Measurement of the and B− meson lifetimes
نویسندگان
چکیده
منابع مشابه
Measurement of the ratio of B+ and B0 meson lifetimes.
The ratio of the B+ and B0 meson lifetimes was measured using data collected in 2002-2004 by the D0 experiment in Run II of the Fermilab Tevatron Collider. These mesons were reconstructed in B-->mu(+)nuD(*-)X decays, which are dominated by B0 and B-->mu(+)nuD 0X decays, which are dominated by B+. The ratio of lifetimes is measured to be tau(+)/tau(0)=1.080+/-0.016(stat)+/-0.014(syst).
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متن کاملImproved measurement of the B − and B 0 meson lifetimes using semileptonic decays ∗
The lifetimes of the B and B0 mesons are measured using the partially reconstructed semileptonic decays B → DlνX, where D is either a D0 or D∗+ meson. The data were collected by the CDF detector at the Fermilab Tevatron collider during 1992-1995 and correspond to about 110 pb−1 of p̄p collisions at √ s = 1.8 TeV. We measure decay lengths and extract the lifetimes to be τ(B) = 1.637 ± 0.058 0.045...
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The lifetimes of charmed mesons have been measured using 2.75 fb of data collected with the Belle detector at KEKB. Each candidate is fully reconstructed to identify the flavor of the charmed meson. The lifetimes are measured to be τ(D) = (414.8±3.8±3.4) fs, τ(D) = (1040 −22 ± 18) fs and τ(D + s ) = (479 +17 −16 +6 −8) fs, where the first error is statistical and the second error is systematic....
متن کاملMeasurement of the D0, D+, and Ds+ meson lifetimes.
We report measurements of the lifetimes of the D, D+, and D,+ (F+) mesons produced in e+e collisions at a center-of-mass energy of 29 GeV. The decay vertex distribution in the processes D ~K rr+, D+~E n+n+, and . D+~Prr+ were made using a vertex chamber installed in the High Resolution Spectrometer at the SLAC storage ring PEP. The measured lifetimes are ~ 0=(4.4+1.0%0.6)X10 ' s, w +=(9.2+,'3+1...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2000
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(00)01093-5