A novel measurement technique of strong-phase differences between the decay amplitudes of D0 and D0 mesons is introduced which exploits quantum-correlated DD pairs produced by e+e−collisions at energies above the ψ(3770) production threshold, where DD pairs are produced in both even and odd eigenstates of the charge-conjugation symmetry. Employing this technique, the first determination of a D0–D0 relative strong phase is reported with such data samples. The strong-phase difference between D0 → K−π+ and D0 → K−π+ decays, δDK π, is measured to be δDK π = (192.8+11.0+1.9-12.4-2.4)°, using a dataset corresponding to an integrated luminosity of 7.13 fb−1 collected at center-of-mass energies between 4.13–4.23 GeV by the BESIII experiment.

Novel measurement of the strong-phase difference between D0 → K− π+ and D0 → K− π+ decays using C-even and C-odd quantum-correlated DD pairs

Garzia, I.;Melendi, F.  M.;
2025

Abstract

A novel measurement technique of strong-phase differences between the decay amplitudes of D0 and D0 mesons is introduced which exploits quantum-correlated DD pairs produced by e+e−collisions at energies above the ψ(3770) production threshold, where DD pairs are produced in both even and odd eigenstates of the charge-conjugation symmetry. Employing this technique, the first determination of a D0–D0 relative strong phase is reported with such data samples. The strong-phase difference between D0 → K−π+ and D0 → K−π+ decays, δDK π, is measured to be δDK π = (192.8+11.0+1.9-12.4-2.4)°, using a dataset corresponding to an integrated luminosity of 7.13 fb−1 collected at center-of-mass energies between 4.13–4.23 GeV by the BESIII experiment.
2025
Ablikim, M.; Achasov, M.  n.; Adlarson, P.; Ai, X.  c.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Ban, Y.; Bao, H. -R.; Batozskaya, V.; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2610633
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