Multiplicity Dependence of Pion Source Size in Heavy Ion Collisions

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HBT interferometry is a well known technique to study the space-time extent of the particle source in heavy ion collisions. The NA44 experiment measures one and two particle spectra of identified pions, kaons and protons around mid-rapidity produced in heavy ion collision at the CERN SPS. We present the relation between charged multiplicity density and the HBT radius parameters in S + Pb collisions at 200 A GeV and Pb + Pb collisions at 158 A GeV. The HBT radius parameter increases as a function of charged multiplicity density in Pb + Pb collisions in a similar way to that found previously in S + Pb collisions. We will discuss what we can learn about the condition at freeze-out using these experimental results.
理論物理学刊行会の論文
1998-03-20

著者

Poulard G
Cern
Willis W.j
Department Of Physics Columbia University
Jacak B.v
Los Alamos National Laboratory
Fields D.e
Los Alamos National Laboratory
Franz A
CERN
Piuz F
CERN
Fabjan C.w
Cern
BEARDEN G
Niels Bohr Institute
BOGGILD H
Niels Bohr Institute
BOISSEVAIN J
Los Alamos National Laboratory
DODD J
Department of Physics, Columbia University
ERAZMUS B
Nuclear Physics Laboratory of Nantes
ESUMI S
Department of Physics, Hiroshima University
FERENC D
Rudjer Boskovic Institute
GAARDHOJE J.J
Niels Bohr Institute
HANSEN A.G
Niels Bohr Institute
HANSEN O
Niels Bohr Institute
HARDTKE D
Department of Physics, Ohio State University
HECKE H.van
Los Alamos National Laboratory
HOLZER E.B
Technical University
HUMANIC T.J
Department of Physics, Ohio State University
HUMMEL P
Technical University
JAYANTI R
Department of Physics, Ohio State University
KANETA M
Department of Physics, Hiroshima University
KOPYTINE M
Los Alamos National Laboratory
LELTCHOUK M
Department of Physics, Columbia University
LJUBICIC JR
Rudjer Boskovic Institute
LORSTAD B
Department of Physics, University of Lund
MAEDA N
Department of Physics, Hiroshima University
MALINA R
Technical University
MEDVEDEV A
Department of Physics, Columbia University
MURRAY M
Texas AEM University, College Station
NISHIMURA S
Department of Physics, Hiroshima University
OHNISHI H
Department of Physics, Hiroshima University
PAIC G
Nuclear Physics Laboratory of Nantes
PANDEY S.U
Department of Physics, Ohio State University
PLUTA J
Nuclear Physics Laboratory of Nantes
POLYCHRONAKOS V
Brookhaven National Laboratory, Upton
POTEKHIN M
Department of Physics, Columbia University
REICHHOLD D
Department of Physics, Ohio State University
SAKAGUCHI A
Department of Physics, Hiroshima University
SIMON-GILLO J
Los Alamos National Laboratory
SCHMIDT-SORENSEN J
Department of Physics, University of Lund
SONDHEIM W
Los Alamos National Laboratory
SPEGEL M
CERN
SUGITATE T
Department of Physics, Hiroshima University
SULLIVAN J.P
Los Alamos National Laboratory
SUMI Y
Department of Physics, Hiroshima University
WOLF K
Texas AEM University, College Station
XU N
Los Alamos National Laboratory
ZACHARY D.S
Department of Physics, Ohio State University
Humanic T.j
Department Of Physics Ohio State University
Sumi Y
Department Of Chemistry St. Marianna University School Of Medicine
Lorstad B
Department Of Physics University Of Lund
Sugitate T
Department Of Physics Hiroshima University
Leltchouk M
Department Of Physics Columbia University
Maeda N
Department Of Bacteriology School Of Dental Medicine Tsurumi University
Schmidt-sorensen J
Department Of Physics University Of Lund
Zachary D.s
Department Of Physics Ohio State University
Jayanti R
Department Of Physics Ohio State University
Hardtke D
Department Of Physics Ohio State University
Pandey S.u
Department Of Physics Ohio State University
Potekhin M
Department Of Physics Columbia University
Reichhold D
Department Of Physics Ohio State University
Polychronakos V
Brookhaven National Laboratory Upton
Nishimura S
Department Of Electrical Engineering And Computer Science Kumamoto University
Kaneta M
Department Of Biochemistry Faculty Of Pharmaceutical Sciences Health Sciences University Of Hokkaido
Dodd J
Department Of Physics Columbia University
Medvedev A
Department Of Physics Columbia University
Murray M
Texas Aem University College Station
Esumi S
Department Of Physics Hiroshima University
Kaneta M
Department Of Physics Hiroshima University
Wolf K
Texas Aem University College Station
WILLIS W.J
Department of Physics, Columbia University

Multiplicity Dependence of Pion Source Size in Heavy Ion Collisions

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