NA60 results on $p_T$ spectra and the $\rho$ spectral function in In-In collisions

The NA60 experiment at the CERN SPS has studied low-mass muon pairs in 158 AGeV In-In collisions. A strong excess of pairs is observed above the yield expected from neutral meson decays. The unprecedented sample size of close to 400K events and the good mass resolution of about 2% have made it possi...

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Detalles Bibliográficos
Autores principales: Seixas, J, Arnaldi, R, Averbeck, R, Banicz, K, Castor, J, Chaurand, B, Cicalò, C, Colla, A, Cortese, P, Damjanovic, S, David, A, De Falco, A, Devaux, A, Drees, A, Ducroux, L, Enyo, H, Ferretti, A, Floris, M, Förster, A, Force, P, Guettet, N, Guichard, A, Gulkanian, o H, Keil, M, Kluberg, L, Lourenço, C, Lozano, J, Manso, F, Masoni, A, Martins, P, Neves, A, Ohnishi, H, Oppedisano, C, Parracho, P, Pillot, P, Puddu, G, Radermacher, E, Ramalhete, P, Rosinsky, P, Scomparin, E, Serci, S, Shahoyan, R, Sonderegger, P, Specht, H J, Tieulent, R, Usai, G, Veenhof, R, Wöhri, H K
Lenguaje:eng
Publicado: 2007
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1088/0954-3899/34/8/S148
http://cds.cern.ch/record/1037423
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author Seixas, J
Arnaldi, R
Averbeck, R
Banicz, K
Castor, J
Chaurand, B
Cicalò, C
Colla, A
Cortese, P
Damjanovic, S
David, A
De Falco, A
Devaux, A
Drees, A
Ducroux, L
Enyo, H
Ferretti, A
Floris, M
Förster, A
Force, P
Guettet, N
Guichard, A
Gulkanian, o H
Keil, M
Kluberg, L
Lourenço, C
Lozano, J
Manso, F
Masoni, A
Martins, P
Neves, A
Ohnishi, H
Oppedisano, C
Parracho, P
Pillot, P
Puddu, G
Radermacher, E
Ramalhete, P
Rosinsky, P
Scomparin, E
Serci, S
Shahoyan, R
Sonderegger, P
Specht, H J
Tieulent, R
Usai, G
Veenhof, R
Wöhri, H K
author_facet Seixas, J
Arnaldi, R
Averbeck, R
Banicz, K
Castor, J
Chaurand, B
Cicalò, C
Colla, A
Cortese, P
Damjanovic, S
David, A
De Falco, A
Devaux, A
Drees, A
Ducroux, L
Enyo, H
Ferretti, A
Floris, M
Förster, A
Force, P
Guettet, N
Guichard, A
Gulkanian, o H
Keil, M
Kluberg, L
Lourenço, C
Lozano, J
Manso, F
Masoni, A
Martins, P
Neves, A
Ohnishi, H
Oppedisano, C
Parracho, P
Pillot, P
Puddu, G
Radermacher, E
Ramalhete, P
Rosinsky, P
Scomparin, E
Serci, S
Shahoyan, R
Sonderegger, P
Specht, H J
Tieulent, R
Usai, G
Veenhof, R
Wöhri, H K
author_sort Seixas, J
collection CERN
description The NA60 experiment at the CERN SPS has studied low-mass muon pairs in 158 AGeV In-In collisions. A strong excess of pairs is observed above the yield expected from neutral meson decays. The unprecedented sample size of close to 400K events and the good mass resolution of about 2% have made it possible to isolate the excess by subtraction of the decay sources (keeping the $\rho$). The shape of the resulting mass spectrum exhibits considerable broadening, but essentially no shift in mass. The acceptance-corrected transverse-momentum spectra have a shape atypical for radial flow and show a significant mass dependence, pointing to different sources in different mass regions.
id cern-1037423
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
record_format invenio
spelling cern-10374232019-09-30T06:29:59Zdoi:10.1088/0954-3899/34/8/S148http://cds.cern.ch/record/1037423engSeixas, JArnaldi, RAverbeck, RBanicz, KCastor, JChaurand, BCicalò, CColla, ACortese, PDamjanovic, SDavid, ADe Falco, ADevaux, ADrees, ADucroux, LEnyo, HFerretti, AFloris, MFörster, AForce, PGuettet, NGuichard, AGulkanian, o HKeil, MKluberg, LLourenço, CLozano, JManso, FMasoni, AMartins, PNeves, AOhnishi, HOppedisano, CParracho, PPillot, PPuddu, GRadermacher, ERamalhete, PRosinsky, PScomparin, ESerci, SShahoyan, RSonderegger, PSpecht, H JTieulent, RUsai, GVeenhof, RWöhri, H KNA60 results on $p_T$ spectra and the $\rho$ spectral function in In-In collisionsNuclear Physics - ExperimentThe NA60 experiment at the CERN SPS has studied low-mass muon pairs in 158 AGeV In-In collisions. A strong excess of pairs is observed above the yield expected from neutral meson decays. The unprecedented sample size of close to 400K events and the good mass resolution of about 2% have made it possible to isolate the excess by subtraction of the decay sources (keeping the $\rho$). The shape of the resulting mass spectrum exhibits considerable broadening, but essentially no shift in mass. The acceptance-corrected transverse-momentum spectra have a shape atypical for radial flow and show a significant mass dependence, pointing to different sources in different mass regions.arXiv:0705.3138oai:cds.cern.ch:10374232007-05-23
spellingShingle Nuclear Physics - Experiment
Seixas, J
Arnaldi, R
Averbeck, R
Banicz, K
Castor, J
Chaurand, B
Cicalò, C
Colla, A
Cortese, P
Damjanovic, S
David, A
De Falco, A
Devaux, A
Drees, A
Ducroux, L
Enyo, H
Ferretti, A
Floris, M
Förster, A
Force, P
Guettet, N
Guichard, A
Gulkanian, o H
Keil, M
Kluberg, L
Lourenço, C
Lozano, J
Manso, F
Masoni, A
Martins, P
Neves, A
Ohnishi, H
Oppedisano, C
Parracho, P
Pillot, P
Puddu, G
Radermacher, E
Ramalhete, P
Rosinsky, P
Scomparin, E
Serci, S
Shahoyan, R
Sonderegger, P
Specht, H J
Tieulent, R
Usai, G
Veenhof, R
Wöhri, H K
NA60 results on $p_T$ spectra and the $\rho$ spectral function in In-In collisions
title NA60 results on $p_T$ spectra and the $\rho$ spectral function in In-In collisions
title_full NA60 results on $p_T$ spectra and the $\rho$ spectral function in In-In collisions
title_fullStr NA60 results on $p_T$ spectra and the $\rho$ spectral function in In-In collisions
title_full_unstemmed NA60 results on $p_T$ spectra and the $\rho$ spectral function in In-In collisions
title_short NA60 results on $p_T$ spectra and the $\rho$ spectral function in In-In collisions
title_sort na60 results on $p_t$ spectra and the $\rho$ spectral function in in-in collisions
topic Nuclear Physics - Experiment
url https://dx.doi.org/10.1088/0954-3899/34/8/S148
http://cds.cern.ch/record/1037423
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