Production of deuterium, tritium, and He 3 in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV at the CERN Super Proton Synchrotron

Anticic, T. and Baatar, B. and Beck, H. and Betev, L. and Białkowska, H. and Fodor, Zoltán and László, András and Pálla, Gabriella and Siklér, Ferenc and Varga, Dezső and Veres, Gábor and Vesztergombi, György (2016) Production of deuterium, tritium, and He 3 in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV at the CERN Super Proton Synchrotron. PHYSICAL REVIEW C, 94 (4). ISSN 2469-9985

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Abstract

Production of d, t, and 3He nuclei in central Pb+Pb interactions was studied at five collision energies (√sNN = 6.3, 7.6, 8.8, 12.3, and 17.3 GeV) with the NA49 detector at the CERN SPS. Transverse momentum spectra, rapidity distributions, and particle ratios were measured. Yields are compared to predictions of statistical models. Phase-space distributions of light nuclei are discussed and compared to those of protons in the context of a coalescence approach. The coalescence parameters B2 and B3, as well as coalescence radii for d and 3He were determined as a function of transverse mass at all energies.

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