activity
20142025
most citedSearch for light massive gauge bosons as an explanation of the anomaly at MAMI

224 citations · 318 across the 18 of their papers we have counts for

collaborators

18 papers

nucl-ex2025

Measurement of the helicity-dependent response in quasi-elastic proton knockout from

Tim Kolar, Iris Sabo-Napadensky, Patrick Achenbach +34

The role of the electron-helicity-dependent cross-section term and the structure function in the quasi-elastic process was studied. The…

nucl-ex2024

Measurement of the cross sections at

M. Mihovilovič, L. Doria, P. Achenbach +22

We present the findings of a study based on a new inelastic electron-scattering experiment on the nucleus focusing on the kinematic region of $Q^2=0.8\,\mathrm{…

nucl-ex2024

Electroproduction of the Lambda/Sigma^0 hyperons at Q^2~0.5 (GeV/c)^2 at forward angles

K. Okuyama, K. Itabashi, S. Nagao +83

In 2018, the E12-17-003 experiment was conducted at the Thomas Jefferson National Accelerator Facility (JLab) to explore the possible existence of an nnLambda state in the reconstr…

nucl-ex2023

Nuclear density dependence of polarization transfer in quasi-elastic reactions

T. Kolar, W. Cosyn, C. Giusti +52

The ratio of the transverse and longitudinal component of polarization transfer to protons in the quasi-elastic reaction, $P^{\prime}_x/P^{\prime}…

nucl-ex2023★ 3 cited

Measurement of the Generalized Polarizabilities of the Proton in Virtual Compton Scattering

H. Atac, A. Camsonne, M. K. Jones +37

We propose to conduct a measurement of the Virtual Compton Scattering reaction in Hall C that will allow the precise extraction of the two scalar Generalized Polarizabilities (GPs)…

nucl-ex2021★ 12 cited

The cross-section measurement for the reaction

K. N. Suzuki, T. Gogami, B. Pandey +80

The small binding energy of the hypertrition leads to predictions of non-existence of bound hypernuclei for isotriplet three-body systems such as . However, invariant mass spe…

physics.ins-det2021★ 27 cited

Operation and characterization of a windowless gas jet target in high-intensity electron beams

B. S. Schlimme, S. Aulenbacher, P. Brand +54

A cryogenic supersonic gas jet target was developed for the MAGIX experiment at the high-intensity electron accelerator MESA. It will be operated as an internal, windowless target…

physics.ins-det2021

Electron beam studies of light collection in a scintillating counter with embedded fibers

M. Lauß, P. Achenbach, S. Aulenbacher +28

The light collection of several fiber configurations embedded in a box-shaped plastic scintillating counter was studied by scanning with minimum ionizing electrons. The light was r…

nucl-ex2020

Precision measurements of A=3 nuclei in Hall B

Or Hen, Dave Meekins, Dien Nguyen +55

We propose a high-statistics measurement of few body nuclear structure and short range correlations in quasi-elastic scattering at 6.6 GeV from H, He and H targets in H…

nucl-ex2020★ 4 cited

Measurements of the induced polarization in the quasi-elastic process in non-coplanar kinematics

Sebouh J. Paul, Tim Kolar, Tilen Brecelj +44

We report measurements of the induced polarization of protons knocked out from H and C via the reaction. We have studied the dependence of $\v…

nucl-ex2020★ 7 cited

Measurement of the Generalized Polarizabilities of the Proton at Intermediate

H. Fonvieille, J. Beričič, L. Correa +35

Background: Generalized polarizabilities (GPs) are important observables to describe the nucleon structure, and measurements of these observables are still scarce. Purpose: This pa…

nucl-ex2020★ 8 cited

Comparison of recoil polarization in the process for protons extracted from and shell

T. Kolar, S. Paul, T. Brecelj +29

We present first measurements of the double ratio of the polarization transfer components f…

nucl-ex2019★ 13 cited

New Insight in the -Dependence of Proton Generalized Polarizabilities

J. Beričič, L. Correa, M. Benali +35

Virtual Compton scattering on the proton has been investigated at three yet unexplored values of the four-momentum transfer : 0.10, 0.20 and 0.45 GeV, at the Mainz Microtr…

nucl-ex2019★ 2 cited

Physics with Positron Beams at Jefferson Lab 12 GeV

A. Afanasev, I. Albayrak, S. Ali +124

Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental program at the next generation of lepton accelerators. In the context o…

nucl-ex2019★ 2 cited

The proton charge radius extracted from the Initial State Radiation experiment at MAMI

Miha Mihovilovič, Patrick Achenbach, Tobias Beranek +32

We report on a comprehensive reinterpretation of the existing cross-section data for elastic electron-proton scattering obtained by the initial-state radiation technique, resulting…

nucl-ex2019★ 8 cited

Quasi-elastic polarization-transfer measurements on the deuteron in anti-parallel kinematics

Sebouh J. Paul, David Izraeli, Tilen Brecelj +41

We present measurements of the polarization-transfer components in the H reaction, covering a previously unexplored kinematic region with large positive (ant…

nucl-ex2018★ 8 cited

Measurement of double-polarization asymmetries in the quasi-elastic process

M. Mihovilovič, G. Jin, E. Long +99

We report on a precise measurement of double-polarization asymmetries in electron-induced breakup of proceeding to and final states, pe…

hep-ex2014★ 224 cited

Search for light massive gauge bosons as an explanation of the anomaly at MAMI

H. Merkel, P. Achenbach, C. Ayerbe Gayoso +33

A massive, but light abelian U(1) gauge boson is a well motivated possible signature of physics beyond the Standard Model of particle physics. In this paper, the search for the sig…