Study of D sJ (*) + mesons decaying to D ∗ + K S 0 and D * 0 K + final states
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Journal of High Energy Physics（2016）
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摘要
bstract A search is performed for D sJ (*) + mesons in the reactions pp → D ∗ + K S 0 X and pp → D *0 K + X using data collected at centre-of-mass energies of 7 and 8 TeV with the LHCb detector. For the D ∗ + K S 0 final state, the decays D *+ → D 0 π + with D 0 → K − π + and D 0 → K − π + π + π − are used. For D *0 K + , the decay D *0 → D 0 π 0 with D 0 → K − π + is used. A prominent D s 1 (2536) + signal is observed in both D ∗ + K S 0 and D *0 K + final states. The resonances D s 1 * (2700) + and D s 3 * (2860) + are also observed, yielding information on their properties, including spin-parity assignments. The decay D s 2 * (2573) + → D ∗ + K S 0 is observed for the first time, at a significance of 6 . 9 σ , and its branching fraction relative to the D s 2 * (2573) + → D + K S 0 decay mode is measured.
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Hadron-Hadron scattering, Charm physics
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