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Estimation of hydrodynamical model parameters from the invariant spectrum and the Bose-Einstein correlations of $\pi$-mesons produced in ($\pi^{+}/K^{+})p$ interactions at 250 GeV/c

The invariant spectra of pi- mesons produced in (pi+/K+)p interactions at 250 GeV/c are analysed in the framework of the hydrodynamical model of three-dimensionally expanding cylindrically symmetric finite systems. A satisfactory description of experimental data is achieved. The data favour the patt...

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Autores principales: Agababyan, N.M., Atayan, M.R., Csörgő, T., De Wolf, E.A., Dziunikowska, K., Endler, A.M.F., Garutchava, Z.Sh., Gulkanyan, H.R., Hakobyan, R.Sh., Karamyan, J.K., Kisielewska, D., Kittel, W., Mehrabyan, S.S., Metreveli, Z.V., Olkiewicz, K., Rizatdinova, F.K., Shabalina, E.K., Smirnova, L.N., Tabidze, M.D., Tikhonova, L.A., Tkabladze, A.V., Tomaradze, A.G., Verbeure, F., Zotkin, S.A.
Lenguaje:eng
Publicado: 1997
Materias:
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(98)00072-0
http://cds.cern.ch/record/338851
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author Agababyan, N.M.
Atayan, M.R.
Csörgő, T.
De Wolf, E.A.
Dziunikowska, K.
Endler, A.M.F.
Garutchava, Z.Sh.
Gulkanyan, H.R.
Hakobyan, R.Sh.
Karamyan, J.K.
Kisielewska, D.
Kittel, W.
Mehrabyan, S.S.
Metreveli, Z.V.
Olkiewicz, K.
Rizatdinova, F.K.
Shabalina, E.K.
Smirnova, L.N.
Tabidze, M.D.
Tikhonova, L.A.
Tkabladze, A.V.
Tomaradze, A.G.
Verbeure, F.
Zotkin, S.A.
author_facet Agababyan, N.M.
Atayan, M.R.
Csörgő, T.
De Wolf, E.A.
Dziunikowska, K.
Endler, A.M.F.
Garutchava, Z.Sh.
Gulkanyan, H.R.
Hakobyan, R.Sh.
Karamyan, J.K.
Kisielewska, D.
Kittel, W.
Mehrabyan, S.S.
Metreveli, Z.V.
Olkiewicz, K.
Rizatdinova, F.K.
Shabalina, E.K.
Smirnova, L.N.
Tabidze, M.D.
Tikhonova, L.A.
Tkabladze, A.V.
Tomaradze, A.G.
Verbeure, F.
Zotkin, S.A.
author_sort Agababyan, N.M.
collection CERN
description The invariant spectra of pi- mesons produced in (pi+/K+)p interactions at 250 GeV/c are analysed in the framework of the hydrodynamical model of three-dimensionally expanding cylindrically symmetric finite systems. A satisfactory description of experimental data is achieved. The data favour the pattern according to which the hadron matter undergoes predominantly longitudinal expansion and non-relativistic transverse expansion with mean transverse velocity <u_t> = 0.20(7), and is characterized by a large temperature inhomogeneity in the transverse direction: the extracted freeze-out temperature at the center of the tube and at the transverse rms radius are 140(3) MeV and 82(7) MeV, respectively. The width of the (longitudinal) space-time rapidity distribution of the pion source is found to be Delta eta = 1.36(2). Combining this estimate with results of the Bose-Einstein correlation analysis in the same experiment, one extracts a mean freeze-out time of the source of <tau_f> = 1.4(1) fm/c and its transverse geometrical rms radius, R_G (rms)=1.2(2) fm.
id cern-338851
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
record_format invenio
spelling cern-3388512023-03-14T19:57:24Zdoi:10.1016/S0370-2693(98)00072-0http://cds.cern.ch/record/338851engAgababyan, N.M.Atayan, M.R.Csörgő, T.De Wolf, E.A.Dziunikowska, K.Endler, A.M.F.Garutchava, Z.Sh.Gulkanyan, H.R.Hakobyan, R.Sh.Karamyan, J.K.Kisielewska, D.Kittel, W.Mehrabyan, S.S.Metreveli, Z.V.Olkiewicz, K.Rizatdinova, F.K.Shabalina, E.K.Smirnova, L.N.Tabidze, M.D.Tikhonova, L.A.Tkabladze, A.V.Tomaradze, A.G.Verbeure, F.Zotkin, S.A.Estimation of hydrodynamical model parameters from the invariant spectrum and the Bose-Einstein correlations of $\pi$-mesons produced in ($\pi^{+}/K^{+})p$ interactions at 250 GeV/cParticle Physics - ExperimentThe invariant spectra of pi- mesons produced in (pi+/K+)p interactions at 250 GeV/c are analysed in the framework of the hydrodynamical model of three-dimensionally expanding cylindrically symmetric finite systems. A satisfactory description of experimental data is achieved. The data favour the pattern according to which the hadron matter undergoes predominantly longitudinal expansion and non-relativistic transverse expansion with mean transverse velocity <u_t> = 0.20(7), and is characterized by a large temperature inhomogeneity in the transverse direction: the extracted freeze-out temperature at the center of the tube and at the transverse rms radius are 140(3) MeV and 82(7) MeV, respectively. The width of the (longitudinal) space-time rapidity distribution of the pion source is found to be Delta eta = 1.36(2). Combining this estimate with results of the Bose-Einstein correlation analysis in the same experiment, one extracts a mean freeze-out time of the source of <tau_f> = 1.4(1) fm/c and its transverse geometrical rms radius, R_G (rms)=1.2(2) fm.The invariant spectra of pi- mesons produced in (pi+/K+)p interactions at 250 GeV/c are analysed in the framework of the hydrodynamical model of three-dimensionally expanding cylindrically symmetric finite systems. A satisfactory description of experimental data is achieved. The data favour the pattern according to which the hadron matter undergoes predominantly longitudinal expansion and non-relativistic transverse expansion with mean transverse velocity <u_t> = 0.20(7), and is characterized by a large temperature inhomogeneity in the transverse direction: the extracted freeze-out temperature at the center of the tube and at the transverse rms radius are 140(3) MeV and 82(7) MeV, respectively. The width of the (longitudinal) space-time rapidity distribution of the pion source is found to be Delta eta = 1.36(2). Combining this estimate with results of the Bose-Einstein correlation analysis in the same experiment, one extracts a mean freeze-out time of the source of <tau_f> = 1.4(1) fm/c and its transverse geometrical rms radius, R_G (rms)=1.2(2) fm.hep-ex/9711009HEN-405HEN-405oai:cds.cern.ch:3388511997-11-19
spellingShingle Particle Physics - Experiment
Agababyan, N.M.
Atayan, M.R.
Csörgő, T.
De Wolf, E.A.
Dziunikowska, K.
Endler, A.M.F.
Garutchava, Z.Sh.
Gulkanyan, H.R.
Hakobyan, R.Sh.
Karamyan, J.K.
Kisielewska, D.
Kittel, W.
Mehrabyan, S.S.
Metreveli, Z.V.
Olkiewicz, K.
Rizatdinova, F.K.
Shabalina, E.K.
Smirnova, L.N.
Tabidze, M.D.
Tikhonova, L.A.
Tkabladze, A.V.
Tomaradze, A.G.
Verbeure, F.
Zotkin, S.A.
Estimation of hydrodynamical model parameters from the invariant spectrum and the Bose-Einstein correlations of $\pi$-mesons produced in ($\pi^{+}/K^{+})p$ interactions at 250 GeV/c
title Estimation of hydrodynamical model parameters from the invariant spectrum and the Bose-Einstein correlations of $\pi$-mesons produced in ($\pi^{+}/K^{+})p$ interactions at 250 GeV/c
title_full Estimation of hydrodynamical model parameters from the invariant spectrum and the Bose-Einstein correlations of $\pi$-mesons produced in ($\pi^{+}/K^{+})p$ interactions at 250 GeV/c
title_fullStr Estimation of hydrodynamical model parameters from the invariant spectrum and the Bose-Einstein correlations of $\pi$-mesons produced in ($\pi^{+}/K^{+})p$ interactions at 250 GeV/c
title_full_unstemmed Estimation of hydrodynamical model parameters from the invariant spectrum and the Bose-Einstein correlations of $\pi$-mesons produced in ($\pi^{+}/K^{+})p$ interactions at 250 GeV/c
title_short Estimation of hydrodynamical model parameters from the invariant spectrum and the Bose-Einstein correlations of $\pi$-mesons produced in ($\pi^{+}/K^{+})p$ interactions at 250 GeV/c
title_sort estimation of hydrodynamical model parameters from the invariant spectrum and the bose-einstein correlations of $\pi$-mesons produced in ($\pi^{+}/k^{+})p$ interactions at 250 gev/c
topic Particle Physics - Experiment
url https://dx.doi.org/10.1016/S0370-2693(98)00072-0
http://cds.cern.ch/record/338851
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