2026-04-13T07:03:02Zhttps://recercat.cat/oai/requestoai:recercat.cat:2445/1317522025-12-05T16:47:15Zcom_2072_1057col_2072_478823col_2072_478917
RECERCAT
author
Garra Ticó, Jordi
author
Graugés Pous, Eugeni
author
BABAR Collaboration
2019-04-08T10:39:33Z2019-04-08T10:39:33Z2011-04-192019-04-08T10:39:33Z
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.
(c) American Physical Society, 2011 info:eu-repo/semantics/openAccess
Física de partícules
Experiments
Particle physics
Experiments
Measurement of the mass and width of the Ds1(2536)+ meson
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion