Frankfurt 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 5: Schwerionenkollisionen und QCD Phasen
HK 5.4: Vortrag
Montag, 17. März 2014, 14:45–15:00, HZ 7
Full kinematic reconstruction of B+ mesons with the upgraded ALICE inner tracker — •Johannes Stiller for the ALICE collaboration — Physikalisches Insitut, Heidelberg
During the second long shutdown of the LHC in 2018, the ALICE experiment will undergo major detector upgrades, including the installation of a new high-granularity silicon pixel inner tracker in the central barrel. A single-hit resolution of 4 µm close to the interaction point and a readout rate capability of up to 50 kHz in Pb-Pb collisions will allow new and unique measurements in the heavy-quark sector. In this talk we focus on the performance of full kinematic reconstruction down to lowest pT in the channel B+ → D0π+ and D0 → K+π− with branching ratios of 0.5 % and 3.9 % respectively, using detailed Monte Carlo simulations of high-multiplicity Pb–Pb collisions. Topologic and kinematic criteria are used to select the rare signal. Furthermore, the track rotation method is used to improve the background statistics estimate in order to give a first outlook on the expected signal-to-background ratio and statistical significance.