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Title: | Measurement of the mass and width of the Ds1(2536)+ meson |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 19-Apr-2011 |
Publisher: | American Physical Society |
Abstract: | The decay width and mass of the D s 1 ( 2536 ) + meson are measured via the decay channel D + s 1 → D * + K 0 S using 385 fb − 1 of data recorded with the BABAR detector in the vicinity of the Υ ( 4 S ) resonance at the PEP-II asymmetric-energy electron-positron collider. The result for the decay width is Γ ( D + s 1 ) = 0.92 ± 0.03 ( stat . ) ± 0.04 ( syst . ) MeV . For the mass, a value of m ( D + s 1 ) = 2535.08 ± 0.01 ( stat . ) ± 0.15 ( syst . ) MeV / c 2 is obtained. The mass difference between the D + s 1 and the D * + is measured to be m ( D + s 1 ) − m ( D * + ) = 524.83 ± 0.01 ( stat . ) ± 0.04 ( syst . ) MeV / c 2 , representing a significant improvement compared to the current world average. The unnatural spin-parity assignment for the D + s 1 meson is confirmed. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.83.072003 |
It is part of: | Physical Review D, 2011, vol. 83, num. 7, p. 072003 |
URI: | http://hdl.handle.net/2445/131752 |
Related resource: | https://doi.org/10.1103/PhysRevD.83.072003 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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