Radiative corrections to Bhabha scattering at high energies

Berends, F.A.; Kleiss, R.; Hollik, W.

doi:10.1016/0550-3213(88)90651-7

Cited by 232 publications

(83 citation statements)

References 15 publications

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“…QED leading-log (LL) and sub-leading (SL) uncertainties (1 and 2) and the Z-exchange Table 2: Summary of theoretical systematic errors from [9] for the two luminosity reference cross is large. The estimated uncertainty due to these events is 0.8-10'°, giving a total uncertainty in the class is well simulated in the Monte Carlo, the uncertainty in the fraction of events of the first class low charged multiplicity events and events with strong initial state bremsstrahlung.…”

Section: Luminosity Theoretical Errormentioning

confidence: 99%

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Z production cross sections and lepton pair forward-backward asymmetries

Buskulic¹,

Casper²,

Debonis³

et al. 1994

Z. Phys. C - Particles and Fields

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Section: Luminosity Theoretical Errormentioning

confidence: 99%

“…SiCAL Bhabha cross section [9]: the theoretical systematic error for LCAL is estimated to be 0.28% (as to the former's acceptance at lower angles. This reflects in a smaller theoretical uncertainty for the generator The electroweak correction is four times smaller for SiCAL with respect to LCAL due with exclusive exponentiation.…”

Section: Sical Luminositymentioning

confidence: 99%

Z production cross sections and lepton pair forward-backward asymmetries

Buskulic¹,

Casper²,

Debonis³

et al. 1994

Z. Phys. C - Particles and Fields

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“…Non-τ background sources such as Bhabha, µ-pair and two-photon events have been generated using the babamc [33,34], koralz [35] and vermaseren [36,37] generators, respectively. The response of the detector to generated particles is modeled using a simulation program [38] based on the geant [39] package.…”

Section: Monte Carlo Simulated Samplesmentioning

confidence: 99%

Measurement of the Michel parameters in leptonic tau decays

al.

1999

Eur. Phys. J. C

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The Michel parameters of the leptonic τ decays are measured using the OPAL detector at LEP. The parameters ρ ℓ , ξ ℓ , (ξδ) ℓ (with ℓ = e, µ) and η µ are extracted from the energy spectra of the charged decay leptons and from their energy-energy correlations. A new method involving a global likelihood fit of Monte Carlo generated events with complete detector simulation and background treatment has been applied to the data recorded at center-of-mass energies close to √ s = m Z 0 corresponding to an integrated luminosity of 155 pb −1 . If e-µ universality is assumed and inferring the τ polarization from neutral current data, the measured Michel parameters are: ρ = 0.781 ± 0.028 ± 0.018, ξ = 0.98 ± 0.22 ± 0.10, η = 0.027 ± 0.055 ± 0.005, ξδ = 0.65 ± 0.14 ± 0.07, where the value of η has been constrained using the published OPAL measurements of the leptonic branching ratios and the τ lifetime. Limits on non-standard coupling constants and on the masses of new gauge bosons are obtained. The results are in agreement with the V−A prediction of the Standard Model.

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“…The e analysis looked for events with a high energy electron in one hemisphere and a high momentum muon in the other hemisphere. E ciencies and backgrounds were determined partly from data, and partly from Bhabha [16], dimuon [17], and -pair [18] simulated event samples with detector response functions simulated [19] and adjusted to t real data. For the generation of signals, modi ed versions of KORALZ [18] were used.…”

Section: The Detectormentioning

confidence: 99%