Measurement of the time-integrated <math display="inline"><mi>C</mi><mi>P</mi></math> asymmetry in <math display="inline"><msup><mi>D</mi><mn>0</mn></msup><mo stretchy="false">→</mo><msubsup><mi>K</mi><mi>S</mi><mn>0</mn></msubsup><msubsup><mi>K</mi><mi>S</mi><mn>0</mn></msubsup></math> decays using Belle and Belle II data

Adachi, I.; Aggarwal, L.; Ahmed, H.; Aihara, H.; Akopov, N.; Aloisio, A.; Althubiti, N.; Anh Ky, N.; Asner, D.M.; Atmacan, H.

doi:10.1103/PhysRevD.111.012015

Measurement of the time-integrated $C P$ asymmetry in $D^{0} \to K_{S}^{0} K_{S}^{0}$ decays using Belle and Belle II data

Belle and
Belle-II

Collaborations

Oct 31, 2024

10 pages

Published in:

Phys.Rev.D 111 (2025) 1, 012015

Published: Jan 1, 2025

e-Print:

2411.00306 [hep-ex]

DOI:

10.1103/PhysRevD.111.012015 (publication)

Report number:

KEK Preprint 2024-26,
Belle II Preprint 2024-026

Experiments:

View in:

ADS Abstract Service

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Abstract: (APS)

We measure the time-integrated

C P

asymmetry in

D^{0} \to K_{S}^{0} K_{S}^{0}

decays reconstructed in

e^{+} e^{-} \to c \bar{c}

events collected by the Belle and Belle II experiments. The corresponding data samples have integrated luminosities of 980 and

428 {fb}^{- 1}

, respectively. The

D^{0}

decays are required to originate from the

D^{* +} \to D^{0} π^{+}

decay, which determines the charm flavor at production time. A control sample of

D^{0} \to K^{+} K^{-}

decays is used to correct for production and detection asymmetries. The result,

(- 1.4 \pm 1.3 (stat) \pm 0.1 (syst)) %

, is consistent with previous determinations and with

C P

symmetry.

Note:

10 pages, 3 figures. arXiv admin note: text overlap with arXiv:2410.22961

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Measurement of the time-integrated CP asymmetry in D0→KS0KS0 decays using Belle and Belle II data

Citations per year

Measurement of the time-integrated $C P$ asymmetry in $D^{0} \to K_{S}^{0} K_{S}^{0}$ decays using Belle and Belle II data