Search for D0 - anti-D0 mixing

Collaboration
Dec, 1999
13 pages
Published in:
  • Phys.Rev.Lett. 84 (2000) 5038-5042
e-Print:
Report number:
  • SLAC-REPRINT-1999-121,
  • CLNS-99-1659,
  • CLEO-99-23
Experiments:
  • CESR-CLEO-II

Citations per year

199920052011201720230102030405060
Abstract: (arXiv)
We report on a search for D0-D0B mixing made by studying the `wrong-sign' process D0->K^+pi^-. The data come from an integrated luminosity of 9.0 1/fb of e^+e^- collisions at s^(1/2) of approximately 10 GeV recorded with the CLEO II.V detector. We measure the time integrated rate of the `wrong-sign' process D0->K^+pi^- relative to that of the Cabibbo-favored process D0B->K^+pi^- to be R=(0.332^{+0.063}_{-0.065}+-0.040)%. We study D0->K^+pi^- as a function of decay time to distinguish direct doubly Cabibbo-suppressed decay from D0-D0B mixing. The amplitudes that describe D0-D0B mixing, x' and y', are consistent with zero. At the 95% C.L. and without assumptions concerning charge-parity (CP) violating parameters, we find (1/2)x'^2 < 0.041% and -5.8% < y' < 1.0%.
  • electron positron: colliding beams
  • electron positron: annihilation
  • charmed meson: electroproduction
  • charmed meson: hadronic decay
  • D*(2010)
  • D0
  • decay: time dependence
  • D0 anti-D0: mixing
  • CP: violation
  • upper limit