Details

Autor(en) / Beteiligte

• Aaij, R

Titel

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

Ist Teil von

• Physical review letters, 2018-11, Vol.121 (22), p.222001

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2018

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• 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.