The decay width and mass of the Ds1(2536)+ meson are measured via the decay channel D+s1→D*+K0S using 385  fb−1 of data recorded with the BABAR detector in the vicinity of the Υ(4S) resonance at the PEP-II asymmetric-energy electron-positron collider. The result for the decay width is Γ(D+s1)=0.92±0.03(stat.)±0.04(syst.)  MeV. For the mass, a value of m(D+s1)=2535.08±0.01(stat.)±0.15(syst.)  MeV/c2 is obtained. The mass difference between the D+s1 and the D*+ is measured to be m(D+s1)−m(D*+)=524.83±0.01(stat.)±0.04(syst.)  MeV/c2, representing a significant improvement compared to the current world average. The unnatural spin-parity assignment for the D+s1 meson is confirmed.

Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Garra Tico, J., Grauges, E., et al. (2011). Measurement of the mass and width of the D(s1)(2536)(+) meson. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 83(7), 1-14 [10.1103/PhysRevD.83.072003].

Measurement of the mass and width of the D(s1)(2536)(+) meson

PATRIGNANI, CLAUDIA;
2011

Abstract

The decay width and mass of the Ds1(2536)+ meson are measured via the decay channel D+s1→D*+K0S using 385  fb−1 of data recorded with the BABAR detector in the vicinity of the Υ(4S) resonance at the PEP-II asymmetric-energy electron-positron collider. The result for the decay width is Γ(D+s1)=0.92±0.03(stat.)±0.04(syst.)  MeV. For the mass, a value of m(D+s1)=2535.08±0.01(stat.)±0.15(syst.)  MeV/c2 is obtained. The mass difference between the D+s1 and the D*+ is measured to be m(D+s1)−m(D*+)=524.83±0.01(stat.)±0.04(syst.)  MeV/c2, representing a significant improvement compared to the current world average. The unnatural spin-parity assignment for the D+s1 meson is confirmed.
2011
Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Garra Tico, J., Grauges, E., et al. (2011). Measurement of the mass and width of the D(s1)(2536)(+) meson. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 83(7), 1-14 [10.1103/PhysRevD.83.072003].
Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Milanes, D. A.; Palano, A.; Pappagallo, M.; Eigen,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/537537
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