activity
20112026
most citedEvidence for a New Resonance from Polarized Neutron-Proton Scattering

179 citations · 1.5k across the 44 of their papers we have counts for

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25 papers · 1 filter

nucl-ex2025

Three-Nucleon Dynamics in the dp breakup collisions at 190 MeV/nucleon using the WASA detector at COSY-Jülich

P. Adlarson, W. Augustyniak, W. Bardan +87

The differential cross section for the H breakup reaction at deuteron beam energy of 380 MeV has been determined with high precision for 189 angular configurations o…

nucl-ex2024★ 3 cited

Non-maximal entanglement of photons from positron-electron annihilation demonstrated using a novel plastic PET scanner

P. Moskal, D. Kumar, S. Sharma +25

In state-of-the-art Positron Emission Tomography (PET), information about annihilation photon polarization is unavailable. Here, we present a PET scanner built from plastic scintil…

nucl-ex2021

Physics Beyond the Standard Model with the J-PET detector

Elena Perez del Rio

The Positronium (Ps) system, a bound state of an electron and a positron, is suitable for testing the predictions of quantum electrodynamics (QED), since its properties can be pert…

nucl-ex2018★ 11 cited

Total and differential cross sections of -production in proton-deuteron fusion for excess energies between and

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

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

nucl-ex2017★ 3 cited

Importance of d-wave contributions in the charge symmetry breaking reaction

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 using the WASA-at-C…

nucl-ex2017★ 1 cited

Isoscalar Single-Pion Production in the Region of Roper and Resonances

COSY Collaboration, P. Adlarson, W. Augustyniak +90

Exclusive measurements of the quasi-free and reactions have been performed by means of collisions at = 1.2 GeV using the WASA detector setu…

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 Dalitz plot distribution

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

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

nucl-ex2016★ 17 cited

Search for an Isospin I =3 Dibaryon

P. Adlarson, W. Augustyniak, W. Bardan +91

Various theoretical calculations based on QCD or hadronic interactions predict that in addition to the recently observed dibaryon resonance with there…

nucl-ex2015★ 66 cited

K absorption on two nucleons and ppK bound state search in the p final state

O. Vazquez Doce, L. Fabbietti, M. Cargnelli +18

We report the measurement of K absorption processes in the p final state and the first exclusive measurement of the two nucleon absorption (2NA) with the KLOE detector. Th…

nucl-ex2015★ 18 cited

Measurements of Branching Ratios for Decays into Charged Particles

P. Adlarson, W. Augustyniak, W. Bardan +96

The WASA-at-COSY experiment has collected events with -mesons produced via the reaction at . Usi…

nucl-ex2014★ 76 cited

Measurement of the Reaction in Search for the Recently Observed Resonance

P. Adlarson, W. Augustyniak, W. Bardan +99

Exclusive measurements of the quasi-free reaction have been performed by means of collisions at = 2.27 GeV using the WASA detector setup at COSY. Total…

nucl-ex2014★ 34 cited

ABC Effect and Resonance Structure in the Double-Pionic Fusion to He

P. Adlarson, W. Augustyniak, W. Bardan +100

Exclusive and kinematically complete measurements of the double pionic fusion to He have been performed in the energy region of the so-called ABC effect, which denotes a pronou…

nucl-ex2014★ 77 cited

Neutron-Proton Scattering in the Context of the (2380) Resonance

P. Adlarson, W. Augustyniak, W. Bardan +105

New data on quasifree polarized neutron-proton scattering, in the region of the recently observed resonance structure, have been obtained by exclusive and kinematically compl…

nucl-ex2014★ 9 cited

Charge Symmetry Breaking in dd->4Heπ0 with WASA-at-COSY

COSY Collaboration, P. Adlarson, W. Augustyniak +102

Charge symmetry breaking (CSB) observables are a suitable experimental tool to examine effects induced by quark masses on the nuclear level. Previous high precision data from TRIUM…

nucl-ex2014★ 179 cited

Evidence for a New Resonance from Polarized Neutron-Proton Scattering

P. Adlarson, W. Augustyniak, W. Bardan +104

Exclusive and kinematically complete high-statistics measurements of quasifree polarized scattering have been performed in the energy region of the narrow resonance stru…

nucl-ex2014★ 14 cited

Cross section ratio and angular distributions of the reaction p + d -> 3He + eta at 48.8 MeV and 59.8 MeV excess energy

P. Adlarson, W. Augustyniak, W. Bardan +104

We present new data for angular distributions and on the cross section ratio of the p + d -> 3He + eta reaction at excess energies of Q = 48.8 MeV and Q = 59.8 MeV. The data have b…

nucl-ex2013★ 78 cited

Measurement of the Reaction in Search for the Recently Observed Resonance Structure in and systems

P. Adlarson, W. Augustyniak, W. Bardan +110

Exclusive measurements of the quasi-free reaction have been performed by means of collisions at = 1.2 GeV using the WASA detector setup at COSY. Total…

nucl-ex2013★ 6 cited

Investigation of the dd -> 3He n π0 reaction with the FZ Jülich WASA-at-COSY facility

COSY Collaboration, P. Adlarson, W. Augustyniak +112

An exclusive measurement of the dd -> 3He n π0 reaction was carried at a beam momentum of p = 1.2 GeV/c using the WASA-at-COSY facility. For the first time data on the total cross…

nucl-ex2013★ 59 cited

Search for the eta-mesic 4He with WASA-at-COSY detector

P. Adlarson, W. Augustyniak, W. Bardan +111

An exclusive measurement of the excitation function for the dd->3Heppi- reaction was performed at the Cooler Synchrotron COSY-Juelich with the WASA-at-COSY detection system. The da…

nucl-ex2012★ 128 cited

Isospin Decomposition of the Basic Double-Pionic Fusion in the Region of the ABC Effect

P. Adlarson, W. Augustyniak, W. Bardan +111

Exclusive and kinematically complete high-statistics measurements of the basic double pionic fusion reactions pn -> dpi0pi0, pn -> d pi+pi- and pp -> dpi+pi0 have been carried out…

nucl-ex2012★ 32 cited

ABC Resonance Structure in the Double-Pionic Fusion to 4He

P. Adlarson, W. Augustyniak, W. Bardan +109

Exclusive and kinematically complete high-statistics measurements of the double pionic fusion reaction He have been performed in the energy range 0.8 - 1.4 GeV c…

nucl-ex2012★ 8 cited

Proceedings of the second International PrimeNet Workshop

P. Adlarson, M. Amaryan, M. Bashkanov +46

These are the proceedings of the second PrimeNet Workshop, held in September 26-28, 2011, at the campus of Forschungszentrum Jülich, Germany. This workshop is part of the activitie…

nucl-ex2012

Search for eta-mesic 4He with the WASA-at-COSY detector

Wojciech Krzemien

We performed a search for the 4He-eta bound state via exclusive measurement of the excitation function for the dd->3Heppi- reaction, where the outgoing p-pi- pair originates from t…