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Measurement of antiproton production in p –He collisions at LHCb to constrain the secondary cosmic antiproton flux
Author(s) -
Graziani G.
Publication year - 2017
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.201713446
Subject(s) - antiproton , physics , cosmic ray , nuclear physics , flux (metallurgy) , large hadron collider , particle physics , scattering , dark matter , proton , materials science , optics , metallurgy
The flux of cosmic ray antiprotons is a powerful tool for indirect detection of dark matter. The sensitivity is limited by the uncertainty on the predicted antiproton flux from scattering of primary rays on the interstellar medium. This is, in turn, limited by the knowledge of production cross‐sections, notably in p –He scattering. Thanks to its internal gas target, the LHCb experiment performed the first measurement of antiproton production from collisions of LHC proton beams on He nuclei at rest. The results and prospects are presented.