Kaon and proton ratios from central Pb+Pb collisions at the CERN SPS
K −/K + and p ¯ / p ratios measured in 158 A·GeV Pb+Pb collisions are shown as a function of transverse momentum P T and centrality in top 8.5% central region. Little centrality dependence of the K −/ K + and p ¯ / p ratios is observed. The transverse mass m T distribution and dN/dy of K +, K −, p a...
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| Veröffentlicht in: | Nuclear physics. A 1998, Vol.638 (1), p.419c-422c |
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| creator | Kaneta, M. Bearden, I.G. Bøggild, H. Boissevain, J. Dodd, J.R. Erazmus, B. Esumi, S. Fabjan, C.W. Ferenc, D. Fields, D.E. Franz, A. Gaardhøje, J.J. Hamelin, M. Hansen, A.G. Hansen, O. Hardtke, D. van Hecke, H. Holzer, E.B. Humanic, T. Hummel, P. Jacak, B.V. Jayanti, R. Kaimi, K. Kaneta, M. Kopytine, M. Leltchouk, M. Ljubicic, A. Lørstad, B. Maeda, N. Malina, R. Murray, M. Ohnishi, H. Paic, G. Pandey, S.U. Piuz, F. Pluta, J. Polychronakos, V. Potekhin, M. Poulard, G. Reichhold, D. Sakaguchi, A. Schmidt-Sørensen, J. Simon-Gillo, J. Sondheim, W. Spegel, M. Sugitate, T. Sullivan, J.P. Sumi, Y. Willis, W.J. Wolf, K.L. Xu, N. Zachary, D.S. |
| description | K
−/K
+ and
p
¯
/
p
ratios measured in 158 A·GeV Pb+Pb collisions are shown as a function of transverse momentum
P
T
and centrality in top 8.5% central region. Little centrality dependence of the
K
−/
K
+ and
p
¯
/
p
ratios is observed. The transverse mass
m
T
distribution and
dN/dy of
K
+,
K
−,
p and
p
¯
around mid-rapidity are obtained. The temperature
T
ch
and the chemical potentials for both light and strange quarks (μ
q, μ
s) at chemical freeze-out are determined by applying simple thermodynamical model to the present data. The resultant μ
q, μ
s and
T
ch
are compared with those obtained from similar analysis of SPS S+A and AGS Si+A data. The chemical freeze-out temperature
T
ch
at CERN energies is higher than thermal freeze-out temperature
T
fo
which is extracted from
m
T
distribution of charged hadrons. At AGS energies
T
ch
is close to
T
fo
. |
| doi_str_mv | 10.1016/S0375-9474(98)00340-6 |
| format | Article |
| fullrecord | <record><control><sourceid>hal_cross</sourceid><recordid>TN_cdi_hal_primary_oai_HAL_in2p3_00005926v1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0375947498003406</els_id><sourcerecordid>oai_HAL_in2p3_00005926v1</sourcerecordid><originalsourceid>FETCH-LOGICAL-c378t-c118f7febc25e90a59237995009ca55bb30e589d3594f5ed26e734f713d8bcec3</originalsourceid><addsrcrecordid>eNqFkEFLAzEUhIMoWKs_QchRKavJZrPZnKTUasWixeo5ZLMvNLLdlCQU_PduW-nVd5l3mBmYD6FrSu4ooeX9kjDBM1mI4kZWt4SwgmTlCRrQSrCMcl6cosHRco4uYvwm_ZWEDNDjq_Yd1l2DN8Gn_g06OR-xDX6NDXQp6BYv6tGixsa3rYvOdxHrhNMK8GT68YaXi-UlOrO6jXD1p0P09TT9nMyy-fvzy2Q8zwwTVcoMpZUVFmqTc5BEc5kzISUnRBrNeV0zArySDeOysByavATBCisoa6ragGFDNDr0rnSrNsGtdfhRXjs1G8-V6_INU7thfW-5pb2bH9wm-BgD2GOEErUDp_bg1I6KkpXag1Nln3s45KCfsnUQVDQOOgONC2CSarz7p-EXBI9yuA</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Kaon and proton ratios from central Pb+Pb collisions at the CERN SPS</title><source>Elsevier ScienceDirect Journals</source><creator>Kaneta, M. ; Bearden, I.G. ; Bøggild, H. ; Boissevain, J. ; Dodd, J.R. ; Erazmus, B. ; Esumi, S. ; Fabjan, C.W. ; Ferenc, D. ; Fields, D.E. ; Franz, A. ; Gaardhøje, J.J. ; Hamelin, M. ; Hansen, A.G. ; Hansen, O. ; Hardtke, D. ; van Hecke, H. ; Holzer, E.B. ; Humanic, T. ; Hummel, P. ; Jacak, B.V. ; Jayanti, R. ; Kaimi, K. ; Kaneta, M. ; Kopytine, M. ; Leltchouk, M. ; Ljubicic, A. ; Lørstad, B. ; Maeda, N. ; Malina, R. ; Murray, M. ; Ohnishi, H. ; Paic, G. ; Pandey, S.U. ; Piuz, F. ; Pluta, J. ; Polychronakos, V. ; Potekhin, M. ; Poulard, G. ; Reichhold, D. ; Sakaguchi, A. ; Schmidt-Sørensen, J. ; Simon-Gillo, J. ; Sondheim, W. ; Spegel, M. ; Sugitate, T. ; Sullivan, J.P. ; Sumi, Y. ; Willis, W.J. ; Wolf, K.L. ; Xu, N. ; Zachary, D.S.</creator><creatorcontrib>Kaneta, M. ; Bearden, I.G. ; Bøggild, H. ; Boissevain, J. ; Dodd, J.R. ; Erazmus, B. ; Esumi, S. ; Fabjan, C.W. ; Ferenc, D. ; Fields, D.E. ; Franz, A. ; Gaardhøje, J.J. ; Hamelin, M. ; Hansen, A.G. ; Hansen, O. ; Hardtke, D. ; van Hecke, H. ; Holzer, E.B. ; Humanic, T. ; Hummel, P. ; Jacak, B.V. ; Jayanti, R. ; Kaimi, K. ; Kaneta, M. ; Kopytine, M. ; Leltchouk, M. ; Ljubicic, A. ; Lørstad, B. ; Maeda, N. ; Malina, R. ; Murray, M. ; Ohnishi, H. ; Paic, G. ; Pandey, S.U. ; Piuz, F. ; Pluta, J. ; Polychronakos, V. ; Potekhin, M. ; Poulard, G. ; Reichhold, D. ; Sakaguchi, A. ; Schmidt-Sørensen, J. ; Simon-Gillo, J. ; Sondheim, W. ; Spegel, M. ; Sugitate, T. ; Sullivan, J.P. ; Sumi, Y. ; Willis, W.J. ; Wolf, K.L. ; Xu, N. ; Zachary, D.S. ; NA44 Collaboration</creatorcontrib><description>K
−/K
+ and
p
¯
/
p
ratios measured in 158 A·GeV Pb+Pb collisions are shown as a function of transverse momentum
P
T
and centrality in top 8.5% central region. Little centrality dependence of the
K
−/
K
+ and
p
¯
/
p
ratios is observed. The transverse mass
m
T
distribution and
dN/dy of
K
+,
K
−,
p and
p
¯
around mid-rapidity are obtained. The temperature
T
ch
and the chemical potentials for both light and strange quarks (μ
q, μ
s) at chemical freeze-out are determined by applying simple thermodynamical model to the present data. The resultant μ
q, μ
s and
T
ch
are compared with those obtained from similar analysis of SPS S+A and AGS Si+A data. The chemical freeze-out temperature
T
ch
at CERN energies is higher than thermal freeze-out temperature
T
fo
which is extracted from
m
T
distribution of charged hadrons. At AGS energies
T
ch
is close to
T
fo
.</description><identifier>ISSN: 0375-9474</identifier><identifier>EISSN: 1873-1554</identifier><identifier>DOI: 10.1016/S0375-9474(98)00340-6</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>High Energy Physics - Phenomenology ; Physics</subject><ispartof>Nuclear physics. A, 1998, Vol.638 (1), p.419c-422c</ispartof><rights>1998 Elsevier Science B.V. and Yamada Science Foundation. All rights reserved</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c378t-c118f7febc25e90a59237995009ca55bb30e589d3594f5ed26e734f713d8bcec3</citedby><cites>FETCH-LOGICAL-c378t-c118f7febc25e90a59237995009ca55bb30e589d3594f5ed26e734f713d8bcec3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0375947498003406$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,776,780,881,3537,4010,27900,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://in2p3.hal.science/in2p3-00005926$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Kaneta, M.</creatorcontrib><creatorcontrib>Bearden, I.G.</creatorcontrib><creatorcontrib>Bøggild, H.</creatorcontrib><creatorcontrib>Boissevain, J.</creatorcontrib><creatorcontrib>Dodd, J.R.</creatorcontrib><creatorcontrib>Erazmus, B.</creatorcontrib><creatorcontrib>Esumi, S.</creatorcontrib><creatorcontrib>Fabjan, C.W.</creatorcontrib><creatorcontrib>Ferenc, D.</creatorcontrib><creatorcontrib>Fields, D.E.</creatorcontrib><creatorcontrib>Franz, A.</creatorcontrib><creatorcontrib>Gaardhøje, J.J.</creatorcontrib><creatorcontrib>Hamelin, M.</creatorcontrib><creatorcontrib>Hansen, A.G.</creatorcontrib><creatorcontrib>Hansen, O.</creatorcontrib><creatorcontrib>Hardtke, D.</creatorcontrib><creatorcontrib>van Hecke, H.</creatorcontrib><creatorcontrib>Holzer, E.B.</creatorcontrib><creatorcontrib>Humanic, T.</creatorcontrib><creatorcontrib>Hummel, P.</creatorcontrib><creatorcontrib>Jacak, B.V.</creatorcontrib><creatorcontrib>Jayanti, R.</creatorcontrib><creatorcontrib>Kaimi, K.</creatorcontrib><creatorcontrib>Kaneta, M.</creatorcontrib><creatorcontrib>Kopytine, M.</creatorcontrib><creatorcontrib>Leltchouk, M.</creatorcontrib><creatorcontrib>Ljubicic, A.</creatorcontrib><creatorcontrib>Lørstad, B.</creatorcontrib><creatorcontrib>Maeda, N.</creatorcontrib><creatorcontrib>Malina, R.</creatorcontrib><creatorcontrib>Murray, M.</creatorcontrib><creatorcontrib>Ohnishi, H.</creatorcontrib><creatorcontrib>Paic, G.</creatorcontrib><creatorcontrib>Pandey, S.U.</creatorcontrib><creatorcontrib>Piuz, F.</creatorcontrib><creatorcontrib>Pluta, J.</creatorcontrib><creatorcontrib>Polychronakos, V.</creatorcontrib><creatorcontrib>Potekhin, M.</creatorcontrib><creatorcontrib>Poulard, G.</creatorcontrib><creatorcontrib>Reichhold, D.</creatorcontrib><creatorcontrib>Sakaguchi, A.</creatorcontrib><creatorcontrib>Schmidt-Sørensen, J.</creatorcontrib><creatorcontrib>Simon-Gillo, J.</creatorcontrib><creatorcontrib>Sondheim, W.</creatorcontrib><creatorcontrib>Spegel, M.</creatorcontrib><creatorcontrib>Sugitate, T.</creatorcontrib><creatorcontrib>Sullivan, J.P.</creatorcontrib><creatorcontrib>Sumi, Y.</creatorcontrib><creatorcontrib>Willis, W.J.</creatorcontrib><creatorcontrib>Wolf, K.L.</creatorcontrib><creatorcontrib>Xu, N.</creatorcontrib><creatorcontrib>Zachary, D.S.</creatorcontrib><creatorcontrib>NA44 Collaboration</creatorcontrib><title>Kaon and proton ratios from central Pb+Pb collisions at the CERN SPS</title><title>Nuclear physics. A</title><description>K
−/K
+ and
p
¯
/
p
ratios measured in 158 A·GeV Pb+Pb collisions are shown as a function of transverse momentum
P
T
and centrality in top 8.5% central region. Little centrality dependence of the
K
−/
K
+ and
p
¯
/
p
ratios is observed. The transverse mass
m
T
distribution and
dN/dy of
K
+,
K
−,
p and
p
¯
around mid-rapidity are obtained. The temperature
T
ch
and the chemical potentials for both light and strange quarks (μ
q, μ
s) at chemical freeze-out are determined by applying simple thermodynamical model to the present data. The resultant μ
q, μ
s and
T
ch
are compared with those obtained from similar analysis of SPS S+A and AGS Si+A data. The chemical freeze-out temperature
T
ch
at CERN energies is higher than thermal freeze-out temperature
T
fo
which is extracted from
m
T
distribution of charged hadrons. At AGS energies
T
ch
is close to
T
fo
.</description><subject>High Energy Physics - Phenomenology</subject><subject>Physics</subject><issn>0375-9474</issn><issn>1873-1554</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNqFkEFLAzEUhIMoWKs_QchRKavJZrPZnKTUasWixeo5ZLMvNLLdlCQU_PduW-nVd5l3mBmYD6FrSu4ooeX9kjDBM1mI4kZWt4SwgmTlCRrQSrCMcl6cosHRco4uYvwm_ZWEDNDjq_Yd1l2DN8Gn_g06OR-xDX6NDXQp6BYv6tGixsa3rYvOdxHrhNMK8GT68YaXi-UlOrO6jXD1p0P09TT9nMyy-fvzy2Q8zwwTVcoMpZUVFmqTc5BEc5kzISUnRBrNeV0zArySDeOysByavATBCisoa6ragGFDNDr0rnSrNsGtdfhRXjs1G8-V6_INU7thfW-5pb2bH9wm-BgD2GOEErUDp_bg1I6KkpXag1Nln3s45KCfsnUQVDQOOgONC2CSarz7p-EXBI9yuA</recordid><startdate>1998</startdate><enddate>1998</enddate><creator>Kaneta, M.</creator><creator>Bearden, I.G.</creator><creator>Bøggild, H.</creator><creator>Boissevain, J.</creator><creator>Dodd, J.R.</creator><creator>Erazmus, B.</creator><creator>Esumi, S.</creator><creator>Fabjan, C.W.</creator><creator>Ferenc, D.</creator><creator>Fields, D.E.</creator><creator>Franz, A.</creator><creator>Gaardhøje, J.J.</creator><creator>Hamelin, M.</creator><creator>Hansen, A.G.</creator><creator>Hansen, O.</creator><creator>Hardtke, D.</creator><creator>van Hecke, H.</creator><creator>Holzer, E.B.</creator><creator>Humanic, T.</creator><creator>Hummel, P.</creator><creator>Jacak, B.V.</creator><creator>Jayanti, R.</creator><creator>Kaimi, K.</creator><creator>Kaneta, M.</creator><creator>Kopytine, M.</creator><creator>Leltchouk, M.</creator><creator>Ljubicic, A.</creator><creator>Lørstad, B.</creator><creator>Maeda, N.</creator><creator>Malina, R.</creator><creator>Murray, M.</creator><creator>Ohnishi, H.</creator><creator>Paic, G.</creator><creator>Pandey, S.U.</creator><creator>Piuz, F.</creator><creator>Pluta, J.</creator><creator>Polychronakos, V.</creator><creator>Potekhin, M.</creator><creator>Poulard, G.</creator><creator>Reichhold, D.</creator><creator>Sakaguchi, A.</creator><creator>Schmidt-Sørensen, J.</creator><creator>Simon-Gillo, J.</creator><creator>Sondheim, W.</creator><creator>Spegel, M.</creator><creator>Sugitate, T.</creator><creator>Sullivan, J.P.</creator><creator>Sumi, Y.</creator><creator>Willis, W.J.</creator><creator>Wolf, K.L.</creator><creator>Xu, N.</creator><creator>Zachary, D.S.</creator><general>Elsevier B.V</general><general>North-Holland ; Elsevier [1967-....]</general><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope></search><sort><creationdate>1998</creationdate><title>Kaon and proton ratios from central Pb+Pb collisions at the CERN SPS</title><author>Kaneta, M. ; Bearden, I.G. ; Bøggild, H. ; Boissevain, J. ; Dodd, J.R. ; Erazmus, B. ; Esumi, S. ; Fabjan, C.W. ; Ferenc, D. ; Fields, D.E. ; Franz, A. ; Gaardhøje, J.J. ; Hamelin, M. ; Hansen, A.G. ; Hansen, O. ; Hardtke, D. ; van Hecke, H. ; Holzer, E.B. ; Humanic, T. ; Hummel, P. ; Jacak, B.V. ; Jayanti, R. ; Kaimi, K. ; Kaneta, M. ; Kopytine, M. ; Leltchouk, M. ; Ljubicic, A. ; Lørstad, B. ; Maeda, N. ; Malina, R. ; Murray, M. ; Ohnishi, H. ; Paic, G. ; Pandey, S.U. ; Piuz, F. ; Pluta, J. ; Polychronakos, V. ; Potekhin, M. ; Poulard, G. ; Reichhold, D. ; Sakaguchi, A. ; Schmidt-Sørensen, J. ; Simon-Gillo, J. ; Sondheim, W. ; Spegel, M. ; Sugitate, T. ; Sullivan, J.P. ; Sumi, Y. ; Willis, W.J. ; Wolf, K.L. ; Xu, N. ; Zachary, D.S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c378t-c118f7febc25e90a59237995009ca55bb30e589d3594f5ed26e734f713d8bcec3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>High Energy Physics - Phenomenology</topic><topic>Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kaneta, M.</creatorcontrib><creatorcontrib>Bearden, I.G.</creatorcontrib><creatorcontrib>Bøggild, H.</creatorcontrib><creatorcontrib>Boissevain, J.</creatorcontrib><creatorcontrib>Dodd, J.R.</creatorcontrib><creatorcontrib>Erazmus, B.</creatorcontrib><creatorcontrib>Esumi, S.</creatorcontrib><creatorcontrib>Fabjan, C.W.</creatorcontrib><creatorcontrib>Ferenc, D.</creatorcontrib><creatorcontrib>Fields, D.E.</creatorcontrib><creatorcontrib>Franz, A.</creatorcontrib><creatorcontrib>Gaardhøje, J.J.</creatorcontrib><creatorcontrib>Hamelin, M.</creatorcontrib><creatorcontrib>Hansen, A.G.</creatorcontrib><creatorcontrib>Hansen, O.</creatorcontrib><creatorcontrib>Hardtke, D.</creatorcontrib><creatorcontrib>van Hecke, H.</creatorcontrib><creatorcontrib>Holzer, E.B.</creatorcontrib><creatorcontrib>Humanic, T.</creatorcontrib><creatorcontrib>Hummel, P.</creatorcontrib><creatorcontrib>Jacak, B.V.</creatorcontrib><creatorcontrib>Jayanti, R.</creatorcontrib><creatorcontrib>Kaimi, K.</creatorcontrib><creatorcontrib>Kaneta, M.</creatorcontrib><creatorcontrib>Kopytine, M.</creatorcontrib><creatorcontrib>Leltchouk, M.</creatorcontrib><creatorcontrib>Ljubicic, A.</creatorcontrib><creatorcontrib>Lørstad, B.</creatorcontrib><creatorcontrib>Maeda, N.</creatorcontrib><creatorcontrib>Malina, R.</creatorcontrib><creatorcontrib>Murray, M.</creatorcontrib><creatorcontrib>Ohnishi, H.</creatorcontrib><creatorcontrib>Paic, G.</creatorcontrib><creatorcontrib>Pandey, S.U.</creatorcontrib><creatorcontrib>Piuz, F.</creatorcontrib><creatorcontrib>Pluta, J.</creatorcontrib><creatorcontrib>Polychronakos, V.</creatorcontrib><creatorcontrib>Potekhin, M.</creatorcontrib><creatorcontrib>Poulard, G.</creatorcontrib><creatorcontrib>Reichhold, D.</creatorcontrib><creatorcontrib>Sakaguchi, A.</creatorcontrib><creatorcontrib>Schmidt-Sørensen, J.</creatorcontrib><creatorcontrib>Simon-Gillo, J.</creatorcontrib><creatorcontrib>Sondheim, W.</creatorcontrib><creatorcontrib>Spegel, M.</creatorcontrib><creatorcontrib>Sugitate, T.</creatorcontrib><creatorcontrib>Sullivan, J.P.</creatorcontrib><creatorcontrib>Sumi, Y.</creatorcontrib><creatorcontrib>Willis, W.J.</creatorcontrib><creatorcontrib>Wolf, K.L.</creatorcontrib><creatorcontrib>Xu, N.</creatorcontrib><creatorcontrib>Zachary, D.S.</creatorcontrib><creatorcontrib>NA44 Collaboration</creatorcontrib><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Nuclear physics. A</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kaneta, M.</au><au>Bearden, I.G.</au><au>Bøggild, H.</au><au>Boissevain, J.</au><au>Dodd, J.R.</au><au>Erazmus, B.</au><au>Esumi, S.</au><au>Fabjan, C.W.</au><au>Ferenc, D.</au><au>Fields, D.E.</au><au>Franz, A.</au><au>Gaardhøje, J.J.</au><au>Hamelin, M.</au><au>Hansen, A.G.</au><au>Hansen, O.</au><au>Hardtke, D.</au><au>van Hecke, H.</au><au>Holzer, E.B.</au><au>Humanic, T.</au><au>Hummel, P.</au><au>Jacak, B.V.</au><au>Jayanti, R.</au><au>Kaimi, K.</au><au>Kaneta, M.</au><au>Kopytine, M.</au><au>Leltchouk, M.</au><au>Ljubicic, A.</au><au>Lørstad, B.</au><au>Maeda, N.</au><au>Malina, R.</au><au>Murray, M.</au><au>Ohnishi, H.</au><au>Paic, G.</au><au>Pandey, S.U.</au><au>Piuz, F.</au><au>Pluta, J.</au><au>Polychronakos, V.</au><au>Potekhin, M.</au><au>Poulard, G.</au><au>Reichhold, D.</au><au>Sakaguchi, A.</au><au>Schmidt-Sørensen, J.</au><au>Simon-Gillo, J.</au><au>Sondheim, W.</au><au>Spegel, M.</au><au>Sugitate, T.</au><au>Sullivan, J.P.</au><au>Sumi, Y.</au><au>Willis, W.J.</au><au>Wolf, K.L.</au><au>Xu, N.</au><au>Zachary, D.S.</au><aucorp>NA44 Collaboration</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Kaon and proton ratios from central Pb+Pb collisions at the CERN SPS</atitle><jtitle>Nuclear physics. A</jtitle><date>1998</date><risdate>1998</risdate><volume>638</volume><issue>1</issue><spage>419c</spage><epage>422c</epage><pages>419c-422c</pages><issn>0375-9474</issn><eissn>1873-1554</eissn><abstract>K
−/K
+ and
p
¯
/
p
ratios measured in 158 A·GeV Pb+Pb collisions are shown as a function of transverse momentum
P
T
and centrality in top 8.5% central region. Little centrality dependence of the
K
−/
K
+ and
p
¯
/
p
ratios is observed. The transverse mass
m
T
distribution and
dN/dy of
K
+,
K
−,
p and
p
¯
around mid-rapidity are obtained. The temperature
T
ch
and the chemical potentials for both light and strange quarks (μ
q, μ
s) at chemical freeze-out are determined by applying simple thermodynamical model to the present data. The resultant μ
q, μ
s and
T
ch
are compared with those obtained from similar analysis of SPS S+A and AGS Si+A data. The chemical freeze-out temperature
T
ch
at CERN energies is higher than thermal freeze-out temperature
T
fo
which is extracted from
m
T
distribution of charged hadrons. At AGS energies
T
ch
is close to
T
fo
.</abstract><pub>Elsevier B.V</pub><doi>10.1016/S0375-9474(98)00340-6</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0375-9474 |
| ispartof | Nuclear physics. A, 1998, Vol.638 (1), p.419c-422c |
| issn | 0375-9474 1873-1554 |
| language | eng |
| recordid | cdi_hal_primary_oai_HAL_in2p3_00005926v1 |
| source | Elsevier ScienceDirect Journals |
| subjects | High Energy Physics - Phenomenology Physics |
| title | Kaon and proton ratios from central Pb+Pb collisions at the CERN SPS |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-12T08%3A15%3A03IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-hal_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Kaon%20and%20proton%20ratios%20from%20central%20Pb+Pb%20collisions%20at%20the%20CERN%20SPS&rft.jtitle=Nuclear%20physics.%20A&rft.au=Kaneta,%20M.&rft.aucorp=NA44%20Collaboration&rft.date=1998&rft.volume=638&rft.issue=1&rft.spage=419c&rft.epage=422c&rft.pages=419c-422c&rft.issn=0375-9474&rft.eissn=1873-1554&rft_id=info:doi/10.1016/S0375-9474(98)00340-6&rft_dat=%3Chal_cross%3Eoai_HAL_in2p3_00005926v1%3C/hal_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rft_els_id=S0375947498003406&rfr_iscdi=true |