No abstract

No abstract

The first observation of the decay B 0 → D 0D0 K þ π − is reported using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb −1 collected by the LHCb experiment in 2011, 2012 and 2016. The measurement is performed in the full kinematically allowed range of the decay outside of the D Ã− region. The ratio of the branching fraction relative to that of the control channel B 0 → D Ã− D 0 K þ is measured to be R ¼ ð14.2 AE 1.1 AE 1.0Þ%, where the first uncertainty is statistical and the second is systematic. The absolute branching fraction of B 0 → D 0D0 K þ π − decays is thus determined to be BðB 0 → D 0D0 K þ π − Þ ¼ ð3.50 AE 0.27 AE 0.26 AE 0.30Þ × 10 −4 , where the third uncertainty is due to the branching fraction of the control channel. This decay mode is expected to provide insights to spectroscopy and the charm-loop contributions in rare semileptonic decays.

No abstract

Wireless Body Area Network (WBAN) is a small-scaled sensor network consisting of a series of medical devices attributed to, around, or implanted in a human body, providing continuous monitoring by different sensors to collect vital signals or motion and GPS. This paper proposes an effective routing algorithm to balance the energy consumption within a WBAN in order to prolong the overall lifetime of the network, called dynamic routing algorithm (DRA) and its improved version based on a multipath choice mechanism. Theoretical analysis and simulation result are demonstrated to evaluate the performance of the algorithm and represent that energy consumption of sensors in the network is reasonably scheduled and life cycle of the network is significantly extended. The routing algorithm proposed in this paper may be potentially applied to significantly save energy of multiple types of sensors during vital signals aggregating and transmitting under the WBAN.