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Showing 1 to 20 of 41 for “"branching fraction"”.
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Measurements of the absolute branching fraction of Λc+ → pK-π+ and the relative branching fraction of Bu+ → p π+ π+ Σc(2520)--.
… A measurement of the absolute Λc+ → pK-π+ branching fraction was performed, in a model independent way and for the first time in a hadronic environment, on data recorded by the LHCb experiment during the years 2011 and 2012, corresponding to an integrated luminosity of 3fb-1 . The branching …
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A measurement of the branching fraction B .* at CLEO
Submitted by Elias Lopez (erlopez2@illinois.edu) on 2012-11-01T19:40:37Z No. of bitstreams: 1 Williams_Jeremy.pdf: 2753664 bytes, checksum: cf6332d03703b91d90cac20c38ff9d4f (MD5)
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Electron Identification and Measurement of the Inclusive Semileptonic Branching Fraction of B Mesons at the BABAR Experiment
Ein Algorithmus zur Identifizierung von Elektronen mit dem BABAR Detektor wird entwickelt. Basierend auf Spuren, deren Teilchenidentität aus rein kinematischen Überlegungen gefolgert werden kann, wird für Impulse zwischen 0.5 und 2.5 GeV/c die Selektionseffizienz für Elektronen zu 90% bestimmt. Im …
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A Measurement of the Branching Fraction B(positive Strange D Meson Decays to Meson Positive Pion) at CLEO
… a model-independent measurement of the ratio of branching fractions BD+s→ fp+ /BD0→K +p- by partially reconstructing the decay B0→D*+s D*- . Using 8.9fb-1 of on-resonance data collected with the CLEO II detector at CESR and the known value of BD0→K +p- , I determine BD+s→ …
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Measurement of the Branching Fraction and Search for Direct CP-Violation in the Radiative Decay B to K*Gamma with the BABAR Detector
Die hier vorgestellte Untersuchung des radiativen elektroschwachen "Pinguin"-Zerfalls B->K*(892)Gamma, der durch den "Schleifen"-Übergang b->sGamma stattfindet, stellt einen wichtigen Test des Standardmodells und einen Kandidaten für die Suche nach Neuer Physik dar. Der …
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Measurement of the Partial Branching Fraction for Inclusive Semileptonic B Meson Decays to Light Hadrons B->Xu l nu and an Improved Determination of the Quark-Mixing Matrix Element |V_ub|
… Using these kinematic quantities, the partial branching fraction, $\Delta BR(B \to X_u e \nu)$, unfolded for detector effects, is measured to be $\Delta BR(E_e>2.0 GeV, s_h^{max}<3.52 GeV^2) = (3.33 \pm 0.18 \pm 0.21) \times 10^{-4} in the $\Upsilon(4S)$ and \Delta \tilde{\BR}(\tilde …
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First Measurement of B(ξc0 → Π−λ+c )
<p>The first measurement of the branching fraction of the Ξc0 baryon in its decay to π− and Λ+c hadrons, B(Ξc0 → π−Λ+c ), is presented. This measurement was conducted with the LHCb detector, located on the Large Hadron Collider, using 13 TeV proton-proton collisions. There have been a number of …
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Measurements of $B \to \mu^+ \mu^-$ decays using the LHCb experiment
… energies of 7, 8 and 13 TeV, respectively. The branching fractions of the very rare $B^{0} \to \mu^{+} \mu^{-}$ and $B_{s}^{0} \to \mu^{+} \mu^{-}$ decays and the effective lifetime of $B_{s}^{0} \to \mu^{+} \mu^{-}$ decays are precisely predicted by the Standard Model and are sensitive to …
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Observation of the Ξ_b^-→Λ_b^0 π^- decay and measurement of B(Ξ_b^-→Λ_b^0 π^-)
… observation of this decay. The relative branching fraction is measured to be f(Ξ−b)/f(Λ0b)*B(Ξ−b → Λ0b π−) = (6.35 ± 0.70 ± 0.47) × 10^(−4), where f(Ξ−b) and f(Λ0b) are the fragmentation fractions, and B(Ξ−b → Λ0b π−) is the branching fraction, and the uncertainties are statistical and …
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Studies of the inclusive semileptonic decays of the b-hadrons
… periods, the inclusive b-hadron semileptonic branching fraction is measured to be B R b→ℓ % =10.75+/-0.15stat +/-0.28syst -0.24+0.43model . Along with the semileptonic branching fraction, the branching fractions for the cascade mode, b→c→ℓ , and the upper-vertex mode, …
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Measurement of bar{B0} Meson Properties Via Partial Reconstruction of the Decay bar{B0} -> D*+ l- ar{nu}
… data and the averaged B meson semileptonic branching fraction through inclusive lepton momentum spectrum obtained by previous CLEO analysis, we measure the B0 and B- semileptonic branching fraction to be (10.78 +/- 0.60 +/- 0.69)% and (10.25 +/- 0.57 +/- 0.65)% respectively, which yields the …
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A study of short-lived deuterium and short-lived deuterium* mesons
… or upper limits of the cross section times branching fraction are presented for $D\sbsp{s}{+}\to\phi\pi\sp+$, K$\sp{\*0}$K$\sp+$, non-resonant K$\sp+$K$\sp-\pi\sp+$, $\phi\pi\sp+\pi\sp0$, $\phi\rho\sp+$, $\eta\pi\sp+$, $\omega\pi\sp+$, and $\eta\sp\prime\pi\sp+$. The relative branching …
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Search the decay of the B meson to two leptons at the Belle Experiment
… and improve the upper limit on the measured branching fraction. When applied to 85 million BB events collected at the Belle experiment in Tsukuba, Japan, the resulting upper limits on branching fractions were 8.8×10⁻⁸ for B⁰ → e⁺e⁻, 1.0×10⁻⁷ for B⁰ → μ⁺μ⁻, and 8.5×10⁻⁸ for B⁰ → e±μ∓" at the …
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Determination of the CKM ratio $|V_{ub}|/|V_{cb}|$ using semileptonic $B_c^{+}$ decays at LHCb
… signal $B_c^{+} \to D^{(*)0}\mu^+ \nu_{\mu}$ branching fraction is measured relative to the normalisation decay, $B_c^{+} \to J/\psi \,\mu^+ \nu_{\mu}$. The branching fraction ratio is found to be $\begin{align*}\frac{\mathcal{B}(B_c^{+} \to D^{(*)0}\mu^+ \nu_{\mu})}{\mathcal{B}(B_c^{+} \to …
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Measurement of the CKM Matrix Element |Vub| with B -> rho e ny Decays at BABAR
The branching fraction for B -> rho e nu decays and the CKM matrix element |Vub| is measured with semileptonic exclusive B-meson decays using approximately 55 million Upsilon(4S) -> BBbar decays collected during the years 2000 and 2001 with the BABAR detector. The result is Br(B0 -> rho- …
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D(0) Decays From Electron-Positron Collisions: Precision, Rare and Substructure Results
… of the ratio of the D0 → K-pi +pi0 branching fraction to that of D 0 → K-pi+ is performed resulting in the best measurement to date. Second, a detailed high statistics study of the underlying resonant structure of the three body decay, D0 → K -pi+pi0, is carried out. The …
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Dº decays from e+e- collisions: precision, rare and substructure results
… measurement of the ratio of the Dº → K-π+πº branching fraction to that of Dº → K-π+ is performed resulting in the best measurement to date. Second, a detailed high statistics study of the underlying resonant structure of the three body decay, Dº → K-π+πº, is carried out. The resulting Dalitz …
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Analysis of Neutral D Meson Two-Body Decays to a Neutral Kaon and a Neutral Pion
… I present an analysis method to measure this branching fraction asymmetry, R(D0) ≡ B(D0→K0S π0)−B(D0→K0L π0)/(B(D0→K0Sπ0)+B(D0→K0Lπ0)), utilizing e+e− → cc events in the Belle dataset.
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Measurement of |vcb| Using the Semileptonic Decay Λb → Λcμνμ
… This method also provides a measurement of the branching fraction B(Λ0b → Λ+c μ−νμ) using well-measured properties of B-meson decays.</p>
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A Topological Search for Beyond the Standard Model Light Bosons Decaying into Muon Pairs with the CMS Detector at the CERN LHC
… light bosons in proton-proton collisions, the branching fraction of a new light boson decaying to muon pairs, and the detector acceptance. The result is interpreted in the context of two illustrative benchmark scenarios: the next-to-minimal supersymmetric standard model, and dark supersymmetry. …
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