B and D Spectroscopy at LEP

TL;DR

This paper reports on LEP experiments studying B and charmed meson spectroscopy, supporting HQET predictions, and presenting new measurements of meson properties and production, with some conflicting evidence on specific meson states.

Contribution

It provides new experimental data on B and charmed mesons, supporting HQET predictions and clarifying meson production and decay properties.

Findings

Support for HQET predictions on B meson masses and widths

Observation of B_c candidate events consistent with predictions

Contradictory evidence regarding Dstarpr meson existence

Abstract

Results from the four LEP experiments ALEPH, DELPHI, L3, and OPAL on the spectroscopy of B and charmed mesons are presented. The predictions of Heavy Quark Effective Theory (HQET) for the masses and the widths of excited L=1 B mesons are supported by a new measurement from L3. A few B_c candidate eve nts have masses consistent with the recent CDF observation and the predictions. New results on Ddstar production and B -> Ddstar l nu are also presented. The evidence for a Dstarpr meson reported recently by DELPHI is not supported by OPAL and CLEO.