Effects of climate-induced tree-dieback on freshwater and Malaise trap communities in the Bavarian Forest National Park

International audienc

The CLIMTREE Project: Ecological and socioeconomic impacts of climate-induced tree diebacks in highland forests

International audienc

Observation of B(s)0→J/ψpp‾B^0_{(s)} \to J/\psi p \overline{p} decays and precision measurements of the B(s)0B^0_{(s)} masses

International audienceThe first observation of the decays B(s)0→J/ψpp¯ is reported, using proton-proton collision data corresponding to an integrated luminosity of 5.2  fb-1, collected with the LHCb detector. These decays are suppressed due to limited available phase space, as well as due to Okubo-Zweig-Iizuka or Cabibbo suppression. The measured branching fractions are B(B0→J/ψpp¯)=[4.51±0.40(stat)±0.44(syst)]×10-7, B(Bs0→J/ψpp¯)=[3.58±0.19(stat)±0.39(syst)]×10-6. For the Bs0 meson, the result is much higher than the expected value of O(10-9). The small available phase space in these decays also allows for the most precise single measurement of both the B0 mass as 5279.74±0.30(stat)±0.10(syst)  MeV and the Bs0 mass as 5366.85±0.19(stat)±0.13(syst)  MeV