Updated measurement of the strong phase in D0→K+π- decay using quantum correlations in e+e-→D0D̄0 at CLEO

D. M. Asner, G. Tatishvili, J. Y. Ge, D. H. Miller, I. P.J. Shipsey, B. Xin, G. S. Adams, J. Napolitano, K. M. Ecklund, Q. He, J. Insler, H. Muramatsu, L. J. Pearson, E. H. Thorndike, M. Artuso, S. Blusk, N. Horwitz, R. Mountain, T. Skwarnicki, S. StoneJ. C. Wang, L. M. Zhang, P. U.E. Onyisi, G. Bonvicini, D. Cinabro, A. Lincoln, M. J. Smith, P. Zhou, P. Naik, J. Rademacker, K. W. Edwards, E. J. White, R. A. Briere, H. Vogel, J. L. Rosner, J. P. Alexander, D. G. Cassel, S. Das, R. Ehrlich, L. Gibbons, S. W. Gray, D. L. Hartill, D. L. Kreinick, V. E. Kuznetsov, J. R. Patterson, D. Peterson, D. Riley, A. Ryd, A. J. Sadoff, X. Shi, S. Stroiney, W. M. Sun, J. Yelton, P. Rubin, N. Lowrey, S. Mehrabyan, M. Selen, J. Wiss, J. Libby, M. Kornicer, R. E. Mitchell, D. Besson, T. K. Pedlar, D. Cronin-Hennessy, J. Hietala, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, T. Xiao, A. Powell, C. Thomas, G. Wilkinson

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39 Scopus citations


We analyze a sample of 3×106 quantum-correlated D0D̄0 pairs from 818pb-1 of e+e- collision data collected with the CLEO-c detector at Ecm=3.77GeV, to give an updated measurement of cos δ and a first determination of sin δ, where δ is the relative strong phase between doubly Cabibbo-suppressed D0→K+π- and Cabibbo-favored D ̄0→K+π- decay amplitudes. With no inputs from other experiments, we find cos δ=0.81-0.18-0.05+0.22+0.07, sin δ=-0.01±0.41±0.04, and |δ|=(10-53-0+28+13)°. By including external measurements of mixing parameters, we find alternative values of cos δ=1.15-0.17-0.08+0.19+0.00, sin δ=0.56-0.31-0.20+0.32+0.21, and δ=(18-17+11)°. Our results can be used to improve the world average uncertainty on the mixing parameter y by approximately 10%.

Original languageEnglish (US)
Article number112001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number11
StatePublished - Dec 4 2012

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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