Correlated inclusive Lambda anti-Lambda production in e+ e- annihilations at s**(1/2) approximately 10.5-GeV
May, 200220 pages
Published in:
- Phys.Rev.D 66 (2002) 052002
e-Print:
- hep-ex/0205085 [hep-ex]
Report number:
- CLNS-02-1787,
- CLEO-02-07
Experiments:
- CESR-CLEO-II
View in:
Citations per year
Abstract: (arXiv)
Using a 13.7/fb sample of continuum two-jet e+e- -> qqbar events collected with the CLEO detector, we have searched for correlations between / and /\bar particles, specifically in cases where the opening angle between the two particles is large and each has momentum 1 GeV/c. Such correlations may indicate the presence of baryon number conservation at the primary quark level. A previous CLEO study of /\c/\cbar correlations indicated direct, associated production of primary charmed baryons /\c: e+e- -> ccbar -> /\c/\cbar. That effect was not observed in Monte Carlo simulations. Our current search for similar direct, associated production of / baryons at the primary quark level (e+e- -> ssbar -> /\bar, e.g.) qualitatively indicates a similar effect, although it relies on a Monte Carlo dependent subtraction of background /\bar production (based on the default JETSET 7.4 event generator).- 14.20.Lq
- 13.65.+i
- 13.60.Rj
- 13.30.-a
- electron positron: colliding beams
- electron positron: annihilation
- quark: pair production
- quark: strangeness
- quark: fragmentation
- Lambda: electroproduction
References(12)
Figures(9)