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Showing 2001 · hep-exShow all

30 papers · 2 filters

hep-ex2001

Measurement of HQET Parameters and CKM Matrix Elements

David Urner

The determination of CKM matrix elements in the b-sector is discussed, emphasizing the new measurements of Vub and Vcb by the CLEO collaboration.

hep-ex2001★ 2 cited

CLEO Results: B Decays

David G. Cassel

Measurements of many Standard Model constants are clouded by uncertainties in nonperturbative QCD parameters that relate measurable quantities to the underlying parton-level proces…

hep-ex2001

Exploring the Charm Sector with CLEO-c

David Urner

The CLEO collaboration proposes to explore the charm sector starting early 2003. It is foreseen to collect on the order of 6 million D D-bar pairs, 300000 Ds Ds-bar pairs at thresh…

hep-ex2001★ 11 cited

Observation of Exclusive barB --> D() K- Decays

R. Mahapatra, CLEO Collaboration

We report the first observation of the exclusive decays \bar B\to D^{(*)}K^{*-}, using 9.66 x 10^{6} B\bar{B} pairs collected at the Υ(4S) with the CLEO detector. We measure the fo…

hep-ex2001★ 35 cited

Search for CP Violation in τ-> Kπν_τDecays

G. Bonvicini, CLEO Collaboration

We search and find no evidence for CP violation in tau decays into the K pi nu final state. We provide confidence limits on the imaginary part of the coupling constant Lambda, desc…

hep-ex2001★ 3 cited

Measurement of the Xi^+_c Lifetime

CLEO Collaboration, A. H. Mahmood

The Xi^+_c lifetime is measured using 9.0 fb^-1 of e+e- annihilation data collected on and just below the Upsilon(4S) resonance with the CLEO II.V detector at CESR. This is the fir…

hep-ex2001★ 66 cited

Lifetime Differences, direct CP Violation and Partial Widths in D0 Meson Decays to K+K- and pi+pi-

S. E. Csorna, CLEO Collaboration

We describe several measurements using the decays D0->K+K- and pi+pi-. We find the ratio of partial widths, Gamma(D0->K+K-)/Gamma(D0->pi+pi-), to be 2.96+/-0.16+/-0.15, where the f…

hep-ex2001★ 15 cited

Measurement of the Masses and Widths of the Sigma_c^++ and Sigma_c^0 Charmed Baryons

M. Artuso, CLEO Collaboration

Using data recorded by the CLEO II and CLEO II.V detector configurations at CESR, we report new measurements of the masses of the Sigma_c^{++} and Sigma_c^0 charmed baryons, and th…

hep-ex2001★ 1 cited

Testing CPT and Lorentz Invariance with the Anomalous Spin Precession of the Muon

M. Deile, Muon g-2 Collaboration

This article discusses tests of CPT and Lorentz invariance with data from the muon g-2 experiment at Brookhaven National Laboratory. According to an extension of the Standard Model…

hep-ex2001★ 43 cited

Observation of $B ˉ^{0} \to D^{0} π^{0}$ and $B ˉ^{0} \to D^{* 0} π^{0}$

CLEO Collaboration, T. E. Coan

We have studied the color-suppressed hadronic decays of neutral B mesons into the final states D(*)0 pi0. Using 9.67 million B-pairs collected with the CLEO detector, we observe th…

hep-ex2001★ 6 cited

Active cooling control of the CLEO detector using a hydrocarbon coolant farm

A. Warburton, K. Arndt, C. Bebek +11

We describe a novel approach to particle-detector cooling in which a modular farm of active coolant-control platforms provides independent and regulated heat removal from four rece…

hep-ex2001★ 162 cited

First Measurement of Gamma(D+) and Precision Measurement of m_D+ - m_D0

A. Anastassov

We present the first measurement of the D*+ width using 9/fb of e+ e- data collected near the Upsilon(4S) resonance by the CLEO II.V detector. Our method uses advanced tracking tec…

hep-ex2001★ 125 cited

First Measurement of $Γ (D * +)$

S. Ahmed

We present the first measurement of the D*+ width using 9/fb of e+e- data collected near the Upsilon(4S) resonance by the CLEO II.V detector. Our method uses advanced tracking tech…

hep-ex2001★ 86 cited

Hadronic Mass Moments in Inclusive Semileptonic B Meson Decays

D. Cronin-Hennessy, CLEO Collaboration

We have measured the first and second moments of the hadronic mass-squared distribution in B -> X_c l nu, for P(lepton) > 1.5 GeV/c. We find <M_X^2 - M_D[Bar]^2> = 0.251 +- 0.066 G…

hep-ex2001★ 428 cited

Branching Fraction and Photon Energy Spectrum b -> s gamma

S. Chen, CLEO Collaboration

We have measured the branching fraction and photon energy spectrum for the radiative penguin process b -> s gamma. We find BR(b -> s gamma) = (3.21 +- 0.43 +- 0.27 +0.18 -0.10) 10^…

hep-ex2001★ 4 cited

The Proposed CLEO-c Program and R Measurement Prospects

Lawrence K Gibbons

The proposed experimental program (CLEO-c) for a charm factory based on a modification of the Cornell Electron Storage Ring is summarized. The prospects for R measurements over the…

hep-ex2001★ 22 cited

Observation of Pseudoscalar and Axial Vector Resonances in pi- p -> K+ K- pi0 n at 18 GeV

E852 Collaboration, G. S. Adams

A new measurement of the reaction pi- p -> K+ K- pi0 n has been made at a beam energy of 18 GeV. A partial wave analysis of the K+ K- pi0 system shows evidence for three pseudoscal…

hep-ex2001★ 7 cited

Search for the Decay $Υ (1 S) \to γ η^{^{'}}$

S. J. Richichi

We report on a search for the radiative decay U(1S) -> gamma + eta' in 61.3 pb^-1 of data taken with the CLEO II detector at the Cornell Electron Storage Ring. Three decay chains w…

hep-ex2001★ 17 cited

Improved Upper Limits on the FCNC Decays $B \to K ℓ^{+} ℓ^{-}$ and $B \to K^{*} (892) ℓ^{+} ℓ^{-}$

S. Anderson, CLEO Collaboration

We have searched a sample of 9.6 million BBbar events for the flavor-changing neutral current decays B -> K l^+ l^- and B -> K^*(892) l^+ l^-. We subject the latter decay to the re…

hep-ex2001★ 30 cited

Search for the Familon via $B^{\pm} \to π^{\pm} X^{0}$ , $B^{\pm} \to K^{\pm} X^{0}$ , and $B^{0} \to K_{S}^{0} X^{0}$ Decays

R. Ammar, CLEO Collaboration

We have searched for the two-body decay of the B meson to a light pseudoscalar meson $h = π^{+}, K^{+}, K_{S}^{0}$ and a massless neutral weakly-interacting particle $X^{0}$ such as the fami…

hep-ex2001★ 4 cited

Search for the Decay B+ -> D*+ K0_S

A. Gritsan, . CLEO Collaboration

We report on a search for the decay B+ -> D*+ K0_S and its charge conjugate with the CLEO detector at the Cornell Electron Storage Ring (CESR). No candidates are found in 9.10/fb o…

hep-ex2001★ 4 cited

First Observation of barB0 to D*0 pi+pi+pi-pi- Decays

K. W. Edwards, CLEO Collaboration

We report on the observation of B0bar -> D*0 pi+ pi+ pi- pi- decays. The branching ratio is (0.30 +/- 0.07 +/- 0.06)%. Interest in this particular mode was sparked by Ligeti, Luke…

hep-ex2001★ 29 cited

Rate Measurement of $D^{0} \to K^{+} π^{-} π^{0}$ and Constraints on $D^{0} - D^{0}$ Mixing

G. Brandenburg, CLEO Collaboration

We present an observation and rate measurement of the decay D0 -> K+pi-pi0 produced in 9/fb of e+e- collisions near the Upsilon(4S) resonance. The signal is inconsistent with an up…

hep-ex2001★ 27 cited

Experimental Investigation of the Two-Photon Widths of the $χ_{c 0}$ and the $χ_{c 2}$ Mesons

B. I. Eisenstein, CLEO Collaboration

Using 12.7 $f b^{- 1}$ of data collected with the CLEO detector at CESR, we observed two-photon production of the $c c ˉ$ states $χ_{c 0}$ and $χ_{c 2}$ in their decay to $π^+ π^- π…

Measurement of HQET Parameters and CKM Matrix Elements

CLEO Results: B Decays

Exploring the Charm Sector with CLEO-c

Observation of Exclusive barB --> D(*) K*- Decays

Search for CP Violation in τ-> Kπν_τDecays

Measurement of the Xi^+_c Lifetime

Lifetime Differences, direct CP Violation and Partial Widths in D0 Meson Decays to K+K- and pi+pi-

Measurement of the Masses and Widths of the Sigma_c^++ and Sigma_c^0 Charmed Baryons

Testing CPT and Lorentz Invariance with the Anomalous Spin Precession of the Muon

Observation of Bˉ0→D0π0 and Bˉ0→D∗0π0

Active cooling control of the CLEO detector using a hydrocarbon coolant farm

First Measurement of Gamma(D*+) and Precision Measurement of m_D*+ - m_D0

First Measurement of Γ(D∗+)

Hadronic Mass Moments in Inclusive Semileptonic B Meson Decays

Branching Fraction and Photon Energy Spectrum b -> s gamma

The Proposed CLEO-c Program and R Measurement Prospects

Observation of Pseudoscalar and Axial Vector Resonances in pi- p -> K+ K- pi0 n at 18 GeV

Search for the Decay Υ(1S)→γη′

Improved Upper Limits on the FCNC Decays B→Kℓ+ℓ− and B→K∗(892)ℓ+ℓ−

Search for the Familon via B±→π±X0, B±→K±X0, and B0→KS0​X0 Decays

Search for the Decay B+ -> D*+ K0_S

First Observation of barB0 to D*0 pi+pi+pi-pi- Decays

Rate Measurement of D0→K+π−π0 and Constraints on D0−D0 Mixing

Experimental Investigation of the Two-Photon Widths of the χc0​ and the χc2​ Mesons

Observation of Exclusive barB --> D() K- Decays

Observation of $B ˉ^{0} \to D^{0} π^{0}$ and $B ˉ^{0} \to D^{* 0} π^{0}$

First Measurement of Gamma(D+) and Precision Measurement of m_D+ - m_D0

First Measurement of $Γ (D * +)$

Search for the Decay $Υ (1 S) \to γ η^{^{'}}$

Improved Upper Limits on the FCNC Decays $B \to K ℓ^{+} ℓ^{-}$ and $B \to K^{*} (892) ℓ^{+} ℓ^{-}$

Search for the Familon via $B^{\pm} \to π^{\pm} X^{0}$ , $B^{\pm} \to K^{\pm} X^{0}$ , and $B^{0} \to K_{S}^{0} X^{0}$ Decays

Rate Measurement of $D^{0} \to K^{+} π^{-} π^{0}$ and Constraints on $D^{0} - D^{0}$ Mixing

Experimental Investigation of the Two-Photon Widths of the $χ_{c 0}$ and the $χ_{c 2}$ Mesons