77 citations · 607 across the 51 of their papers we have counts for
39 papers · 1 filter
Dynamics of the near threshold eta meson production in proton-proton interaction
R. Czyzykiewicz, P. Moskal, H. -H. Adam +28
We present the results of measurements of the analysing power for the p(pol)p --> pp eta reaction at the excess energies of Q=10 and 36 MeV, and interpret these results within the…
Near threshold production of the pseudoscalar mesons at the COSY-11 facility
P. Moskal, R. Czyzykiewicz, H. -H. Adam +25
We summarise measurements of the COSY-11 collaboration concerning the excitation functions of the near threshold pseudoscalar meson production in the proton-proton interaction. The…
Study of the 3He-eta system in d-p collisions
J. Smyrski, H. -H. Adam, A. Budzanowski +22
We have measured excitation functions for the d+p->3He+X, (X=pi0, eta) channels near the eta production threshold. The data were taken during a slow ramping of the COSY internal de…
Study of the production mechanism of the eta meson by means of analysing power measurements
R. Czyzykiewicz, P. Moskal, H. -H. Adam +26
Information about the production mechanism of the eta meson in proton-proton collisions can be inferred by confronting the experimental studies on the analysing power for the p(pol…
Threshold hyperon production in proton-proton collisions at COSY-11
T. Rozek, D. Grzonka, H. -H. Adam +23
Sigma+ hyperon production was measured at the COSY-11 spectrometer via the p p --> n K+ Sigma+ reaction at excess energies of Q = 13 MeV and Q = 60 MeV. These measurements continue…
Correlation Femtoscopy for Studying Eta Meson Production Mechanism
P. Klaja, P. Moskal, H. -H. Adam +27
The high statistics data from the pp -> ppeta reaction measurement, delivered by the COSY-11 collaboration, are now being evaluated using the correlation femtoscopy technique. This…
Study of the 3He-eta system in d-p collisions at COSY-11
J. Smyrski, H. -H. Adam, A. Budzanowski +27
We present preliminary results from dp --> 3He X (X=pi0,eta) measurements near the eta production threshold. The data were taken during a slow ramping of the COSY internal deuteron…
The analysing power for the p(pol)p --> pp eta reaction at Q=10 MeV
R. Czyzykiewicz, P. Moskal, H. -H. Adam +29
The analyzing power A_y for the p(pol)p --> pp eta reaction has been determined at the beam momentum p_{beam}=2010 MeV/c, corresponding to the excess energy Q=10 MeV. In the paper…
A method to disentangle single- and multi-meson production in missing mass spectra from quasi-free pn --> pn X reactions
P. Moskal, H. -H. Adam, A. Budzanowski +25
The separation of contributions from multi- and single-meson production in the missing mass spectrum of the quasi-free pn --> pnX reaction constitutes a~challenging task when the r…
Drift chamber with a c-shaped frame
J. Smyrski, Ch. Kolf, H. -H. Adam +26
We present the construction of a planar drift chamber with wires stretched between two arms of a c-shaped aluminium frame. The special shape of the frame allows to extendthe moment…
Proposal for the Wide Angle Shower Apparatus (WASA) at COSY-Juelich - "WASA at COSY"
COSY Collaboration, B. Hoistad, J. Ritman
This document describes the physics case, the key experiments proposed and the technical solution for the project "WASA at COSY", which concerns the transfer of the WASA pellet-tar…
Towards the excitation function of the pp -> ppK+K- reaction at COSY-11
P. Winter, H. -H. Adam, A. Budzanowski +23
The ongoing discussion concerning the nature of the scalar resonances f_0(980) and a_0(980) implicated to extend the studies of the pp -> ppK+K- reaction near the production thresh…
Threshold Hyperon Production at COSY-11
T. Rozek, P. Moskal, H. -H. Adam +23
The Lambda, Sigma0 and Sigma+ hyperon production in NN collisions is studied at the COSY - 11 installation in order to investigate the production mechanism as well as to extract in…
Polarization observables in the eta meson production
P. Winter, R. Czyzykiewicz, H. -H. Adam +19
We propose to extend the investigations of the eta meson production in nucleon-nucleon collisions by studying single and double polarization observables. Over the last years, the e…
Energy dependence of the Lambda/Sigma0 production cross section ratio in proton proton interactions
P. Kowina, M. Wolke, H. -H. Adam +26
The production of the Lambda and Sigma0 hyperons has been measured via the pp->pK+Lambda / Sigma0 reaction at the internal COSY-11 facility in the excess energy range between 14 an…
Energy dependence of the Lambda/Sigma0 production cross section ratio in p-p interactions
P. Kowina, H. -H. Adam, A. Budzanowski +23
Measurements of the near threshold Lambda and Sigma0 production via the pp-->pK+Lambda/Sigma0 reaction at COSY--11 have shown that the Lambda/Sigma0 cross section ratio exceeds the…
Total and Differential Cross Sections for the pp-->pp eta-prime Reaction Near Threshold
A. Khoukaz, I. Geck, C. Quentmeier +25
The eta-prime meson production in the reaction pp-->pp eta-prime has been studied at excess energies of Q = 26.5, 32.5 and 46.6 MeV using the internal beam facility COSY-11 at the…
Analysis of the eta meson production mechanism via the p(pol)p-->ppeta reaction
R. Czyzykiewicz, H. -H. Adam, A. Budzanowski +23
Polarisation observables constitute a powerful tool for establishing the production mechanism of the eta meson and for infering the presence of higher partial waves in the final sy…
Production of eta and eta-prime mesons via the quasi-free proton-neutron interaction
P. Moskal, H. -H. Adam, A. Budzanowski +24
A comparison of the close-to-threshold total cross sections for the eta-prime meson production in both the pp --> pp eta-prime and pn --> pn eta-prime reactions should provide insi…
Associated strangeness production in pp collisions near threshold
P. Winter, H. -H. Adam, A. Budzanowski +23
Motivated by the ongoing discussion concerning the nature of the scalar resonances f0(980) and a0(980), the COSY-11 collaboration has taken exclusive data on the pp->ppK+K- reactio…
Analysing power A(y) in the reaction p(pol.)p --> pp eta near threshold
P. Winter, H. H. Adam, A. Budzanowski +23
A first measurement of the analysing power in the reaction p(pol)p --> pp eta near the production threshold has been performed at the internal facility COSY-11 at the COoler SYnchr…
Upper limit for the cross section of the overlapping scalar resonances f0(980) and a0(980) produced in proton-proton collisions in the range of the reaction threshold
P. Moskal, H. -H. Adam, A. Budzanowski +26
Utilizing a missing mass technique we investigate the pp --> ppX reaction scanning beam energies in the range permitting to create a mass close to that of the f0(980) and a0(980) s…
Experimental study of pp eta dynamics in the pp --> ppeta reaction
P. Moskal, H. -H. Adam, A. Budzanowski +24
A high statistics measurement of the pp --> ppeta reaction at an excess energy of Q = 15.5 MeV has been performed at the internal beam facility COSY-11. The stochastically cooled p…
Associated strangeness production at threshold
P. Kowina, M. Wolke, H. -H. Adam +22
The associated strangeness dissociation at threshold has been studied at the COSY-11 facility measuring the hyperon - and the K+K- meson pair production. Measurements of the near t…