We report the observation and measurement of the mass of the bottom, strange baryon Xi(b)- through the decay chain Xi(b)- -->J/psiXi-, where J/psi-->mu+mu-, Xi- -->Lambdapi-, and Lambda-->ppi-. 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/c2.
Observation and mass measurement of the baryon Xib-. Publishing Authors By Initials
Observation and mass measurement of the baryon Xib-. Journal Published:
PUBLICATION TYPE: Research Support, U.S. Gov't,
Journal: Physical review letters
VOLUME: 99
Page Numbers: 052002
Journal Abbreviation: Phys. Rev. Lett.
ISSN: 0031-9007
DAY: 3
MONTH: 08
YEAR: 2007
Observation and mass measurement of the baryon Xib-. Information
Number of References:
LANGUAGE: eng
NlmUniqueID: 401141
Observation and mass measurement of the baryon Xib-. Keywords Mesh Terms:
KEYWORDS:
MESH TERMS:
Chemical & Substance for Abstract: Observation and mass measurement of the baryon Xib-. Information
Substance Name:
Registry Number:
Grant and Affiliation Information for Observation and mass measurement of the baryon Xib-.
AFFILIATION: Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.
Country: United States
AGENCY:
GRANT:
ACRONYM:
MEDLINETA: Phys Rev Lett
REFSOURCE:
DATABASENAME:
ACCESSION NUMBER:
Number Hits: 0
Observation and mass measurement of the baryon Xib- Related Publications