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Measurement Of The Decay Amplitudes And Branching Fractions Of B → J/Ψ K* And B → J/Ψ K Decays, C. P. Jessop, Kenneth A. Bloom, Cleo Collaboration Dec 1997

Measurement Of The Decay Amplitudes And Branching Fractions Of B → J/Ψ K* And B → J/Ψ K Decays, C. P. Jessop, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Using data taken with the CLEO II detector at the Cornell Electron Storage Ring, we present the first full angular analysis in the color-suppressed modes B⁰ → J/Ψ K ^*0and B⁰ → J/Ψ K^*+. This leads to a complete determination of the decay amplitudes of these modes including the longitudinal polarization Γ_L/Γ= 0.52 ± 0.07 ± 0.04 and the P wave component │P│²= 0.16 ± 0.08 ± 0.04. In addition, we update the branching fractions for B → J/Ψ K and B → J/Ψ K …

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Study Of The Decay Τ^-→2Π^-Π⁺3Π⁰Ν_Τ, S. Anderson, Kenneth A. Bloom, Cleo Collaboration Nov 1997

Study Of The Decay Τ-→2Π-Π+3Π0ΝΤ, S. Anderson, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

The decay τ^-→2π^-π⁺3π⁰ν_τ has been studied with the CLEO II detector at the Cornell Electron Storage Ring. The branching fraction is measured to be (2.85 ± 0.56 ± 0.51) X 10^-4. The result is in good agreement with the isospin expectation but somewhat below the conserved-vectorcurrent prediction. We have searched for resonance substructure in the decay. Within the statistical precision, the decay is saturated by the channels τ^-→π^-2π⁰ων_τ, 2π^-π⁺ων_τ, and π^-2π⁰ων …

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Limit On The Two-Photon Production Of The Glueball Candidate F_J(2220) At The Cornell Electron Storage Ring, R. Godang, Kenneth A. Bloom, Cleo Collaboration Nov 1997

Limit On The Two-Photon Production Of The Glueball Candidate FJ(2220) At The Cornell Electron Storage Ring, R. Godang, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

We use the CLEO detector at the Cornell e⁺e^- storage ring, CESR, to search for the two-photon production of the glueball candidate f_J (2220) in its decay to K_sK_s. We present a restrictive upper limit on the product of the two-photon partial width and the K_sK_s branching fraction, (Γ_γγ B_{K_sK_s})_{f_J(2220)}. We use this limit to calculate a lower limit on the stickiness, which is a measure of the two-gluon coupling relative to the two-photon coupling. This limit on stickiness …

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Search For The Decay Τ^-→4Π^-3Π⁺(Π⁰)Ν_Τ, K. W. Edwards, Kenneth A. Bloom, Cleo Collaboration Nov 1997

Search For The Decay Τ-→4Π-3Π+(Π0)ΝΤ, K. W. Edwards, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

We have searched for the decay of the τ lepton into seven charged particles and zero or one π⁰. The data used in the search were collected with the CLEO II detector at the Cornell Electron Storage Ring (CESR) and correspond to an integrated luminosity of 4.61 fb^-. No evidence for a signal is found. Assuming all the charged particles are pions, we set an upper limit on the branching fraction B(τ^-→4π^-3π⁺(π⁰) ν_τ) < 2.4X10^-6 at the 90% confidence level. This limit represents a significant improvement …

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New Upper Limit On The Decay Η→E⁺E^-, T. E. Browder, Kenneth A. Bloom, Cleo Collaboration Nov 1997

New Upper Limit On The Decay Η→E+E-, T. E. Browder, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

We have searched for the rare decay of the η meson η→e⁺e^- using the CLEO II detector. The η’s were produced in e⁺e^- collisions with 10 GeV center-of-mass energy at the Cornell Electron Storage Ring (CESR). We find with 90% confidence the upper limit on the branching fraction B (η→e⁺e^-)<7.7×10^-5. The application of conventional elementary particle theory to this decay predicts a branching fraction of about 10^-9.

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Determination Of The Michel Parameters And The Τ Neutrino Helicity In Τ Decay, J. P. Alexander, Kenneth A. Bloom, Cleo Collaboration Nov 1997

Determination Of The Michel Parameters And The Τ Neutrino Helicity In Τ Decay, J. P. Alexander, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Using the CLEO II detector at the Cornell Electron Storage Ring operated at √s =10.6 GeV, we have determined the Michel parameters ρ, ξ, and δ in τ^±→l^±νν̅ decay as well as the τ neutrino helicity parameter h_vτ in τ^±→π^±π⁰ν decay. From a data sample of 3.02×106 produced τ pairs we analyzed events of the topologies e⁺e^-→τ⁺τ^-→(l^±νν̅)(π^±π⁰ν) and e⁺e^-→τ⁺τ^-→(π^±π⁰ν̅)(π^±π⁰ν). …

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Inclusive Decays B→Dx And B→D*X, L. Gibbons, Kenneth A. Bloom, Cleo Collaboration Oct 1997

Inclusive Decays B→Dx And B→D*X, L. Gibbons, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

We report new measurements of the differential and total branching ratios for inclusive B decay to D⁰, D⁺, and D*⁺ and the first measurement of the same quantities for inclusive B decay to D*⁰. Here B is the mixture of B_d and B_u from Υ(4S) decay. Furthermore, since more than one charm particle (or antiparticle) of the same kind can be produced in B decay, here ‘‘inclusive B branching ratio’’ is used to mean the average number of charm particles and their antiparticles of a certain species …

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First Observation Of Τ→3Πην_Τ And Τ→ F₁Πν_Τ Decays, T. Bergfeld, Kenneth A. Bloom, Cleo Collaboration Sep 1997

First Observation Of Τ→3ΠηνΤ And Τ→ F1ΠνΤ Decays, T. Bergfeld, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

We have observed new channels for τ decays with an η in the final state. We study 3-prong tau decays, using the η →γγ and η → 3π ⁰ decay modes and 1-prong decays with two π ⁰’s using the η →γγ channel. The measured branching fractions are B(τ^- → π^-π^-π⁺ην_τ) = (3. _-0.5^+0.6 ± 0.6) X 10^-4 and B(τ^- → π^-2π ⁰ην_τ) = (1.4 ± 0.6 ± 0.3) X 10^-4. We observe clear evidence for f_{1 …}

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Observation Of The Decay D_S⁺ → Ωπ⁺, R. Balest, Kenneth A. Bloom, Cleo Collaboration Aug 1997

Observation Of The Decay DS+ → Ωπ+, R. Balest, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Using e⁺e^- annihilation data collected by the CLEO II detector at CESR, we have observed the decay D_s⁺ → ωπ⁺. This final state may be produced through the annihilation decay of the i>D_s⁺, or through final state interactions. We find a branching ratio of γ(D_s⁺ → ωπ⁺)/γ(D_s⁺ →ηπ⁺) = 0.16±0.04±0.03, where the first error is statistical and the second is systematic.

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Search For Neutrinoless Τ Decays Involving Π⁰ Or Η Mesons, G. Bonvicini, Kenneth A. Bloom, Cleo Collaboration Aug 1997

Search For Neutrinoless Τ Decays Involving Π0 Or Η Mesons, G. Bonvicini, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

We have searched for lepton flavor violating decays of the τ lepton using final states with an electron or a muon and one or two π⁰ or η mesons but no neutrinos. The data used in the search were collected with the CLEO II detector at the Cornell Electron Storage Ring (CESR) and correspond to an integrated luminosity of 4.68 fb^-1. No evidence for signals was found, resulting in much improved limits on the branching fractions for the one-meson modes and the first upper limits for the two-meson modes.

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Search For The Decays B⁰ → D ^(*)+D ^(*)-, D. M. Asner, Kenneth A. Bloom, Cleo Collaboration Aug 1997

Search For The Decays B0 → D ()+D ()-, D. M. Asner, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Using the CLEO-II data set we have searched for the decays B⁰ → D^(*)+D^(*)-. We observe one candidate signal event for the decay B⁰ → D^*+D^*- with an expected background of 0.022 ± 0.011 events. This yield corresponds to a branching fraction of B(B⁰ → D^*+D^*-) = [5.317_-3.7^+7.1(stat) ± 1.0(syst)] x 10^-4 and an upper limit of B(B⁰ → D^*+D^*-) < 2.2 X 10^-3 at the 90% C.L. We see no significant excess of signal above …

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A Measurement Of The Michel Parameters In Leptonic Decays Of The Tau, R. Ammar, Kenneth A. Bloom, Cleo Collaboration Jun 1997

A Measurement Of The Michel Parameters In Leptonic Decays Of The Tau, R. Ammar, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

We have measured the spectral shape Michel parameters ρ and η using leptonic decays of the τ, recorded by the CLEO II detector. Assuming e-μ universality in the vectorlike couplings, we find ρ_eμ = 0.735 ± 0.013 ± 0.008 and η_eμ = 20.015 ± 0.061 ± 0.062, where the first error is statistical and the second systematic. We also present measurements for the parameters for e and μ final states separately.

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Analyses Of D⁺→K_S⁰K⁺ And D⁺ → K_S⁰Π⁺, M. Bishai, Kenneth A. Bloom, Cleo Collaboration Apr 1997

Analyses Of D+→KS0K+ And D+ → KS0Π+, M. Bishai, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Using data collected with the CLEO II detector at the Cornell Electron Storage Ring, we present new measurements of the branching fractions for D⁺→K_SK⁺and D⁺ → K_Sπ⁺ . These results are combined with other CLEO measurements to extract the ratios of isospin amplitudes and phase shifts for D → KK and D → K π.

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Search For Neutrinoless Τ Decays: Τ→Eγ And Τ→Μγ, K. W. Edwards, Kenneth A. Bloom, Cleo Collaboration Apr 1997

Search For Neutrinoless Τ Decays: Τ→Eγ And Τ→Μγ, K. W. Edwards, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

A search for the lepton-family-number-violating decays τ→eγ and τ→μγ has been performed using CLEO II data. No evidence of a signal has been found and the corresponding upper limits are B(τ→eγ) < 2.7X10^-6 and B (τ→μγ),3.0 X 10^-6 at 90% C.L.

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Full-Text Articles in Physics

Measurement Of The Decay Amplitudes And Branching Fractions Of B → J/Ψ K* And B → J/Ψ K Decays, C. P. Jessop, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Study Of The Decay Τ-→2Π-Π+3Π0ΝΤ, S. Anderson, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Limit On The Two-Photon Production Of The Glueball Candidate FJ(2220) At The Cornell Electron Storage Ring, R. Godang, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Search For The Decay Τ-→4Π-3Π+(Π0)ΝΤ, K. W. Edwards, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

New Upper Limit On The Decay Η→E+E-, T. E. Browder, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Determination Of The Michel Parameters And The Τ Neutrino Helicity In Τ Decay, J. P. Alexander, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Inclusive Decays B→Dx And B→D*X, L. Gibbons, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

First Observation Of Τ→3ΠηνΤ And Τ→ F1ΠνΤ Decays, T. Bergfeld, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Observation Of The Decay DS+ → Ωπ+, R. Balest, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Search For Neutrinoless Τ Decays Involving Π0 Or Η Mesons, G. Bonvicini, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Search For The Decays B0 → D ()+D ()-, D. M. Asner, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

A Measurement Of The Michel Parameters In Leptonic Decays Of The Tau, R. Ammar, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Analyses Of D+→KS0K+ And D+ → KS0Π+, M. Bishai, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Search For Neutrinoless Τ Decays: Τ→Eγ And Τ→Μγ, K. W. Edwards, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Full-Text Articles in Physics

Measurement Of The Decay Amplitudes And Branching Fractions Of B → J/Ψ K* And B → J/Ψ K Decays, C. P. Jessop, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Study Of The Decay Τ-→2Π-Π+3Π0ΝΤ, S. Anderson, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Limit On The Two-Photon Production Of The Glueball Candidate FJ(2220) At The Cornell Electron Storage Ring, R. Godang, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Search For The Decay Τ-→4Π-3Π+(Π0)ΝΤ, K. W. Edwards, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

New Upper Limit On The Decay Η→E+E-, T. E. Browder, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Determination Of The Michel Parameters And The Τ Neutrino Helicity In Τ Decay, J. P. Alexander, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Inclusive Decays B→Dx And B→D*X, L. Gibbons, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

First Observation Of Τ→3ΠηνΤ And Τ→ F1ΠνΤ Decays, T. Bergfeld, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Observation Of The Decay DS+ → Ωπ+, R. Balest, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Search For Neutrinoless Τ Decays Involving Π0 Or Η Mesons, G. Bonvicini, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Search For The Decays B0 → D (*)+D (*)-, D. M. Asner, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

A Measurement Of The Michel Parameters In Leptonic Decays Of The Tau, R. Ammar, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Analyses Of D+→KS0K+ And D+ → KS0Π+, M. Bishai, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Search For Neutrinoless Τ Decays: Τ→Eγ And Τ→Μγ, K. W. Edwards, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

Search For The Decays B0 → D ()+D ()-, D. M. Asner, Kenneth A. Bloom, Cleo Collaboration