Comparison of D → K 0 S π and D → K 0 L π Decay Rates

نویسندگان

  • H. Muramatsu
  • C. S. Park
  • E. H. Thorndike
  • F. Yang
  • T. E. Coan
  • Y. S. Gao
  • D. M. Asner
  • K. W. Edwards
  • H. Vogel
  • M. E. Watkins
  • J. L. Rosner
  • N. E. Adam
  • J. P. Alexander
  • D. G. Cassel
  • J. E. Duboscq
  • R. Ehrlich
  • S. W. Gray
  • D. L. Hartill
  • B. K. Heltsley
  • D. Hertz
  • C. D. Jones
  • J. Kandaswamy
  • D. L. Kreinick
  • V. E. Kuznetsov
  • H. Mahlke-Krüger
  • P. U. E. Onyisi
  • J. R. Patterson
  • S. B. Athar
  • R. Patel
  • R. E. Mitchell
  • M. R. Shepherd
  • D. Besson
  • T. K. Pedlar
  • D. Cronin-Hennessy
  • K. Y. Gao
  • J. Ramirez
  • G. S. Huang
  • D. H. Miller
  • V. Pavlunin
  • B. Sanghi
  • I. P. J. Shipsey
  • B. Xin
  • G. S. Adams
چکیده

We present measurements of D → K Sπ and D → K 0 Lπ branching fractions using 281 pb −1 of ψ(3770) data at the CLEO-c experiment. We find that B(D → K Sπ ) is larger than B(D → K Lπ ), with an asymmetry of R(D) = 0.108 ± 0.025 ± 0.024. For B(D → K Sπ ) and B(D → K Lπ ), we observe no measurable difference; the asymmetry is R(D) = 0.022±0.016±0.018. The D asymmetry is consistent with the value based on the U-spin prediction A(D → Kπ)/A(D → K̄π) = − tan θC , where θC is the Cabibbo angle.

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

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 کامل

A Study of D0 → K0 SK0 SX Decay Channels The FOCUS Collaboration ⋆

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 m...

متن کامل

Ja 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 کامل

N ov 2 00 4 Study of the D 0 → K + K − π + π − decay

Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement for the Cabibbo-suppressed decay modeD0 → K+K−π+π−. We measure: Γ(D0 → K+K−π+π−)/Γ(D0 → K−π−π+π+) = 0.0295 ± 0.0011 ± 0.0008 . An amplitude analysis has been performed in order to determine the resonant substructure of this decay mode. The dominant components are the decays D0 → K1(1270) +K−, D0 → K1(1400) +K−...

متن کامل

Study of the D 0 → K + K − π + π − decay

Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement for the Cabibbo-suppressed decay modeD0 → K+K−π+π−. We measure: Γ(D0 → K+K−π+π−)/Γ(D0 → K−π−π+π+) = 0.0295 ± 0.0011 ± 0.0008 . An amplitude analysis has been performed in order to determine the resonant substructure of this decay mode. The dominant components are the decays D0 → K1(1270) +K−, D0 → K1(1400) +K−...

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 2013