Affiliations: 5 Population Biology Laboratory, Biology Division, Indian Institute of Science Education and 6 Research-Pune, Dr. Homi Bhabha Road, Pune, India, 411 008 7 8 Evolutionary Biology Laboratory, Evolutionary and Organismal Biology Unit, Jawaharlal 9 Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, India, 560 064 10 Present Address: Clintus Network Ltd., No. 205/1 ...

Javier Herrero-Martín,1 Valerio Scagnoli,1 Claudio Mazzoli,1 Yixi Su,2 Ranjan Mittal,2,3 Yinguo Xiao,4 Thomas Brueckel,2,4 Neeraj Kumar,5 S. K. Dhar,5 A. Thamizhavel,5 and Luigi Paolasini1 1European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex 9, France 2Juelich Centre for Neutron Science, IFF, Forschungszentrum Juelich, Outstation at FRM II, Lichtenbergstrasse 1, D-85747 Garc...

The LEP2 data set on the Bhabha process is analyzed with the aim to detect the signals of the heavy virtual Z ′ gauge bosons. The state interacting with the left-handed standard-model doublets and called the Chiral Z ′ is investigated. This particle was introduced already as the low-energy state allowed by the renormalizability of the model. The contribution of the Chiral Z ′ state to the Bhabh...

The aim of this note is to characterize briefly main components of theoretical error of the small angle Bhabha measurement at LEP and to discuss critically how solid these estimates really are, from todays perspective. We conclude that the existing theoretical error of the LEP luminometer process (small angle Bhabha) is rather solid, and we add some new discussion concerning the remaining uncer...

The method for obtaining functional equations, recently proposed by one of the authors [1], is applied to one-loop box integrals needed in calculations of radiative corrections to heavy-quark production and Bhabha scattering. We present relationships between these integrals with different arguments and box integrals with all propagators being massless. It turns out that functional equations are...

A new Monte Carlo event generator for wide angle Bhabha scattering and muon pair production in e+e− collisions is described. The program includes complete one-loop electroweak corrections, and QED radiative corrections. The O(α) QED correction uses the exact matrix element. Higher order QED corrections are included in an improved soft photon approximation with exponentiation of initial state ra...