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Related papers: Improved Direct Measurement of $A_b$ and $A_c$ at …

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We present an improved direct measurement of the parity-violation parameter A_b in the Z boson-b quark coupling using a self-calibrating track-charge technique applied to a sample enriched in Z -> b b-bar events via the topological…

High Energy Physics - Experiment · Physics 2008-11-26 SLD Collaboration , Kenji Abe

We present a direct measurement of the parity violation parameter Ab, derived from the left-right forward-backward asymmetry of b quarks tagged via leptons from semileptonic decays. The lepton identification algorithm combines information…

High Energy Physics - Experiment · Physics 2012-08-27 The SLD Collaboration

We present a direct measurement of the parity-violation parameter $A_c$ in the coupling of the $Z^0$ to $c$-quarks with the SLD detector. The measurement is based on a sample of 530k hadronic $Z^0$ decays, produced with a mean electron-beam…

High Energy Physics - Experiment · Physics 2008-11-26 The SLD Collaboration , K. Abe

Exploiting the manipulation of the SLC electron-beam polarization, we present precise direct measurements of the parity violation parameters A_c and A_b in the Z boson - c quark and Z boson - b quark coupling. Quark/antiquark discrimination…

High Energy Physics - Experiment · Physics 2008-11-26 SLD Collaboration , K. Abe

We present a direct measurement of the parity-violation parameter A_c. The measurement is based on 550k Z^0 decays collected by the SLD detector. The mean electron-beam polarization is |P_e| = 73 %. The tagging of c-quark events was…

High Energy Physics - Experiment · Physics 2007-05-23 The SLD Collaboration , K. Abe

We present direct measurements of the parity-violation parameters $A_b$, $A_c$, and $A_s$ at the $Z^0$ resonance with the SLD detector. The measurements are based on approximately 530k hadronic $Z^0$ events collected in 1993-98. Obtained…

High Energy Physics - Experiment · Physics 2007-05-23 Masako Iwasaki , representing the SLD Collaboration

We report new direct measurements of the $Z^0$-lepton coupling asymmetry parameters $A_e$, $A_{\mu}$ and $A_{\tau}$, with polarized $Z^0$'s collected by the SLD detector at the SLAC Linear Collider. The parameters are extracted from the…

High Energy Physics - Experiment · Physics 2007-05-23 The SLD Collaboration , K. Abe

We present direct measurements of the $Z^0$-lepton coupling asymmetry parameters, $A_e$, $A_\mu$, and $A_\tau$, based on a data sample of 12,063 leptonic $Z^0$ decays collected by the SLD detector. The $Z$ bosons are produced in collisions…

High Energy Physics - Experiment · Physics 2008-11-26 The SLD Collaboration , K. Abe , K. Abe , T. Akagi

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.…

High Energy Physics - Experiment · Physics 2007-05-23 Masako Iwasaki , representing the SLD Collaboration

We present a new preliminary measurement of the parity-violation parameter Ab using a self-calibrating vertex-charge technique. In the SLD experiment we observe hadronic decays of polarized Z bosons produced in collisions between…

High Energy Physics - Experiment · Physics 2007-05-23 The SLD Collaboration , K. Abe

We present an updated direct measurement of the parity-violating coupling of the Z boson to strange quarks, A_s, derived from the full SLD data sample of approximately 550,000 hadronic decays of Z bosons produced with a polarized electron…

High Energy Physics - Experiment · Physics 2007-05-23 The SLD Collaboration , K. Abe

We present a preliminary direct measurement of the parity violating coupling of the Z boson to strange quarks, A_s, derived from a sample of approximately 300,000 hadronic decays of Z bosons produced with a polarized electron beam and…

High Energy Physics - Experiment · Physics 2007-05-23 Hermann Staengle , representing the SLD Collaboration

We have made the first direct measurement of the parity-violating coupling of the Z^0 boson to the strange quark, A_s, using ~550,000 e^+e^- ->Z^0->hadrons events produced with a polarized electron beam and recorded by the SLD experiment.…

High Energy Physics - Experiment · Physics 2012-08-27 The SLD Collaboration

We present a new preliminary combination of measurements of the parity-violation parameter Ab made by the SLD collaboration using various experimental techniques. The techniques differ in detail, but in general a sample of bb events is…

High Energy Physics - Experiment · Physics 2007-05-23 The SLD Collaboration , K. Abe

To resolve the long-standing discrepancy between the precision measurement of bottom quark forward-backward asymmetry at LEP/SLC and the Standard Model prediction, we propose a novel method to probe the $Zb\bar{b}$ coupling by measuring the…

High Energy Physics - Phenomenology · Physics 2021-10-13 Bin Yan , Zhite Yu , C. -P. Yuan

Over the last decade, precise LEP and SLC measurements of electroweak coupling parameters at the Z0 pole have lead to tests of the Standard Model to unprecedented precision. This report presents a comprehensive review of these studies,…

High Energy Physics - Experiment · Physics 2016-11-23 B. A. Schumm

The forward-backward asymmetries of the processes e+e- -> Z -> b bbar and e+e- -> Z -> c cbar were measured from a sample of hadronic Z decays collected by the DELPHI experiment between 1993 and 1995. Enriched samples of b bbar and c cbar…

High Energy Physics - Experiment · Physics 2008-11-26 The DELPHI Collaboration , J. Abdallah

We present final measurements of the Z boson-lepton coupling asymmetry parameters Ae, Amu, and Atau with the complete sample of polarized Z bosons collected by the SLD detector at the SLAC Linear Collider. From the left-right production and…

High Energy Physics - Experiment · Physics 2008-11-26 The SLD Collaboration , K. Abe

We present selected new results on strong interaction physics from the SLD experiment at the SLAC Linear Collider (SLC), symmetry tests of b\bar{b}g vertex, the rate of secondary b\bar{b} production via gluon splitting, the B hadron energy…

High Energy Physics - Experiment · Physics 2007-05-23 Toshinori Abe , representing the SLD Collaboration

We present the measurements of the leptonic asymmetries in $Z^0$ decays measured by the SLD experiment at SLAC. A data sample of approximately 550,000 $Z^0$ bosons are used for the preliminary measurement of $A_{LR}(A_{e})$ and the leptonic…

High Energy Physics - Experiment · Physics 2007-05-23 Jorge P. Fernandez , representing the SLD Collaboration
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