We report measurements of the charm-anticharm production asymmetries for Λc+, Σc++, Σ c0, Σc++*, Σ c0*, and Λc+(2625) baryons from the Fermilab photoproduction experiment FOCUS (E831). These asymmetries are integrated over the region where the spectrometer has good acceptance. In addition, we have obtained results for the photoproduction asymmetries of the Λc baryons as functions of pL, pT2, and xF. The integrated asymmetry for Λc+ production, (σΛc+ - σΛc-)/(σΛc+ + σ Λc-), is 0.111 ± 0.018 ± 0.012, significantly different from zero. The asymmetries of the excited states are consistent with the Λc asymmetry.
|Original language||English (US)|
|Number of pages||10|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Feb 12 2004|
ASJC Scopus subject areas
- Nuclear and High Energy Physics