Publication Date:
2020-08-01
Description:
We measure the branching fractions for seven $$ {D}_s^{+} $$ D s + two-body decays to pseudo-scalar mesons, by analyzing data collected at $$ sqrt{s} $$ s = 4.178 ∼ 4.226 GeV with the BESIII detector at the BEPCII collider. The branching fractions are determined to be$$ {displaystyle egin{array}{c}mathcal{B}left({D}_s^{+}o {K}^{+}eta hbox{'}
ight)=left(2.68pm 0.17pm 0.17pm 0.08
ight)imes {10}^{-3}, {}mathcal{B}left({D}_s^{+}o eta hbox{'}{pi}^{+}
ight)=left(37.8pm 0.4pm 2.1pm 1.2
ight)imes {10}^{-3}, {}mathcal{B}left({D}_s^{+}o {K}^{+}eta
ight)=left(1.62pm 0.10pm 0.03pm 0.05
ight)imes {10}^{-3}, {}mathcal{B}left({D}_s^{+}o eta {pi}^{+}
ight)=left(17.41pm 0.18pm 0.27pm 0.54
ight)imes {10}^{-3}, {}mathcal{B}left({D}_s^{+}o {K}^{+}{K}_S^0
ight)=left(15.02pm 0.10pm 0.27pm 0.47
ight)imes {10}^{-3}, {}mathcal{B}left({D}_s^{+}o {K}_S^0{pi}^{+}
ight)=left(1.109pm 0.034pm 0.023pm 0.035
ight)imes {10}^{-3}, {}mathcal{B}left({D}_s^{+}o {K}^{+}{pi}^0
ight)=left(0.748pm 0.049pm 0.018pm 0.035
ight)imes {10}^{-3},end{array}} $$ B D s + → K + η ' = 2.68 ± 0.17 ± 0.17 ± 0.08 × 10 − 3 , B D s + → η ' π + = 37.8 ± 0.4 ± 2.1 ± 1.2 × 10 − 3 , B D s + → K + η = 1.62 ± 0.10 ± 0.03 ± 0.05 × 10 − 3 , B D s + → η π + = 17.41 ± 0.18 ± 0.27 ± 0.54 × 10 − 3 , B D s + → K + K S 0 = 15.02 ± 0.10 ± 0.27 ± 0.47 × 10 − 3 , B D s + → K S 0 π + = 1.109 ± 0.034 ± 0.023 ± 0.035 × 10 − 3 , B D s + → K + π 0 = 0.748 ± 0.049 ± 0.018 ± 0.035 × 10 − 3 , where the first uncertainties are statistical, the second are systematic, and the third are from external input branching fraction of the normalization mode $$ {D}_s^{+} $$ D s + → K+K−π+. Precision of our measurements is significantly improved compared with that of the current world average values.
Print ISSN:
1126-6708
Electronic ISSN:
1029-8479
Topics:
Physics
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