Aaltonen, T;
Abulencia, A;
Adelman, J;
Affolder, T;
Akimoto, T;
Albrow, MG;
Amerio, S;
... Zucchelli, S; + view all
(2007)
Observation and mass measurement of the baryon Xi(-)(b).
PHYS REV LETT
, 99
(5)
, Article 052002. 10.1103/PhysRevLett.99.052002.
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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).
| Type: | Article |
|---|---|
| Title: | Observation and mass measurement of the baryon Xi(-)(b) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.99.052002 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.99.052002 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | HADRONIC COLLISIONS, QUARK PRODUCTION, CROSS-SECTION, HEAVY |
| UCL classification: | UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/143022 |
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