cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.132014.v1/t57
title: "dcs_56" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1091. 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/t58
title: "dcs_57" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1105. 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/t59
title: "dcs_58" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1120. 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/t60
title: "dcs_59" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1134. 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/t61
title: "dcs_60" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1148. 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/t62
title: "dcs_61" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1162. 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/t63
title: "dcs_62" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1176. 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/t64
title: "dcs_63" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1190. 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-ouc110637150
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/t65
title: "dcs_64" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1203. 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/t66
title: "dcs_65" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1217. 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/t67
title: "dcs_66" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1230. 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/t68
title: "dcs_67" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1243. 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/t69
title: "dcs_68" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1256. 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/t70
title: "dcs_69" of "Measurement of the helicity dependence for single $\pi^{0}$ photoproduction from the deuteron"

description: Helicity-dependent differential cross section on deuteron at Egamma=1268. 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%).