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- mass is measured to be 5792.9±2.5(stat) ±1.7(syst)MeV/c2

T. Aaltonen, A. Abulencia, J. Adelman, T. Affolder, T. Akimoto, M. G. Albrow, et al. (2007). Observation and Mass Measurement of the Baryon Xi-_b. PHYSICAL REVIEW LETTERS, 99, 1-7 [10.1103/PhysRevLett.99.052002].

Observation and Mass Measurement of the Baryon Xi-_b

BRIGLIADORI, LUCA;CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;J. Zhou;ZUCCHELLI, STEFANO
2007

Abstract

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- mass is measured to be 5792.9±2.5(stat) ±1.7(syst)MeV/c2
2007
T. Aaltonen, A. Abulencia, J. Adelman, T. Affolder, T. Akimoto, M. G. Albrow, et al. (2007). Observation and Mass Measurement of the Baryon Xi-_b. PHYSICAL REVIEW LETTERS, 99, 1-7 [10.1103/PhysRevLett.99.052002].
T. Aaltonen; A. Abulencia; J. Adelman; T. Affolder; T. Akimoto; M. G. Albrow; S. Amerio; D. Amidei; A. Anastassov; K. Anikeev; A. Annovi; J. Antos; M....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/53700
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