cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.132014.v1/t43
title: "dcs_42" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma= 870. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t44
title: "dcs_43" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma= 887. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t45
title: "dcs_44" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma= 903. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t46
title: "dcs_45" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma= 919. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t47
title: "dcs_46" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma= 936. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.25549/vercoutere-ouc110637104
title: Fish molded in clay II

description: Glazed clay sculpture of a dark blue with black spots swimming fish; part of tail repaired with glue
DOI: 10.17182/hepdata.132014.v1/t48
title: "dcs_47" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma= 952. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t49
title: "dcs_48" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma= 968. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t50
title: "dcs_49" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma= 983. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t51
title: "dcs_50" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma= 999. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t52
title: "dcs_51" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1015. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t53
title: "dcs_52" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1030. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t54
title: "dcs_53" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1046. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t55
title: "dcs_54" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1061. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).
DOI: 10.17182/hepdata.132014.v1/t56
title: "dcs_55" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1076. MeV
description: A2 Collaboration at MAMI.
The helicity-dependent single $\pi^0$ photoproduction cross section
on the deuteron and the angular dependence of the double
polarisation observable E for the quasi-free single $\pi^0$
production off the proton and the neutron have been measured,
for the first time, from the threshold region up to the photon
energy 1.4 GeV. The experiment was performed at the tagged
photon facility of the MAMI accelerator and used a circularly
polarised photon beam and longitudinally polarised deuteron target.
The reaction products were detected using the large acceptance
Crystal Ball/TAPS calorimeter, which covered 97% of the full solid
angle. Comparing the cross section from the deuteron with the sum
of free nucleon cross sections provides a quantitative estimate of
the effects of the nuclear medium on pion production. In contrast,
comparison of the E helicity asymmetry data from quasi-free
protons off deuterium with data from a free proton target
indicates that nuclear effects do not significantly affect this
observable. As a consequence, it is deduced that the helicity
asymmetry E on a free neutron can be reliably extracted from
measurements on a deuteron in quasi-free kinematics.
Main sources of systematic uncertainties come from the target
polarisation (10%) and from the unpolarised background
subtraction (from 2% up to 10%).