Matching perturbative and Parton Shower corrections to Bhabha process at flavour factories
arXiv:hep-ph/0607181 · doi:10.1016/j.nuclphysb.2006.09.022
Abstract
We report on a high-precision calculation of the Bhabha process in Quantum Electrodynamics, of interest for precise luminosity determination of electron-positron colliders involved in R measurements in the region of hadronic resonances. The calculation is based on the matching of exact next-to-leading order corrections with a Parton Shower algorithm. The accuracy of the approach is demonstrated in comparison with existing independent calculations and through a detailed analysis of the main components of theoretical uncertainty, including two-loop corrections, hadronic vacuum polarization and light pair contributions. The calculation is implemented in an improved version of the event generator BABAYAGA with a theoretical accuracy of the order of 0.1%. The generator is now available for high-precision simulations of the Bhabha process at flavour factories.
34 pages, 8 figures, uses elsart.cls. Version to appear on Nuclear Physics B
References in corpus (3)
Cited by in corpus (12)
- Precision electroweak calculation of the production of a high transverse-momentum lepton pair at hadron colliders
- Measurement of sigma(e+ e- -> pi+ pi-) from threshold to 0.85 GeV^2 using Initial State Radiation with the KLOE detector
- Photon pair production at flavour factories with per mille accuracy
- Two-Loop Fermionic Corrections to Massive Bhabha Scattering
- Two-Loop Heavy-Flavor Contribution to Bhabha Scattering
- Virtual Hadronic and Heavy-Fermion O(alpha^2) Corrections to Bhabha Scattering
- Radiative Events as a Probe of Dark Forces at GeV-Scale e+ e- Colliders
- Full One-loop Electro-Weak Corrections to Three-jet Observables at the Z pole and Beyond
- Mini-review on Monte Carlo programs for Bhabha scattering
- Two-Loop QED Heavy-Flavor Contribution to Bhabha Scattering
- Bhabha Scattering at NNLO
- Matching Parton Shower and matrix elements in QED