We have studied hadronic four-body decays of D+ and D+s mesons with a KS in the final state using data recorded during the 1996-1997 fixed-target run of the Fermilab high energy photoproduction experiment FOCUS. We report a new branching ratio measurement of Γ(D+ → KSK−π+π+)/Γ(D+ → KSπ+π+π−) = 0.0768 ± 0.0041 ± 0.0032. We make the first observation of three new decay modes with branching ratios Γ(D+ → KSK+π+π−)/Γ(D+ → KSπ+π+π−) = 0.0562 ± 0.0039 ± 0.0040, Γ(D+ → KSK+K−π+)/Γ(D+ → KSπ+π+π−) = 0.0077 ± 0.0015 ± 0.0009, and Γ(D+s → KSK+π+π−)/Γ(D+s → KSK−π+π+) = 0.586 ± 0.052 ± 0.043, where in each case the first error is statistical and the second error is systematic.

Link, J., Reyes, M., Yager, P., Anjos, J., Bediaga, I., Gobel, C., et al. (2001). Measurement of the Branching Ratios of D+ and D+s Hadronic Decays to Four-Body Final States Containing a KS. PHYSICAL REVIEW LETTERS, 87(16), 1-4 [10.1103/PhysRevLett.87.162001].

Measurement of the Branching Ratios of D+ and D+s Hadronic Decays to Four-Body Final States Containing a KS

Moroni L;Gianini G;
2001

Abstract

We have studied hadronic four-body decays of D+ and D+s mesons with a KS in the final state using data recorded during the 1996-1997 fixed-target run of the Fermilab high energy photoproduction experiment FOCUS. We report a new branching ratio measurement of Γ(D+ → KSK−π+π+)/Γ(D+ → KSπ+π+π−) = 0.0768 ± 0.0041 ± 0.0032. We make the first observation of three new decay modes with branching ratios Γ(D+ → KSK+π+π−)/Γ(D+ → KSπ+π+π−) = 0.0562 ± 0.0039 ± 0.0040, Γ(D+ → KSK+K−π+)/Γ(D+ → KSπ+π+π−) = 0.0077 ± 0.0015 ± 0.0009, and Γ(D+s → KSK+π+π−)/Γ(D+s → KSK−π+π+) = 0.586 ± 0.052 ± 0.043, where in each case the first error is statistical and the second error is systematic.
Articolo in rivista - Articolo scientifico
Physics
English
2001
87
16
1
4
162001
none
Link, J., Reyes, M., Yager, P., Anjos, J., Bediaga, I., Gobel, C., et al. (2001). Measurement of the Branching Ratios of D+ and D+s Hadronic Decays to Four-Body Final States Containing a KS. PHYSICAL REVIEW LETTERS, 87(16), 1-4 [10.1103/PhysRevLett.87.162001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/455847
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