D 0 - D 0 mixing results from B A B AR by analysis of D 0 → K + π − π 0 Dalitz - plot regions

نویسنده

  • Michael G. Wilson
چکیده

We present a preliminary search for D-D mixing using the decays D → Kππ, additionally presenting Dalitz-plot distributions and a measurement of the branching ratio for this mode. A new tagging technique is used to produce the doubly Cabibbo-suppressed Dalitz plot, which in turn is used to motivate the method used for the D-mixing search. We analyze 230.4 fb of data collected from the BABAR detector at the PEP-II collider. Assuming CP conservation, we find RM < 0.054% with 95% confidence, and we estimate that the data are consistent with no mixing at a 4.5% confidence level. We present D-mixing results both with and without the assumption of CP conservation.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Of D - Meson Dalitz Plot Analyses

The formalism of Dalitz-Plot analysis is reviewed in the preceding note. Recent studies of multi-body decays of charm mesons probe a variety of physics including γ/φ 3 , D 0 –D 0 mixing, searches for CP violation, doubly Cabibbo-suppressed decays, and properties of S-wave ππ, Kπ, and KK resonances. In the following, we discuss: (1) D 0 → K 0 S π + π − ; (2) doubly Cabibbo-suppressed decays; and...

متن کامل

Recent Charm Results from Cleo

We describe two recent results using data collected with the CLEO detector at the CESR e + e − collider at energies near the Υ(4S). The first is a Dalitz plot analysis of the decay D 0 → K 0 S π + π −. We observe a rich structure including the decay D 0 → K * + π − which may be produced by D 0 − D 0 mixing or doubly Cabibbo-suppressed decays. We also search for D 0 − D 0 mixing in the decay D 0...

متن کامل

M ar 1 99 8 B 0 d ( t ) → DPP time - dependent Dalitz plots , CP - violating angles 2 β , 2 β + γ , and discrete ambiguities

B 0 d (t) → DP P time-dependent Dalitz plots, CP-violating angles 2β, 2β + γ, and discrete ambiguities Abstract We study CP-violation in resonant three-body B d → DP P decays, where P P stands for either ¯ Dπ, ¯ DK S , ππ or πK S. Analogously to the B d → 3π channel and the extraction of 2α, the first three channels are shown to measure cos 2β in addition to sin 2β, thus allowing to resolve the...

متن کامل

– 1 – Review of D - Meson Dalitz Plot Analyses

The formalism of Dalitz-plot analysis is reviewed in the preceding note. Recent studies of multi-body decays of charm mesons probe a variety of physics, including γ/φ 3 , D 0 –D 0 mixing, searches for CP violation, doubly Cabibbo-suppressed decays, and properties of S-wave ππ, Kπ, and K ¯ K resonances. In the following, we discuss: (1) D 0 → K 0 S π + π − ; (2) doubly Cabibbo-suppressed decays;...

متن کامل

– 1 – Review of Charm Dalitz Plot Analyses

The formalism of Dalitz-Plot analysis is reviewed in the preceeding note. Table 1 lists reported analyses of D mesons. In the following, we discuss a number of subjects of current interest: (1) D0 → K0 Sππ; (2) D → πππ: a σ(500) or f0(600); (3) D+ → K−π+π+: a κ(800)? (4) the f0(980), f0(1370) and f0(1500); (5) doubly Cabibbo-suppressed decays; and (6) CP violation. D0 → K0 Sππ: Several experime...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006