Measurement of the production of (anti)nuclei in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV

Abstract

Measurements of (anti)proton, (anti)deuteron, and (anti)${}^3$He production in the rapidity range $-1<y<0$ as a function of the transverse momentum and event multiplicity in p-Pb collisions at a center-of-mass energy per nucleon-nucleon pair $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV are presented. The coalescence parameters $B_2$ and $B_3$, measured as a function of the transverse momentum per nucleon and of the mean charged-particle multiplicity density, confirm a smooth evolution from low to high multiplicity across different collision systems and energies. The ratios between (anti)deuteron and (anti)${}^3$He yields and those of (anti)protons are also reported as a function of the mean charged-particle multiplicity density. A comparison with the predictions of the statistical hadronization and coalescence models for different collision systems and center-of-mass energies favors the coalescence description for the deuteron-to-proton yield ratio with respect to the canonical statistical model.

27 pages, 4 captioned figures, 3 tables, authors from page 22, published version, figures at http://alice-publications.web.cern.ch/node/8796

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Cited by in corpus (1)

• Measurement of the low-energy antitriton inelastic cross section