Measurement of anti-.sup.3./sup.He nuclei absorption in matter and impact on their propagation in the Galaxy

Acharya, S.; Adamová, Dagmar; Adler, A.; Adolfsson, J.; Bielčík, J.; Bielčíková, Jana; Broz, M.; Contreras, J. G.; Fialová, V.; Grund, D.; Herman, T.; Horák, D.; Isakov, Artem; Kotliarov, Artem; Krupová, D. M.; Křížek, Filip; Křížková Gajdošová, K.; Kushpil, Svetlana; Lavička, R.; Petráček, V.; Šafařík, K.; Torres, S. R.; Závada, Petr

doi:https://dx.doi.org/10.1038/s41567-022-01804-8

Počet záznamů: 1

Measurement of anti-.sup.3./sup.He nuclei absorption in matter and impact on their propagation in the Galaxy

1.

SYSNO ASEP	0574104
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Measurement of anti-³He nuclei absorption in matter and impact on their propagation in the Galaxy
Tvůrce(i)	Acharya, S. (IN) Adamová, Dagmar (UJF-V)_{RID, ORCID, SAI} Adler, A. (DE) Adolfsson, J. (SE) Bielčík, J. (CZ) Bielčíková, Jana (UJF-V)_{RID, ORCID, SAI} Broz, M. (CZ) Contreras, J. G. (CZ) Fialová, V. (CZ) Grund, D. (CZ) Herman, T. (CZ) Horák, D. (CZ) Isakov, Artem (UJF-V)_{ORCID, SAI} Kotliarov, Artem (UJF-V)_{ORCID, SAI} Krupová, D. M. (CZ) Křížek, Filip (UJF-V)_{RID, ORCID, SAI} Křížková Gajdošová, K. (CZ) Kushpil, Svetlana (UJF-V)_{RID, ORCID, SAI} Lavička, R. (CZ) Petráček, V. (CZ) Šafařík, K. (CZ) Torres, S. R. (CZ) Závada, Petr (FZU-D)_{RID, ORCID}
Celkový počet autorů	1023
Zdroj.dok.	Nature Physics. - : Nature Publishing Group - ISSN 1745-2473 Roč. 19, č. 1 (2023), s. 61-71
Poč.str.	16 s.
Forma vydání	Tištěná - P
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	ALICE collaboration ; light antinuclei ; cross section
Obor OECD	Nuclear physics
Výzkumná infrastruktura	CERN-CZ III - 90240 - Fyzikální ústav AV ČR, v. v. i. CERN-CZ II - 90104 - Fyzikální ústav AV ČR, v. v. i.
Způsob publikování	Open access
Institucionální podpora	UJF-V - RVO:61389005 ; FZU-D - RVO:68378271
UT WOS	001031009800007
EID SCOPUS	85143911914
DOI	10.1038/s41567-022-01804-8
Anotace	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)(He) over bar 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 an input to the calculations of the transparency of our Galaxy to the propagation of (3)(He) over bar 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)(He) over bar momentum from 25% to 90% for cosmic-ray sources. The results indicate that (3)(He) over bar nuclei can travel long distances in the Galaxy, and can be used to study cosmic-ray interactions and dark-matter annihilation.
Pracoviště	Ústav jaderné fyziky
Kontakt	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Rok sběru	2024
Elektronická adresa	https://doi.org/10.1038/s41567-022-01804-8

Počet záznamů: 1