Search for dark matter towards the Sun with the KM3NeT/ORCA6 neutrino telescope

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F24%3A00389344" target="_blank" >RIV/68407700:21670/24:00389344 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.22323/1.444.1406" target="_blank" >https://doi.org/10.22323/1.444.1406</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22323/1.444.1406" target="_blank" >10.22323/1.444.1406</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for dark matter towards the Sun with the KM3NeT/ORCA6 neutrino telescope

Popis výsledku v původním jazyce

Dark matter is acknowledged to exist at different scales in the Universe. Cosmological observations strongly suggest that approximately 25% of the overall energy density of the Universe is attributed to dark matter, while roughly 5% is composed of baryonic matter. Since the neutrinos produced in pair-annihilation or decay of weakly interacting massive particles (WIMPs) could be observed by neutrino telescopes, these instruments provide an important complementarity in the quest for detecting dark matter signals. An excess of signal could be observed in regions where dark matter might accumulate, e.g., the Sun. The KM3NeT telescope is composed of two detectors, namely, ARCA (Astroparticle Research with Cosmics in the Abyss) and ORCA (Oscillation Research with Cosmics in the Abyss). The energy threshold of the latter is ~ 1 GeV. Given the fact that neutrinos above 1 TeV are typically absorbed before they can escape from the Sun, the energy range of the KM3NeT/ORCA detector is optimal for the search of dark matter signals coming from our star. In this contribution, the search for WIMP annihilation signals coming from the Sun is presented. An unbinned likelihood method is used to discriminate the signal from the background in a 543-day livetime sample of data collected with the 6 first detection units of the ORCA detector. The limits on the neutrino flux and on the spin-dependent and spin-independent cross sections are given for three different annihilation channels. No evidence for a dark matter signal over the expected background has been found.

Název v anglickém jazyce

Search for dark matter towards the Sun with the KM3NeT/ORCA6 neutrino telescope

Popis výsledku anglicky

Dark matter is acknowledged to exist at different scales in the Universe. Cosmological observations strongly suggest that approximately 25% of the overall energy density of the Universe is attributed to dark matter, while roughly 5% is composed of baryonic matter. Since the neutrinos produced in pair-annihilation or decay of weakly interacting massive particles (WIMPs) could be observed by neutrino telescopes, these instruments provide an important complementarity in the quest for detecting dark matter signals. An excess of signal could be observed in regions where dark matter might accumulate, e.g., the Sun. The KM3NeT telescope is composed of two detectors, namely, ARCA (Astroparticle Research with Cosmics in the Abyss) and ORCA (Oscillation Research with Cosmics in the Abyss). The energy threshold of the latter is ~ 1 GeV. Given the fact that neutrinos above 1 TeV are typically absorbed before they can escape from the Sun, the energy range of the KM3NeT/ORCA detector is optimal for the search of dark matter signals coming from our star. In this contribution, the search for WIMP annihilation signals coming from the Sun is presented. An unbinned likelihood method is used to discriminate the signal from the background in a 543-day livetime sample of data collected with the 6 first detection units of the ORCA detector. The limits on the neutrino flux and on the spin-dependent and spin-independent cross sections are given for three different annihilation channels. No evidence for a dark matter signal over the expected background has been found.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/LM2023063" target="_blank" >LM2023063: Podzemní laboratoř LSM - účast České republiky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

38th International Cosmic Ray Conference (ICRC2023)

ISBN

—

ISSN

1824-8039

e-ISSN

1824-8039

Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

PoS - Proceedings of Science, Sissa Medialab srl

Místo vydání

Trieste

Místo konání akce

Nagoya

Datum konání akce

26. 7. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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