Publications (39)
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-…
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 bee…
Observation of strong final-state effects in pi+ production in pp collisions at 400 MeV
A. Betsch, R. Bilger, W. Brodowski +29
Differential cross sections of the reactions and have been measured at MeV by detecting the charged ejectiles in the angular range $4^0 \…
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…
The Development of the NNBAR Experiment
F. Backman, J. Barrow, Y. BeÃler +40
The NNBAR experiment for the European Spallation Source will search for free neutrons converting to antineutrons with a sensitivity improvement of three orders of magnitude compare…
Higher Partial Waves in p+p->p+p+eta near Threshold
H. Calen, J. Dyring, G. Faldt +35
Exclusive measurements of the production of eta mesons in the p+p->p+p+eta reaction have been carried out at excess energies of 16 and 37 MeV above threshold. The deviations from p…
Exclusive measurement of two-pion production in the dd --> 4Hepipi reaction
S. Keleta, Chr. Bargholtz, M. Bashkanov +46
The results from the first kinematically complete measurement of the dd --> 4Hepipi reaction are reported. The aim was to investigate a long standing puzzle regarding the origin of…
Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons
PANDA Collaboration, W. Erni, I. Keshelashvili +411
To study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitation…
Measurement of the Reaction with Polarized Beam in the Region of the Resonance
P. Adlarson, W. Augustyniak, W. Bardan +91
We report on a high-statistics measurement of the most basic double pionic fusion reaction over the energy region of the resonance by use of a…
Delta Delta Excitation in Proton-Proton Induced pi0pi0 Production
T. Skorodko, M. Bashkanov, D. Bogoslawsky +37
Exclusive measurements of the reaction have been performed at CELSIUS/WASA at energies from threshold up to = 1.3 GeV. Total and differential cross sectio…
Polarisation of the omega meson in the pd-->3He+omega reaction at 1360 and 1450 MeV
K. Schonning, Chr. Bargholtz, M. Bashkanov +46
The tensor polarisation of omega mesons produced in the pd-->3He+omega reaction has been studied at two energies near threshold. The 3He nuclei were detected in coincidence with th…
Exclusive Measurement of the Reaction at 1.1 GeV
M. Bashkanov, D. Bogoslawsky, H. Calen +36
First exclusive data for the reaction have been obtained at CELSIUS with the WASA detector setup at a beam energy of = 1.1 GeV. Total and differential cro…
Double-Pionic Fusion of Nuclear Systems and the ABCEffect -- Aproaching a Puzzle by Exclusive and Kinematically Complete Measurements
M. Bashkanov, C. Bargholtz, M. Berlowski +46
The ABC effect - a puzzling low-mass enhancement in the invariant mass spectrum - is well-known from inclusive measurements of two-pion production in nuclear fusion reaction…
ABC Effect in Basic Double-Pionic Fusion --- Observation of a new resonance?
P. Adlarson, C. Adolph, W. Augustyniak +116
We report on a high-statistics measurement of the basic double pionic fusion reaction over the energy region of the so-called ABC effect, a pronounced low-mass e…
Two-Pion Production in Nucleon-Nucleon Collisions and the ABC-Effect - Approaching a Puzzleby exclusive and Kinematically complete Measurements
T. Skorodko, M. Bashkanov, C. Bargholtz +50
The ABC effect - a puzzling low-mass enhancement in the invariant mass spectrum - is known from inclusive measurements of two-pion production in nuclear collisions, where it…
Study of the p p -> p p pi+ pi- Reaction in the Low-Energy Tail of the Roper Resonance
J. Paetzold, M. Bashkanov, R. Bilger +27
Exclusive measurements of the p p -> p p pi+ pi- reaction have been carried out at Tp = 775 MeV at CELSIUS using the PROMICE/WASA setup. Together with data obtained at lower energy…
Anisotropy in the pion angular distribution of the reaction pp -> pp pi0 at 400 MeV
P. Thorngren Engblom, S. Negasi Keleta, F. Cappellaro +23
The reaction pp -> pp pi0 was studied with the WASA detector at the CELSIUS storage ring. The center of mass angular distribution of the pi0 was obtained by detection of the gamma…
Particle Physics at the European Spallation Source
H. Abele, A. Alekou, A. Algora +176
Presently under construction in Lund, Sweden, the European Spallation Source (ESS) will be the world's brightest neutron source. As such, it has the potential for a particle physic…
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 se…
Evidence for a 'Narrow' Roper Resonance - the Breathing Mode of the Nucleon
H. Clement, T. Skorodko, M. Bashkanov +43
All the time since its discovery the N(1440) baryon state, commonly known as Roper resonance, has been a state with many question marks - despite of its 4-star ranking in the p…
Technical Design Report for PANDA Electromagnetic Calorimeter (EMC)
PANDA Collaboration, W. Erni, I. Keshelashvili +407
This document presents the technical layout and the envisaged performance of the Electromagnetic Calorimeter (EMC) for the PANDA target spectrometer. The EMC has been designed to m…
Production of the omega meson in the pd --> 3He omega reaction at 1450 MeV and 1360 MeV
K. Schonning, Chr. Bargholtz, M. Bashkanov +46
The production of mesons in the He reaction has been studied at two energies near the kinematic threshold, MeV and MeV. The differential…
Exclusive Measurements of pp -> dpi+pi0: Double-Pionic Fusion without ABC Effect
F. Kren, M. Bashkanov, D. Bogoslawsky +37
Exclusive measurements of the reaction pp -> dpi+pi0 have been carried out at T_p = 1.1 GeV at the CELSIUS storage ring using the WASA detector. The isovector pi+pi0 channel exhibi…
Leptonic decays of the eta meson with the WASA detector at CELSIUS
M. Berlowski, H. Calen, K. Fransson +3
Decay channels of the eta meson with at least one lepton pair in the final state are discussed. Preliminary results on electron-positron pair production from the pd->He eta reactio…
Search for Narrow NNpi Resonances in Exclusive p p -> p p pi+ pi- Measurements
W. Brodowski, J. Paetzold, R. Bilger +26
Narrow structures in the range of a few MeV have been searched for in p p pi+ and p p pi- invariant mass spectra obtained from exclusive measurements of the p p -> p p pi+ pi- reac…
Technical Design Report for the PANDA Solenoid and Dipole Spectrometer Magnets
The PANDA Collaboration, W. Erni, I. Keshelashvili +407
This document is the Technical Design Report covering the two large spectrometer magnets of the PANDA detector set-up. It shows the conceptual design of the magnets and their antic…
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…
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…
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…
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…
Technical Design Report for the PANDA Endcap Disc DIRC
Panda Collaboration, F. Davi, W. Erni +460
PANDA (anti-Proton ANnihiliation at DArmstadt) is planned to be one of the four main experiments at the future international accelerator complex FAIR (Facility for Antiproton and I…
PANDA Phase One
G. Barucca, F. Davì, G. Lancioni +421
The Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. T…
Feasibility studies of time-like proton electromagnetic form factors at PANDA at FAIR
PANDA Collaboration, B. Singh, W. Erni +502
Simulation results for future measurements of electromagnetic proton form factors at \PANDA (FAIR) within the PandaRoot software framework are reported. The statistical precision w…
Production of eta and 3pi mesons in the pd->3HeX reaction at 1360 and 1450 MeV
K. Schoenning, Chr. Bargholtz, M. Bashkanov +43
The cross sections of the pd -> 3He eta, pd -> 3He pi0 pi0 pi0 and pd -> 3He pi+ pi- pi0 reactions have been measured at beam kinetic energies T_p= 1360 MeV and T_p= 1450 MeV using…
Quasi-free production of the eta and eta-prime mesons in nucleon-nucleon collisions
J. Stepaniak, H. Calen
Some aspects of the quasi-free production of mesons in the near threshold region are discussed. A method of data analysis used by WASA/PROMICE Collaboration to extract the excitati…
Feasibility study for the measurement of TDAs at PANDA in
PANDA Collaboration, B. Singh, W. Erni +508
The exclusive charmonium production process in annihilation with an associated meson is studied in the framework of QCD collinear factoriza…
Two-Pion Production in Proton-Proton Collisions -- Experimental Total Cross Sections and their Isospin Decomposition
T. Skorodko, M. Bashkanov, D. Bogoslawsky +37
The two-pion production in pp-collisions has been investigated at CELSIUS in exclusive measurements from threshold up to = 1.36 GeV. Total and differential cross sections hav…
The pd --> ^3He eta pi0 reaction at T_p = 1450 MeV
K. Schoenning, Chr. Bargholtz, M. Bashkanov +44
The cross section for the pd --> ^3He eta pi0 reaction has been measured at a beam energy of 1450 MeV using the WASA detector at the CELSIUS storage ring and detecting one ^3He and…
Search for the mesic He in the reaction with the WASA-at-COSY facility
P. Adlarson, W. Augustyniak, M. Bashkanov +80
The excitation function for the reaction has been measured by WASA-at-COSY experiment with the aim of searching for $^{3}\hspace{-0.03cm}\mbox{He}$-$η…