arXiv:1508.00295·v2·High Energy Physics — Phenomenology
The observation of light nuclei at ALICE and the X(3872) conundrum
A. Esposito🇺🇸 · A.L. Guerrieri🇮🇹 · L. Maiani🇮🇹 · F. Piccinini🇮🇹 · A. Pilloni🇮🇹 · A.D. Polosa🇮🇹 · V. Riquer🇮🇹
Abstract
The new data reported by ALICE on the production of light nuclei with pT < 10 GeV in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV are used to compute an order-of-magnitude estimate of the expected production cross sections of light nuclei in proton-proton collisions at high transverse momenta. We compare the hypertriton, helium-3 and deuteron production cross sections to that of X(3872), measured in prompt pp collisions by CMS. The results we find suggest a different production mechanism for the X(3872), making questionable any loosely bound molecule interpretation.
Comments: 5 pages, 2 figures. Version accepted on PRD