Showing papers by "Cristina Riccardi published in 1993"
University of Bologna1, University of Colorado Boulder2, Fermilab3, University of Illinois at Urbana–Champaign4, Northwestern University5, University of Notre Dame6, University of Puerto Rico at Mayagüez7, University of California, Davis8, University of South Carolina9, Vanderbilt University10, University of North Carolina at Chapel Hill11, Northern Kentucky University12, University of Tennessee13, Korea University14
TL;DR: In this paper, the authors report evidence of a narrow resonance at a mass of 2705.9 ± 3.3 ± 2.0 MeV/c2 in the final state Ω−π+ and the charge conjugate.
42 citations
36 citations
University of Bologna1, University of Colorado Boulder2, Fermilab3, University of Illinois at Urbana–Champaign4, University of Milano-Bicocca5, Northwestern University6, University of Notre Dame7, University of Puerto Rico8, University of California, Davis9, University of South Carolina10, Vanderbilt University11, University of North Carolina at Chapel Hill12, Northern Kentucky University13, University of Tennessee14, Korea University15
TL;DR: A measurement of the lifetime of the charmed strange baryon [Xi][sub [ital c]][sup 0] is presented in this article, where the data were accumulated by the Fermilab high energy photoproduction experiment E687.
Abstract: A measurement of the lifetime of the charmed strange baryon [Xi][sub [ital c]][sup 0] is presented. The data were accumulated by the Fermilab high energy photoproduction experiment E687. The measurement has been made using 42[plus minus]10 [Xi][sub [ital c]][sup 0][r arrow][Xi][sup [minus]][pi][sup +] decays. The lifetime of the [Xi][sub [ital c]][sup 0] is measured to be 0.101[sub [minus]0.017][sup +0.025][plus minus]0.005 ps and its mass is measured to be 2462.1[plus minus]3.1[plus minus]1.4 MeV/[ital c][sup 2].
16 citations
University of Colorado Boulder1, Fermilab2, University of Illinois at Urbana–Champaign3, University of Milano-Bicocca4, Northwestern University5, University of Notre Dame6, University of Puerto Rico7, University of California, Davis8, University of South Carolina9, Vanderbilt University10, University of North Carolina at Chapel Hill11, Northern Kentucky University12, University of Tennessee13, Korea University14
TL;DR: In this article, the mass and lifetime of the Ξ c + decaying into Ξ - π + π+π + is measured by the Fermilab high-energy photoproduction experiment E687 and the lifetime is measured to be 0.41 + 0.11 − 0.02 ps.
Abstract: Measurements of the mass and lifetime of Ξ c + decaying into Ξ - π + π + are presented. The data were accumulated by the Fermilab high-energy photoproduction experiment E687. The mass of the Ξ c + is measured to be 2464.4 ± 2.0 ± 1.4 MeV/c 2 and the lifetime is measured to be 0.41 +0.11-0.08 ± 0.02 ps
13 citations
University of Bologna1, University of Colorado Boulder2, Fermilab3, University of Illinois at Urbana–Champaign4, Northwestern University5, University of Notre Dame6, University of Puerto Rico at Mayagüez7, University of California, Davis8, University of South Carolina9, Vanderbilt University10, University of North Carolina at Asheville11, Northern Kentucky University12, University of Tennessee13, Korea University14
TL;DR: In this article, a new measurement of the D S + absolute branching ratio of Γ (D S + → φμ + ν ) / Γ( D S+ → all) = 0.031 ± 0.009 (stat 0.005 (sys) ± 0.004 (theoretical).
12 citations
University of Bologna1, University of California, Davis2, University of Colorado Boulder3, Fermilab4, University of Illinois at Urbana–Champaign5, Korea University6, University of North Carolina at Asheville7, Northern Kentucky University8, Northwestern University9, University of Notre Dame10, University of Puerto Rico at Mayagüez11, University of South Carolina12, University of Tennessee13, Vanderbilt University14
TL;DR: In this article, an analysis of data from the Fermilab high energy photoproduction experiment E687 for events containing fully and partially reconstructed pairs of charmed mesons is presented.
11 citations
TL;DR: In this article, a precise measurement of the [ital D][sub [ital s]][sup [plus minus] meson lifetime is reported, which is based on the Fermilab E687 fixed target run.
Abstract: A precise measurement of the [ital D][sub [ital s]][sup [plus minus]] meson lifetime is reported. The data were accumulated by the high energy photoproduction experiment E687 at Fermilab in the 1990--1991 fixed target run. The measurement has been done using 900 fully reconstructed [ital D][sub [ital s]][sup [plus minus]][r arrow][phi][pi][sup [plus minus]] decays. The lifetime of the [ital D][sub [ital s]][sup [plus minus]] meson is measured to be 0.475[plus minus]0.020[plus minus]0.007 ps.
11 citations
TL;DR: In this paper, a simple model based on the resolution of fluid balance equations permits one to explain the presence of a high percentage of H3+ (approximately 30%) ion minority concentrations in a weakly ionized hydrogen plasma.
Abstract: H3+ and H2+ ion minority concentrations in a weakly ionized hydrogen plasma are determined through the comparison between the measured wavelength of the neutralized in Bernstein waves and the theoretical one, given by the solution of the complete electrostatic dispersion relation A simple model based on the resolution of fluid balance equations permits one to explain the presence of a high percentage of H3+ ( approximately=30%)
8 citations
Istituto Nazionale di Fisica Nucleare1, University of Colorado Boulder2, Fermilab3, University of Illinois at Urbana–Champaign4, University of Milano-Bicocca5, Northwestern University6, University of Notre Dame7, University of Puerto Rico at Mayagüez8, University of California, Davis9, University of South Carolina10, Vanderbilt University11, Northern Kentucky University12, University of Tennessee13, Korea University14
TL;DR: In this paper, the authors report evidence for the Cabibbo-suppressed decay of the charm baryon Λ c + into the final state pK − K +, and the analysis is performed on data collected by high energy photoproduction experiment E687 during the 1990-1991 Fermilab fixed target run.
7 citations