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

M. Ablikim; M. N. Achasov; S. Ahmed; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; O. Bakina; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; N. Berger; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. Chai; J. F. Chang; G. Chelkov; G. Chen; H. S. Chen; J. C. Chen; M. L. Chen; P. L. Chen; S. J. Chen; X. Chen; X. R. Chen; Y. B. Chen; H. P. Cheng; X. K. Chu; G. Cibinetto; H. L. Dai; J. P. Dai; A. Dbeyssi; H. Muramatsu; R. Poling; (BESIII Collaboration)

doi:10.1103/PhysRevD.94.112003

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

M. Ablikim, M. N. Achasov, S. Ahmed, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, O. Bakina, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, N. Berger, M. Bertani, D. Bettoni, J. M. BianF. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. Chai, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, P. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, H. Muramatsu, R. Poling, (BESIII Collaboration)

Physics and Astronomy (Twin Cities)

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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.

Original language	English (US)
Article number	112003
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	94
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.94.112003
State	Published - Dec 6 2016

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© 2016 American Physical Society.

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Ablikim, M., Achasov, M. N., Ahmed, S., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Bakina, O., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., ... (BESIII Collaboration) (2016). Measurements of the absolute branching fractions for Ds+ →ηe+νe and Ds+ →η′e+νe. Physical Review D - Particles, Fields, Gravitation and Cosmology, 94(11), Article 112003. https://doi.org/10.1103/PhysRevD.94.112003

Ablikim, M, Achasov, MN, Ahmed, S, Ai, XC, Albayrak, O, Albrecht, M, Ambrose, DJ, Amoroso, A, An, FF, An, Q, Bai, JZ, Bakina, O, Baldini Ferroli, R, Ban, Y, Bennett, DW, Bennett, JV, Berger, N, Bertani, M, Bettoni, D, Bian, JM, Bianchi, F, Boger, E, Boyko, I, Briere, RA, Cai, H, Cai, X, Cakir, O, Calcaterra, A, Cao, GF, Cetin, SA, Chai, J, Chang, JF, Chelkov, G, Chen, G, Chen, HS, Chen, JC, Chen, ML, Chen, PL, Chen, SJ, Chen, X, Chen, XR, Chen, YB, Cheng, HP, Chu, XK, Cibinetto, G, Dai, HL, Dai, JP, Dbeyssi, A, Muramatsu, H, Poling, R & (BESIII Collaboration) 2016, 'Measurements of the absolute branching fractions for Ds+ →ηe+νe and Ds+ →η′e+νe', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 94, no. 11, 112003. https://doi.org/10.1103/PhysRevD.94.112003

@article{e07b50cd4c3b476a93ef29ce430fcb9b,

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 = "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 H. Muramatsu and R. Poling and {(BESIII Collaboration)}",

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

year = "2016",

month = dec,

day = "6",

doi = "10.1103/PhysRevD.94.112003",

language = "English (US)",

volume = "94",

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TY - JOUR

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

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 - Muramatsu, H.

AU - Poling, R.

AU - (BESIII Collaboration)

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.

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U2 - 10.1103/PhysRevD.94.112003

DO - 10.1103/PhysRevD.94.112003

M3 - Article

AN - SCOPUS:85002213605

SN - 1550-7998

VL - 94

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 11

M1 - 112003

ER -

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

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