Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2000-08-18
Nucl.Phys.Proc.Suppl.96:31-35,2001
Physics
High Energy Physics
High Energy Physics - Experiment
10 pages, 3 figures, to appear in the Proceedings of the International Euroconference on Quantum Chromodynamics (QCD 00), Mont
Scientific paper
10.1016/S0920-5632(01)01103-3
We report results on two physics topics from the SLD experiment at the SLAC Linear Collider, using our full sample of 550,000 events of the type e+e- --> Z0 --> q-q(bar). The electron beam was polarized, enabling the quark and antiquark hemispheres to be tagged in each event. One physics topic is the first study of rapidities signed such that positive rapidity is along the quark rather than antiquark direction. Distributions of ordered differences in signed rapidity between pairs of particles are analyzed, providing the first direct observation of baryon number ordering along the q-q(bar) axis. The other topic is the first direct measurement of A_s, the parity-violating coupling of the Z0 to strange quarks, by measuring the left-right forward-backward production asymmetry in polar angle of the tagged s-quark. We obtain A_s = 0.895 +- 0.066(stat.) +- 0.062(syst.), which is consistent with the Standard Model and is currently the most precise measurement of this quantity.
No associations
LandOfFree
Light Quark Fragmentation in Polarized Z0 Decays at SLD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Light Quark Fragmentation in Polarized Z0 Decays at SLD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light Quark Fragmentation in Polarized Z0 Decays at SLD will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-555280