20 research outputs found
Design of the Pluto Event Generator
We present the design of the simulation package Pluto, aimed at the study of
hadronic interactions at SIS and FAIR energies. Its main mission is to offer a
modular framework with an object-oriented structure, thereby making additions
such as new particles, decays of resonances, new models up to modules for
entire changes easily applicable. Overall consistency is ensured by a plugin-
and distribution manager. Particular features are the support of a modular
structure for physics process descriptions, and the possibility to access the
particle stream for on-line modifications. Additional configuration and
self-made classes can be attached by the user without re-compiling the package,
which makes Pluto extremely configurable.Comment: Presented at the 17th International Conference on Computing in High
Energy and Nuclear Physic
Design of the Pluto Event Generator
We present the design of the simulation package Pluto, aimed at the study of
hadronic interactions at SIS and FAIR energies. Its main mission is to offer a
modular framework with an object-oriented structure, thereby making additions
such as new particles, decays of resonances, new models up to modules for
entire changes easily applicable. Overall consistency is ensured by a plugin-
and distribution manager. Particular features are the support of a modular
structure for physics process descriptions, and the possibility to access the
particle stream for on-line modifications. Additional configuration and
self-made classes can be attached by the user without re-compiling the package,
which makes Pluto extremely configurable.Comment: Presented at the 17th International Conference on Computing in High
Energy and Nuclear Physic
Design of the Pluto Event Generator
We present the design of the simulation package Pluto, aimed at the study of
hadronic interactions at SIS and FAIR energies. Its main mission is to offer a
modular framework with an object-oriented structure, thereby making additions
such as new particles, decays of resonances, new models up to modules for
entire changes easily applicable. Overall consistency is ensured by a plugin-
and distribution manager. Particular features are the support of a modular
structure for physics process descriptions, and the possibility to access the
particle stream for on-line modifications. Additional configuration and
self-made classes can be attached by the user without re-compiling the package,
which makes Pluto extremely configurable.Comment: Presented at the 17th International Conference on Computing in High
Energy and Nuclear Physic
Inclusive Dielectron Production in Ar+KCl Collisions at 1.76 AGeV studied with HADES
Results of the HADES measurement of inclusive dielectron production in Ar+KCl
collisions at a kinetic beam energy of 1.76 AGeV are presented. For the first
time, high mass resolution spectroscopy was performed. The invariant mass
spectrum of dielectrons is compared with predictions of UrQMD and HSD transport
codes.Comment: 4 pages, 3 figures - To appear in the conference proceedings for
Quark Matter 2009, March 30 - April 4, Knoxville, Tennesse
Future perspectives at SIS-100 with HADES-at-FAIR
Currently, the HADES spectrometer undergoes un upgrade program to be prepared
for measurements at the upcoming SIS-100 synchrotron at FAIR. We describe the
current status of the HADES di-electron measurements at the SIS-18 and our
future plans for SIS-100.Comment: Invited contribution presented at the XLVII International Winter
Meeting on Nuclear Physics, Bormio (Italy), Jan. 26-30, 200
Phi decay: a relevant source for K- production at SIS energies?
We present phase space distributions and multiplicities of K+, K- and phi
mesons produced in Ar+KCl reactions at a kinetic beam energy of 1.756 AGeV and
measured with the HADES spectrometer. The inverse slope parameters and yields
of kaons supplement the systematics of previous measurements. The percentage of
K- mesons coming fromphi decay is found to be 18+- 7%
Charged pion production in C+C and Ar+KCl collisions measured with HADES
Results of a study of charged pion production in 12C+12C collisions at
incident beam energies of 1A GeV and 2A GeV, and 40Ar+natKCl at 1.76AGeV, using
the spectrometer HADES at GSI, are presented. We have performed a measurement
of the transverse momentum distributions of pi+- mesons covering a fairly large
rapidity interval, in case of the C+C collision system for the first time. The
yields, transverse mass and angular distributions are compared with a transport
model as well as with existing data from other experiments.Comment: 7 pages, 2 figures Contribution presented at the XLVII International
Winter Meeting on Nuclear Physics, Bormio (Italy), Jan. 26-30, 200
Measurement of charged pions in 12C + 12C collisions at 1A GeV and 2A GeV with HADES
We present the results of a study of charged pion production in 12C + 12C
collisions at incident beam energies of 1A GeV and 2A GeV using the HADES
spectrometer at GSI. The main emphasis of the HADES program is on the
dielectron signal from the early phase of the collision. Here, however, we
discuss the data with respect to the emission of charged hadrons, specifically
the production of pi+- mesons, which are related to neutral pions representing
a dominant contribution to the dielectron yield. We have performed the first
large-angular range measurement of the distribution of pi+- mesons for the 12C
+ 12C collision system covering a fairly large rapidity interval. The pion
yields, transverse-mass and angular distributions are compared with
calculations done within a transport model, as well as with existing data from
other experiments. The anisotropy of pion production is systematically
analyzed.Comment: 15 pages, 13 figures, v2 - the text unchanged, only full author list
added to METADATA (in v1 only the first author and collaboration name),
reference to published paper adde