Bhabha scattering, ee → ee, is a crucial process in the phenomenology of particle physics. Its relevance is mainly due to the fact that it is the process employed to determine the luminosity L at ee colliders: in fact, L = NBhabha/σth, where NBhabha is the rate of Bhabha events and σth is the Bhabha scattering cross section calculated from theory. Two kinematic regions are of special interest f...

The theoretical accuracy of the program TOPAZ0 in the large-angle Bhabha channel is estimated. The physical error associated with the full Bhabha cross section and its forward and backward components separately is given for some event selections and several energy points of interest for LEP1 physics, both for the s and non-s contributions to the cross section. E-mail: [email protected] nicros...

We review the status of Monte Carlo generators presently used for simulations of the large–angle Bhabha process at electron–positron colliders of moderately high energy (flavour factories), operating at centre–of–mass energies between about 1 GeV and 10 GeV. It is shown how the theoretical accuracy reached by present Bhabha programs for physics at flavour factories is at the level of 0.1% and, ...

The study of Bhabha scattering at ee colliders probes the running of the electromagnetic coupling. After early measurements by the VENUS collaboration at TRISTAN and the by L3 collaboration at LEP, two recent analyses have been performed by the OPAL and L3 collaborations. The OPAL collaboration studied highstatistics low-angle Bhabha scattering at LEP, achieving a precise determination of the r...

1Professor, Department of Conservative Dentistry & Endodontics, M R Ambedkar Dental College and Hospital, Bangalore, Karnataka, India; 2Professor, Department of Conservative Dentistry and Endodonics, Bhabha College of Dental Sciences, Bhopal, Madhya Pradesh, India; 3Professor, Department of Conservative Dentistry and Endodonics, R K D F Dental College, Bhopal, Madhya Pradesh, India; 4Reader, De...

A method to determine the running of α from a measurement of small-angle Bhabha scattering is proposed and worked out. The method is suited to high statistics experiments at e + e − colliders, which are equipped with luminometers in the appropriate angular region. A new simulation code predicting small-angle Bhabha scattering is also presented.

Procedures for correcting the beam-beam effects in luminosity measurement at CLIC at 3 TeV CM energy are described and tested using Monte Carlo simulations: • Correction of the angular counting loss due to the combined Beamstrahlung and initial-state radiation (ISR) effects, based on the reconstructed velocity of the collision frame of the Bhabha scattering. • Deconvolution of the luminosity sp...

1 European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex 9, France 2 Juelich Centre for Neutron Science, IFF, Forschungszentrum Juelich, Outstation at FRM II, Lichtenbergstrasse 1, D-85747 Garching, Germany 3 Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India 4 Institut fuer Festkoerperforschung, Forschungszentrum Juelich, D-52425 Juelic...

In this chapter we use the epistemology of the third space developed by Bhabha (1994) and extended by Frenkel (2008) along with Bhabha’s idea of mimicry (1994) to examine the past relationship of dominant commercial productions and native nonprofit theatres. Although both Bhabha and Frenkel were discussing knowledge transfer, we use their conceptualizations to characterize and explore more deep...

The cross section for Bhabha scattering (e + e − → e + e −) with polarized electrons at the center of mass energy of the Z 0 resonance has been measured with the SLD experiment at the SLAC Linear Collider (SLC) during the 1992 and 1993 runs. The first measurement of the left-right asymmetry in Bhabha scattering (A e + e − LR (|cosθ|)) is presented. From A e + e − LR (|cosθ|) the effective weak ...