Measurements of $Z^0$ to Heavy-quark couplings at SLD
| dc.creator | Iwasaki, Masako | |
| dc.creator | Collaboration, representing the SLD | |
| dc.date | 1999-05-22 | |
| dc.date.accessioned | 2026-07-07T03:37:55Z | |
| dc.date.available | 2026-07-07T03:37:55Z | |
| dc.description | We present measurements of $Z^0$ to heavy-quark coupling electroweak parameters, $R_b$, $R_c$, and parity-violation parameter $A_c$, from SLD. The measurements are based on approximately 550k hadronic $Z^0$ events collected in 1993-98. Obtained preliminary results of $R_b$ and $R_c$ measurements are $R_b = 0.2159 \pm 0.0014 \pm 0.0014$ and $R_c = 0.1685 \pm 0.0047 \pm 0.0043$. In the $A_c$ measurement, we use four methods to determine the initial-quark charge: combined Kaon charge and Vertex charge, lepton, exclusively reconstructed D*, D-mesons, and a new method using inclusive soft-pion from D*. The preliminary results of these four methods were combined to give $A_c = 0.634 \pm 0.027$. | |
| dc.description | 10 pages 5 figures Latex, Contribution to DPF '99 | |
| dc.identifier | https://arxiv.org/abs/hep-ex/9905040 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/9905040 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/38314 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurements of $Z^0$ to Heavy-quark couplings at SLD | |
| dc.type | text |