MERADGEN 1.0: Monte Carlo generator for the simulation of radiative events in parity conserving doubly-polarized Møller scattering

Afanasev, A.; Chudakov, E.; Ilyichev, A.; Zykunov, V.

doi:10.1016/j.cpc.2006.10.002

Cited by 19 publications

(12 citation statements)

References 8 publications

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“…(23). For the sake of convenience, we define by the term "weak" correction (we will use the superscript "weak") those corrections that are associated with one of the following classes: boson self-energy (including γγ self-energy because this is convenient for the sake of uniformity and because this is justified by the fact that γγ self-energies include W -boson loops), BSE; vertex contributions corresponding to Λ 2,3 (we mark them by the superscript HV-that is, heavy vertices); ZZ boxes; and W W boxes.…”

Section: Hard Photonsmentioning

confidence: 97%

“…Yet another calculation was performed in [22], where attention was given primarily to finding compact expressions that are convenient for numerical estimations and to studying effects associated with the dependence of the results on experimental limits on the inelasticity parameter or on the square of the missing mass. The Monte Carlo generator MERADGEN [23], which is useful for determining the polarization of an electron beam, was constructed on the basis of that calculation.…”

Section: Introductionmentioning

confidence: 99%

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Precise calculations of observables of polarized møller scattering: From JLAB to ILC energies

2012

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One-loop electroweak corrections to observables of the reaction e − e − → e − e − (γ) were calculated over a broad range of energies: from conditions of the MOLLER experiment at the Thomas Jefferson Laboratory (JLab) to those of planned experiments at the International Linear Collider (ILC). The dependence of various contributions to the observable polarization asymmetry on various renormalization conditions was studied within the scheme of on-shell renormalization. The results were obtained by two methods: precisely, by applying the FeynArts, FormCalc, LoopTools, and Form computer codes, and approximately, with the aid of the asymptotic-estimation methods. The resulting compact formulas are absolutely free from nonphysical parameters and are convenient for deducing numerical estimates. It is shown that the total one-loop correction is independent of renormalization conditions and takes an identical value within different computational schemes.

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Section: Hard Photonsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Precise calculations of observables of polarized møller scattering: From JLAB to ILC energies

2012

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“…The explicit expressions of S i are cumbersome and not presented here. The expressions calculated within URA can be found in Appendix of [35] while their exact expressions (beyond URA) can be found in the source code of the Monte-Carlo generator MERADGEN 1.0 [43]. Note that all parts of the cross section describing the process (56) are not separated into t-and u-parts.…”

Section: Radiative Corrections To Møller Scatteringmentioning

confidence: 99%

“…The explicit expressions for δ H 1 and δ S 1 obtained without any approximation are given in Appendix. Within the URA they are reduced to the expressions (B.10) of [43]:…”

Section: Radiative Corrections To Møller Scatteringmentioning

confidence: 99%

Radiative corrections beyond the ultra relativistic limit in unpolarized ep elastic and Møller scatterings for the PRad Experiment at Jefferson Laboratory

Akushevich

Ilyichev³

et al. 2015

Eur. Phys. J. A

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The clear 7σ discrepancy between measurements of the proton charge radius from muonic hydrogen Lamb shifts and those from hydrogen Lamb shift and electron scattering lead to both intense theoretical and experimental efforts to understand and explain this difference. In this regard, a new experiment (PRad) based on unpolarized ep elastic scattering cross section measurements normalized to Møller scattering is underway at Jefferson Laboratory to extract the proton charge radius based on new proton electric form factor down to values of momentum transfer squared Q 2 , as low as 10 −4 (GeV/c) 2 . To reach the precision of the experiment in such a small Q 2 region requires reliable knowledge of radiative corrections. In this paper, we present a complete calculation of radiative corrections for unpolarized elastic ep and Møller scatterings performed within a covariant formalism resulting in the set of explicit formulas beyond the ultra relativistic approximation (m 2 e Q 2 ), and numerical results for the kinematics of the PRad experiment.

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“…Thus, the Monte Carlo generator RADGEN [18] for simulation of radiative events in inclusive deep inelastic scattering has been developed on the basis of the FORTRAN code POLRAD [19]. The Monte Carlo generator MERADGEN [20] for simulation of radiative events in Møller scattering appeared on the base of FORTRAN code MERA [21].…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo generator ELRADGEN 2.0 for simulation of radiative events in elastic ep-scattering of polarized particles

Akushevich¹,

Filoti²,

Ilyichev³

et al. 2012

Computer Physics Communications

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The structure and algorithms of the Monte-Carlo generator ELRADGEN 2.0 designed to simulate radiative events in polarized ep-scattering are presented. The full set of analytical expressions for the QED radiative corrections is presented and discussed in detail. Algorithmic improvements implemented to provide faster simulation of hard real photon events are described. Numerical tests show high quality of generation of photonic variables and radiatively corrected cross section. The comparison of the elastic radiative tail simulated within the kinematical conditions of the BLAST experiment at MIT BATES shows a good agreement with experimental data.

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MERADGEN 1.0: Monte Carlo generator for the simulation of radiative events in parity conserving doubly-polarized Møller scattering

Cited by 19 publications

References 8 publications

Precise calculations of observables of polarized møller scattering: From JLAB to ILC energies

Precise calculations of observables of polarized møller scattering: From JLAB to ILC energies

Radiative corrections beyond the ultra relativistic limit in unpolarized ep elastic and Møller scatterings for the PRad Experiment at Jefferson Laboratory

Monte Carlo generator ELRADGEN 2.0 for simulation of radiative events in elastic ep-scattering of polarized particles

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