Hard photon corrections for Bhabha scattering
نویسندگان
چکیده
منابع مشابه
NLO QED Corrections to Hard-Bremsstrahlung Emission in Bhabha Scattering
In this paper we present a numerical implementation of the one-loop QED corrections to the hard-bremsstrahlung process e−e+ → e−e+γ. These corrections can be included in the Monte Carlo event generators employed for simulating Bhabha scattering events at low-energy high-luminosity electron-positron colliders. The calculation is performed by employing the reduction method developed by Ossola, Pa...
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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...
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The two-loop radiative photonic corrections to Bhabha scattering are computed in the leading order of the small electron mass expansion up to the nonlogarithmic term. After including the soft photon bremsstrahlung, we obtain the infrared-finite result for the differential cross section, which can directly be applied to a precise luminosity determination of the present and future e+ e- colliders.
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A new Monte Carlo model is proposed for radiative corrections to Bhabha scattering by extending QEDPS developed for multi-photon emission in muon pair production in ee annihilation. This is the QED version of the model known as parton shower in QCD. The main difference between muon pair production and Bhabha scattering is that the latter cross section shows the singularity of 1/t. A shower algo...
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We describe the details of the evaluation of the two-loop radiative photonic corrections to Bhabha scattering. The role of the corrections in the high-precision luminosity determination at present and future electron-positron colliders is discussed. PACS numbers: 11.15.Bt, 12.20.Ds
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1974
ISSN: 0550-3213
DOI: 10.1016/0550-3213(74)90329-0