Results 31 to 40 of about 226,926 (195)

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 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

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

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

Search for the Higgs boson decay to a pair of electrons in proton-proton collisions at s=13TeV

open access: yesPhysics Letters B, 2023
A search is presented for the Higgs boson decay to a pair of electrons (Image 1) in proton-proton collisions at s=13TeV. The data set was collected with the CMS experiment at the LHC between 2016 and 2018, corresponding to an integrated luminosity of ...
A. Tumasyan   +2391 more
doaj   +1 more source

New results on the search for Bs0 → µ+µ− from LHCb

open access: yesEPJ Web of Conferences, 2013
A search for the rare decays Bs0 → µ+µ− and B0 → μ+μ− is performed with the LHCb experiment using 1.1 fb−1 of data collected at √s = 8 TeV and 1.0 fb−1 of data collected at √s = 7 TeV.
Albrecht Johannes
doaj   +1 more source

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

Search for the decay h c → π 0 J/ψ

open access: yesJournal of High Energy Physics, 2022
A search for the decay h c → π 0 J/ψ is performed using a sample of hc produced in the reaction e + e − → π + π − h c . The data samples were collected with the BESIII detector at center-of-mass energies between 4.189 and 4.437 GeV, corresponding to a ...
The BESIII collaboration   +515 more
doaj   +1 more source

Measurement of $\mathcal B(\psi(3770)\to\gamma \chi_{c1})$ and search for $\psi(3770)\to\gamma \chi_{c2}$

open access: yes, 2015
We report a measurement of the branching fraction of $\psi(3770)\to\gamma\chi_{c1}$ and search for the transition $\psi(3770)\rightarrow \gamma \chi_{c2}$ based on 2.92~fb$^{-1}$ of $e^+e^-$ data accumulated at $\sqrt{s}=3.773$~GeV with the BESIII ...
Ablikim, M.   +415 more
core   +1 more source

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