Model-independent determination of the strong-phase difference between D0 and D⊃̄0→KS,L0h<sup>+</sup>h<sup>-</sup> (h=π, K) and its impact on the measurement of the CKM angle γ/Φ<inf>3</inf>

Date Issued
22-12-2010
Author(s)
Indian Institute of Technology, Madras
Kornicer, M.
Mitchell, R. E.
Shepherd, M. R.
Tarbert, C. M.
Besson, D.
Pedlar, T. K.
Xavier, J.
Cronin-Hennessy, D.
Hietala, J.
Zweber, P.
Dobbs, S.
Metreveli, Z.
Seth, K. K.
Tomaradze, A.
Xiao, T.
Brisbane, S.
Malde, S.
Martin, L.
Powell, A.
Spradlin, P.
Wilkinson, G.
Mendez, H.
Ge, J. Y.
Miller, D. H.
Shipsey, I. P.J.
Xin, B.
Adams, G. S.
Hu, D.
Moziak, B.
Napolitano, J.
Ecklund, K. M.
Insler, J.
Muramatsu, H.
Park, C. S.
Pearson, L. J.
Thorndike, E. H.
Yang, F.
Ricciardi, S.
Thomas, C.
Artuso, M.
Blusk, S.
Horwitz, N.
Mountain, R.
Skwarnicki, T.
Stone, S.
Wang, J. C.
Zhang, L. M.
Gershon, T.
Bonvicini, G.
Cinabro, D.
Lincoln, A.
Smith, M. J.
Zhou, P.
Zhu, J.
Naik, P.
Rademacker, J.
Asner, D. M.
Edwards, K. W.
Randrianarivony, K.
Tatishvili, G.
Briere, R. A.
Vogel, H.
Onyisi, P. U.E.
Rosner, J. L.
Alexander, J. P.
Cassel, D. G.
Das, S.
Ehrlich, R.
Fields, L.
Gibbons, L.
Gray, S. W.
Hartill, D. L.
Heltsley, B. K.
Kreinick, D. L.
Kuznetsov, V. E.
Patterson, J. R.
Peterson, D.
Riley, D.
Ryd, A.
Sadoff, A. J.
Shi, X.
Sun, W. M.
Yelton, J.
Rubin, P.
Lowrey, N.
Mehrabyan, S.
Selen, M.
Wiss, J.
DOI
Abstract
We report the first determination of the relative strong-phase difference between D0→KS,L0K+K- and D⊃̄0→KS, L0K+K-. In addition, we present updated measurements of the relative strong-phase difference between D0→KS, L0π+π- and D⊃̄0→KS,L0π +π-. Both measurements exploit the quantum coherence between a pair of D0 and D⊃̄0 mesons produced from ψ(3770) decays. The strong-phase differences measured are important for determining the Cabibbo-Kobayashi-Maskawa angle γ/Φ3 in B -→K-D⊃0 decays, where D⊃0 is a D0 or D⊃̄0 meson decaying to KS0h+h- (h=π, K), in a manner independent of the model assumed to describe the D0→KS0h +h- decay. Using our results, the uncertainty in γ/Φ3 due to the error on the strong-phase difference is expected to be between 1.7° and 3.9° for an analysis using B -→K-D⊃0, D⊃0→KS0π+π - decays, and between 3.2° and 3.9° for an analysis based on B-→K-D⊃0, D⊃0→KS0K+K - decays. A measurement is also presented of the CP-odd fraction, F-, of the decay D0→KS0K+K- in the region of the Φ→K+K- resonance. We find that in a region within 0.01GeV2/c4 of the nominal Φ mass squared F->0.91 at the 90% confidence level. © 2010 The American Physical Society.
Volume
82