HEPData Search

The cross-sections and the forward-backward charge asymmetries of muon and tau pairs produced ine+e− collisions at$\sqrt s= 35 GeV$ have been measured by the JADE Collaboration. The cross-sections,$\sigma _\mu(\sqrt s= GeV) = 69.79 \pm 1.35 \pm 1.40 pb$ and$\sigma _\mu(\sqrt s= GeV) = 71.72 \pm 1.48 \pm 1.61 pb$, are in agreement with the QED α3 prediction. The charge asymmetries areAμ=−(9.9±1.5±0.5)% andAτ=−(8.1±2.0±0.6)% in agreement with the value −9.2% predicted by the standard model, usingMZ=91.0 GeV and sin2θW=0.230.

1 data table match query

Table 2

No description provided.

CROSS-SECTION ASYMMETRY OF THE gamma n ---> pi- p REACTION BY POLARIZED PHOTONS IN THE THIRD AND FOURTH RESONANCE REGIONS

Adamian, F.V. ; Akopian, G.G. ; Galumian, P.I. ; et al.

EFI-722-37-84-YEREVAN, 1984.

Inspire Record 206944 DOI 10.17182/hepdata.18433

None

5 data tables match query

Table 1

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First Measurement of the T-odd Correlation between the Z0 Spin and the Three-jet Plane Orientation in Polarized Z0 Decays to Three Jets

The SLD collaboration Abe, K. ; Abt, I. ; Ahn, C.J. ; et al.

Phys.Rev.Lett. 75 (1995) 4173-4177, 1995.

Inspire Record 400920 DOI 10.17182/hepdata.19601

We present the first measurement of the correlation between the $Z^0$ spin and the three-jet plane orientation in polarized $Z^0$ decays into three jets in the SLD experiment at SLAC utilizing a longitudinally polarized electron beam. The CP-even and T-odd triple product $\vec{S_Z}\cdot(\vec{k_1}\times \vec{k_2})$ formed from the two fastest jet momenta, $\vec{k_1}$ and $\vec{k_2}$, and the $Z^0$ polarization vector $\vec{S_Z}$, is sensitive to physics beyond the Standard Model. We measure the expectation value of this quantity to be consistent with zero and set 95\% C.L. limits of $-0.022 < \beta < 0.039$ on the correlation between the $Z^0$-spin and the three-jet plane orientation.

1 data table match query

Table 1

Asymmetry extracted from formula: (1/SIG(Q=3JET))*D(SIG)/D(COS(OMEGA)) = 9/16*[(1-1/3*(COS(OMEGA))**2) + ASYM*Az*(1-2*Pmis(ABS(COS(OMEGA))))*COS(OMEGA)], where OMEGA is polar angle of [k1,k2] vector (jet-plane normal), Pmis is the p robability of misassignment of of jet-plane normal, Az is beam polarization. Jets were reconstructed using the 'Durham' jet algorithm with a jet-resol ution parameter Yc = 0.005.

Polarized Bhabha Scattering and a Precision Measurement of the Electron Neutral Current Couplings

The SLD collaboration Abe, K. ; Abt, I. ; Ahn, C.J. ; et al.

Phys.Rev.Lett. 74 (1995) 2880-2884, 1995.

Inspire Record 376916 DOI 10.17182/hepdata.19647

We present the first measurement of the left-right asymmetry in Bhabha scattering with a polarized electron beam. The effective electron vector and axial vector couplings to the Z0 are extracted from a combined analysis of the polarized Bhabha scattering data and the left-right asymmetry previously published by this collaboration.

1 data table match query

Table 1

No description provided.

A Determination of sin2-theta from the forward - backward asymmetry in p anti-p ---> Z0 X ---> e+ e- X interactions at s(1/2) = 1.8-TeV

The CDF collaboration Abe, F. ; Amidei, Dante E. ; Apollinari, G. ; et al.

Phys.Rev.Lett. 67 (1991) 1502-1506, 1991.

Inspire Record 317764 DOI 10.17182/hepdata.19899

An analysis of the forward-backward asymmetry in Z0 decays using data from the Collider Detector at Fermilab at √s =1.8 TeV yields AFB=[5.2±5.9(stat)±0.4(syst)]% and sin2θ¯W =0.228−0.015+0.017(stat)±0.002(syst).

1 data table match query

Table 1

Asymmetry after background and QCD corrections.

Measurement of hadron and lepton pair production from e+ e- annihilation at center-of-mass energies of 130-GeV and 136-GeV

The ALEPH collaboration Buskulic, D. ; De Bonis, I. ; Decamp, D. ; et al.

Phys.Lett.B 378 (1996) 373-384, 1996.

Inspire Record 421552 DOI 10.17182/hepdata.47801

Hadronic and leptonic cross-sections and forward-backward asymmetries are measured using 5.7 pb −1 of data taken with the ALEPH detector at LEP at centre-of-mass energies of 130 and 136 GeV. The results agree with Standard Model expectations. The measurement of hadronic cross-sections far away from the Z resonance improves the determination of the interference between photon and Z exchange. Constraints on models with extra Z bosons are presented.

5 data tables match query

Table 8

Forward-Backward Asymmetry with loose SPRIME cuts.

Table 9

Forward-Backward Asymmetry with tight SPRIME cuts.

Table 10

Forward-Backward Asymmetry with loose SPRIME cuts.

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MEASUREMENT OF POLARIZATION IN THE pi- p ---> pi0, n, pi0 ---> 2 gamma REACTION AT 40-GeV/c WITH THE REGISTRATION OF ALL REACTION PRODUCTS

AZIMUTHAL CORRELATIONS BETWEEN SECONDARY CHARGED HADRONS IN K- p INTERACTIONS AT 32-GeV

MEASUREMENT OF ASYMMETRY IN THE REACTION pi- polarized p ---> K0 LAMBDA AT 40-GeV/c

OBSERVATION OF THE ASYMMETRY IN THE REACTION pi- polarized p ---> omega n AT 40-GeV/c

Final Results on $\mu$ and Tau Pair Production by the Jade Collaboration at {PETRA}

CROSS-SECTION ASYMMETRY OF THE gamma n ---> pi- p REACTION BY POLARIZED PHOTONS IN THE THIRD AND FOURTH RESONANCE REGIONS

First Measurement of the T-odd Correlation between the Z0 Spin and the Three-jet Plane Orientation in Polarized Z0 Decays to Three Jets

Polarized Bhabha Scattering and a Precision Measurement of the Electron Neutral Current Couplings

A Determination of sin2-theta from the forward - backward asymmetry in p anti-p ---> Z0 X ---> e+ e- X interactions at s(1/2) = 1.8-TeV

Measurement of hadron and lepton pair production from e+ e- annihilation at center-of-mass energies of 130-GeV and 136-GeV