The LHCb collaboration has submitted its 500th publication! The first LHCb paper was submitted in August 2010, and since then 50 to 70 papers were submitted per year. All LHCb papers are accessible on the arXiv and are published Open Access.
The 500th paper reports sophisticated, multidimensional analysis through which the quantum numbers of several excited charmed mesons are determined. The charmed mesons were studied through the patterns they produce in certain decays of beauty mesons: B–→D*+π–π–. The so-called Dalitz plot (image) and an analysis of angular distributions were used to measure the quantum numbers of several excited charmed mesons that can decay into a D*+π– pair.