J an 1 99 8 SLAC - PUB - 7709 December 1 , 1997 Measurements of Hadronic Asymmetries in e + e − Collisions at LEP and SLD 1
ثبت نشده
چکیده
High precision experimental new electroweak results measured at the four LEP experiments and the SLD collaboration are discussed. Heavy quark (bb and cc) forward-backward asymmetries measured at LEP are presented along with polarized forward-backward and left-right asymmetries measured at SLD. The results are compared, and the combined averages are used to evaluate the Standard Model parameters.
منابع مشابه
ar X iv : h ep - e x / 98 12 00 8 v 2 5 D ec 1 99 8 SLAC – PUB – 8017 November 1998 Measurements of A LR and A lepton from SLD
This paper presents measurements of the leptonic asymmetries in Z decays measured with the SLD detector. Using a data sample of approximately 500,000 Z bosons, we report preliminary values for Ae, Aμ, and Aτ using both hadronic and leptonic decays. When combining all results, we report a preliminary value for the effective weak mixing angle sin θ W = 0.23110± 0.00029. Presented at the XXIX Inte...
متن کاملar X iv : h ep - e x / 98 01 00 1 v 1 1 J an 1 99 8 SLAC - PUB - 7654 September 26 , 1997 Experimental Studies of Electroweak Physics
Some experimental new Electroweak physics results measured at the LEP/SLD and the TEVATRON are discussed. The excellent accuracy achieved by the experiments still yield no significant evidence for deviation from the Standard Model predictions, or signal to physics beyond the Standard Model. The Higgs particle still has not been discovered and a low bound is given to its mass.
متن کاملar X iv : h ep - e x / 01 05 05 8 v 1 2 1 M ay 2 00 1 BRIS / HEP / 2001 - 01 ELECTROWEAK RESULTS FROM SLD
In this paper we present three updates to heavy flavour results from the SLD detector at SLAC. These results are preliminary, based on our full 1993-1998 dataset of 550 000 hadronic Z 0 decays produced with an average electron polarisation of 73%. The new measurements are of the hadronic branching fractions into heavy quarks (R b , Rc), the b quark asymmetry (A b) using jet charge, and the heav...
متن کاملar X iv : h ep - e x / 99 03 04 0 v 1 17 M ar 1 99 9 Measurements of A LR , A lepton and A b from SLD Jorge
We present the measurements of the leptonic asymmetries in Z decays measured by the SLD experiment at SLAC. A data sample of approximately 550,000 Z bosons are used for the preliminary measurement of ALR(Ae) and the leptonic final state measurements of Ae, Aμ and Aτ , representing the entire set of 1992-1998 SLD runs. When combining all results, a preliminary value for the effective weak mixing...
متن کاملar X iv : h ep - e x / 97 06 01 7 v 1 2 3 Ju n 19 97 SLAC – PUB – 7567 June 1997
We review recent B physics results obtained in polarized e + e − interactions at the SLC by the SLD experiment. The excellent 3-D vertexing capabilities of SLD are exploited to extract precise B + and B 0 d lifetimes, as well as measurements of the time evolution of B 0 d − B 0 d mixing.
متن کامل