A precise determination of the τ-mass

Bartel, W.; Dittmann, P.; Duinker, P.; Olsson, J. E.; O’Neill, L. H.; Pandoulas, D.; Steffen, P.; Fritscher, U.; Heintze, J.; Heinzelmann, G.; Heuer, R. D.; Rieseberg, H.; Wagner, A.

doi:10.1016/0370-2693(78)90718-9

Cited by 32 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The centre-of-mass energies available to the experiments in the laboratory system were increased by 2 orders of magnitude. , DASP [110,111], LENA [112], DH(HM) [113,114] CESR [115] Cornell, Ithaka 10 − 11 CLEO [116,117], CUSB [118,119] PETRA [120] DESY Hamburg 12 − 47 CELLO [121], JADE [122], MARK J [123], PLUTO [109], TASSO [110,124] TRISTAN [125] KEK Tsukuba 50 − 64 TOPAZ [126], VENUS [127], AMY [128] SLC [129] SLAC Stanford ≈ 91 MARK II [102], SLD [130] LEP [131] CERN Geneva 88 − 209 ALEPH [132,133], DELPHI [134,135], L3 [136], OPAL [137] The integrated luminosities of the corresponding data samples range from O(1 − 100)/nb of the early experiments to O(10 − 100)/pb at PETRA, PEP and TRISTAN. The experiments at the only recently decommissioned colliders SLC and LEP collected data samples corresponding to several hundred 1/pb on the Z 0 peak and, in the case of LEP, above the Z 0 peak up to cms energies of 209 GeV.…”

Section: Accelerators and Experimentsmentioning

confidence: 99%

Tests of quantum chromo dynamics at e⁺e⁻ colliders

Kluth¹

2006

Rep. Prog. Phys.

107

View full text Add to dashboard Cite

Abstract.The current status of tests of the theory of strong interactions, Quantum Chromo Dynamics (QCD), with data from hadron production in e + e − annihilation experiments is reviewed. The LEP experiments ALEPH, DELPHI, L3 and OPAL have published many analyses with data recorded on the Z 0 resonance at √ s = 91.2 GeV and above up to √ s > 200 GeV. There are also results from SLD at √ s = 91.2 GeV and from reanalysis of data recorded by the JADE experiment at 14 ≤ √ s ≤ 44 GeV. The results of studies of jet and event shape observables, of particle production and of quark gluon jet differences are compared with predictions by perturbative QCD calculations. Determinations of the strong coupling constant α S (m Z 0 ) from jet and event shape observables, scaling violation and fragmentation functions, inclusive observables from Z 0 decays, hadronic τ decays and hadron production in low energy e + e − annihilation are discussed. Updates of the measurements are performed where new data or improved calculations have become available. The best value of α S (m Z 0 ) is obtained from an average of measurements using inclusive observables calculated in NNLO QCD: α S (m Z 0 ) = 0.1211 ± 0.0021 where the error is dominated by theoretical systematic uncertainties. The other measurements of α S (m Z 0 ) are in good agreement with this value. Finally, investigations of the gauge structure of QCD are summarised and the best values for the colour factors are determined: C A = 2.89 ± 0.21 C F = 1.30 ± 0.09 with errors dominated by systematic uncertainties and in good agreement with the expectation from QCD with the SU(3) gauge symmetry.

show abstract

Section: Accelerators and Experimentsmentioning

confidence: 99%

Tests of quantum chromo dynamics at e⁺e⁻ colliders

Kluth¹

2006

Rep. Prog. Phys.

107

View full text Add to dashboard Cite

show abstract

“…• Electron Events 100 o Muon Events Figure 10 The threshold behavior of the cross section for e-hadron and Il-hadron events measured by the DESY-Heidelberg group (Bartel et al 1978). The theoretical curve is for a point-like, spin-1/2 particle.…”

mentioning

confidence: 99%

The Tau Lepton

Перл¹

1980

Annu. Rev. Nucl. Part. Sci.

View full text Add to dashboard Cite

show abstract

“…In the first experimental paper of τ lepton [1], m τ is estimated to have a mass in the range from 1.6 to 2.0 GeV. Since then many experiments have been performed to measure m τ [2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17], the results are displayed in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Discussion on upper limit of the precision for τ mass measurement

2016

Mod. Phys. Lett. A

View full text Add to dashboard Cite

τ lepton is one of three chareged leptons in nature, the measurements of its mass have been performed since its discovery. The present relative accuracy is already at the level of 10 −4 ; more factors are still being studied in order to increase the accuracy. However, the available techniques for analysis and expectable luminosity from e + e − collider indicate that the precision upper limit of τ mass is almost reached, which means that brand new approaches should be looked for if the great improvement is yearned for.

show abstract

A precise determination of the τ-mass

Cited by 32 publications

References 2 publications

Tests of quantum chromo dynamics at e⁺e⁻ colliders

Tests of quantum chromo dynamics at e⁺e⁻ colliders

The Tau Lepton

Discussion on upper limit of the precision for τ mass measurement

Contact Info

Product

Resources

About

A precise determination of the τ-mass

Cited by 32 publications

References 2 publications

Tests of quantum chromo dynamics at e+e− colliders

Tests of quantum chromo dynamics at e+e− colliders

The Tau Lepton

Discussion on upper limit of the precision for τ mass measurement

Contact Info

Product

Resources

About

Tests of quantum chromo dynamics at e⁺e⁻ colliders

Tests of quantum chromo dynamics at e⁺e⁻ colliders