Research Center CRC 1044, FOR 2359, FOR 2359, and GRK 214; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; Olle Engkvist Foundation under Contract No. 200-0605; STFC (United Kingdom); The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Royal Society, United Kingdom under Contract Nos. DH140054 and DH160214; The Swedish Research Council; U.S. Department of Energy under Contract Nos. DE-FG02-05ER41374 and DE-SC-0012069. Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society.",
year = "2021",
month = aug,
day = "1",
doi = "10.1103/PhysRevD.104.032001",
language = "English",
volume = "104",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "AMER PHYSICAL SOC",
number = "3",

}

RIS

TY - JOUR

T1 - Measurement of the branching fraction of leptonic decay Ds+ →τ+ντ via τ+ →π+π0 ν ¯ τ

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Aliberti, R.

AU - Amoroso, A.

AU - An, M. R.

AU - An, Q.

AU - Bai, X. H.

AU - Bai, Y.

AU - Bakina, O.

AU - Baldini Ferroli, R.

AU - Balossino, I.

AU - Ban, Y.

AU - Begzsuren, K.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Bloms, J.

AU - Bortone, A.

AU - Boyko, I.

AU - Briere, R. A.

AU - Cai, H.

AU - Cai, X.

AU - Calcaterra, A.

AU - Cao, G. F.

AU - Cao, N.

AU - Cetin, S. A.

AU - Chang, J. F.

AU - Chang, W. L.

AU - Chelkov, G.

AU - Chen, D. Y.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, X. R.

AU - Chen, Y. B.

AU - Chen, Z. J.

AU - Cheng, W. S.

AU - Cibinetto, G.

AU - Cossio, F.

AU - Cui, X. F.

AU - Dai, H. L.

AU - Dai, X. C.

AU - Dbeyssi, A.

AU - Muchnoi, N. Yu

AU - Nikolaev, I. B.

N1 - Funding Information: The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key R&D Program of China under Contract Nos. 2020YFA0406400, 2020YFA0406300; National Natural Science Foundation of China (NSFC) under Contract Nos. 11805037, 11775230, 11875170, 11625523, 11635010, 11735014, 11822506, 11835012, 11935015, 11935016, 11935018, 11961141012, 12022510, 12025502, 12035009, 12035013, and 12061131003; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contract Nos. U1832121, U1732263, and U1832207; CAS Key Research Program of Frontier Sciences under Contract No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; Institute of Nuclear and Particle Physics at Shanghai Jiao Tong University and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union Horizon 2020 research and innovation programme under Contract No. Marie Sklodowska-Curie Grant Agreement No. 894790; German Research Foundation DFG under Contract No. 443159800, Collaborative Research Center CRC 1044, FOR 2359, FOR 2359, and GRK 214; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; Olle Engkvist Foundation under Contract No. 200-0605; STFC (United Kingdom); The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Royal Society, United Kingdom under Contract Nos. DH140054 and DH160214; The Swedish Research Council; U.S. Department of Energy under Contract Nos. DE-FG02-05ER41374 and DE-SC-0012069. Publisher Copyright: © 2021 authors. Published by the American Physical Society.

PY - 2021/8/1

Y1 - 2021/8/1

N2 - By analyzing 6.32 fb-1 of e+e- annihilation data collected at the center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we determine the branching fraction of the leptonic decay Ds+→τ+ντ, with τ+→π+π0ν¯τ, to be BDs+→τ+ντ=(5.29±0.25stat±0.20syst)%. We estimate the product of the Cabibbo-Kobayashi-Maskawa matrix element |Vcs| and the Ds+ decay constant fDs+ to be fDs+|Vcs|=(244.8±5.8stat±4.8syst) MeV, using the known values of the τ+ and Ds+ masses as well as the Ds+ lifetime, together with our branching fraction measurement. Combining the value of |Vcs| obtained from a global fit in the standard model and fDs+ from lattice quantum chromodynamics, we obtain fDs+=(251.6±5.9stat±4.9syst) MeV and |Vcs|=0.980±0.023stat±0.019syst. Using the branching fraction of BDs+→μ+νμ=(5.35±0.21)×10-3, we obtain the ratio of the branching fractions BDs+→τ+ντ/BDs+→μ+νμ=9.89±0.71, which is consistent with the standard model prediction of lepton flavor universality.

AB - By analyzing 6.32 fb-1 of e+e- annihilation data collected at the center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we determine the branching fraction of the leptonic decay Ds+→τ+ντ, with τ+→π+π0ν¯τ, to be BDs+→τ+ντ=(5.29±0.25stat±0.20syst)%. We estimate the product of the Cabibbo-Kobayashi-Maskawa matrix element |Vcs| and the Ds+ decay constant fDs+ to be fDs+|Vcs|=(244.8±5.8stat±4.8syst) MeV, using the known values of the τ+ and Ds+ masses as well as the Ds+ lifetime, together with our branching fraction measurement. Combining the value of |Vcs| obtained from a global fit in the standard model and fDs+ from lattice quantum chromodynamics, we obtain fDs+=(251.6±5.9stat±4.9syst) MeV and |Vcs|=0.980±0.023stat±0.019syst. Using the branching fraction of BDs+→μ+νμ=(5.35±0.21)×10-3, we obtain the ratio of the branching fractions BDs+→τ+ντ/BDs+→μ+νμ=9.89±0.71, which is consistent with the standard model prediction of lepton flavor universality.

UR - http://www.scopus.com/inward/record.url?scp=85113706378&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.104.032001

DO - 10.1103/PhysRevD.104.032001

M3 - Article

AN - SCOPUS:85113706378

VL - 104

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 3

M1 - 032001

ER -

ID: 34083329