Multiplicity, momentum and angular characteristics of π− mesons forpC,dC, αC and CC interactions at 4.2 GeV/c per nucleon

Agakishiyev, H. N.; Akhababian, N.; Armutlijsky, D.; Baldin, A.M.; Bartke, J.; Bekmirsaev, R.; Bogdanowicz, J.; Cheplakov, A.; Didenko, L.; Gasparian, A.P.; Григалашвили, Н.; Grishin, V.G.; Gudima, K. K.; Iovchev, K.; Ivanovskaya, I.A.; Kanarek, T.; Kladnitskaya, E.N.; Kopylova, D.K.; Kowalski, M.; Lyubimov, V.B.; Mehtiyev, R. R.; Metreveli, Z.; Nikitina, V.F.; Soloviev, M. I.; Тонеев, В.Д.; Chasnikov, I.Ya.; Izbasarov, M.; Vinitsky, A.Kh.; Abdinov, O.; Backović, S.; Drndarevic, S.; Krmpotic, D.; Krpić, D.; Rak, L.; Simić, Lj.; Balea, E.; Balea, O.; Boldea, V.; Hacman, S.; Ponta, T.; Keloglu, Yu. P.; Hansgen, K.; Erofeeva, I.; Lyutov, S.I.; Mel'nikova, N.N.; Murzin, V. S.; Popova, V.M.; Shcheglova, L.M.; Sivoklokov, S. Yu.; Smirnova, L. N.; Solomin, A.; Toneeva, G.P.; Dolejší, J.; Trka, Z.; Trkova, Ya.; Ismatova, F.A.; Muminov, M.M.; Suvanov, I.; Angelov, N.; Grekova, L.D.; Kerachev, P.P.; Markov, P.K.; Penev, V.N.; Semerdzhiev, H.; Temnikov, P.; Azimov, S.A.; Edgorov, S.O.; Inogamov, Sh.V.; Yuldashev, A. A.; Yuldashev, B. S.; Amaglobeli, N.S.; Dasaeva, M.; Tevzadze, Yu.V.; Baatar, Ts.; Batmunh, D.; Togoo, T.; Tuvdendorzh, D.; Kochnev, N.I.; Prokopieva, S.; Białkowska, H.; Gulkanian, G. P.; Kirakosian, Z.A.; Korchagin, S.A.; Ravinovich, I.

doi:10.1007/bf01556607

Cited by 46 publications

(16 citation statements)

References 27 publications

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“…78]. Combining these experimental findings, one may conclude that the expected deviations for the pion energy Agakishiyev et al [60] distribution shape between pp and the light nuclear interactions that are relevant in astrophysics should not be larger than 30-40 % for collisions with T p ≤ 100 A GeV. Thus, for simplicity I assume here that nucleus-nucleus and nucleon-nucleon collisions with 1 ≤ T p ≤ 100 A GeV have identical pion spectral shape.…”

Section: B Differential Cross Section Dσπ/deπmentioning

confidence: 81%

Parametrization of the nucleus-nucleus γ -ray production cross sections below 100 GeV/nucleon: Subthreshold pions and hard photons

Kafexhiu

2016

Phys. Rev. C

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"Subthreshold pions" and so-called "hard photons" are two important channels for producing less than 1 GeV γ-rays and e ± pairs from nuclear collisions with energy per nucleon below the π-meson production threshold. I use publicly available experimental data to parametrize these two channels' γ-ray and e ± production cross sections and extend the pion contribution to these particles spectra at higher energies using their corresponding spectra from pp interactions. These parametrizations are valid for collision energy Tp ≤ 100 A GeV and agree reasonably well with the available experimental data. The new parametrizations allow, for the first time, accurate studies of astrophysical γ-rays below 1 GeV.

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Section: B Differential Cross Section Dσπ/deπmentioning

confidence: 81%

Parametrization of the nucleus-nucleus γ -ray production cross sections below 100 GeV/nucleon: Subthreshold pions and hard photons

Kafexhiu

2016

Phys. Rev. C

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“…As we have mentioned above that all the experimental data have been compared with ones coming from the Dubna version of the cascade model [22]. The model was described in somewhere else [21,23], based on Monte-Carlo simulation, used to explain the common prospects of nucleus-nucleus and hadron-nucleus collisions at relativistic energies.…”

Section: Cascade Evaporation Model (Cem)mentioning

confidence: 99%

“…The x-distribution of the charged particles with maximum values of the x in an event is also considered. All the experimental data were compared with ones coming from the Dubna version of the cascade model and were fitted using the exponential function y=ax+b (a and b are free parameters of fitting) [22].…”

Section: Introductionmentioning

confidence: 99%

Study of the Cumulative Number Distribution of Charged Particles Produced in p12C-Interactions at 4.2 A GeV/c

et al. 2017

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In this paper the behaviour of the cumulative number distribution and the maximum values of cumulative number in an event of all charged particles (protons,±-mesons) produced in p12C-interctions at 4.2 A GeV/c from experimental and simulation data has been analysed. One could see four different regions in the cumulative number distributions for protons in which the last region has cumulative number greater than one which correspond to cumulative region. Similarly one could see two and three different regions for negative and positive pions respectively but there is totally absence of the cumulative area for negative pions but there are few positive pions in the cumulative area. The simulation data obtained from Cascade code cannot describe satisfactorily the distributions of the cumulative number for protons and positive and negative pions but in case of particles with maximum values of cumulative number cascade code can describe the behaviour of cumulative number distribution well. The inverse of the slope for ε dσ/dp ~f(-x/) behaviour as a function of x has a universal value≅0.16.

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“…The 2-m propane bubble chamber was placed in a magnetic field of strength 1.5 T [22,[30][31][32][33][34][35][36]. Three tantalum 181 Ta foils also were placed in the experimental setup of the chamber.…”

Section: The Experimentsmentioning

confidence: 99%

“…The bubble chamber then was irradiated with beams of 2 H and 12 C nuclei accelerated to a momentum of 4.2 GeV/c per nucleon at the Dubna synchrophasotron. The deuterons and 12 C nuclei were made to interact with the carbon nuclei and protons of the propane molecules and the tantalum 181 Ta foils placed in the propane bubble chamber [22,[34][35][36]. Methods of selection of inelastic d + 12 C, 12 C + 12 C, and 12 C + 181 Ta collision events in this experiment were explained in detail in Refs.…”

Section: The Experimentsmentioning

confidence: 99%

Analysis of rapidity spectra of negative pions ind + 12C,12C +
Olimov
¹
,
Iqbal
²
,
Glagolev
³

et al. 2013
Phys. Rev. C
13
0
0
0
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The experimental rapidity distributions of negative pions were studied in minimum bias d + 12 C, 12 C + 12 C, and 12 C + 181 Ta collisions at 4.2 GeV/c per nucleon with 4π acceptance. The quantitative analysis of centrality dependence of the rapidity as well as transverse momentum versus rapidity spectra of the negative pions in the above collisions was performed by fitting the pion spectra with a Gaussian function. The widths of the rapidity spectra of π − mesons decreased in going from peripheral to central d + 12 C, 12 C + 12 C, and 12 C + 181 Ta collisions. With an increase in collision centrality, the centers of the rapidity distributions of the negative pions shifted towards the target fragmentation region in the case of asymmetric d + 12 C and 12 C + 181 Ta collisions and remained at the midrapidity position for symmetric 12 C + 12 C collisions. The extracted widths and locations of the centers of transverse momentum versus rapidity spectra of the negative pions did not depend within uncertainties on the masses of the projectile and target nuclei as well as the collision centrality. The experimental results were compared systematically with the corresponding results extracted by using a version of the quark-gluon-string model adapted to intermediate energies.

show abstract

Multiplicity, momentum and angular characteristics of π− mesons forpC,dC, αC and CC interactions at 4.2 GeV/c per nucleon

Cited by 46 publications

References 27 publications

Parametrization of the nucleus-nucleus γ -ray production cross sections below 100 GeV/nucleon: Subthreshold pions and hard photons

Parametrization of the nucleus-nucleus γ -ray production cross sections below 100 GeV/nucleon: Subthreshold pions and hard photons

Study of the Cumulative Number Distribution of Charged Particles Produced in p12C-Interactions at 4.2 A GeV/c

Analysis of rapidity spectra of negative pions ind + 12C,12C +
Olimov
¹
,
Iqbal
²
,
Glagolev
³

et al. 2013
Phys. Rev. C
13
0
0
0
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Multiplicity, momentum and angular characteristics of π− mesons forpC,dC, αC and CC interactions at 4.2 GeV/c per nucleon

Cited by 46 publications

References 27 publications

Parametrization of the nucleus-nucleus γ -ray production cross sections below 100 GeV/nucleon: Subthreshold pions and hard photons

Parametrization of the nucleus-nucleus γ -ray production cross sections below 100 GeV/nucleon: Subthreshold pions and hard photons

Study of the Cumulative Number Distribution of Charged Particles Produced in p12C-Interactions at 4.2 A GeV/c

Analysis of rapidity spectra of negative pions ind + 12C,12C + Olimov1, Iqbal2, Glagolev3 et al. 2013Phys. Rev. C13000View full textAdd to dashboardCite

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Analysis of rapidity spectra of negative pions ind + 12C,12C +
Olimov
¹
,
Iqbal
²
,
Glagolev
³

et al. 2013
Phys. Rev. C
13
0
0
0
View full text Add to dashboard Cite