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View article: Parity violation in Møller scattering within low-energy effective field theory
Parity violation in Møller scattering within low-energy effective field theory Open
View article: Parity violation in Møller scattering within low-energy effective field theory
Parity violation in Møller scattering within low-energy effective field theory Open
We include electroweak effects in Moller scattering at low energies in an effective field theory approach and compute the left-right parity-violating asymmetry. The calculation using low-energy effective field theory provides a solid frame…
View article: Radiative corrections and Monte Carlo tools for low-energy hadronic cross sections in $e^+ e^-$ collisions
Radiative corrections and Monte Carlo tools for low-energy hadronic cross sections in $e^+ e^-$ collisions Open
We present the results of Phase I of an ongoing review of Monte Carlo tools relevant for low-energy hadronic cross sections. This includes a detailed comparison of Monte Carlo codes for electron–positron scattering into a muon pair, pion p…
View article: Radiative corrections and Monte Carlo tools for low-energy hadronic cross sections in $e^+ e^-$ collisions
Radiative corrections and Monte Carlo tools for low-energy hadronic cross sections in $e^+ e^-$ collisions Open
We present the results of Phase I of an ongoing review of Monte Carlo tools relevant for low-energy hadronic cross sections. This includes a detailed comparison of Monte Carlo codes for electron–positron scattering into a muon pair, pion p…
View article: Radiative corrections: from medium to high energy experiments
Radiative corrections: from medium to high energy experiments Open
Radiative corrections are crucial for modern high-precision physics experiments, and are an area of active research in the experimental and theoretical community. Here we provide an overview of the state of the field of radiative correctio…
View article: Radiative corrections: from medium to high energy experiments
Radiative corrections: from medium to high energy experiments Open
Radiative corrections are crucial for modern high-precision physics experiments, and are an area of active research in the experimental and theoretical community. Here we provide an overview of the state of the field of radiative correctio…
View article: Impact of NNLO QED corrections on lepton-proton scattering at MUSE
Impact of NNLO QED corrections on lepton-proton scattering at MUSE Open
View article: Impact of NNLO QED corrections on lepton-proton scattering at MUSE
Impact of NNLO QED corrections on lepton-proton scattering at MUSE Open
View article: High-precision muon decay predictions for ALP searches
High-precision muon decay predictions for ALP searches Open
We present an improved theoretical prediction of the positron energy spectrum for the polarised Michel decay \mu^+\to e^+ \nu_e\bar{\nu}_\mu . In addition to the full next-to-next-to-leading order correction of order \alph…
View article: Muon-electron scattering at NNLO
Muon-electron scattering at NNLO Open
View article: Report on scipost_202211_00021v1
Report on scipost_202211_00021v1 Open
We present an improved theoretical prediction of the positron energy spectrum for the polarised Michel decay µ + → e + ν e νµ .In addition to the full next-to-next-to-leading order correction of order α 2 in the electromagnetic coupling, w…
View article: Report on scipost_202211_00021v1
Report on scipost_202211_00021v1 Open
We present an improved theoretical prediction of the positron energy spectrum for the polarised Michel decay µ + → e + ν e νµ .In addition to the full next-to-next-to-leading order correction of order α 2 in the electromagnetic coupling, w…
View article: McMule dataset
McMule dataset Open
McMule is a generic framework for higher-order QED calculations of scattering and decay processes involving leptons. In this dataset we include all data used in McMule publications as well as the analysis code used. An up-to-date version c…
View article: McMule dataset
McMule dataset Open
McMule is a generic framework for higher-order QED calculations of scattering and decay processes involving leptons. In this dataset we include all data used in McMule publications as well as the analysis code used. An up-to-date version c…
View article: McMule dataset
McMule dataset Open
McMule is a generic framework for higher-order QED calculations of scattering and decay processes involving leptons. In this dataset we include all data used in McMule publications as well as the analysis code used. An up-to-date version c…
View article: McMule dataset
McMule dataset Open
McMule is a generic framework for higher-order QED calculations of scattering and decay processes involving leptons. In this dataset we include all data used in McMule publications as well as the analysis code used. An up-to-date version c…
View article: McMule dataset
McMule dataset Open
McMule is a generic framework for higher-order QED calculations of scattering and decay processes involving leptons. In this dataset we include all data used in McMule publications as well as the analysis code used. An up-to-date version c…
View article: McMule dataset
McMule dataset Open
McMule is a generic framework for higher-order QED calculations of scattering and decay processes involving leptons. In this dataset we include all data used in McMule publications as well as the analysis code used. An up-to-date version c…
View article: Universal structure of radiative QED amplitudes at one loop
Universal structure of radiative QED amplitudes at one loop Open
A bstract We present two novel results about the universal structure of radiative QED amplitudes in the soft and in the collinear limit. On the one hand, we extend the well-known Low-Burnett-Kroll theorem to the one-loop level and give the…
View article: Møller scattering at NNLO
Møller scattering at NNLO Open
We present a calculation of the full set of next-to-next-to-leading-order QED corrections to unpolarised Møller scattering. This encompasses photonic, leptonic, and non-perturbative hadronic corrections and includes electron mass effects a…
View article: Science Case for the new High-Intensity Muon Beams HIMB at PSI
Science Case for the new High-Intensity Muon Beams HIMB at PSI Open
In April 2021, scientists active in muon physics met to discuss and work out the physics case for the new High-Intensity Muon Beams (HIMB) project at PSI that could deliver of order $10^{10}$\,s$^{-1}$ surface muons to experiments. Ideas a…
View article: Muonium-antimuonium conversion
Muonium-antimuonium conversion Open
The MACS experiment performed at PSI in the 1990s provided an yet unchallenged upper bound on the probability for a spontaneous conversion of the muonium atom, M=(μ+e−) , into its antiatom, antimuonium ¯¯¯¯¯M=(μ−e+). It comprises the culmi…
View article: Particle Physics at PSI
Particle Physics at PSI Open
Particle physics results of constant value and significant impact have been obtained at PSI, and several efforts are presently ongoing and expected to deliver new findings in the near future. In this special SciPost volume we collect them …
View article: McMule dataset
McMule dataset Open
McMule is a generic framework for higher-order QED calculations of scattering and decay processes involving leptons. In this dataset we include all data used in McMule publications as well as the analysis code used. An up-to-date version c…
View article: McMule dataset
McMule dataset Open
McMule is a generic framework for higher-order QED calculations of scattering and decay processes involving leptons. In this dataset we include all data used in McMule publications as well as the analysis code used. An up-to-date version c…
View article: Bhabha scattering at NNLO with next-to-soft stabilisation
Bhabha scattering at NNLO with next-to-soft stabilisation Open
View article: Report on scipost_202107_00017v1
Report on scipost_202107_00017v1 Open
The High Intensity Proton Accelerator Facility at PSI routinely produces a proton beam with up to 1.4 MW power at a kinetic energy of 590 MeV.The beam is used to generate neutrons in a spallation target, and muons, pions and neutrinos in m…
View article: Report on scipost_202105_00021v1
Report on scipost_202105_00021v1 Open
This article gives a compact introduction and overview of the theory underlying the experiments described in the rest of this review.
View article: Report on scipost_202106_00032v1
Report on scipost_202106_00032v1 Open
The decay of the muon has been studied at PSI with several precision measurements: The longitudinal polarization P L (E) with the muon decay parameters ξ , ξ , the Time-Reversal Invariance (TRI) conserving transverse polarization P T 1 (E)…
View article: Report on scipost_202106_00044v1
Report on scipost_202106_00044v1 Open
A high-intensity, low-emittance atomic muonium (M = µ + + e -) beam is being developed, which would enable improving the precision of M spectroscopy measurements, and may allow a direct observation of the M gravitational interaction.Measur…