Measurement of Antiproton Production in p-He Collisions at root S-NN=110 GeV

Aaij, R, Abelian Beteta, C, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F
et al (show 834 more authors) (2018) Measurement of Antiproton Production in p-He Collisions at root S-NN=110 GeV. PHYSICAL REVIEW LETTERS, 121 (22).

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Abstract

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.

Item Type: Article Fragmentation into hadrons, Hadron-hadron interactions, Particle dark matter, Protons, Hadron colliders, Particle production, Particles and fields Symplectic Admin 15 Feb 2019 15:54 27 Oct 2021 07:22 10.1103/PhysRevLett.121.222001 https://doi.org/10.1103/PhysRevLett.121.222001 https://livrepository.liverpool.ac.uk/id/eprint/3032934