A measurement of the charged and neutral B meson lifetimes using fully reconstructed decays
Abstract
Data collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC are used to study the lifetimes of the B0 and B+ mesons. The data sample consists of 7.4 fb-1 collected near the Y(4S) resonance. B0 and B+ mesons are fully reconstructed in several exclusive hadronic decay modes to charm and charmonium final states. The B lifetimes are determined from the flight length difference between the two B mesons which are pair-produced in the Y(4S) decay. The preliminary measurements of the lifetimes are tauB0 = 1.506+/-0.052(stat)+/-0.029(syst) ps, tauB+ = 1.602+/-0.049(stat)+/-0.035(syst) ps, and of their ratio is tauB+/tauB0 = 1.065+/-0.044(stat)+/-0.021(syst).
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.