Study of D sJ (*) + mesons decaying to D ∗ + K S 0 and D *0 K + final states

R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov (+722 others)
2016 Journal of High Energy Physics  
A search is performed for D^(*)+_sJ mesons in the reactions pp → D^*+ K^0_ S 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^0_ S 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_s1(2536)^+ signal is observed in both D^*+ K^0_ S and D^*0 K^+ final states. The resonances D^*_s1(2700)^+ and
more » ... 0)^+ are also observed, yielding information on their properties, including spin-parity assignments. The decay D^*_s2(2573)^+ → D^*+ K^0_ S is observed for the first time, at a significance of 6.9 σ, and its branching fraction relative to the D^*_s2(2573)^+ → D^+ K^0_ S decay mode is measured.
doi:10.1007/jhep02(2016)133 fatcat:kgcxzgidqfag7ec23rwabgebfy