Study of D-(())(+)(sJ) mesons decaying to DK-+(S)0 and D*K-0(+) final states
A search is performed for D-sJ(()()+) mesons in the reactions pp -> D(+KSX)-X-0 and pp -> D*(K+X)-K-0 using data collected at centre-of-mass energies of 7 and 8 TeV with the LHCb detector. For the DK-+(S)0 final state, the decays D(+) -> D-0 pi(+) with D-0 -> K-pi(+) and D-0 -> K-pi(+)pi(+)pi(-) are used. For DK-0(+), the decay D(0) -> D-0 pi(0) with D-0 -> K-pi(+) is used. A prominent D-s1(2536)(+) signal is observed in both DK-+(S)0 and DK-0(+) final states. The resonances D*(s1)(2700)(+) and D*(s3)(2860)(+) are also observed, yielding information on their properties, including spin-parity assignments. The decay D*(s2)(2573)(+) -> D*(+) K-S(0) is observed for the first time, at a significance of 6.9 sigma, and its branching fraction relative to the D*(s2)(2573)(+) -> (D+KS0) decay mode is measured.
JHEP02(2016)133.pdf
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10-1007_JHEP02_2016_133.pdf
Publisher's version
openaccess
CC BY
890.69 KB
Adobe PDF
27a87b78c103f9ad7ae6736a64f0aaa1