The decay width and mass of the D-s1(2536)(+) meson are measured via the decay channel D-s1(+) -> (D*+KS0) using 385 fb(-1) of data recorded with the BABAR detector in the vicinity of the Gamma(4S) resonance at the PEP-II asymmetric-energy electron-positron collider. The result for the decay width is Gamma(D-s1(+)) = 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/c(2) 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/c(2), representing a significant improvement compared to the current world average. The unnatural spin-parity assignment for the D-s1(+) meson is confirmed.

Measurement of the mass and width of the D-s1(2536)(+) meson / J. P., L., V., P., E., P., V., T., J. G., T., E., G., M., M., D. A., M., A., P., M., P., G., E., B., S., L., S., D. N., B., L. T., K., Yu G., K., G., L., I. L., O., H., K., T., S., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 83:(2011), p. 072003. [10.1103/physrevd.83.072003]

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

CAVOTO, Gianluca;FACCINI, Riccardo;FERRONI, Fernando;
2011

Abstract

The decay width and mass of the D-s1(2536)(+) meson are measured via the decay channel D-s1(+) -> (D*+KS0) using 385 fb(-1) of data recorded with the BABAR detector in the vicinity of the Gamma(4S) resonance at the PEP-II asymmetric-energy electron-positron collider. The result for the decay width is Gamma(D-s1(+)) = 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/c(2) 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/c(2), representing a significant improvement compared to the current world average. The unnatural spin-parity assignment for the D-s1(+) meson is confirmed.
2011
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the mass and width of the D-s1(2536)(+) meson / J. P., L., V., P., E., P., V., T., J. G., T., E., G., M., M., D. A., M., A., P., M., P., G., E., B., S., L., S., D. N., B., L. T., K., Yu G., K., G., L., I. L., O., H., K., T., S., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 83:(2011), p. 072003. [10.1103/physrevd.83.072003]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/440287
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