Measurement of the branching ratio for D−s→τ−ν̄τ decays
نویسندگان
چکیده
منابع مشابه
Measurement of the radiative branching ratio for the Hoyle state using cas- cade gamma decays
A new setup consisting of four 5” by 5” NaI scintillators and an array of particle detectors is being developed. Proton-gamma-gamma coincidences will be measured using the 12C(p, p ′ )12C reaction at 10.5 MeV energy. The new setup will be used for the measurement of the electromagnetic decay rate of the Hoyle state via two E2 transitions. We report the initial experimental results for singles g...
متن کاملMeasurement of the Branching Fractions for the Exclusive Decays
Using data collected with the BABAR detector between 1999 and 2002, we report the observation of 823±57 B0 and 969±65 B+ decays to DD(∗)K, where D and D(∗) are fully reconstructed and where K is either a K or a K0 S decaying to π +π−. All 22 possible B decays to D (∗) D(∗)K are reconstructed exclusively and the corresponding branching fractions or limits are determined. The preliminary branchin...
متن کاملMeasurement of Branching Fractions in τ Decays
Full LEP-I data collected by the ALEPH detector during 1991-1995 running are analyzed in order to measure the τ decay branching fractions. The analysis follows the global method used in the published study based on 1991-1993 data, with several improvements, especially concerning the treatment of photons and π’s. Extensive systematic studies are performed, in order to match the large statistics ...
متن کاملBranching fraction measurement of Bþ ! !‘þ decays
J. P. Lees, V. Poireau, V. Tisserand, J. Garra Tico, E. Grauges, A. Palano, G. Eigen, B. Stugu, D.N. Brown, L. T. Kerth, Yu. G. Kolomensky, G. Lynch, H. Koch, T. Schroeder, D. J. Asgeirsson, C. Hearty, T. S. Mattison, J. A. McKenna, R. Y. So, A. Khan, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, V. B. Golubev, E. A. Kravchenko, A. P. Onuchin, S. I. Serednyakov, Yu. I. Skovpen, E. P. Solodov, ...
متن کاملMeasurement of the branching ratios of the decays
From 56 days of data taking in 2002, the NA48/1 experiment observed 6316 Ξ0 → Σeνe candidates (with the subsequent Σ + → pπ0 decay) and 555 Ξ0 → Σ+eνe candidates with background contamination of 215 ± 44 and 136 ± 8 events, respectively. From these samples, the branching ratios BR(Ξ0 → Σeνe) = (2.51 ± 0.03stat±0.09syst)×10 and BR(Ξ0 → Σeνe) = (2.55±0.14stat±0.10syst)×10 were measured allowing t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics Letters B
سال: 2001
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(01)00936-4