Low mass dimuon production in proton-nucleus and Indium-Indium collisions

NA60 Collaboration

Low mass dimuon production in proton-nucleus and Indium-Indium collisions

NA60 Collaboration

Physics and Astronomy

University of Lisbon
University of Turin
Stony Brook University
CERN
Heidelberg University
Université Blaise Pascal
Laboratoire Leprince-Ringuet
University of Cagliari
Universite Claude Bernard Lyon 1
RIKEN
A. Alikhanian Yerevan Institute of Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

The NA60 experiment studied low-mass dimuon production in proton-nucleus and indium-indium collisions at the CERN SPS. While the p-A data can be well described by a superposition of light neutral meson decays, an excess is observed in the heavy-ion data, increasing with collision centrality, with respect to these expected sources. Thanks to the high statistics and good quality of our measurement, we can subtract the muon pairs due to η, η, ω and φ decays from the signal dimuon mass distribution. The resulting spectra are compatible with a ρ spectral function broadening from peripheral to central collisions, with no change in the pole mass.

Original language	English
Journal	Proceedings of Science
Volume	21
State	Published - 2005
Event	2005 International Europhysics Conference on High Energy Physics, HEP 2005 - Lisboa, Portugal Duration: Jul 21 2005 → Jul 27 2005

Cite this

@article{b8004b45789a4077a9075dd42373a688,

title = "Low mass dimuon production in proton-nucleus and Indium-Indium collisions",

abstract = "The NA60 experiment studied low-mass dimuon production in proton-nucleus and indium-indium collisions at the CERN SPS. While the p-A data can be well described by a superposition of light neutral meson decays, an excess is observed in the heavy-ion data, increasing with collision centrality, with respect to these expected sources. Thanks to the high statistics and good quality of our measurement, we can subtract the muon pairs due to η, η, ω and φ decays from the signal dimuon mass distribution. The resulting spectra are compatible with a ρ spectral function broadening from peripheral to central collisions, with no change in the pole mass.",

author = "\{NA60 Collaboration\} and Wohri, \{Hermine K.\} and R. Arnaldi and R. Averbeck and K. Banicz and J. Castor and B. Chaurand and C. Cical and A. Colla and P. Cortese and S. Damjanovic and A. David and \{De Falco\}, A. and A. Devaux and A. Drees and L. Ducroux and H. En{\textquoteright}yo and A. Ferretti and M. Floris and P. Force and A. Forster and N. Guettet and A. Guichard and H. Gulkanian and J. Heuser and M. Keil and L. Kluberg and C. Lourenco and J. Lozano and F. Manso and A. Masoni and P. Martins and A. Neves and H. Ohnishi and C. Oppedisano and P. Parracho and P. Pillot and G. Puddu and E. Radermacher and P. Ramalhete and P. Rosinsky and E. Scomparin and J. Seixas and S. Serci and R. Shahoyan and P. Sonderegger and Specht, \{H. J.\} and R. Tieulent and G. Usai and R. Veenhof",

note = "Publisher Copyright: {\textcopyright} Copiright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.; 2005 International Europhysics Conference on High Energy Physics, HEP 2005 ; Conference date: 21-07-2005 Through 27-07-2005",

year = "2005",

language = "English",

volume = "21",

journal = "Proceedings of Science",

issn = "1824-8039",

}

TY - JOUR

T1 - Low mass dimuon production in proton-nucleus and Indium-Indium collisions

AU - NA60 Collaboration

AU - Wohri, Hermine K.

AU - Arnaldi, R.

AU - Averbeck, R.

AU - Banicz, K.

AU - Castor, J.

AU - Chaurand, B.

AU - Cical, C.

AU - Colla, A.

AU - Cortese, P.

AU - Damjanovic, S.

AU - David, A.

AU - De Falco, A.

AU - Devaux, A.

AU - Drees, A.

AU - Ducroux, L.

AU - En’yo, H.

AU - Ferretti, A.

AU - Floris, M.

AU - Force, P.

AU - Forster, A.

AU - Guettet, N.

AU - Guichard, A.

AU - Gulkanian, H.

AU - Heuser, J.

AU - Keil, M.

AU - Kluberg, L.

AU - Lourenco, C.

AU - Lozano, J.

AU - Manso, F.

AU - Masoni, A.

AU - Martins, P.

AU - Neves, A.

AU - Ohnishi, H.

AU - Oppedisano, C.

AU - Parracho, P.

AU - Pillot, P.

AU - Puddu, G.

AU - Radermacher, E.

AU - Ramalhete, P.

AU - Rosinsky, P.

AU - Scomparin, E.

AU - Seixas, J.

AU - Serci, S.

AU - Shahoyan, R.

AU - Sonderegger, P.

AU - Specht, H. J.

AU - Tieulent, R.

AU - Usai, G.

AU - Veenhof, R.

N1 - Publisher Copyright: © Copiright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

PY - 2005

Y1 - 2005

N2 - The NA60 experiment studied low-mass dimuon production in proton-nucleus and indium-indium collisions at the CERN SPS. While the p-A data can be well described by a superposition of light neutral meson decays, an excess is observed in the heavy-ion data, increasing with collision centrality, with respect to these expected sources. Thanks to the high statistics and good quality of our measurement, we can subtract the muon pairs due to η, η, ω and φ decays from the signal dimuon mass distribution. The resulting spectra are compatible with a ρ spectral function broadening from peripheral to central collisions, with no change in the pole mass.

AB - The NA60 experiment studied low-mass dimuon production in proton-nucleus and indium-indium collisions at the CERN SPS. While the p-A data can be well described by a superposition of light neutral meson decays, an excess is observed in the heavy-ion data, increasing with collision centrality, with respect to these expected sources. Thanks to the high statistics and good quality of our measurement, we can subtract the muon pairs due to η, η, ω and φ decays from the signal dimuon mass distribution. The resulting spectra are compatible with a ρ spectral function broadening from peripheral to central collisions, with no change in the pole mass.

UR - https://www.scopus.com/pages/publications/85056255313

M3 - Conference article

AN - SCOPUS:85056255313

SN - 1824-8039

VL - 21

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 2005 International Europhysics Conference on High Energy Physics, HEP 2005

Y2 - 21 July 2005 through 27 July 2005

ER -

Low mass dimuon production in proton-nucleus and Indium-Indium collisions

Abstract

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