L. Heijkenskjöld

activity

20112024

most citedLimit on the production of a light vector gauge boson in phi meson decays with the KLOE detector

191 citations · 2k across the 54 of their papers we have counts for

collaborators

56 papers

nucl-ex2024

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

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

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

nucl-ex2022★ 3 cited

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…

nucl-ex2022★ 1 cited

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

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

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

nucl-ex2021

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 $d σ / d Ω$ and the linearly polarized photon beam asymmetry $Σ_{3}$ for Compton scattering on the proton below pion threshold ha…

nucl-ex2021★ 2 cited

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

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

The quasifree $γ d \to π^{0} n (p)$ photon beam asymmetry, $Σ$ , has been measured at photon energies, $E_{γ}$ , from 390 to 610 MeV, corresponding to center of mass energy fr…

nucl-ex2020★ 9 cited

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

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

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

nucl-ex2020★ 10 cited

Search for the $η$ mesic $^{3}$ He in the $p d \to d p π^{0}$ reaction with the WASA-at-COSY facility

P. Adlarson, W. Augustyniak, M. Bashkanov +80

The excitation function for the $p d \to$ $d p π^{0}$ reaction has been measured by WASA-at-COSY experiment with the aim of searching for $^{3}\hspace{-0.03cm}\mbox{He}$- $η$ …

hep-ex2020★ 7 cited

Differential Cross Sections for Neutron-Proton Scattering in the Region of the $d^{*} (2380)$ Dibaryon Resonance

P. Adlarson, W. Augustyniak, W. Bardan +102

Differential cross sections have been extracted from exclusive and kinematically complete high-statistics measurements of quasifree polarized $n p$ scattering performed in the…

nucl-ex2019★ 20 cited

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

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…

nucl-ex2019★ 7 cited

Study of Three-Nucleon Dynamics in the dp breakup collisions using the WASA detector

P. Adlarson, W. Augustyniak, W. Bardan +86

Differential cross section for the 1H(d,pp)n breakup reaction at deuteron beam energy of 340 MeV has been measured with the use of WASA detector at COSY-Juelich. The set of proton-…

nucl-ex2019★ 9 cited

Search for eta mesic 3He with the WASA-at-COSY facility in the pd-> 3He 2gamma and pd-> 3He 6gamma reactions

P. Adlarson, W. Augustyniak, W. Bardan +81

We report on the experimental search for the bound state of an $η$ meson and $^{3}\hspace{-0.03cm}\mbox{He}$ nucleus performed using the WASA-at-COSY detector setup. In order to se…

nucl-ex2019★ 14 cited

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 $Σ_{2 z}$ has been measured for the first time in the $Δ (1232)$ resonance region using a circularly polarized photon beam incident on a lo…

nucl-ex2018★ 21 cited

Experimental study of the $γ p \to K^{0} Σ^{+}$ , $γ n \to K^{0} Λ$ , and $γ n \to K^{0} Σ^{0}$ reactions at the Mainz Microtron

C. S. Akondi, K. Bantawa, D. M. Manley +78

This work measured $d σ / d Ω$ for neutral kaon photoproduction reactions from threshold up to a c.m.\ energy of 1855MeV, focussing specifically on the $γ p \to K^{0} Σ^{+}$ , $γn\righ…

nucl-ex2018★ 9 cited

First measurement of helicity-dependent cross sections in pi0-eta photoproduction from quasi-free nucleons

A. Käser, M. Dieterle, L. Witthauer +80

The helicity-dependent cross sections for the photoproduction of $π^{0} η$ pairs have been measured for the first time. The experiment was performed at the tagged photon facility of t…

nucl-ex2018★ 20 cited

Deuteron photodisintegration by polarized photons in the region of the $d^{*} (2380)$

M. Bashkanov, S. Kay, D. P. Watts +70

We report the first large-acceptance measurement of the beam-spin asymmetry for deuteron photodisintegration ( $γ d \to p n$ ) in the photon energy range $400 < E_{γ} < 630$ ~MeV. The mea…

nucl-ex2018★ 1 cited

Backward single-pion production in the $pd \to^{3} He π^{0}$ reaction with WASA-at-COSY

P. Adlarson, W. Augustyniak, W. Bardan +89

New data on the production of single neutral pions in the $p d \to^{3} He π^{0}$ reaction are presented. For fifteen proton beam momenta between $p_p=1.60\;\textrm{GeV…

nucl-ex2018★ 16 cited

An Isotensor Dibaryon in the $pp \to pp π^{+} π^{-}$ Reaction?

P. Adlarson, W. Augustyniak, W. Bardan +81

Exclusive measurements of the quasi-free $pp \to pp π^{+} π^{-}$ reaction have been carried out at WASA@COSY by means of $p d$ collisions at $T_{p}$ = 1.2 GeV. Total and differential cross…

nucl-ex2018★ 3 cited

On the Production of an Isotensor Dibaryon in the $pp \to pp π^{+} π^{-}$ Reaction

P. Adlarson, W. Augustyniak, W. Bardan +81

Exclusive measurements of the quasi-free $pp \to pp π^{+} π^{-}$ reaction have been performed by means of $p d$ collisions at $T_{p}$ = 1.2 GeV using the WASA detector setup at COSY. Total…

hep-ex2018★ 9 cited

Search for $C$ violation in the decay $η \to π^{0} + e^{+} + e^{-}$ with WASA-at-COSY

P. Adlarson, W. Augustyniak, W. Bardan +90

We report on the investigation of the rare decay $η \to π^{0} + e^{+} + e^{-}$ which is of interest to study both $C$ violation in the electromagnetic interaction and to…

nucl-ex2018★ 11 cited

Total and differential cross sections of $η$ -production in proton-deuteron fusion for excess energies between $Q_{η} = 13 MeV$ and $Q_{η} = 81 MeV$

P. Adlarson, W. Augustyniak, W. Bardan +90

New data on both total and differential cross sections of the production of $η$ mesons in proton-deuteron fusion to $^{3} He η$ in the excess energy region $13.6\;\text{MeV}…

nucl-ex2017★ 2 cited

Spin dependence of η meson production in proton-proton collisions close to threshold

P. Adlarson, W. Augustyniak, W. Bardan +88

Taking advantage of the high acceptance and axial symmetry of the WASA-at-COSY detector, and the high degree of the polarized proton beam of COSY, the reaction pp{\to} ppη has been…

nucl-ex2017★ 3 cited

Importance of d-wave contributions in the charge symmetry breaking reaction $dd \to^{4} He π^{0}$

P. Adlarson, W. Augustyniak, W. Bardan +89

This letter reports a first quantitative analysis of the contribution of higher partial waves in the charge symmetry breaking reaction $dd \to^{4} He π^{0}$ using the WASA-at-C…

nucl-ex2016★ 37 cited

Search for eta-mesic 4He in the dd->3He n pi0 and dd->3He p pi- reactions with the WASA-at-COSY facility

P. Adlarson, W. Augustyniak, W. Bardan +90

The search for 4He-eta bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the dd->3He n pi0 and dd->3He p pi- processes. T…

nucl-ex2016★ 20 cited

Measurement of the $ω \to π^{+} π^{-} π^{0}$ Dalitz plot distribution

COSY Collaboration, P. Adlarson, W. Augustyniak +93

Using the production reactions $pd\to {}^3\mbox{He}\,ω$ and $pp \to pp ω$ , the Dalitz plot distribution for the $ω \to π^{+} π^{-} π^{0}$ decay is studied with the WASA detector at COSY, ba…

First measurement using elliptically polarized photons of the double-polarization observable E for γp→pπ0 and γp→nπ+

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

Measurement of the helicity dependence for single π0 photoproduction from the deuteron

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

Single π0 Production Off Neutrons Bound in Deuteron with Linearly Polarized Photons

Helicity-dependent cross sections for the photoproduction of π0 pairs from nucleons

Search for the η mesic 3He in the pd→dpπ0 reaction with the WASA-at-COSY facility

Differential Cross Sections for Neutron-Proton Scattering in the Region of the d∗(2380) Dibaryon Resonance

Signatures of the d∗(2380) hexaquark in d(γ,pn)

Study of Three-Nucleon Dynamics in the dp breakup collisions using the WASA detector

Search for eta mesic 3He with the WASA-at-COSY facility in the pd-> 3He 2gamma and pd-> 3He 6gamma reactions

Spin polarizabilities of the proton by measurement of Compton double-polarization observables

Experimental study of the γp→K0Σ+, γn→K0Λ, and γn→K0Σ0 reactions at the Mainz Microtron

First measurement of helicity-dependent cross sections in pi0-eta photoproduction from quasi-free nucleons

Deuteron photodisintegration by polarized photons in the region of the d∗(2380)

Backward single-pion production in the pd→3Heπ0 reaction with WASA-at-COSY

An Isotensor Dibaryon in the pp→ppπ+π− Reaction?

On the Production of an Isotensor Dibaryon in the pp→ppπ+π− Reaction

Search for C violation in the decay η→π0+e++e− with WASA-at-COSY

Total and differential cross sections of η-production in proton-deuteron fusion for excess energies between Qη​=13MeV and Qη​=81MeV

Spin dependence of η meson production in proton-proton collisions close to threshold

Importance of d-wave contributions in the charge symmetry breaking reaction dd→4Heπ0

Search for eta-mesic 4He in the dd->3He n pi0 and dd->3He p pi- reactions with the WASA-at-COSY facility

Measurement of the ω→π+π−π0 Dalitz plot distribution

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

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

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

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

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

Search for the $η$ mesic $^{3}$ He in the $p d \to d p π^{0}$ reaction with the WASA-at-COSY facility

Differential Cross Sections for Neutron-Proton Scattering in the Region of the $d^{*} (2380)$ Dibaryon Resonance

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

Experimental study of the $γ p \to K^{0} Σ^{+}$ , $γ n \to K^{0} Λ$ , and $γ n \to K^{0} Σ^{0}$ reactions at the Mainz Microtron

Deuteron photodisintegration by polarized photons in the region of the $d^{*} (2380)$

Backward single-pion production in the $pd \to^{3} He π^{0}$ reaction with WASA-at-COSY

An Isotensor Dibaryon in the $pp \to pp π^{+} π^{-}$ Reaction?

On the Production of an Isotensor Dibaryon in the $pp \to pp π^{+} π^{-}$ Reaction

Search for $C$ violation in the decay $η \to π^{0} + e^{+} + e^{-}$ with WASA-at-COSY

Total and differential cross sections of $η$ -production in proton-deuteron fusion for excess energies between $Q_{η} = 13 MeV$ and $Q_{η} = 81 MeV$

Importance of d-wave contributions in the charge symmetry breaking reaction $dd \to^{4} He π^{0}$

Measurement of the $ω \to π^{+} π^{-} π^{0}$ Dalitz plot distribution