Measurement of the absolute branching fraction of inclusive semielectronic Ds+ decays

(BESIII Collaboration)

doi:10.1103/PhysRevD.104.012003

Measurement of the absolute branching fraction of inclusive semielectronic Ds+ decays

(BESIII Collaboration)

Physics and Astronomy (Twin Cities)

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

15 Scopus citations

Abstract

We measure the inclusive semielectronic decay branching fraction of the Ds+ meson. A double-tag technique is applied to e+e- annihilation data collected by the BESIII experiment at the BEPCII collider, operating in the center-of-mass energy range 4.178-4.230 GeV. We select positrons from Ds+→Xe+νe with momenta greater than 200 MeV/c and determine the laboratory momentum spectrum, accounting for the effects of detector efficiency and resolution. The total positron yield and semielectronic branching fraction are determined by extrapolating this spectrum below the momentum cutoff. We measure the Ds+ semielectronic branching fraction to be (6.30±0.13(stat.)±0.09(syst.)±0.04(ext.))%, showing no evidence for unobserved exclusive semielectronic modes. We combine this result with external data taken from literature to determine the ratio of the Ds+ and D0 semielectronic widths, Γ(Ds+→Xe+νe)Γ(D0→Xe+νe)=0.790±0.016(stat.)±0.011(syst.)±0.016(ext.). Our results are consistent with and more precise than previous measurements.

Original language	English (US)
Article number	012003
Journal	Physical Review D
Volume	104
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.104.012003
State	Published - Jul 1 2021

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© 2021 authors. Published by the American Physical Society.

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@article{11938c80fea54a589223b14785158e52,

title = "Measurement of the absolute branching fraction of inclusive semielectronic Ds+ decays",

abstract = "We measure the inclusive semielectronic decay branching fraction of the Ds+ meson. A double-tag technique is applied to e+e- annihilation data collected by the BESIII experiment at the BEPCII collider, operating in the center-of-mass energy range 4.178-4.230 GeV. We select positrons from Ds+→Xe+νe with momenta greater than 200 MeV/c and determine the laboratory momentum spectrum, accounting for the effects of detector efficiency and resolution. The total positron yield and semielectronic branching fraction are determined by extrapolating this spectrum below the momentum cutoff. We measure the Ds+ semielectronic branching fraction to be (6.30±0.13(stat.)±0.09(syst.)±0.04(ext.))%, showing no evidence for unobserved exclusive semielectronic modes. We combine this result with external data taken from literature to determine the ratio of the Ds+ and D0 semielectronic widths, Γ(Ds+→Xe+νe)Γ(D0→Xe+νe)=0.790±0.016(stat.)±0.011(syst.)±0.016(ext.). Our results are consistent with and more precise than previous measurements.",

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 {De Boer}, {R. E.} and H. Muramatsu",

note = "Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society.",

year = "2021",

month = jul,

day = "1",

doi = "10.1103/PhysRevD.104.012003",

language = "English (US)",

volume = "104",

journal = "Physical Review D",

issn = "2470-0010",

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T1 - Measurement of the absolute branching fraction of inclusive semielectronic Ds+ decays

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 - De Boer, R. E.

AU - Muramatsu, H.

PY - 2021/7/1

Y1 - 2021/7/1

N2 - We measure the inclusive semielectronic decay branching fraction of the Ds+ meson. A double-tag technique is applied to e+e- annihilation data collected by the BESIII experiment at the BEPCII collider, operating in the center-of-mass energy range 4.178-4.230 GeV. We select positrons from Ds+→Xe+νe with momenta greater than 200 MeV/c and determine the laboratory momentum spectrum, accounting for the effects of detector efficiency and resolution. The total positron yield and semielectronic branching fraction are determined by extrapolating this spectrum below the momentum cutoff. We measure the Ds+ semielectronic branching fraction to be (6.30±0.13(stat.)±0.09(syst.)±0.04(ext.))%, showing no evidence for unobserved exclusive semielectronic modes. We combine this result with external data taken from literature to determine the ratio of the Ds+ and D0 semielectronic widths, Γ(Ds+→Xe+νe)Γ(D0→Xe+νe)=0.790±0.016(stat.)±0.011(syst.)±0.016(ext.). Our results are consistent with and more precise than previous measurements.

AB - We measure the inclusive semielectronic decay branching fraction of the Ds+ meson. A double-tag technique is applied to e+e- annihilation data collected by the BESIII experiment at the BEPCII collider, operating in the center-of-mass energy range 4.178-4.230 GeV. We select positrons from Ds+→Xe+νe with momenta greater than 200 MeV/c and determine the laboratory momentum spectrum, accounting for the effects of detector efficiency and resolution. The total positron yield and semielectronic branching fraction are determined by extrapolating this spectrum below the momentum cutoff. We measure the Ds+ semielectronic branching fraction to be (6.30±0.13(stat.)±0.09(syst.)±0.04(ext.))%, showing no evidence for unobserved exclusive semielectronic modes. We combine this result with external data taken from literature to determine the ratio of the Ds+ and D0 semielectronic widths, Γ(Ds+→Xe+νe)Γ(D0→Xe+νe)=0.790±0.016(stat.)±0.011(syst.)±0.016(ext.). Our results are consistent with and more precise than previous measurements.

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UR - http://www.scopus.com/inward/citedby.url?scp=85110117574&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.104.012003

DO - 10.1103/PhysRevD.104.012003

M3 - Article

AN - SCOPUS:85110117574

SN - 2470-0010

VL - 104

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - 012003

ER -

Measurement of the absolute branching fraction of inclusive semielectronic Ds+ decays

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