Measurement of Antiproton Production in p-He Collisions at sNN =110 GeV

LHCb Collaboration

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The cross section for prompt antiproton production in collisions of protons with an energy of 6.5 TeV incident on helium nuclei at rest is measured with the LHCb experiment from a data set corresponding to an integrated luminosity of 0.5 nb-1. The target is provided by injecting helium gas into the LHC beam line at the LHCb interaction point. The reported results, covering antiproton momenta between 12 and 110 GeV/c, represent the first direct determination of the antiproton production cross section in p-He collisions, and impact the interpretation of recent results on antiproton cosmic rays from space-borne experiments.

Idioma originalAnglès
Número d’article222001
RevistaPhysical Review Letters
Estat de la publicacióPublicada - 29 de nov. 2018


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