Measurements of the absolute branching fractions for Ds+ →ηe+νe and Ds+ →η′e+νe

(BESIII Collaboration)

doi:10.1103/PhysRevD.94.112003

Measurements of the absolute branching fractions for Ds+ →ηe+νe and Ds+ →η′e+νe

(BESIII Collaboration)

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

By analyzing 482 pb-1 of e+e- collision data collected at s=4.009 GeV with the BESIII detector at the BEPCII collider, we measure the absolute branching fractions for the semileptonic decays Ds+→ηe+νe and Ds+→η′e+νe to be B(Ds+→ηe+νe)=(2.30±0.31±0.08)% and B(Ds+→η′e+νe)=(0.93±0.30±0.05)%, respectively, and their ratio B(Ds+→η′e+νe)B(Ds+→ηe+νe)=0.40±0.14±0.02, where the first uncertainties are statistical and the second ones are systematic. The results are in good agreement with previous measurements within uncertainties; they can be used to determine the η-η′ mixing angle and improve upon the Ds+ semileptonic branching ratio precision.

Lingua originale	Inglese
Numero di articolo	112003
Rivista	Physical Review D
Volume	94
Numero di pubblicazione	11
DOI	https://doi.org/10.1103/PhysRevD.94.112003
Stato di pubblicazione	Pubblicato - 6 dic 2016
Pubblicato esternamente	Sì

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10.1103/PhysRevD.94.112003

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@article{6f1aadb3ceac4a44bdfc9ba5b3e02984,

title = "Measurements of the absolute branching fractions for Ds+ →ηe+νe and Ds+ →η′e+νe",

abstract = "By analyzing 482 pb-1 of e+e- collision data collected at s=4.009 GeV with the BESIII detector at the BEPCII collider, we measure the absolute branching fractions for the semileptonic decays Ds+→ηe+νe and Ds+→η′e+νe to be B(Ds+→ηe+νe)=(2.30±0.31±0.08)\% and B(Ds+→η′e+νe)=(0.93±0.30±0.05)\%, respectively, and their ratio B(Ds+→η′e+νe)B(Ds+→ηe+νe)=0.40±0.14±0.02, where the first uncertainties are statistical and the second ones are systematic. The results are in good agreement with previous measurements within uncertainties; they can be used to determine the η-η′ mixing angle and improve upon the Ds+ semileptonic branching ratio precision.",

author = "\{(BESIII Collaboration)\} and M. Ablikim and Achasov, \{M. N.\} and S. Ahmed and Ai, \{X. C.\} and O. Albayrak and M. Albrecht and Ambrose, \{D. J.\} and A. Amoroso and An, \{F. F.\} and Q. An and Bai, \{J. Z.\} and O. Bakina and \{Baldini Ferroli\}, R. and Y. Ban and Bennett, \{D. W.\} and Bennett, \{J. V.\} and N. Berger and M. Bertani and D. Bettoni and Bian, \{J. M.\} and F. Bianchi and E. Boger 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 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 X. Chen and Chen, \{X. R.\} and Chen, \{Y. B.\} and Cheng, \{H. P.\} and Chu, \{X. K.\} and G. Cibinetto and Dai, \{H. L.\} and Dai, \{J. P.\} and A. Dbeyssi and D. Dedovich and Deng, \{Z. Y.\}",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = dec,

day = "6",

doi = "10.1103/PhysRevD.94.112003",

language = "English",

volume = "94",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "11",

}

TY - JOUR

T1 - Measurements of the absolute branching fractions for Ds+ →ηe+νe and Ds+ →η′e+νe

AU - (BESIII Collaboration)

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ahmed, S.

AU - Ai, X. C.

AU - Albayrak, O.

AU - Albrecht, M.

AU - Ambrose, D. J.

AU - Amoroso, A.

AU - An, F. F.

AU - An, Q.

AU - Bai, J. Z.

AU - Bakina, O.

AU - Baldini Ferroli, R.

AU - Ban, Y.

AU - Bennett, D. W.

AU - Bennett, J. V.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bian, J. M.

AU - Bianchi, F.

AU - Boger, E.

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 - 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, X.

AU - Chen, X. R.

AU - Chen, Y. B.

AU - Cheng, H. P.

AU - Chu, X. K.

AU - Cibinetto, G.

AU - Dai, H. L.

AU - Dai, J. P.

AU - Dbeyssi, A.

AU - Dedovich, D.

AU - Deng, Z. Y.

PY - 2016/12/6

Y1 - 2016/12/6

N2 - By analyzing 482 pb-1 of e+e- collision data collected at s=4.009 GeV with the BESIII detector at the BEPCII collider, we measure the absolute branching fractions for the semileptonic decays Ds+→ηe+νe and Ds+→η′e+νe to be B(Ds+→ηe+νe)=(2.30±0.31±0.08)% and B(Ds+→η′e+νe)=(0.93±0.30±0.05)%, respectively, and their ratio B(Ds+→η′e+νe)B(Ds+→ηe+νe)=0.40±0.14±0.02, where the first uncertainties are statistical and the second ones are systematic. The results are in good agreement with previous measurements within uncertainties; they can be used to determine the η-η′ mixing angle and improve upon the Ds+ semileptonic branching ratio precision.

AB - By analyzing 482 pb-1 of e+e- collision data collected at s=4.009 GeV with the BESIII detector at the BEPCII collider, we measure the absolute branching fractions for the semileptonic decays Ds+→ηe+νe and Ds+→η′e+νe to be B(Ds+→ηe+νe)=(2.30±0.31±0.08)% and B(Ds+→η′e+νe)=(0.93±0.30±0.05)%, respectively, and their ratio B(Ds+→η′e+νe)B(Ds+→ηe+νe)=0.40±0.14±0.02, where the first uncertainties are statistical and the second ones are systematic. The results are in good agreement with previous measurements within uncertainties; they can be used to determine the η-η′ mixing angle and improve upon the Ds+ semileptonic branching ratio precision.

UR - https://www.scopus.com/pages/publications/85002213605

U2 - 10.1103/PhysRevD.94.112003

DO - 10.1103/PhysRevD.94.112003

M3 - Article

SN - 2470-0010

VL - 94

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112003

ER -

Measurements of the absolute branching fractions for Ds+ →ηe+νe and Ds+ →η′e+νe

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