Space-time evolution of the hadronic source in peripheral to central Pb + Pb collisions

Two-particle correlations of negative pions as a function of charged particle multiplicity are studied in Pb+Pb collisions at square root s=17.3 GeV per nucleon using the NA44 experiment at the CERN Super Proton Synchrotron (SPS). We find that the source size parameters increase with the charged par...

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Detalles Bibliográficos
Autores principales: Bearden, I G, Bøggild, H, Boissevain, J G, Christiansen, P H L, Conin, L, Dodd, J, Erazmus, B, Esumi, S C, Fabjan, Christian Wolfgang, Ferenc, D, Franz, A, Gaardhøje, J J, Hansen, A G, Hansen, O, Hardtke, D, van Hecke, H, Holzer, E B, Humanic, T J, Hummel, P, Jacak, B V, Kaimi, K, Kaneta, M, Kohama, T, Kopytine, M L, Leltchouk, M, Ljubicic, A, Lörstad, B, Maeda, N, Martin, L, Medvedev, A, Murray, M, Ohnishi, H, Paic, G, Pandey, S U, Piuz, François, Pluta, J, Polychronakos, V, Potekhin, M V, Poulard, G, Reichhold, D M, Sakaguchi, A, Schmidt-Sørensen, J, Simon-Gillo, J, Sondheim, W E, Sugitate, T, Sullivan, J P, Sumi, Y, Willis, W J, Wolf, K, Xu, N, Zachary, D S
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1007/s100520000543
http://cds.cern.ch/record/516170
_version_ 1780897625109692416
author Bearden, I G
Bøggild, H
Boissevain, J G
Christiansen, P H L
Conin, L
Dodd, J
Erazmus, B
Esumi, S C
Fabjan, Christian Wolfgang
Ferenc, D
Franz, A
Gaardhøje, J J
Hansen, A G
Hansen, O
Hardtke, D
van Hecke, H
Holzer, E B
Humanic, T J
Hummel, P
Jacak, B V
Kaimi, K
Kaneta, M
Kohama, T
Kopytine, M L
Leltchouk, M
Ljubicic, A
Lörstad, B
Maeda, N
Martin, L
Medvedev, A
Murray, M
Ohnishi, H
Paic, G
Pandey, S U
Piuz, François
Pluta, J
Polychronakos, V
Potekhin, M V
Poulard, G
Reichhold, D M
Sakaguchi, A
Schmidt-Sørensen, J
Simon-Gillo, J
Sondheim, W E
Sugitate, T
Sullivan, J P
Sumi, Y
Willis, W J
Wolf, K
Xu, N
Zachary, D S
author_facet Bearden, I G
Bøggild, H
Boissevain, J G
Christiansen, P H L
Conin, L
Dodd, J
Erazmus, B
Esumi, S C
Fabjan, Christian Wolfgang
Ferenc, D
Franz, A
Gaardhøje, J J
Hansen, A G
Hansen, O
Hardtke, D
van Hecke, H
Holzer, E B
Humanic, T J
Hummel, P
Jacak, B V
Kaimi, K
Kaneta, M
Kohama, T
Kopytine, M L
Leltchouk, M
Ljubicic, A
Lörstad, B
Maeda, N
Martin, L
Medvedev, A
Murray, M
Ohnishi, H
Paic, G
Pandey, S U
Piuz, François
Pluta, J
Polychronakos, V
Potekhin, M V
Poulard, G
Reichhold, D M
Sakaguchi, A
Schmidt-Sørensen, J
Simon-Gillo, J
Sondheim, W E
Sugitate, T
Sullivan, J P
Sumi, Y
Willis, W J
Wolf, K
Xu, N
Zachary, D S
author_sort Bearden, I G
collection CERN
description Two-particle correlations of negative pions as a function of charged particle multiplicity are studied in Pb+Pb collisions at square root s=17.3 GeV per nucleon using the NA44 experiment at the CERN Super Proton Synchrotron (SPS). We find that the source size parameters increase with the charged particle multiplicity. However the slope of the source size parameters plotted as a function of charged multiplicity is slightly larger at high multiplicity than at low multiplicity. The value of lambda is independent of charged multiplicity. For Pb+Pb collisions, R/sub L/ is larger than R/sub TS/ and R/sub TO/ for all multiplicity intervals, whereas these three radius parameters were approximately equal in S+Nucleus collisions. The ratios (R/sub L//R/sub TS/) and (R/sub L//R/sub TO/) for Pb+Pb data show almost no dependence on charged multiplicity. The duration of pion emission Delta T is constant at 3.8+or-1.1 fm/c as a function of the charged multiplicity in Pb+Pb collisions. The effective volume (V) is also calculated as V= pi *R/sub TS//sup 2/*R/sub L/, assuming a cylindrically shaped source. We found, within the limited statistics, the effective volume rapidly increases at high multiplicity. (23 refs).
id cern-516170
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
record_format invenio
spelling cern-5161702019-09-30T06:29:59Zdoi:10.1007/s100520000543http://cds.cern.ch/record/516170engBearden, I GBøggild, HBoissevain, J GChristiansen, P H LConin, LDodd, JErazmus, BEsumi, S CFabjan, Christian WolfgangFerenc, DFranz, AGaardhøje, J JHansen, A GHansen, OHardtke, Dvan Hecke, HHolzer, E BHumanic, T JHummel, PJacak, B VKaimi, KKaneta, MKohama, TKopytine, M LLeltchouk, MLjubicic, ALörstad, BMaeda, NMartin, LMedvedev, AMurray, MOhnishi, HPaic, GPandey, S UPiuz, FrançoisPluta, JPolychronakos, VPotekhin, M VPoulard, GReichhold, D MSakaguchi, ASchmidt-Sørensen, JSimon-Gillo, JSondheim, W ESugitate, TSullivan, J PSumi, YWillis, W JWolf, KXu, NZachary, D SSpace-time evolution of the hadronic source in peripheral to central Pb + Pb collisionsParticle Physics - ExperimentTwo-particle correlations of negative pions as a function of charged particle multiplicity are studied in Pb+Pb collisions at square root s=17.3 GeV per nucleon using the NA44 experiment at the CERN Super Proton Synchrotron (SPS). We find that the source size parameters increase with the charged particle multiplicity. However the slope of the source size parameters plotted as a function of charged multiplicity is slightly larger at high multiplicity than at low multiplicity. The value of lambda is independent of charged multiplicity. For Pb+Pb collisions, R/sub L/ is larger than R/sub TS/ and R/sub TO/ for all multiplicity intervals, whereas these three radius parameters were approximately equal in S+Nucleus collisions. The ratios (R/sub L//R/sub TS/) and (R/sub L//R/sub TO/) for Pb+Pb data show almost no dependence on charged multiplicity. The duration of pion emission Delta T is constant at 3.8+or-1.1 fm/c as a function of the charged multiplicity in Pb+Pb collisions. The effective volume (V) is also calculated as V= pi *R/sub TS//sup 2/*R/sub L/, assuming a cylindrically shaped source. We found, within the limited statistics, the effective volume rapidly increases at high multiplicity. (23 refs).oai:cds.cern.ch:5161702000
spellingShingle Particle Physics - Experiment
Bearden, I G
Bøggild, H
Boissevain, J G
Christiansen, P H L
Conin, L
Dodd, J
Erazmus, B
Esumi, S C
Fabjan, Christian Wolfgang
Ferenc, D
Franz, A
Gaardhøje, J J
Hansen, A G
Hansen, O
Hardtke, D
van Hecke, H
Holzer, E B
Humanic, T J
Hummel, P
Jacak, B V
Kaimi, K
Kaneta, M
Kohama, T
Kopytine, M L
Leltchouk, M
Ljubicic, A
Lörstad, B
Maeda, N
Martin, L
Medvedev, A
Murray, M
Ohnishi, H
Paic, G
Pandey, S U
Piuz, François
Pluta, J
Polychronakos, V
Potekhin, M V
Poulard, G
Reichhold, D M
Sakaguchi, A
Schmidt-Sørensen, J
Simon-Gillo, J
Sondheim, W E
Sugitate, T
Sullivan, J P
Sumi, Y
Willis, W J
Wolf, K
Xu, N
Zachary, D S
Space-time evolution of the hadronic source in peripheral to central Pb + Pb collisions
title Space-time evolution of the hadronic source in peripheral to central Pb + Pb collisions
title_full Space-time evolution of the hadronic source in peripheral to central Pb + Pb collisions
title_fullStr Space-time evolution of the hadronic source in peripheral to central Pb + Pb collisions
title_full_unstemmed Space-time evolution of the hadronic source in peripheral to central Pb + Pb collisions
title_short Space-time evolution of the hadronic source in peripheral to central Pb + Pb collisions
title_sort space-time evolution of the hadronic source in peripheral to central pb + pb collisions
topic Particle Physics - Experiment
url https://dx.doi.org/10.1007/s100520000543
http://cds.cern.ch/record/516170
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