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Publications (17)

nucl-ex2023

First measurement of polarisation transfer $C_{x^{'}}^{n}$ 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 ( $C_{x^{'}}^{n}$ ) in deuterium photodisintegration has been carried out. T…

physics.ins-det2016

Long-term stability test of a triple GEM detector

R. P. Adak, S. Biswas, S. Das +11

The main aim of the study is to perform the long-term stability test of gain of the single mask triple GEM detector. A simple method is used for this long- term stability test usin…

nucl-ex2023

Helicity dependent cross sections for the photoproduction of $I ¨ ^{0} I ¨ ^{\pm}$ pairs from quasi-free nucleons

A2 Collaboration, D. Ghosal, V. Sokhoyan +71

Photoproduction of $I ¨ ^{0} I ¨ ^{\pm}$ -pairs from quasifree nucleons bound in the deuteron has been investigated to study the helicity dependence of this reaction. Measurements with a l…

physics.ins-det2017

Technical Design Report for the Paul Scherrer Institute Experiment R-12-01.1: Studying the Proton "Radius" Puzzle with Î¼p Elastic Scattering

R. Gilman, E. J. Downie, G. Ron +56

The difference in proton radii measured with $I^¼ p$ atoms and with $e p$ atoms and scattering remains an unexplained puzzle. The PSI MUSE proposal is to measure $I^¼ p$ and $e p$ scatt…

nucl-ex2019

Cross Section for $I^^{3} n \to I ¨ ^{0} n$ measured at Mainz/A2

W. J. Briscoe, M. Hadzimehmedovi, A. E. Kudryavtsev +89

The $I^^{3} n \to I ¨ ^{0} n$ 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 angle…

nucl-ex2024

First measurement using elliptically polarized photons of the double-polarization observable $E$ for $I^^{3} p \to p I ¨ ^{0}$ and $I^^{3} p \to n I ¨ ^{+}$

A2 Collaboration, F. Afzal, K. Spieker +74

We report the measurement of the helicity asymmetry $E$ for the $p I ¨ ^{0}$ and $n I ¨ ^{+}$ final states using, for the first time, an elliptically polarized photon beam in combination wit…

nucl-ex2022

Measurement of the helicity dependence for single $I ¨ ^{0}$ photoproduction from the deuteron

The A2 collaboration, F. Cividini, M. Dieterle +72

The helicity-dependent single $I ¨ ^{0}$ photoproduction cross section on the deuteron and the angular dependence of the double polarisation observable $E$ for the quasi-free single…

nucl-ex2022

Neutron polarisation transfer, $C_{x^{'}}^{n}$ , in $I ¨ ^{+}$ photoproduction off the proton

M. Bashkanov, D. P. Watts, S. J. D. Kay +63

We report a first measurement of the double-polarisation observable, $C_{x^{'}}$ , in $I ¨ ^{+}$ photoproduction off the proton. The $C_{x^{'}}$ double-polarisation observable represents the…

nucl-ex2021

Single $I ¨ ^{0}$ Production Off Neutrons Bound in Deuteron with Linearly Polarized Photons

C. Mullen, S. Gardner, D. I. Glazier +79

The quasifree $I^^{3} d \to I ¨ ^{0} n (p)$ photon beam asymmetry, $I^£$ , has been measured at photon energies, $E_{I^}^{3}$ , from 390 to 610 MeV, corresponding to center of mass energ…

nucl-ex2026

Measurement of the Gerasimov-Drell-Hearn integrand for proton and deuteron from 200 to 1400 MeV

P. Pedroni, F. Afzal, S. Abt +59

New data for the total inclusive helicity-dependent cross section for the proton and deuteron were obtained in the photon energy interval 200-1400 MeV. The experiment was performed…

nucl-ex2020

Helicity-dependent cross sections for the photoproduction of $I ¨ ^{0}$ pairs from nucleons

M. Dieterle, L. Witthauer, A. Fix +88

The double-polarization observable $E$ and helicity-dependent cross sections $I ¨ _{1/2}$ , $I ¨ _{3/2}$ have been measured for the photoproduction of $I ¨ ^{0}$ pairs off quasi-free proton…

physics.ins-det2021

Characterization of Muon and Electron Beams in the Paul Scherrer Institute PiM1 Channel for the MUSE Experiment

E. Cline, W. Lin, P. Roy +57

The MUon Scattering Experiment, MUSE, at the Paul Scherrer Institute, Switzerland, investigates the proton charge radius puzzle, lepton universality, and two-photon exchange, via s…

physics.ins-det2024

The MUSE Beamline Calorimeter

W. Lin, T. Rostomyan, R. Gilman +40

The MUon Scattering Experiment (MUSE) was motivated by the proton radius puzzle arising from the discrepancy between muonic hydrogen spectroscopy and electron-proton measurements.…

nucl-ex2019

Signatures of the $d^{*} (2380)$ hexaquark in d( $I^^{3}$ , $p n$ )

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…

hep-ex2026

New high-statistics measurement of the $I ¨ ^{0} \to e^{+} e^{-} I^^{3}$ Dalitz decay at the Mainz Microtron

S. Prakhov, L. HeijkenskjÃ¶ld, S. Abt +69

The Dalitz decay $I ¨ ^{0} \to e^{+} e^{-} I^^{3}$ has been measured with the highest statistical accuracy obtained so far in the $I^^{3} p \to I ¨ ^{0} p$ reaction with the A2 tagged-photon facility at t…

nucl-ex2024

Evaluation of the E2/M1 ratio in the $N \to I^ (1232)$ transition from the $I^^{3} p \to p I ¨ ^{0}$ 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 $I^^{3} p \to p I ¨ ^{0}$ was obtained for the photon energy interval 150…

nucl-ex2022

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 $d I ¨ / d I^c ◯$ and the linearly polarized photon beam asymmetry $I^£_{3}$ for Compton scattering on the proton below pion threshold…

Publications (17)

First measurement of polarisation transfer Cx′n​ in deuteron photodisintegration

Long-term stability test of a triple GEM detector

Helicity dependent cross sections for the photoproduction of I¨0I¨± pairs from quasi-free nucleons

Technical Design Report for the Paul Scherrer Institute Experiment R-12-01.1: Studying the Proton "Radius" Puzzle with Î¼p Elastic Scattering

Cross Section for I^3n→I¨0n measured at Mainz/A2

First measurement using elliptically polarized photons of the double-polarization observable E for I^3p→pI¨0 and I^3p→nI¨+

Measurement of the helicity dependence for single I¨0 photoproduction from the deuteron

Neutron polarisation transfer, Cx′n​, in I¨+ photoproduction off the proton

Single I¨0 Production Off Neutrons Bound in Deuteron with Linearly Polarized Photons

Measurement of the Gerasimov-Drell-Hearn integrand for proton and deuteron from 200 to 1400 MeV

Helicity-dependent cross sections for the photoproduction of I¨0 pairs from nucleons

Characterization of Muon and Electron Beams in the Paul Scherrer Institute PiM1 Channel for the MUSE Experiment

The MUSE Beamline Calorimeter

Signatures of the d∗(2380) hexaquark in d(I^3,pn)

New high-statistics measurement of the I¨0→e+e−I^3 Dalitz decay at the Mainz Microtron

Evaluation of the E2/M1 ratio in the N→I^(1232) transition from the I^3p​→pI¨0 reaction

Measurement of Compton scattering at MAMI for the extraction of the electric and magnetic polarizabilities of the proton

First measurement of polarisation transfer $C_{x^{'}}^{n}$ in deuteron photodisintegration

Helicity dependent cross sections for the photoproduction of $I ¨ ^{0} I ¨ ^{\pm}$ pairs from quasi-free nucleons

Cross Section for $I^^{3} n \to I ¨ ^{0} n$ measured at Mainz/A2

First measurement using elliptically polarized photons of the double-polarization observable $E$ for $I^^{3} p \to p I ¨ ^{0}$ and $I^^{3} p \to n I ¨ ^{+}$

Measurement of the helicity dependence for single $I ¨ ^{0}$ photoproduction from the deuteron

Neutron polarisation transfer, $C_{x^{'}}^{n}$ , in $I ¨ ^{+}$ photoproduction off the proton

Single $I ¨ ^{0}$ Production Off Neutrons Bound in Deuteron with Linearly Polarized Photons

Helicity-dependent cross sections for the photoproduction of $I ¨ ^{0}$ pairs from nucleons

Signatures of the $d^{*} (2380)$ hexaquark in d( $I^^{3}$ , $p n$ )

New high-statistics measurement of the $I ¨ ^{0} \to e^{+} e^{-} I^^{3}$ Dalitz decay at the Mainz Microtron

Evaluation of the E2/M1 ratio in the $N \to I^ (1232)$ transition from the $I^^{3} p \to p I ¨ ^{0}$ reaction