We report the observation and measurement of the mass of the bottom, strange baryon Xi(-)(b) through the decay chain Xi(-)(b)-->J/psi Xi(-), where J/psi-->mu(+)mu(-), Xi(-)-->Lambda pi(-), and Lambda-->p pi(-). A signal is observed whose probability of arising from a background fluctuation is 6.6 x 10(-15), or 7.7 Gaussian standard deviations. The Xi(-)(b) mass is measured to be (5792.9 +/- 2.5(stat) +/- 1.7(syst)) MeV/c(2).

T., A., A., A., J., A., T., A., T., A., M. G., A., et al. (2007). Observation and mass measurement of the baryon Xi(-)(b). PHYSICAL REVIEW LETTERS, 99(5), 052002-1-052002-7 [10.1103/PhysRevLett.99.052002].

Observation and mass measurement of the baryon Xi(-)(b)

CIOCCI, MARIA AGNESE;
2007-01-01

Abstract

We report the observation and measurement of the mass of the bottom, strange baryon Xi(-)(b) through the decay chain Xi(-)(b)-->J/psi Xi(-), where J/psi-->mu(+)mu(-), Xi(-)-->Lambda pi(-), and Lambda-->p pi(-). A signal is observed whose probability of arising from a background fluctuation is 6.6 x 10(-15), or 7.7 Gaussian standard deviations. The Xi(-)(b) mass is measured to be (5792.9 +/- 2.5(stat) +/- 1.7(syst)) MeV/c(2).
2007
T., A., A., A., J., A., T., A., T., A., M. G., A., et al. (2007). Observation and mass measurement of the baryon Xi(-)(b). PHYSICAL REVIEW LETTERS, 99(5), 052002-1-052002-7 [10.1103/PhysRevLett.99.052002].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/36314
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo