Study of $D_{sJ}^{(\ast )+}$ mesons decaying to $D^{\ast +}{K}_{\mathrm{S}}^0$ and $D^{\ast 0}{K}^{+}$ final states

Abstract

A search is performed for $D_{sJ}^{(\ast )+}$ mesons in the reactions $pp\to D^{\ast +}{K}_{\mathrm{S}}^{0}X$ and $pp\to D^{\ast 0}{K}^{+}X$ using data collected at centre-of-mass energies of 7 and 8 TeV with the LHCb detector. For the $D^{\ast +}{K}_{\mathrm{S}}^0$ final state, the decays $D^{\ast +}\to D^0{\pi }^{+}$ with $D^0\to K^{-}{\pi }^{+}$ and $D^0\to K^{-}{\pi }^{+}{\pi }^{+}{\pi }^{-}$ are used. For $D^{\ast 0}{K}^{+}$, the decay $D^{\ast 0}\to D^0{\pi }^0$ with $D^0\to K^{-}{\pi }^{+}$ is used. A prominent $D_{s1}(2536{)}^{+}$ signal is observed in both $D^{\ast +}{K}_{\mathrm{S}}^0$ and $D^{\ast 0}{K}^{+}$ final states. The resonances $D_{s1}^{\ast }(2700{)}^{+}$ and $D_{s3}^{\ast }(2860{)}^{+}$ are also observed, yielding information on their properties, including spin-parity assignments. The decay $D_{s2}^{\ast }(2573{)}^{+}\to D^{\ast +}{K}_{\mathrm{S}}^0$ is observed for the first time, at a significance of 6.9 $\sigma$, and its branching fraction relative to the $D_{s2}^{\ast }(2573{)}^{+}\to D^{+}{K}_{\mathrm{S}}^0$ decay mode is measured.

26 pages, 9 figures, Submitted to JHEP, All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-052.html

References in corpus (8)

• PYTHIA 6.4 Physics and Manual
• Big-Bang Nucleosynthesis
• Observation of new resonances decaying to $D\pi$ and $D^{\ast }\pi$ in inclusive $e^{+}{e}^{-}$ collisions near $\sqrt{s}=$10.58 GeV
• Canonical Interpretation of the D_{sJ}(2860) and D_{sJ}(2690)
• $D_{sJ}(2860)$ resonance and the $s_{\ell }^P={\frac{5}{2}}^{-}$ $c\bar{s}$ ($c\bar{q}$) doublet
• D_{sJ}(2860) as the first radial excitation of the D_{s0}^*(2317)
• Identifying $D_{sJ}(2700)$ through its decay modes
• Dalitz plot analyses of $B^0\to D^{-}{D}^0{K}^{+}$ and $B^{+}\to {\overline{D}}^0{D}^0{K}^{+}$ decays

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