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http://hdl.handle.net/2445/131828
Title: | Measurement of the D*(2010)+ natural linewidth and the D*(2010)+-D0 mass difference |
Author: | Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Massa (Física) Particle physics Experiments Mass (Physics) |
Issue Date: | 9-Sep-2013 |
Publisher: | American Physical Society |
Abstract: | We measure the mass difference, Δ m 0 , between the D ∗ ( 2010 ) + and the D 0 and the natural linewidth, Γ , of the transition D ∗ ( 2010 ) + → D 0 π + . The data were recorded with the BABAR detector at center-of-mass energies at and near the Υ ( 4 S ) resonance, and correspond to an integrated luminosity of approximately 477 fb − 1 . The D 0 is reconstructed in the decay modes D 0 → K − π + and D 0 → K − π + π − π + . For the decay mode D 0 → K − π + we obtain Γ = ( 83.4 ± 1.7 ± 1.5 ) keV and Δ m 0 = ( 145425.6 ± 0.6 ± 1.8 ) keV , where the quoted errors are statistical and systematic, respectively. For the D 0 → K − π + π − π + mode we obtain Γ = ( 83.2 ± 1.5 ± 2.6 ) keV and Δ m 0 = ( 145426.6 ± 0.5 ± 2.0 ) keV . The combined measurements yield Γ = ( 83.3 ± 1.2 ± 1.4 ) keV and Δ m 0 = ( 145425.9 ± 0.4 ± 1.7 ) keV ; the width is a factor of approximately 12 times more precise than the previous value, while the mass difference is a factor of approximately 6 times more precise. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.88.052003 |
It is part of: | Physical Review D, 2013, vol. 88, num. 5, p. 052003 |
URI: | http://hdl.handle.net/2445/131828 |
Related resource: | https://doi.org/10.1103/PhysRevD.88.052003 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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629021.pdf | 1.21 MB | Adobe PDF | View/Open |
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