A Study of D0 → K0 SK0 SX Decay Channels The FOCUS Collaboration ⋆
نویسندگان
چکیده
Using data from the FOCUS experiment (FNAL-E831), we report on the decay of D0 mesons into final states containing more than one K0 S . We present evidence for two Cabibbo favored decay modes, D0 → K0 SK 0 SK −π+ and D0 → K0 SK 0 SK +π−, and measure their combined branching fraction relative to D0 → K0π+π− to be Γ(D→K S K S K±π∓) Γ(D0→K0π+π−) = 0.0106 ± 0.0019 ± 0.0010. Further, we report new measurements of Γ(D→K S K S K S ) Γ(D0→K0π+π−) = 0.0179 ± 0.0027 ± 0.0026, Γ(D →KK) Γ(D0→K0π+π−) = 0.0144 ± 0.0032 ± 0.0016, and Γ(D→K S K S π+π−) Γ(D0→K0π+π−) = 0.0208 ± 0.0035 ± 0.0021 where the first error is statistical and the second is systematic.
منابع مشابه
3 Study of Hadronic Five - Body Decays of Charmed Mesons Involving K 0
We study the decay of D0 and D+ s mesons into five-body final states including a K0 S and report the discovery of the decay mode D + s → K0 SK Sπππ. The branching ratio for the new mode is Γ(D s →K 0 S K S πππ) Γ(D s →K 0 S K−π+π+) = 0.102±0.029±0.029. We also determine the branching ratio of Γ(D→K S ππππ) Γ(D0→K S π+π−) = 0.095±0.005±0.007 as well as an upper limit for Γ(D→K S Kπππ) Γ(D0→K S π...
متن کاملEffects of final state interaction in B^+_c to D^0 K^+ decay
In this paper, the decay of Bc+ meson, which consists of two b and c heavy quarks, into the Do and K+ mesons was studied. Given that the experimental branching ratio for this decay was within the range of 3.75*10-5 to 11.16*10-5; it was decided to calculate the theoretical branching ratio by applying the final state interaction (FSI) through the T and cross-section channels. In this process, b...
متن کاملJa n 20 03 Study of the Cabibbo - suppressed decay modes D 0 → π − π + and D 0 → K − K
Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement for the branching ratios of the Cabibbo-suppressed decay modesD0 → π−π+ and D0 → K−K+. We measured: Γ(D0 → K−K+)/Γ(D0 → π−π+) = 2.81 ± 0.10(stat) ± 0.06(syst), Γ(D0 → K−K+)/Γ(D0 → K−π+) = 0.0993 ± 0.0014(stat) ± 0.0014(syst), and Γ(D0 → π−π+)/Γ(D0 → K−π+) = 0.0353 ± 0.0012(stat) ± 0.0006(syst). These values ha...
متن کاملSearch for D0−D0 Mixing
We report on a search for D0−D0 mixing made by a study of the ‘wrong-sign’ process D →K+π−. The data come from an integrated luminosity of ee collisions at √ s ≈ 10GeV consisting of 9.0 fb, recorded with the CLEO-II.V detector. We measure the time-integrated rate of the ‘wrong-sign’ process D → Kπ, relative to that of the Cabibbo-favored process D →K+π−, to be Rws = (0.34 ± 0.07 ± 0.06)%. We st...
متن کاملStudy of the Cabibbo - suppressed decay modes
Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement for the branching ratios of the Cabibbo-suppressed decay modesD0 → π−π+ and D0 → K−K+. We measured: Γ(D0 → K−K+)/Γ(D0 → π−π+) = 2.81 ± 0.10(stat) ± 0.06(syst), Γ(D0 → K−K+)/Γ(D0 → K−π+) = 0.0993 ± 0.0014(stat) ± 0.0014(syst), and Γ(D0 → π−π+)/Γ(D0 → K−π+) = 0.0353 ± 0.0012(stat) ± 0.0006(syst). These values ha...
متن کاملذخیره 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 2004