We estimate the chemical freeze-out of light nuclear clusters for NICA energies of above 2 A GeV. On the one hand we use results from the low energy domain of about 35 A MeV, where medium effects ...have been shown to be important to explain experimental results. On the high energy side of LHC energies the statistical model without medium effects has provided results for the chemical freeze-out. The two approaches extrapolated to NICA energies show a discrepancy that can be attributed to medium effects and that for the deuteron/proton ratio amounts to a factor of about three. These findings underline the importance of a detailed investigation of light cluster production at NICA energies.
.
The new data on the elastic
pp
and single pion production reaction
p
p
→
p
n
π
+
taken at the incident proton momentum of 1683MeV/
c
are presented. The data on the
p
p
→
p
n
π
+
reaction are ...compared with predictions from the OPE model. To extract the contributions of the leading partial waves, the single-pion production data are analyzed in the framework of the event-by-event maximum-likelihood method together with the data measured earlier.
Program development and computing for off-line data analysis of the multi purposes detector (MPD) experiment at NICA collider are considered. Detailed detector simulation of the MPD and event ...generation with Monte Carlo methods are very important in the experimental analysis for the determination of the detector acceptance and resolution, and to distinguish background event of known processes from new physics. Support of the interactive graphical presentation of simulated and experimental data at all levels, from the event display are also shown.
The Multi-Purpose Detector (MPD) is designed to study heavy-ion collisions at the Nuclotron-based heavy Ion Collider fAcility (NICA) at JINR, Dubna. Its main components located inside a ...superconducting solenoid are a tracking system composed of a silicon microstrip vertex detector followed by a large volume time-projection chamber, a time-of-flight system for particle identification and a barrel electromagnetic calorimeter. A zero degree hadron calorimeter is designed specifically to measure the energy of spectators. In this paper, all parts of the apparatus are described and their tracking and particle identification parameters are discussed in some detail.
The MPD detector at the NICA heavy-ion collider at JINR Afanasiev, S.V.; Alfeev, V.S.; Aslanyan, P.Zh ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
02/2011, Volume:
628, Issue:
1
Journal Article
Peer reviewed
The MultiPurpose Detector (MPD) is designed to study heavy-ion collisions at the Nuclotron-based heavy Ion Collider fAcility (NICA) at JINR, Dubna. Its main components located inside a ...superconducting solenoid are a tracking system composed of a silicon microstrip vertex detector followed by a large volume time-projection chamber, a time-of-flight system for particle identification and a barrel electromagnetic calorimeter. A zero degree hadron calorimeter is designed specifically to measure the energy of spectators. In this paper, all parts of the apparatus are described and their tracking and particle identification (PID) parameters are discussed in some detail.
.
The project NICA (Nuclotron-based Ion Collider fAcility) is aimed to study dense baryonic matter in heavy-ion collisions in the energy range up to
GeV with average luminosity of
L
= 10
27
cm
-2
s
...-1
(for
197
Au
79
). The experimental program at the NICA collider will be performed with the Multi-Purpose Detector (MPD). We report on the main physics objectives of the NICA heavy-ion program and present the main detector components.
The Multi-Purpose Detector (MPD) is under construction to investigate heavy ion collisions at the NICA collider in the energy range sNN=4−11GeV. The MPD physics purpose is to get a better ...understanding of the QCD matter under extreme conditions of high baryonic density by studying collective phenomena, Λ polarization, dilepton yields, multi-strange hyperons and hypernuclei production. The MPD construction is progressing in accordance with the schedule.
The new data on the elastic
pp
and single-pion production reaction
pp
→
pnπ
+
taken at the incident proton momentum 1581 MeV/
c
are presented. To extract contributions of the leading partial waves ...the single-pion production data are analyzed in the framework of the event-by-event maximum-likelihood method together with
pp
→
ppπ
+
data measured earlier and the
pp
→
pnπ
+
data taken at 1628 MeV/
c
. The analysis shows that at 1581 MeV/
c
the largest contributions stem from the
3
P
2
,
3
P
1
,
3
P
0
and
3
F
2
initial partial waves. From these partial waves we also deduce contributions for the production of the
Δ
(1232) and
N
(1440) states.
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