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42 papers · 2 filters
Measurement of Lepton Momentum Moments in the Decay bar{B} \to X \ell \barν and Determination of Heavy Quark Expansion Parameters and |V_cb|
A. H. Mahmood
We measure the primary lepton momentum spectrum in B-bar to X l nu decays, for p_l > 1.5 GeV/c in the B rest frame. From this, we calculate various moments of the spectrum. In part…
Simultaneous Measurement of the B0 Meson Lifetime and Mixing Frequency with B0 --> D*- l+ nu Decays
the BABAR Collaboration, B. Aubert
We measure the B0 lifetime τ_{B0} and the B0-B0bar oscillation frequency Δm_d with a sample of approximately 14,000 exclusively reconstructed B0 --> D*- l+ nu signal events, select…
Measurement of the B0 meson lifetime with partial reconstruction of B0 --> D*- pi+ and B0 --> D*- rho+ decays
The BABAR Collaboration, B. Aubert
The neutral meson lifetime is measured with the data collected by the BaBar detector at the PEP-II storage ring during the years 1999 and 2000, with a total integrated luminosi…
First Observation of the Exclusive Decays Lambda_c to Lambda pi+pi+pi-pi0 and Lambda_c to Lambda omega pi+
D. Cronin-Hennessy
Using data recorded by the CLEO III detector at CESR, we report on the first measurements of the branching fractions for decays of the Lambda_c^+ charmed baryon into (Lambda pi+ pi…
A Measurement of the B0 -> J/psi pi+pi- Branching Fraction
B. Aubert
We present a measurement of the branching fraction for the decay of the neutral meson into the final state . The data set contains approximately 56 million $B\bar{B}…
Search for time-dependent B0s - B0s-bar oscillations using a vertex charge dipole technique
K. Abe
We report a search for B0s - B0s-bar oscillations using a sample of 400,000 hadronic Z0 decays collected by the SLD experiment. The analysis takes advantage of the electron beam po…
Observation of a 1750 MeV/c^2 Enhancement in the Diffractive Photoproduction of K^+K^-
FOCUS Collaboration
Using the FOCUS spectrometer with photon beam energies between 20 and 160 \gev, we confirm the existence of a diffractively photoproduced enhancement in at 1750 \mevcc wit…
Search for Neutrinoless tau Decays Involving the K_S^0 Meson
S. Chen, CLEO Collaboration
We have searched for lepton flavor violating decays of the tau lepton with one or two KS0 mesons in the final state. The data used in the search were collected with the CLEO II and…
Measurement of the Branching Fraction for Inclusive Semileptonic B Meson Decays
B. Aubert
A largely model-independent measurement of the inclusive electron momentum spectrum and branching fraction for semileptonic decays of B mesons is presented based on data recorded a…
Measurement of Exclusive B Decays to Final States Containing a Charmed Baryon
S. A Dytman, CLEO Collaboration
Using data collected by the CLEO detector in the Upsilon(4S) region, we report new measurements of the exclusive decays of B mesons into final states of the type Lambda_c^+ p-bar n…
Improved Direct Measurement of the Parity-Violation Parameter A_b Using a Mass Tag and Momentum-Weighted Track Charge
SLD Collaboration, Kenji Abe
We present an improved direct measurement of the parity-violation parameter A_b in the Z boson-b quark coupling using a self-calibrating track-charge technique applied to a sample…
Charm System Tests of CPT and Lorentz Invariance with FOCUS
J. M. Link
We have performed a search for CPT violation in neutral charm meson oscillations. While flavor mixing in the charm sector is predicted to be small by the Standard Model, it is stil…
Observation of the Decay Omega_C^0 --> Omega- e+ nu_e
R. Ammar, CLEO Collaboration
Using the CLEO detector at the Cornell Electron Storage Ring, we have observed the Omega_c (css ground state) in the decay Omega_c -> Omega- e+ nu. We find a signal of 11.4 +- 3.8…
Simultaneous Measurement of the B0 Meson Lifetime and Mixing Frequency with B0 --> D*- l+ nu_l Decays
B. Aubert, The BABAR Collaboration
We measure the B0 lifetime tau_B0 and the B-Bbar oscillation frequency Deltam_d with a sample of approximately 14,000 exclusively reconstructed B0 -> D*- l+ nu_l signal events, sel…
Measurement of Inclusive B --> psi Production
S. Anderson
Using the combined CLEO II and CLEO II.V data sets of 9.1 fb^{-1} at the Upsilon(4S), we measure properties of Psi mesons produced directly from decays of the B meson, where ``B''…
New Measurements of the D+ to K* mu nu Form Factor Ratios
The FOCUS Collaboration
Using a large sample of D+ to K- pi+ mu+ nu decays collected by the FOCUS photoproduction experiment at Fermilab, we present new measurements of two semileptonic form factor ratios…
A Search for Time-Dependent B0s-B0sbar Oscillations Using Exclusively Reconstructed Ds+/- Mesons
SLD Collaboration
A search for Bs0-Bs0bar oscillations is performed using a sample of 400,000 hadronic Z0 decays collected by the SLD experiment. The Bs0 candidates are reconstructed in the Bs0 to D…
Dalitz Analysis of D^0 --> K_S^0 pi+ pi-
H. Muramatsu, CLEO Collaboration
In e^+e^- collisions using the CLEO detector we have studied the decay of the D^0 to the final state K_S^0 pi^+ pi^- with the initial flavor of the D^0 tagged in charged D^* decay.…
Measurements of Branching Fractions and CP-violating Asymmetries in B0->pi+ pi-, K+ pi-, K+ K- Decays
The BABAR Collaboration, B. Aubert
We present measurements of branching fractions and CP-violating asymmetries for neutral B meson decays to two-body final states of charged pions and kaons based on a sample of abou…
Measurement of the CP-Violating Asymmetry Amplitude sin2beta
B. Aubert
We present results on time-dependent CP-violating asymmetries in neutral B decays to several CP eigenstates. The measurements use a data sample of about 88 million Y(4S) --> B Bbar…
A new measurement of the lifetime
J. M. Link
Using data collected by the Fermilab experiment FOCUS, we measure the lifetime of the charmed baryon (Ξ_{c}^{o}) using the decay channels (Ξ_{c}^{o}\to Ξ^{-}π^{+}) and (Ξ_{c}^{o}\t…
New Measurements of the D+ to K*munu/k2pi and Ds to phimunu/phipi Branching ratios
The Focus Collaboration
Using a large sample of charm semileptonic decays collected by the FOCUS photoproduction experiment at Fermilab, we present new measurements of two semileptonic branching ratios. W…
Measurement of the D+ and Ds+ decays into K+K-K+
The FOCUS Collaboration
We present the first clear observation of the doubly Cabibbo suppressed decay D+ --> K-K+K+ and the first observation of the singly Cabibbo suppressed decay Ds+ --> K-K+K+. These s…
Measurement of B(B- to D0 pi-) and B(barB0 to D+ pi-) and Isospin Analysis of B to D pi Decays
S. Ahmed, CLEO Collaboration
We present new measurements of branching fractions for the color-favored decays B^- --> D^0 pi^- and Bbar^0 --> D^+ pi^-. Using 9.67 x 10^6 BBbar pairs collected with the CLEO dete…