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Title: Determination of Strong-Phase Parameters in $$D → K_{S,L}^0π^+π^–$$

Journal Article · · Physical Review Letters
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We report the most precise measurements to date of the strong-phase parameters between $D^0$ and $$\bar{D}^0$$ decays to $$K^0_{S,L}π^+π^–$$ using a sample of 2.93 fb$$^{–1}$$ of $e^+e^–$ annihilation 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 $$γ/\phi_3$$ with $$\textit{B}$$ decays. Using our results, the decay model sensitivity to the $$γ/\phi_3$$ 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 $$γ/\phi_3$$ 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 $$\textit{CP}$$ violation, and the measurement of strong-phase parameters for other $$\textit{D}$$-decay modes.

Research Organization:
Indiana Univ., Bloomington, IN (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
BESIII Collaboration
Grant/Contract Number:
FG02-05ER41374; SC0010118; SC0012069; SC-0010118; SC-0012069
OSTI ID:
1633463
Alternate ID(s):
OSTI ID: 1800296
Journal Information:
Physical Review Letters, Vol. 124, Issue 24; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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