Search for the decayBs0→D*∓π±

Studies of the resonance components in the $$B_s$$ decays into charmonia plus kaon pair

“…for which these states are shown to be generated from the meson-meson interaction. In Refs [13][14][15], the K + K − S-wave contribution in the φ(1020) resonance region is estimated to be of the order 1 − 10%, in agreement with previous measurements from LHCb [1,16], CDF [17], and ATLAS [18]. The significant S-wave effects may affect measurements of the CP violating phase β s [13,14,19].…”

“…Among them, the largest component comes from the φ(1020) in a P -wave configuration [2]. Several Collaborations [1,3,4] have presented a measurement of the B s → J/ψφ(1020) mode with φ(1020) decays to K + K − . The current world averages of the absolute branching ratio B(B s → J/ψφ(1020)) can reach the order of 10 −3 .…”

“…The current world averages of the absolute branching ratio B(B s → J/ψφ(1020)) can reach the order of 10 −3 . Another P -wave resonance φ(1680), whose contribution has more than 2 statistical standard deviation (σ) significance, is also included by the LHCb Collaboration [1] in its best fit model. Two well known scalar resonances, the f 0 (980) and f 0 (1370), are observed in the K + K − mass spectrum by LHCb [1], which is the only data set available so far for the S-wave resonant structures.Contributions from D-wave resonances are known to be non-negligible in this decay.…”

“…Another P -wave resonance φ(1680), whose contribution has more than 2 statistical standard deviation (σ) significance, is also included by the LHCb Collaboration [1] in its best fit model. Two well known scalar resonances, the f 0 (980) and f 0 (1370), are observed in the K + K − mass spectrum by LHCb [1], which is the only data set available so far for the S-wave resonant structures.Contributions from D-wave resonances are known to be non-negligible in this decay. The first observation of the decay sequence B s → J/ψf ′ 2 (1525), f ′ 2 (1525) → K + K − , was recently reported by the LHCb Collaboration [5], and later confirmed by the D0 Collaboration [6].…”

Observation of Overlapping Spin-1 and Spin-3D¯0K−Resonances at MassAaij1, Adeva2, Adinolfi3 et al. 2014Phys. Rev. Lett.Self Cite9013720View full textAdd to dashboardCite

“…[20,21] and are optimized using the B 0 → D 0 π þ π − decay as a control channel. Discrimination between signal and background categories is achieved primarily with a neural network [22] …”