Updated measurement of the strong phase in D-0 -%26gt; K+pi(-) decay using quantum correlations in e(+)e(-) -%26gt; D-0(D)over-bar(0) at CLEO

作者：Asner D M^*; Tatishvili G; Ge J Y; Miller D H; Shipsey I P J; Xin B; Adams G S; Napolitano J; Ecklund K M; He Q; Insler J; Muramatsu H; Pearson L J; Thorndike E H; Artuso M; Blusk S; Horwitz N; Mountain R; Skwarnicki T; Stone S; Wang J C; Zhang L M; Onyisi P U E; Bonvicini G; Cinabro D; Lincoln A; Smith M J; Zhou P; Naik P; Rademacker J; Edwards K W; White E J; Briere R A; Vogel H; Rosner J L; Alexander J P

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2012, 86(11): 112001.

DOI：10.1103/PhysRevD.86.112001

We analyze a sample of 3 X 10(6) quantum-correlated D-0(D) over bar (0) pairs from 818 pb(-1) of e(+)e(-) collision data collected with the CLEO-c detector at E-cm = 3.77 GeV, to give an updated measurement of cos delta and a first determination of sin delta, where delta is the relative strong phase between doubly Cabibbo-suppressed D-0 -%26gt; K+pi(-) and Cabibbo-favored (D) over bar (0) -%26gt; K+pi(-) decay amplitudes. With no inputs from other experiments, we find cos delta = 0.81(-0.18-0.005)(+0.22+0.007), sin delta = -0.01 +/- 0.41 +/- 0.04, and vertical bar delta vertical bar = (10(-53-0)(+28+13))degrees. By including external measurements of mixing parameters, we find alternative values of cos delta = 1.15(-0.17-0.08)(+0.19+0.00), sin delta = 0.56(-0.31-0.20)(+0.32+0.21), and delta = (18(-17)(+11))degrees. Our results can be used to improve the world average uncertainty on the mixing parameter y by approximately 10%. DOI: 10.1103/PhysRevD.86.112001

• 出版日期2012-12-4
• 单位西北大学