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@ARTICLE{Acharya:250887,
author = {Acharya, Shreyasi and others},
title = {{M}easurement of anti-$^3${H}e nuclei absorption in matter
and impact on their propagation in the {G}alaxy.},
journal = {Nature physics},
volume = {19},
number = {1},
issn = {1745-2473},
address = {Basingstoke},
publisher = {Nature Publishing Group},
reportid = {GSI-2023-00113, arXiv:2202.01549. CERN-EP-2022-023},
pages = {61-71},
year = {2023},
note = {27 pages, 5 captioned figures, authors from page 22,
published version, figures at
http://alice-publications.web.cern.ch/node/7639SCOAP3
ccby4.0},
abstract = {In our Galaxy, light antinuclei composed of antiprotons and
antineutrons can be produced through high-energy cosmic-ray
collisions with the interstellar medium or could also
originate from the annihilation of dark-matter particles
that have not yet been discovered. On Earth, the only way to
produce and study antinuclei with high precision is to
create them at high-energy particle accelerators. Although
the properties of elementary antiparticles have been studied
in detail, the knowledge of the interaction of light
antinuclei with matter is limited. We determine the
disappearance probability of $^{3}\overline{\rm He}$ when it
encounters matter particles and annihilates or disintegrates
within the ALICE detector at the Large Hadron Collider. We
extract the inelastic interaction cross section, which is
then used as input to calculations of the transparency of
our Galaxy to the propagation of $^{3}\overline{\rm He}$
stemming from dark-matter annihilation and cosmic-ray
interactions within the interstellar medium. For a specific
dark-matter profile, we estimate a transparency of about
50\%, whereas it varies with increasing $^{3}\overline{\rm
He}$ momentum from 25\% to 90\% for cosmic-ray sources. The
results indicate that $^{3}\overline{\rm He}$ nuclei can
travel long distances in the Galaxy, and can be used to
study cosmic-ray interactions and dark-matter annihilation.},
keywords = {cosmic radiation: interaction (INSPIRE) / dark matter:
decay (INSPIRE) / cross section: measured (INSPIRE) /
propagation (INSPIRE) / galaxy (INSPIRE) / transparency
(INSPIRE) / antinucleus (INSPIRE) / CERN LHC Coll (INSPIRE)
/ anti-p (INSPIRE) / anti-n (INSPIRE) / accelerator
(INSPIRE) / absorption (INSPIRE) / antimatter (INSPIRE) /
ALICE (INSPIRE) / annihilation (INSPIRE) / antiparticle
(INSPIRE) / experimental results (INSPIRE)},
cin = {ALI / DTL / CIT / EXM / ALICE@CERN},
ddc = {530},
cid = {I:(DE-Ds200)ALI-20080822OR105 /
I:(DE-Ds200)DTL-20051214OR031 /
I:(DE-Ds200)CIT-20110310OR121 /
I:(DE-Ds200)EXM-20080818OR100 / I:(DE-Ds200)Coll-CERN-ALICE},
pnm = {612 - Cosmic Matter in the Laboratory (POF4-612) / HGS-HIRe
- HGS-HIRe for FAIR (HGS-HIRe) / SUC-GSI-Heidelberg -
Strategic university cooperation GSI-U Heidelberg
(SUC-GSI-HE) / SUC-GSI-Frankfurt - Strategic university
cooperation GSI-U Frankfurt/M (SUC-GSI-FR) /
SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU
Darmstadt (SUC-GSI-DA)},
pid = {G:(DE-HGF)POF4-612 / G:(DE-Ds200)HGS-HIRe /
G:(DE-Ds200)SUC-GSI-HE / G:(DE-Ds200)SUC-GSI-FR /
G:(DE-Ds200)SUC-GSI-DA},
experiment = {EXP:(DE-H253)LHC-Exp-ALICE-20150101},
typ = {PUB:(DE-HGF)16},
eprint = {2202.01549},
howpublished = {arXiv:2202.01549},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2202.01549;\%\%$},
UT = {WOS:001031009800007},
doi = {10.1038/s41567-022-01804-8},
url = {https://repository.gsi.de/record/250887},
}