Measurement of antiproton production from antihyperon decays in [Formula omitted] collisions at [Formula omitted][Formula omitted]

The interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. Using collisions of protons with an energy of 6.5 [Formula om...

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Published in:The European physical journal. C, Particles and fields Particles and fields, 2023-06, Vol.83 (6)
Main Authors: Aaij, R, Abdelmotteleb, A. S. W, Beteta, C. Abellan, Abudinén, F, Ackernley, T, Adeva, B, Adinolfi, M
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Language:English
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Collisions (Nuclear physics)
Measurement
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container_title The European physical journal. C, Particles and fields
container_volume 83
creator Aaij, R
Abdelmotteleb, A. S. W
Beteta, C. Abellan
Abudinén, F
Ackernley, T
Adeva, B
Adinolfi, M
description The interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. Using collisions of protons with an energy of 6.5 [Formula omitted] incident on helium nuclei at rest in the proximity of the interaction region of the LHCb experiment, the ratio of antiprotons originating from antihyperon decays to prompt production is measured for antiproton momenta between 12 and [Formula omitted]. The dominant antihyperon contribution, namely [Formula omitted] decays from promptly produced [Formula omitted] particles, is also exclusively measured. The results complement the measurement of prompt antiproton production obtained from the same data sample. At the energy scale of this measurement, the antihyperon contributions to antiproton production are observed to be significantly larger than predictions of commonly used hadronic production models.
doi_str_mv 10.1140/epjc/s10052-023-11673-x
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subjects Collisions (Nuclear physics)
Measurement
title Measurement of antiproton production from antihyperon decays in [Formula omitted] collisions at [Formula omitted][Formula omitted]
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