Observation and mass measurement of the baryon Ξb-

Observation and mass measurement of the baryon Ξb-

We report the observation and measurement of the mass of the bottom, strange baryon Ξb- through the decay chain Ξb-→J/ψΞ-, where J/ψ→μ+μ-, Ξ-→Λπ-, and Λ→pπ-. A signal is observed whose probability of arising from a background fluctuation is 6.6×10-15, or 7.7 Gaussian standard deviations. The Ξb- mas...

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Bibliographic Details
Main Authors: Aaltonen, T, Abulencia, A, Adelman, J, Affolder, T, Akimoto, T, Albrow, MG, Amerio, S, Amidei, D, Anastassov, A, Anikeev, K, Annovi, A, Antos, J, Aoki, M, Apollinari, G, Arisawa, T, Artikov, A, Ashmanskas, W, Attal, A, Aurisano, A, Azfar, F, Azzi-Bacchetta, P, Azzurri, P, Bacchetta, N, Badgett, W, Barbaro-Galtieri, A
Format: Journal article
Language:English
Published: 2007

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