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

Anticic, T.; Grebieszkow, K.; Lacey, R.; Cramer, J.G.; Wojtaszek-Szwarc, A.; Siklér, F.; Eckardt, V.; Beck, H.; Laszlo, A.; Baatar, B.; Panagiotou, A.D.; Fodor, Z.; Malakhov, A.I.; Schmitz, N.; Höhne, C.; Białkowska, H.; Renfordt, R.; Kowalski, M.; Mrówczyński, St.; Szuba, M.; Prindle, D.; Pühlhofer, F.; Christakoglou, P.; Schuster, T.; Stefanek, G.; Bartke, J.; Chung, P.; van Leeuwen, M.; Kadija, K.; Friese, V.; Susa, T.; Karev, A.; Vranić, D.; Boimska, B.; Chvala, O.; Roland, G.; Gaździcki, M.; Włodarczyk, Z.; Rybczyński, M.; Kresan, D.; Ströbele, H.; Makariev, M.; Stock, R.; Slodkowski, M.; Bunčić, P.; Foka, P.; Varga, D.; Mitrovski, M.; Skrzypczak, E.; Vassiliou, M.; Veres, G.I.; Pálla, G.; Seyboth, P.; Betev, L.; Rybicki, A.; Blume, C.; Rustamov, A.; Vesztergombi, G.; Melkumov, G.L.; Botje, M.; Kolesnikov, V.I.; Book, J.; Maćkowiak-Pawłowska, M.; Sandoval, A.; Roland, C.

doi:10.1103/PhysRevC.94.044906

Article
Report number	arXiv:1606.04234 ; CERN-EP-2016-107
Title	Production of deuterium, tritium, and $^3$He in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV at the CERN SPS
Author(s)	Anticic, T. (Boskovic Inst., Zagreb) ; Baatar, B. (Dubna, JINR) ; Bartke, J. (Cracow, INP) ; Beck, H. (Hamburg U., Dept. Math.) ; Betev, L. (CERN) ; Białkowska, H. (Warsaw, Inst. Nucl. Studies) ; Blume, C. (Hamburg U., Dept. Math.) ; Boimska, B. (Warsaw, Inst. Nucl. Studies) ; Book, J. (Hamburg U., Dept. Math.) ; Botje, M. (NIKHEF, Amsterdam) ; Bunčić, P. (CERN) ; Christakoglou, P. (NIKHEF, Amsterdam) ; Chung, P. (SUNY, Stony Brook) ; Chvala, O. (Charles U.) ; Cramer, J.G. (Washington U., Seattle) ; Eckardt, V. (Munich, Max Planck Inst.) ; Fodor, Z. (Budapest, RMKI) ; Foka, P. (Darmstadt, GSI) ; Friese, V. (Darmstadt, GSI) ; Gaździcki, M. (Hamburg U., Dept. Math. ; Jan Kochanowski U.) ; Grebieszkow, K. (Warsaw U. of Tech.) ; Höhne, C. (Darmstadt, GSI) ; Kadija, K. (Boskovic Inst., Zagreb) ; Karev, A. (CERN) ; Kolesnikov, V.I. (Dubna, JINR) ; Kowalski, M. (Cracow, INP) ; Kresan, D. (Darmstadt, GSI) ; Laszlo, A. (Budapest, RMKI) ; Lacey, R. (SUNY, Stony Brook) ; van Leeuwen, M. (NIKHEF, Amsterdam) ; Maćkowiak-Pawłowska, M. (Warsaw U. of Tech.) ; Makariev, M. (Sofiya, Inst. Nucl. Res.) ; Malakhov, A.I. (Dubna, JINR) ; Melkumov, G.L. (Dubna, JINR) ; Mitrovski, M. (Hamburg U., Dept. Math.) ; Mrówczyński, St. (Jan Kochanowski U.) ; Pálla, G. (Budapest, RMKI) ; Panagiotou, A.D. (Athens U.) ; Prindle, D. (Washington U., Seattle) ; Pühlhofer, F. (Hamburg U., Dept. Math.) ; Renfordt, R. (Hamburg U., Dept. Math.) ; Roland, C. (MIT) ; Roland, G. (MIT) ; Rustamov, A. (Hamburg U., Dept. Math.) ; Rybczyński, M. (Jan Kochanowski U.) ; Rybicki, A. (Cracow, INP) ; Sandoval, A. (Darmstadt, GSI) ; Schmitz, N. (Munich, Max Planck Inst.) ; Schuster, T. (Hamburg U., Dept. Math.) ; Seyboth, P. (Munich, Max Planck Inst.) ; Siklér, F. (Budapest, RMKI) ; Skrzypczak, E. (Warsaw U.) ; Slodkowski, M. (Warsaw U. of Tech.) ; Stefanek, G. (Jan Kochanowski U.) ; Stock, R. (Hamburg U., Dept. Math.) ; Ströbele, H. (Hamburg U., Dept. Math.) ; Susa, T. (Boskovic Inst., Zagreb) ; Szuba, M. (Warsaw U. of Tech.) ; Varga, D. (Eotvos U.) ; Vassiliou, M. (Athens U.) ; Veres, G.I. (Budapest, RMKI) ; Vesztergombi, G. (Budapest, RMKI) ; Vranić, D. (Darmstadt, GSI) ; Włodarczyk, Z. (Jan Kochanowski U.) ; Wojtaszek-Szwarc, A. (Jan Kochanowski U.)
Publication	2016-10-13
Imprint	15 Jun 2016
Number of pages	20
Note	22 pages, 29 figures, 8 tables, for submission to Phys. Rev. C
In:	Phys. Rev. C 94 (2016) 044906
DOI	10.1103/PhysRevC.94.044906
Subject category	Nuclear Physics - Experiment
Accelerator/Facility, Experiment	CERN SPS ; NA49
Free keywords	relativistic heavy ion physics ; particle and resonance production ; experimental results ; heavy-ion collisions ; production of light nuclei d,t,3He
Abstract	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.
Copyright/License	arXiv nonexclusive-distrib. 1.0 preprint: © 2016-2024 CERN (License: CC-BY-4.0) publication: © 2016-2024 The Author(s) (License: CC-BY-3.0)

$(Color online) a) Energy loss \dedx~versus mass-squared from Pb+Pb at 20\agev~for the momentum interval 6$<$p$<$8~\gevc~. Deuteron and triton candidates are selected within the 3$\sigma$ PID ellipses indicated by the dashed lines. b) Mass-squared distribution after a \dedx~upper limit cut (see text). The solid line indicates the best fit with two Gaussians (the dotted lines) and the background (the dash-dotted line).$ $(Color online) a) Energy loss \dedx~versus mass-squared from Pb+Pb at 20\agev~for the momentum interval 6$<$p$<$8~\gevc~. Deuteron and triton candidates are selected within the 3$\sigma$ PID ellipses indicated by the dashed lines. b) Mass-squared distribution after a \dedx~upper limit cut (see text). The solid line indicates the best fit with two Gaussians (the dotted lines) and the background (the dash-dotted line).$ $(Color online) a) Energy loss \dedx~measured in the MTPC as a function of rigidity for charged tracks from central Pb+Pb collisions at 40\agev. The dashed curves indicate the PID cut boundaries used for selection of $^3$He. b) Distribution of \dedx~in the momentum interval $8<p<10$~\gevc. A fit of a Gaussian signal plus background is shown by the solid curve. Black vertical lines indicate the selection window for $^3$He.$ Show more plots

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