Determination of Strong-Phase Parameters in $D\rightarrow K^0_{S,L}\pi^+\pi^-$

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- 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/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.

Note:

7 pages, 3 figures

Elementary Particles and Fields
electron positron: annihilation
electron positron: colliding beams
D0: hadronic decay
K0(S)
K0(L)
pi: pair production
decay: model
CP: violation
Beijing Stor

References(41)

Figures(3)

[1]

Unitary Symmetry and Leptonic Decays

Nicola Cabibbo
(
- CERN
)

- Phys.Rev.Lett. 10 (1963) 531-533,
- Also in *Bologna 1984, Proceedings, Fifty years of weak-interaction physics* 648-649
•
DOI:
- 10.1103/PhysRevLett.10.531

[1]

CP Violation in the Renormalizable Theory of Weak Interaction

Makoto Kobayashi
(
- Kyoto U.
)
,
Toshihide Maskawa
(
- Kyoto U.
)

- Prog.Theor.Phys. 49 (1973) 652-657,
- Also in *Lichtenberg, D. B. (Ed.), Rosen, S. P. (Ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 218-223.
•
DOI:
- 10.1143/PTP.49.652

[2]

The ultimate theoretical error on $\gamma$ from $B \to DK$ decays

Joachim Brod
(
- Cincinnati U.
)
,
Jure Zupan
(
- Cincinnati U.
)

- JHEP 01 (2014) 051
•
e-Print:
- 1308.5663
•
DOI:
- 10.1007/JHEP01(2014)051

[3]

Emerging $\Delta M_{d}$ -anomaly from tree-level determinations of $|V_{cb}|$ and the angle $\gamma$

Monika Blanke
(
- KIT, Karlsruhe, IKP and
- KIT, Karlsruhe, TTP
)
,
Andrzej J. Buras
(
- TUM-IAS, Munich and
- Munich, Tech. U.
)

- Eur.Phys.J.C 79 (2019) 2, 159
•
e-Print:
- 1812.06963
•
DOI:
- 10.1140/epjc/s10052-019-6667-x

[4]

Review of Particle Physics

M. Tanabashi
(
- Nagoya U. and
- KMI, Nagoya
)
,
K. Hagiwara
(
- KEK, Tsukuba
)
,
K. Hikasa
(
- Tohoku U.
)
,
K. Nakamura
(
- Tokyo U., IPMU and
- KEK, Tsukuba
)
,
Y. Sumino
(
- Tohoku U.
)

et al.

- Phys.Rev.D 98 (2018) 3, 030001
•
DOI:
- 10.1103/PhysRevD.98.030001

[5]

CP violation and the CKM matrix: Assessing the impact of the asymmetric $B$ factories

J. Charles
(
- Marseille, CPT and
- Sud Toulon Var U.
)
,
Andreas Hocker
(
- Orsay, LAL
)
,
H. Lacker
(
- Dresden, Tech. U.
)
,
S. Laplace
(
- Annecy, LAPP
)
,
F.R. Le Diberder
(
- Orsay, LAL
)

et al.

- Eur.Phys.J.C 41 (2005) 1, 1-131
•
e-Print:
- hep-ph/0406184
•
DOI:
- 10.1140/epjc/s2005-02169-1

[5]

The 2004 UTfit collaboration report on the status of the unitarity triangle in the standard model

UTfit

Collaboration

•

Marcella Bona
(
- Turin U. and
- INFN, Turin
)

et al.

- JHEP 07 (2005) 028
•
e-Print:
- hep-ph/0501199
•
DOI:
- 10.1088/1126-6708/2005/07/028

[6]

New physics effects in tree-level decays and the precision in the determination of the quark mixing angle γ

Joachim Brod
(
- Mainz U. and
- U. Mainz, PRISMA
)
,
Alexander Lenz
(
- Durham U. and
- Durham U., IPPP
)
,
Gilberto Tetlalmatzi-Xolocotzi
(
- Durham U. and
- Durham U., IPPP
)
,
Martin Wiebusch
(
- Durham U. and
- Durham U., IPPP
)

- Phys.Rev.D 92 (2015) 3, 033002
•
e-Print:
- 1412.1446
•
DOI:
- 10.1103/PhysRevD.92.033002

[7]

How to determine all the angles of the unitarity triangle from B(d)0 ---> D K(s) and B(s)0 ---> D0

Michael Gronau
(
- Technion and
- DESY
)
,
David London
(
- Montreal U.
)

- Phys.Lett.B 253 (1991) 483-488
•
DOI:
- 10.1016/0370-2693(91)91756-L

[8]

On determining a weak phase from CP asymmetries in charged B decays

Michael Gronau
(
- Technion
)
,
Daniel Wyler
(
- Zurich U.
)

- Phys.Lett.B 265 (1991) 172-176,
- Phys. Lett. B265 (1991) 172-176 and Haifa Isr. Inst. Technol. - TECHNION-PH-91-14 (91/04,rec.Jun.) 12 p. (108261) Zuerich Univ. - ZU-TH 91-06 (91/04,rec.Jun.) 12 p.
•
DOI:
- 10.1016/0370-2693(91)90034-N