Determination of Strong-Phase Parameters in D → KS,L0 π+π

BESIII Collaboration

doi:10.1103/PhysRevLett.124.241802

Determination of Strong-Phase Parameters in D → KS,L0 π+π

BESIII Collaboration

Physics and Astronomy (Twin Cities)

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

12 Scopus citations

Abstract

We report the most precise measurements to date of the strong-phase parameters between D0 and D¯0 decays to KS,L0π+π-using a sample of 2.93 fb-1 of e+e- A nnihilation data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider. Our results provide the key inputs for a binned model-independent determination of the Cabibbo-Kobayashi-Maskawa angle γ/φ3 with B decays. Using our results, the decay model sensitivity to the γ/φ3 measurement is expected to be between 0.7° and 1.2°, approximately a factor of three smaller than that achievable with previous measurements, based on the studies of the simulated data. The improved precision of this work ensures that measurements of γ/φ3 will not be limited by knowledge of strong phases for the next decade. Furthermore, our results provide critical input for other flavor-physics investigations, including charm mixing, other measurements of CP violation, and the measurement of strong-phase parameters for other D-decay modes.

Original language	English (US)
Article number	241802
Journal	Physical review letters
Volume	124
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.124.241802
State	Published - Jun 19 2020

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© 2020 authors. Published by the American Physical Society.

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@article{d16589bd6eb14e8ab60d603c42868626,

title = "Determination of Strong-Phase Parameters in D → KS,L0 π+π",

abstract = "We report the most precise measurements to date of the strong-phase parameters between D0 and D¯0 decays to KS,L0π+π-using a sample of 2.93 fb-1 of e+e- A nnihilation data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider. Our results provide the key inputs for a binned model-independent determination of the Cabibbo-Kobayashi-Maskawa angle γ/φ3 with B decays. Using our results, the decay model sensitivity to the γ/φ3 measurement is expected to be between 0.7° and 1.2°, approximately a factor of three smaller than that achievable with previous measurements, based on the studies of the simulated data. The improved precision of this work ensures that measurements of γ/φ3 will not be limited by knowledge of strong phases for the next decade. Furthermore, our results provide critical input for other flavor-physics investigations, including charm mixing, other measurements of CP violation, and the measurement of strong-phase parameters for other D-decay modes.",

author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and P. Adlarson and S. Ahmed and M. Albrecht and M. Alekseev and D. Ambrose and A. Amoroso and An, {F. F.} and Q. An and Anita and Y. Bai and O. Bakina and Ferroli, {R. Baldini} and I. Balossino and Y. Ban and K. Begzsuren and Bennett, {J. V.} and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and J. Biernat and J. Bloms 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 J. Chai and Chang, {J. F.} and Chang, {W. L.} and G. Chelkov and Chen, {D. Y.} and G. Chen and Chen, {H. S.} and J. Chen and Chen, {J. C.} and Chen, {M. L.} and Chen, {S. J.} and Chen, {Y. B.} and W. Cheng and G. Cibinetto and F. Cossio and Cui, {X. F.} and H. Muramatsu and R. Poling",

note = "Publisher Copyright: {\textcopyright} 2020 authors. Published by the American Physical Society.",

year = "2020",

month = jun,

day = "19",

doi = "10.1103/PhysRevLett.124.241802",

language = "English (US)",

volume = "124",

journal = "Physical review letters",

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publisher = "American Physical Society",

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T1 - Determination of Strong-Phase Parameters in D → KS,L0 π+π

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Alekseev, M.

AU - Ambrose, D.

AU - Amoroso, A.

AU - An, F. F.

AU - An, Q.

AU - Anita,

AU - Bai, Y.

AU - Bakina, O.

AU - Ferroli, R. Baldini

AU - Balossino, I.

AU - Ban, Y.

AU - Begzsuren, K.

AU - Bennett, J. V.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Biernat, J.

AU - Bloms, J.

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 - Chai, J.

AU - Chang, J. F.

AU - Chang, W. L.

AU - Chelkov, G.

AU - Chen, D. Y.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, J.

AU - Chen, J. C.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, Y. B.

AU - Cheng, W.

AU - Cibinetto, G.

AU - Cossio, F.

AU - Cui, X. F.

AU - Muramatsu, H.

AU - Poling, R.

PY - 2020/6/19

Y1 - 2020/6/19

N2 - We report the most precise measurements to date of the strong-phase parameters between D0 and D¯0 decays to KS,L0π+π-using a sample of 2.93 fb-1 of e+e- A nnihilation data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider. Our results provide the key inputs for a binned model-independent determination of the Cabibbo-Kobayashi-Maskawa angle γ/φ3 with B decays. Using our results, the decay model sensitivity to the γ/φ3 measurement is expected to be between 0.7° and 1.2°, approximately a factor of three smaller than that achievable with previous measurements, based on the studies of the simulated data. The improved precision of this work ensures that measurements of γ/φ3 will not be limited by knowledge of strong phases for the next decade. Furthermore, our results provide critical input for other flavor-physics investigations, including charm mixing, other measurements of CP violation, and the measurement of strong-phase parameters for other D-decay modes.

AB - We report the most precise measurements to date of the strong-phase parameters between D0 and D¯0 decays to KS,L0π+π-using a sample of 2.93 fb-1 of e+e- A nnihilation data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider. Our results provide the key inputs for a binned model-independent determination of the Cabibbo-Kobayashi-Maskawa angle γ/φ3 with B decays. Using our results, the decay model sensitivity to the γ/φ3 measurement is expected to be between 0.7° and 1.2°, approximately a factor of three smaller than that achievable with previous measurements, based on the studies of the simulated data. The improved precision of this work ensures that measurements of γ/φ3 will not be limited by knowledge of strong phases for the next decade. Furthermore, our results provide critical input for other flavor-physics investigations, including charm mixing, other measurements of CP violation, and the measurement of strong-phase parameters for other D-decay modes.

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U2 - 10.1103/PhysRevLett.124.241802

DO - 10.1103/PhysRevLett.124.241802

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SN - 0031-9007

VL - 124

JO - Physical review letters

JF - Physical review letters

IS - 24

M1 - 241802

ER -

Determination of Strong-Phase Parameters in D → KS,L0 π+π

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