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  • We report measurements of electron pair production in elementary p + p and d + p reactions at 1.25 GeV/mu with the HADES spectrometer. For the first time, the electron pairs were reconstructed for n + p reactions by detecting the proton spectator from the deuteron breakup. We find that the yield of electron pairs with invariant mass Me+e- > 0.15 GeV/c(2) is about an order of magnitude larger in n + p reactions as compared to p + p. A comparison to model calculations demonstrates that the production mechanism is not sufficiently described yet. The electron pair spectra measured in C + C reactions are compatible with a superposition of elementary n + p and p + p collisions, leaving little room for additional electron pair sources in such light collision systems
  • We report measurements of electron pair production in elementary p + p and d + p reactions at 1.25 GeV/mu with the HADES spectrometer. For the first time, the electron pairs were reconstructed for n + p reactions by detecting the proton spectator from the deuteron breakup. We find that the yield of electron pairs with invariant mass Me+e- > 0.15 GeV/c(2) is about an order of magnitude larger in n + p reactions as compared to p + p. A comparison to model calculations demonstrates that the production mechanism is not sufficiently described yet. The electron pair spectra measured in C + C reactions are compatible with a superposition of elementary n + p and p + p collisions, leaving little room for additional electron pair sources in such light collision systems (en)
Title
  • Origin of the low-mass electron pair excess in light nucleus-nucleus collisions
  • Origin of the low-mass electron pair excess in light nucleus-nucleus collisions (en)
skos:prefLabel
  • Origin of the low-mass electron pair excess in light nucleus-nucleus collisions
  • Origin of the low-mass electron pair excess in light nucleus-nucleus collisions (en)
skos:notation
  • RIV/61389005:_____/10:00355992!RIV11-MSM-61389005
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(IAA100480803), P(LA316), P(LC07050), Z(AV0Z10480505)
http://linked.open...iv/cisloPeriodika
  • 2
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 277547
http://linked.open...ai/riv/idVysledku
  • RIV/61389005:_____/10:00355992
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Virtual bremsstrahlung; Dileptons; Nucleon-nucleon collisions (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [6B21E9C5D15F]
http://linked.open...i/riv/nazevZdroje
  • Physics Letters. B
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 690
http://linked.open...iv/tvurceVysledku
  • Christ, T.
  • Křížek, Filip
  • Balanda, A.
  • Belver, D.
  • Blanco, A.
  • Boyard, J. L.
  • Cabanelas, P.
  • Castro, E.
  • Chernenko, S.
  • Destefanis, M.
  • Dohrmann, F.
  • Dybczak, A.
  • Fabbietti, L.
  • Finocchiaro, P.
  • Kugler, Andrej
  • Lorenz, M.
  • Karavicheva, T.
  • Lapidus, K.
  • Markert, J.
  • Pachmayer, Y.C.
  • Pechenova, O.
  • Braun-Munzinger, P.
  • Michel, J.
  • Böhmer, M.
  • Belyaev, A. V.
  • Díaz, J.
  • Fateev, O. V.
  • Fonte, P.
  • Friese, J.
  • Galatyuk, T.
  • Garzón, J. A
  • Gernhäuser, R.
  • Gil, A.
  • Golubeva, M.
  • Gonzalez-Diaz, D.
  • Holzmann, R.
  • Iori, I.
  • Ivashkin, A.
  • Jurkovic, M.
  • Koenig, I.
  • Koenig, W.
  • Kolb, B. W.
  • Kotte, R.
  • Kuhn, W.
  • Kurepin, A.
  • Lang, S.
  • Lange, J. S.
  • Liu, T.
  • Lopes, L.
  • Maier, L.
  • Mangiarotti, A.
  • Metag, V.
  • Michalska, B.
  • Moriniére, E.
  • Mousa, J.
  • Muntz, C.
  • Naumann, L.
  • Palka, M.
  • Parpottas, Y.
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