Results 51 to 60 of about 2,785,087 (355)

Charm counting and semileptonic branching fraction [PDF]

open access: yesProceedings of 8th International Symposium on Heavy Flavour Physics — PoS(hf8), 1999
2-column 9 pages, uses JHEP package, presented at the 8th heavy flavor conference, South ...
openaire   +2 more sources

Measurement of the absolute branching fraction of $D^{+}\rightarrow\bar K^0 e^{+}\nu_{e}$ via $\bar K^0\to\pi^0\pi^0$ [PDF]

open access: yes, 2016
By analyzing 2.93 fb$^{-1}$ data collected at the center-of-mass energy $\sqrt s=3.773$ GeV with the BESIII detector, we measure the absolute branching fraction of the semileptonic decay $D^+\rightarrow\bar K^0 e^{+}\nu_{e}$ to be ${\mathcal B}(D ...
M. Ablikim   +421 more
semanticscholar   +1 more source

Measurement of the tau branching fractions into leptons [PDF]

open access: yesPhysics Letters B, 2001
Using data collected with the L3 detector near the Z resonance, corresponding to an integrated luminosity of 150pb-1, the branching fractions of the tau lepton into electron and muon are measured to be B(tau->e nu nu) = (17.806 +- 0.104 (stat.) +- 0.076 (syst.)) %, B(tau->mu nu nu) = (17.342 +- 0.110 (stat.) +- 0.067 (syst.)) %.
Acciarri, M.   +225 more
openaire   +12 more sources

Measurement of branching fractions of J/ψ and ψ(3686) decays to Σ+ and Σ ¯ $$ \overline{\Sigma} $$ −

open access: yesJournal of High Energy Physics, 2021
Using 1310.6 × 106 J/ψ and 448.1 × 106 ψ(3686) events collected with the BESIII detector, the branching fractions of J/ψ decays to Σ+ Σ ¯ $$ \overline{\Sigma} $$ − is measured to be (10.61 ± 0.04 ± 0.36) × 10 −4, which is significantly more precise than ...
The BESIII collaboration   +515 more
doaj   +1 more source

Measurement of the absolute branching fraction of Λc+→pKS0η decays

open access: yesPhysics Letters B, 2021
Based on 586 pb−1 of e+e− annihilation data collected at a center-of-mass energy of s=4.6GeV with the BESIII detector at the BEPCII collider, the absolute branching fraction of Λc+→pKS0η decays is measured for the first time to be B(Λc+→pKS0η)=(0.414±0 ...
M. Ablikim   +497 more
doaj   +1 more source

Observation of the semileptonic decay B + → p p ¯ μ + ν μ $$ {B}^{+}\to p\overline{p}{\mu}^{+}{\nu}_{\mu } $$

open access: yesJournal of High Energy Physics, 2020
The Cabibbo-suppressed semileptonic decay B + → p p ¯ μ + ν μ $$ {B}^{+}\to p\overline{p}{\mu}^{+}{\nu}_{\mu } $$ is observed for the first time using a sample of pp collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7 fb −1 at centre-
The LHCb collaboration   +906 more
doaj   +1 more source

Measurement of the inclusive branching fraction for ψ(3686)→KS0+anything

open access: yesPhysics Letters B, 2021
Using 5.9 pb−1 of e+e− annihilation data collected at center-of-mass energies from 3.640 to 3.701 GeV with the BESIII detector at the BEPCII Collider, we measure the observed cross sections of e+e−→KS0X (where X=anything).
M. Ablikim   +493 more
doaj   +1 more source

Observation of Ds+ K- and evidence for Ds+ pi- final states in neutral B decays [PDF]

open access: yes, 2002
We report the first observation of a B meson decay that is not accessible by a direct spectator process. The channel B0bar -> Ds+ K- is found in a sample of 85 timse 10^6 B Bbar events, collected with the Belle detector at KEKB, with a branching fraction
A. Bay   +207 more
core   +1 more source

Direct Decay of the Z^0 Boson into Ω_bcc and Ω_bbc Baryons [PDF]

open access: yesفیزیک کاربردی ایران
Electron-positron annihilation experiments are crucial tools for testing the Standard Model due to the simplicity and clarity of the initial state.
tawfigh Osati
doaj   +1 more source

Measurement of the B0 →d∗-π+π-π+ branching fraction [PDF]

open access: yes, 2016
Using a sample of (470.9 +- 2.8) x 10^6 BB-bar pairs, we measure the decay branching fraction B(B^0 -> D^*- pi^+ pi^- pi^+) = (7.26 +- 0.11 +- 0.31) x 10^-3, where the first uncertainty is statistical and the second is systematic. Our measurement will be
The BaBar Collaboration
semanticscholar   +1 more source

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