Enhanced production of low-mass electron pairs in 200 GeV/nucleon S-Au collisions at the CERN super proton synchrotron
We report on measurements of low-mass electron pairs in 450 GeV {ital p}-Be, {ital p}-Au, and 200 GeV/nucleon S-Au collisions at central rapidities. For the proton induced interactions, the low-mass spectra are, within the systematic errors, satisfactorily explained by electron pairs from hadron dec...
Gespeichert in:
| Veröffentlicht in: | Physical Review Letters 1995-08, Vol.75 (7), p.1272-1275 |
|---|---|
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1275 |
|---|---|
| container_issue | 7 |
| container_start_page | 1272 |
| container_title | Physical Review Letters |
| container_volume | 75 |
| creator | Agakichiev, G Baur, R Breskin, A Chechik, R Drees, A Jacob, C Faschingbauer, U Fischer, P Fraenkel, Z Fuchs, C Gatti, E Glässel, P Günzel, T de los Heros CP Hess, F Irmscher, D Lenkeit, B Olsen, LH Panebrattsev, Y Pfeiffer, A Ravinovich, I, I Rehak, P Schön, A Schukraft, J Sampietro, M Shimansky, S Shor, A Specht, HJ Steiner, V, V Tapprogge, S Tel-Zur, G Tserruya, I, I Ullrich, T Wurm, JP Yurevich, V, V |
| description | We report on measurements of low-mass electron pairs in 450 GeV {ital p}-Be, {ital p}-Au, and 200 GeV/nucleon S-Au collisions at central rapidities. For the proton induced interactions, the low-mass spectra are, within the systematic errors, satisfactorily explained by electron pairs from hadron decays, whereas in the S-Au system an enhancement over the hadronic contributions by a factor of 5.0{plus_minus}0.7(stat){plus_minus}2.0(syst) in the invariant mass range 0.2{lt}{ital m}{lt}1.5 GeV/{ital c}{sup 2} is observed. The properties of the excess suggest that it arises from two-pion annihilation {pi}{pi}{r_arrow}{ital e}{sup +}{ital e}{sup {minus}}. |
| doi_str_mv | 10.1103/PhysRevLett.75.1272 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_proquest_miscellaneous_1859258481</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1859258481</sourcerecordid><originalsourceid>FETCH-LOGICAL-c374t-ab70d73dc28ef8ba2698e0f1bc1f48a30bd61eba546a5ede800a87ef1a6984c83</originalsourceid><addsrcrecordid>eNpNkU9v1DAQxS0EokvLJ0BC5sYl25k4iZ1jtdoWpBWg_uFqOc5ECcrGS8Yp2m-PV9tDTzMa_94bj54QnxDWiKCuf_VHvqfnHcW41uUac52_ESsEXWcasXgrVgAKsxpAX4gPzH8AAPPKvBcXCFBBXuJKPG-n3k2eWnmYQ7v4OIRJhk6O4V-2d8ySRvJxTsODG2aWwyRzAHlHv6-nxY-UHh6ym0X6MI4DJzFLF2XsSW629z8kLweaT9YxgXycfJ_a5HYl3nVuZPr4Ui_F0-32cfMt2_28-7652WVe6SJmrtHQatX63FBnGpdXtSHosPHYFcYpaNoKqXFlUbmSWjIAzmjq0CWw8EZdii9n38BxsOyHSL73YZrSURaxrGuVmK9nJn3z70Ic7X5gT-PoJgoLWzRlnZemMJhQdUb9HJhn6uxhHvZuPloEewrFvgrF6tKeQkmqzy8LlmZP7SvNOQX1H7qvi_M</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1859258481</pqid></control><display><type>article</type><title>Enhanced production of low-mass electron pairs in 200 GeV/nucleon S-Au collisions at the CERN super proton synchrotron</title><source>American Physical Society Journals</source><creator>Agakichiev, G ; Baur, R ; Breskin, A ; Chechik, R ; Drees, A ; Jacob, C ; Faschingbauer, U ; Fischer, P ; Fraenkel, Z ; Fuchs, C ; Gatti, E ; Glässel, P ; Günzel, T ; de los Heros CP ; Hess, F ; Irmscher, D ; Lenkeit, B ; Olsen, LH ; Panebrattsev, Y ; Pfeiffer, A ; Ravinovich, I, I ; Rehak, P ; Schön, A ; Schukraft, J ; Sampietro, M ; Shimansky, S ; Shor, A ; Specht, HJ ; Steiner, V, V ; Tapprogge, S ; Tel-Zur, G ; Tserruya, I, I ; Ullrich, T ; Wurm, JP ; Yurevich, V, V</creator><creatorcontrib>Agakichiev, G ; Baur, R ; Breskin, A ; Chechik, R ; Drees, A ; Jacob, C ; Faschingbauer, U ; Fischer, P ; Fraenkel, Z ; Fuchs, C ; Gatti, E ; Glässel, P ; Günzel, T ; de los Heros CP ; Hess, F ; Irmscher, D ; Lenkeit, B ; Olsen, LH ; Panebrattsev, Y ; Pfeiffer, A ; Ravinovich, I, I ; Rehak, P ; Schön, A ; Schukraft, J ; Sampietro, M ; Shimansky, S ; Shor, A ; Specht, HJ ; Steiner, V, V ; Tapprogge, S ; Tel-Zur, G ; Tserruya, I, I ; Ullrich, T ; Wurm, JP ; Yurevich, V, V ; Brookhaven National Lab. (BNL), Upton, NY (United States)</creatorcontrib><description>We report on measurements of low-mass electron pairs in 450 GeV {ital p}-Be, {ital p}-Au, and 200 GeV/nucleon S-Au collisions at central rapidities. For the proton induced interactions, the low-mass spectra are, within the systematic errors, satisfactorily explained by electron pairs from hadron decays, whereas in the S-Au system an enhancement over the hadronic contributions by a factor of 5.0{plus_minus}0.7(stat){plus_minus}2.0(syst) in the invariant mass range 0.2{lt}{ital m}{lt}1.5 GeV/{ital c}{sup 2} is observed. The properties of the excess suggest that it arises from two-pion annihilation {pi}{pi}{r_arrow}{ital e}{sup +}{ital e}{sup {minus}}.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/PhysRevLett.75.1272</identifier><identifier>PMID: 10060251</identifier><language>eng</language><publisher>United States</publisher><subject>ANNIHILATION ; BERYLLIUM 9 TARGET ; ELECTRONS ; GEV RANGE 100-1000 ; GOLD 197 TARGET ; MASS SPECTRA ; PAIR PRODUCTION ; PHYSICS ; PROTON REACTIONS ; SPACE-TIME ; SULFUR 32 REACTIONS ; SYNCHROTRONS ; TEV RANGE 01-10</subject><ispartof>Physical Review Letters, 1995-08, Vol.75 (7), p.1272-1275</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c374t-ab70d73dc28ef8ba2698e0f1bc1f48a30bd61eba546a5ede800a87ef1a6984c83</citedby><cites>FETCH-LOGICAL-c374t-ab70d73dc28ef8ba2698e0f1bc1f48a30bd61eba546a5ede800a87ef1a6984c83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,886,2877,2878,27929,27930</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/10060251$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/115993$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Agakichiev, G</creatorcontrib><creatorcontrib>Baur, R</creatorcontrib><creatorcontrib>Breskin, A</creatorcontrib><creatorcontrib>Chechik, R</creatorcontrib><creatorcontrib>Drees, A</creatorcontrib><creatorcontrib>Jacob, C</creatorcontrib><creatorcontrib>Faschingbauer, U</creatorcontrib><creatorcontrib>Fischer, P</creatorcontrib><creatorcontrib>Fraenkel, Z</creatorcontrib><creatorcontrib>Fuchs, C</creatorcontrib><creatorcontrib>Gatti, E</creatorcontrib><creatorcontrib>Glässel, P</creatorcontrib><creatorcontrib>Günzel, T</creatorcontrib><creatorcontrib>de los Heros CP</creatorcontrib><creatorcontrib>Hess, F</creatorcontrib><creatorcontrib>Irmscher, D</creatorcontrib><creatorcontrib>Lenkeit, B</creatorcontrib><creatorcontrib>Olsen, LH</creatorcontrib><creatorcontrib>Panebrattsev, Y</creatorcontrib><creatorcontrib>Pfeiffer, A</creatorcontrib><creatorcontrib>Ravinovich, I, I</creatorcontrib><creatorcontrib>Rehak, P</creatorcontrib><creatorcontrib>Schön, A</creatorcontrib><creatorcontrib>Schukraft, J</creatorcontrib><creatorcontrib>Sampietro, M</creatorcontrib><creatorcontrib>Shimansky, S</creatorcontrib><creatorcontrib>Shor, A</creatorcontrib><creatorcontrib>Specht, HJ</creatorcontrib><creatorcontrib>Steiner, V, V</creatorcontrib><creatorcontrib>Tapprogge, S</creatorcontrib><creatorcontrib>Tel-Zur, G</creatorcontrib><creatorcontrib>Tserruya, I, I</creatorcontrib><creatorcontrib>Ullrich, T</creatorcontrib><creatorcontrib>Wurm, JP</creatorcontrib><creatorcontrib>Yurevich, V, V</creatorcontrib><creatorcontrib>Brookhaven National Lab. (BNL), Upton, NY (United States)</creatorcontrib><title>Enhanced production of low-mass electron pairs in 200 GeV/nucleon S-Au collisions at the CERN super proton synchrotron</title><title>Physical Review Letters</title><addtitle>Phys Rev Lett</addtitle><description>We report on measurements of low-mass electron pairs in 450 GeV {ital p}-Be, {ital p}-Au, and 200 GeV/nucleon S-Au collisions at central rapidities. For the proton induced interactions, the low-mass spectra are, within the systematic errors, satisfactorily explained by electron pairs from hadron decays, whereas in the S-Au system an enhancement over the hadronic contributions by a factor of 5.0{plus_minus}0.7(stat){plus_minus}2.0(syst) in the invariant mass range 0.2{lt}{ital m}{lt}1.5 GeV/{ital c}{sup 2} is observed. The properties of the excess suggest that it arises from two-pion annihilation {pi}{pi}{r_arrow}{ital e}{sup +}{ital e}{sup {minus}}.</description><subject>ANNIHILATION</subject><subject>BERYLLIUM 9 TARGET</subject><subject>ELECTRONS</subject><subject>GEV RANGE 100-1000</subject><subject>GOLD 197 TARGET</subject><subject>MASS SPECTRA</subject><subject>PAIR PRODUCTION</subject><subject>PHYSICS</subject><subject>PROTON REACTIONS</subject><subject>SPACE-TIME</subject><subject>SULFUR 32 REACTIONS</subject><subject>SYNCHROTRONS</subject><subject>TEV RANGE 01-10</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1995</creationdate><recordtype>article</recordtype><recordid>eNpNkU9v1DAQxS0EokvLJ0BC5sYl25k4iZ1jtdoWpBWg_uFqOc5ECcrGS8Yp2m-PV9tDTzMa_94bj54QnxDWiKCuf_VHvqfnHcW41uUac52_ESsEXWcasXgrVgAKsxpAX4gPzH8AAPPKvBcXCFBBXuJKPG-n3k2eWnmYQ7v4OIRJhk6O4V-2d8ySRvJxTsODG2aWwyRzAHlHv6-nxY-UHh6ym0X6MI4DJzFLF2XsSW629z8kLweaT9YxgXycfJ_a5HYl3nVuZPr4Ui_F0-32cfMt2_28-7652WVe6SJmrtHQatX63FBnGpdXtSHosPHYFcYpaNoKqXFlUbmSWjIAzmjq0CWw8EZdii9n38BxsOyHSL73YZrSURaxrGuVmK9nJn3z70Ic7X5gT-PoJgoLWzRlnZemMJhQdUb9HJhn6uxhHvZuPloEewrFvgrF6tKeQkmqzy8LlmZP7SvNOQX1H7qvi_M</recordid><startdate>19950814</startdate><enddate>19950814</enddate><creator>Agakichiev, G</creator><creator>Baur, R</creator><creator>Breskin, A</creator><creator>Chechik, R</creator><creator>Drees, A</creator><creator>Jacob, C</creator><creator>Faschingbauer, U</creator><creator>Fischer, P</creator><creator>Fraenkel, Z</creator><creator>Fuchs, C</creator><creator>Gatti, E</creator><creator>Glässel, P</creator><creator>Günzel, T</creator><creator>de los Heros CP</creator><creator>Hess, F</creator><creator>Irmscher, D</creator><creator>Lenkeit, B</creator><creator>Olsen, LH</creator><creator>Panebrattsev, Y</creator><creator>Pfeiffer, A</creator><creator>Ravinovich, I, I</creator><creator>Rehak, P</creator><creator>Schön, A</creator><creator>Schukraft, J</creator><creator>Sampietro, M</creator><creator>Shimansky, S</creator><creator>Shor, A</creator><creator>Specht, HJ</creator><creator>Steiner, V, V</creator><creator>Tapprogge, S</creator><creator>Tel-Zur, G</creator><creator>Tserruya, I, I</creator><creator>Ullrich, T</creator><creator>Wurm, JP</creator><creator>Yurevich, V, V</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>19950814</creationdate><title>Enhanced production of low-mass electron pairs in 200 GeV/nucleon S-Au collisions at the CERN super proton synchrotron</title><author>Agakichiev, G ; Baur, R ; Breskin, A ; Chechik, R ; Drees, A ; Jacob, C ; Faschingbauer, U ; Fischer, P ; Fraenkel, Z ; Fuchs, C ; Gatti, E ; Glässel, P ; Günzel, T ; de los Heros CP ; Hess, F ; Irmscher, D ; Lenkeit, B ; Olsen, LH ; Panebrattsev, Y ; Pfeiffer, A ; Ravinovich, I, I ; Rehak, P ; Schön, A ; Schukraft, J ; Sampietro, M ; Shimansky, S ; Shor, A ; Specht, HJ ; Steiner, V, V ; Tapprogge, S ; Tel-Zur, G ; Tserruya, I, I ; Ullrich, T ; Wurm, JP ; Yurevich, V, V</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c374t-ab70d73dc28ef8ba2698e0f1bc1f48a30bd61eba546a5ede800a87ef1a6984c83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1995</creationdate><topic>ANNIHILATION</topic><topic>BERYLLIUM 9 TARGET</topic><topic>ELECTRONS</topic><topic>GEV RANGE 100-1000</topic><topic>GOLD 197 TARGET</topic><topic>MASS SPECTRA</topic><topic>PAIR PRODUCTION</topic><topic>PHYSICS</topic><topic>PROTON REACTIONS</topic><topic>SPACE-TIME</topic><topic>SULFUR 32 REACTIONS</topic><topic>SYNCHROTRONS</topic><topic>TEV RANGE 01-10</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Agakichiev, G</creatorcontrib><creatorcontrib>Baur, R</creatorcontrib><creatorcontrib>Breskin, A</creatorcontrib><creatorcontrib>Chechik, R</creatorcontrib><creatorcontrib>Drees, A</creatorcontrib><creatorcontrib>Jacob, C</creatorcontrib><creatorcontrib>Faschingbauer, U</creatorcontrib><creatorcontrib>Fischer, P</creatorcontrib><creatorcontrib>Fraenkel, Z</creatorcontrib><creatorcontrib>Fuchs, C</creatorcontrib><creatorcontrib>Gatti, E</creatorcontrib><creatorcontrib>Glässel, P</creatorcontrib><creatorcontrib>Günzel, T</creatorcontrib><creatorcontrib>de los Heros CP</creatorcontrib><creatorcontrib>Hess, F</creatorcontrib><creatorcontrib>Irmscher, D</creatorcontrib><creatorcontrib>Lenkeit, B</creatorcontrib><creatorcontrib>Olsen, LH</creatorcontrib><creatorcontrib>Panebrattsev, Y</creatorcontrib><creatorcontrib>Pfeiffer, A</creatorcontrib><creatorcontrib>Ravinovich, I, I</creatorcontrib><creatorcontrib>Rehak, P</creatorcontrib><creatorcontrib>Schön, A</creatorcontrib><creatorcontrib>Schukraft, J</creatorcontrib><creatorcontrib>Sampietro, M</creatorcontrib><creatorcontrib>Shimansky, S</creatorcontrib><creatorcontrib>Shor, A</creatorcontrib><creatorcontrib>Specht, HJ</creatorcontrib><creatorcontrib>Steiner, V, V</creatorcontrib><creatorcontrib>Tapprogge, S</creatorcontrib><creatorcontrib>Tel-Zur, G</creatorcontrib><creatorcontrib>Tserruya, I, I</creatorcontrib><creatorcontrib>Ullrich, T</creatorcontrib><creatorcontrib>Wurm, JP</creatorcontrib><creatorcontrib>Yurevich, V, V</creatorcontrib><creatorcontrib>Brookhaven National Lab. (BNL), Upton, NY (United States)</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Physical Review Letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Agakichiev, G</au><au>Baur, R</au><au>Breskin, A</au><au>Chechik, R</au><au>Drees, A</au><au>Jacob, C</au><au>Faschingbauer, U</au><au>Fischer, P</au><au>Fraenkel, Z</au><au>Fuchs, C</au><au>Gatti, E</au><au>Glässel, P</au><au>Günzel, T</au><au>de los Heros CP</au><au>Hess, F</au><au>Irmscher, D</au><au>Lenkeit, B</au><au>Olsen, LH</au><au>Panebrattsev, Y</au><au>Pfeiffer, A</au><au>Ravinovich, I, I</au><au>Rehak, P</au><au>Schön, A</au><au>Schukraft, J</au><au>Sampietro, M</au><au>Shimansky, S</au><au>Shor, A</au><au>Specht, HJ</au><au>Steiner, V, V</au><au>Tapprogge, S</au><au>Tel-Zur, G</au><au>Tserruya, I, I</au><au>Ullrich, T</au><au>Wurm, JP</au><au>Yurevich, V, V</au><aucorp>Brookhaven National Lab. (BNL), Upton, NY (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhanced production of low-mass electron pairs in 200 GeV/nucleon S-Au collisions at the CERN super proton synchrotron</atitle><jtitle>Physical Review Letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>1995-08-14</date><risdate>1995</risdate><volume>75</volume><issue>7</issue><spage>1272</spage><epage>1275</epage><pages>1272-1275</pages><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>We report on measurements of low-mass electron pairs in 450 GeV {ital p}-Be, {ital p}-Au, and 200 GeV/nucleon S-Au collisions at central rapidities. For the proton induced interactions, the low-mass spectra are, within the systematic errors, satisfactorily explained by electron pairs from hadron decays, whereas in the S-Au system an enhancement over the hadronic contributions by a factor of 5.0{plus_minus}0.7(stat){plus_minus}2.0(syst) in the invariant mass range 0.2{lt}{ital m}{lt}1.5 GeV/{ital c}{sup 2} is observed. The properties of the excess suggest that it arises from two-pion annihilation {pi}{pi}{r_arrow}{ital e}{sup +}{ital e}{sup {minus}}.</abstract><cop>United States</cop><pmid>10060251</pmid><doi>10.1103/PhysRevLett.75.1272</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0031-9007 |
| ispartof | Physical Review Letters, 1995-08, Vol.75 (7), p.1272-1275 |
| issn | 0031-9007 1079-7114 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1859258481 |
| source | American Physical Society Journals |
| subjects | ANNIHILATION BERYLLIUM 9 TARGET ELECTRONS GEV RANGE 100-1000 GOLD 197 TARGET MASS SPECTRA PAIR PRODUCTION PHYSICS PROTON REACTIONS SPACE-TIME SULFUR 32 REACTIONS SYNCHROTRONS TEV RANGE 01-10 |
| title | Enhanced production of low-mass electron pairs in 200 GeV/nucleon S-Au collisions at the CERN super proton synchrotron |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-13T08%3A13%3A19IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Enhanced%20production%20of%20low-mass%20electron%20pairs%20in%20200%20GeV/nucleon%20S-Au%20collisions%20at%20the%20CERN%20super%20proton%20synchrotron&rft.jtitle=Physical%20Review%20Letters&rft.au=Agakichiev,%20G&rft.aucorp=Brookhaven%20National%20Lab.%20(BNL),%20Upton,%20NY%20(United%20States)&rft.date=1995-08-14&rft.volume=75&rft.issue=7&rft.spage=1272&rft.epage=1275&rft.pages=1272-1275&rft.issn=0031-9007&rft.eissn=1079-7114&rft_id=info:doi/10.1103/PhysRevLett.75.1272&rft_dat=%3Cproquest_osti_%3E1859258481%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1859258481&rft_id=info:pmid/10060251&rfr_iscdi=true |