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arXiv · 1508.00295

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
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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.

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A. Esposito, A. L. Guerrieri, L. Maiani, F. Piccinini, A. Pilloni, A. D. Polosa, V. Riquer. 2015-08-03. The observation of light nuclei at ALICE and the X(3872) conundrum. https://doi.org/10.1103/physrevd.92.034028

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