%0 Journal Article %@ 0031-9007 %A Lancaster, M %A Malik, S %A Nurse, EL %A Waters, DCDFC %D 2007 %F discovery:9877 %J Physical Review Letters %K Observation, Mass, Measurement, Baryon %P 052002- %T Observation and Mass Measurement of the Baryon $Xi_b^-$ %U https://discovery.ucl.ac.uk/id/eprint/9877/ %V 99