arXiv subjects
Publications and source records attributed to Paolo Gandini.
In this talk, we present the latest experimental results on heavy flavour spectroscopy at the LHCb detector. The first observation of two baryonic resonances is reported in the $Ξ_b^{(-,0)} π^+π^-$ final states and a study of charmonium decays to $K_s^0 K π$ in $B \rightarrow (K_s^0 K π) K$ decays is presented.
The LHCb experiment is preparing for a major upgrade in 2018-2019. One of the key components in the upgrade is a new silicon tracker situated upstream of the analysis magnet of the experiment. The Upstream Tracker (UT) will consist of four planes of silicon strip detectors, with each plane covering an area of about 2 m$^2$. An important consideration of these detectors is their performance after they have been exposed to a large radiation dose. In this article we present test beam results of pre-prototype n-in-p and p-in-n sensors that have been irradiated with fluences up to $4.0\times10^{14}$ $n_{\rm eq}$ cm$^{-2}$.
We present experimental measurements of branching fraction and longitudinal polarization fraction in charmless hadronic B decays into vector, axial vector and tensor final states with the final dataset of \babar . Measurements of such kind of decays are a powerful tool both to test the Standard Model and search possible sources of new physics.