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arxiv: 1606.04234 · v2 · pith:L7NN4X2Snew · submitted 2016-06-14 · ⚛️ nucl-ex

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

NA49 Collaboration: T. Anticic , B. Baatar , J. Bartke , H. Beck , L. Betev , H. Bia{\l}kowska , C. Blume , B. Boimska
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J. Book M. Botje P. Bun\v{c}i\'c P. Christakoglou P. Chung O. Chvala J.G. Cramer V. Eckardt Z. Fodor P. Foka V. Friese M. Ga\'zdzicki K. Grebieszkow C. H\"ohne K. Kadija A. Karev V.I. Kolesnikov M. Kowalski D. Kresan A. Laszlo R. Lacey M. van Leeuwen M. Ma\'ckowiak-Paw{\l}owska M. Makariev A.I. Malakhov G.L. Melkumov M. Mitrovski St. Mr\'owczy\'nski G. P\'alla A.D. Panagiotou D. Prindle F. P\"uhlhofer R. Renfordt C. Roland G. Roland A. Rustamov M. Rybczy\'nski A. Rybicki A. Sandoval N. Schmitz T. Schuster P. Seyboth F. Sikl\'er E. Skrzypczak M. Slodkowski G. Stefanek R. Stock H. Str\"obele T. Susa M. Szuba D. Varga M. Vassiliou G.I. Veres G. Vesztergombi D. Vrani\'c Z. W{\l}odarczyk A. Wojtaszek-Szwarc
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keywords coalescencecentralcerncompareddistributionsenergiesnucleiproduction
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Production of $d$, $t$, and $^3$He nuclei in central Pb+Pb interactions was studied at five collision energies ($\sqrt{s_{NN}}=$ 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 $B_2$ and $B_3$, as well as coalescence radii for $d$ and $^3$He were determined as a function of transverse mass at all energies.

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