229 citations · 2k across the 69 of their papers we have counts for
70 papers
Alpha Background in Multi-Grid Neutron Detectors
A. Backis, C. -C. Lai, J. R. M. Annand +4
Alpha emission from actinide impurities in Al is a source of background counting rate in Multi-Grid type detectors of thermal neutrons. The alpha emission rates from samples of rad…
New high-statistics measurement of the Dalitz decay at the Mainz Microtron
S. Prakhov, L. Heijkenskjöld, S. Abt +69
The Dalitz decay has been measured with the highest statistical accuracy obtained so far in the reaction with the A2 tagged-photon facility at the M…
First measurement using elliptically polarized photons of the double-polarization observable for and
A2 Collaboration, F. Afzal, K. Spieker +74
We report the measurement of the helicity asymmetry for the and final states using, for the first time, an elliptically polarized photon beam in combination with…
Evaluation of the E2/M1 ratio in the transition from the reaction
E. Mornacchi, P. Pedroni, F. Afzal +59
A new data set for the helicity-dependent differential cross section of the single-meson photoproduction reaction was obtained for the photon energy interval 150-4…
Helicity dependent cross sections for the photoproduction of pairs from quasi-free nucleons
A2 Collaboration, D. Ghosal, V. Sokhoyan +71
Photoproduction of -pairs from quasifree nucleons bound in the deuteron has been investigated to study the helicity dependence of this reaction. Measurements with a liq…
Neutron polarisation transfer, , in photoproduction off the proton
M. Bashkanov, D. P. Watts, S. J. D. Kay +63
We report a first measurement of the double-polarisation observable, , in photoproduction off the proton. The double-polarisation observable represents the t…
Target and beam-target asymmetries for the reaction
S. Garni, V. L. Kashevarov, A. Fix +81
Background: Photoproduction of pion pairs allows to study sequential decays of nucleon resonances via excited intermediate states. Such decays are important e.g. for states which i…
First measurement of polarisation transfer in deuteron photodisintegration
M. Bashkanov, D. P. Watts, S. J. D. Kay +66
A first measurement of the polarisation transfer from a circularly-polarised photon to the final state neutron () in deuterium photodisintegration has been carried out. T…
Measurement of the helicity dependence for single photoproduction from the deuteron
The A2 collaboration, F. Cividini, M. Dieterle +72
The helicity-dependent single photoproduction cross section on the deuteron and the angular dependence of the double polarisation observable for the quasi-free single $…
Deeply virtual Compton scattering cross section at high Bjorken
F. Georges, M. N. H. Rashad, A. Stefanko +159
We report high-precision measurements of the Deeply Virtual Compton Scattering (DVCS) cross section at high values of the Bjorken variable . DVCS is sensitive to the Generaliz…
Measurement of Compton scattering at MAMI for the extraction of the electric and magnetic polarizabilities of the proton
A2 Collaboration, E. Mornacchi, P. P. Martel +65
A precise measurement of the differential cross-sections and the linearly polarized photon beam asymmetry for Compton scattering on the proton below pion threshold ha…
Deeply virtual Compton scattering using a positron beam in Hall-C at Jefferson Lab
A. Afanasev, I. Albayrak, S. Ali +71
We propose to use the High Momentum Spectrometer of Hall C combined with the Neutral Particle Spectrometer (NPS) to perform high precision measurements of the Deeply Virtual Compto…
Single Production Off Neutrons Bound in Deuteron with Linearly Polarized Photons
C. Mullen, S. Gardner, D. I. Glazier +79
The quasifree photon beam asymmetry, , has been measured at photon energies, , from 390 to 610 MeV, corresponding to center of mass energy fr…
Form Factors and Two-Photon Exchange in High-Energy Elastic Electron-Proton Scattering
M. E. Christy, T. Gautam, L. Ou +167
We present new precision measurements of the elastic electron-proton scattering cross section for momentum transfer (Q) up to 15.75~\gevsq. Combined with existing data, these p…
Deep exclusive electroproduction of at high in the quark valence regime
The Jefferson Lab Hall A Collaboration, M. Dlamini, B. Karki +159
We report measurements of the exclusive neutral pion electroproduction cross section off protons at large values of (0.36, 0.48 and 0.60) and (3.1 to 8.4 GeV) obtai…
Simulation of the Response of the Solid State Neutron Detector for the European Spallation Source
L. Boyd, E. Rofors, J. R. M. Annand +10
The characteristics of the Solid-state Neutron Detector, under development for neutron-scattering measurements at the European Spallation Source, have been simulated with a Geant4-…
Response of a Li-glass/multi-anode photomultiplier detector to collimated thermal-neutron beams
E. Rofors, N. Mauritzson, H. Perrey +22
The response of a position-sensitive Li-glass scintillator detector being developed for thermal-neutron detection with 6 mm position resolution has been investigated using collimat…
Helicity-dependent cross sections for the photoproduction of pairs from nucleons
M. Dieterle, L. Witthauer, A. Fix +88
The double-polarization observable and helicity-dependent cross sections , have been measured for the photoproduction of pairs off quasi-free protons a…
Response of a Li-glass/multi-anode photomultiplier detector to focused proton and deuteron beams
E. Rofors, J. Pallon, R. Al Jebali +26
The response of a position-sensitive Li-glass based scintillation detector to focused beams of 2.5 MeV protons and deuterons has been investigated. The beams were scanned across th…
Signatures of the hexaquark in d(,)
M. Bashkanov, D. P. Watts, S. J. D. Kay +74
We report a measurement of the spin polarisation of the recoiling neutron in deuterium photodisintegration, utilising a new large acceptance polarimeter within the Crystal Ball at…
Spin polarizabilities of the proton by measurement of Compton double-polarization observables
D. Paudyal, P. P. Martel, G. M. Huber +90
The Compton double-polarization observable has been measured for the first time in the resonance region using a circularly polarized photon beam incident on a lo…
Cross Section for measured at Mainz/A2
W. J. Briscoe, M. Hadzimehmedovi, A. E. Kudryavtsev +89
The differential cross section evaluated for 27 energy bins span the photon-energy range 290-813 MeV (W = 1.195-1.553 GeV) and the pion c.m. polar production angles,…
Measurement of the beam-helicity asymmetry in photoproduction of pairs on carbon, aluminum, and lead
V. Sokhoyan, S. Prakhov, A. Fix +88
The beam-helicity asymmetry was measured, for the first time, in photoproduction of pairs on carbon, aluminum, and lead, with the A2 experimental setup at MAMI. The result…
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…