Search for non-standard neutrino interactions with the first six detection units of KM3NeT/ORCA

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F25%3A00384164" target="_blank" >RIV/68407700:21670/25:00384164 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/1475-7516/2025/02/073" target="_blank" >https://doi.org/10.1088/1475-7516/2025/02/073</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1475-7516/2025/02/073" target="_blank" >10.1088/1475-7516/2025/02/073</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for non-standard neutrino interactions with the first six detection units of KM3NeT/ORCA

Popis výsledku v původním jazyce

KM3NeT/ORCA is an underwater neutrino telescope under construction in the Mediterranean Sea. Its primary scientific goal is to measure the atmospheric neutrino oscillation parameters and to determine the neutrino mass ordering. ORCA can constrain the oscillation parameters Δm 231 and θ 23 by reconstructing the arrival direction and energy of multi-GeV neutrinos crossing the Earth. Searches for deviations from the Standard Model of particle physics in the forward scattering of neutrinos inside Earth matter, produced by Non-Standard Interactions, can be conducted by investigating distortions of the standard oscillation pattern of neutrinos of all flavours. This work reports on the results of the search for non-standard neutrino interactions using the first six detection units of ORCA and 433 kton-years of exposure. No significant deviation from standard interactions was found in a sample of 5828 events reconstructed in the 1 GeV-1 TeV energy range. The flavour structure of the non-standard coupling was constrained at 90% confidence level to be |ϵμτ | <= 5.4 x 10-3, |ϵeτ | <= 7.4 x 10-2, |ϵeμ | <= 5.6 x 10-2 and -0.015 <= ϵττ - ϵμμ <= 0.017. The results are comparable to the current most stringent limits placed on the parameters by other experiments.

Název v anglickém jazyce

Search for non-standard neutrino interactions with the first six detection units of KM3NeT/ORCA

Popis výsledku anglicky

KM3NeT/ORCA is an underwater neutrino telescope under construction in the Mediterranean Sea. Its primary scientific goal is to measure the atmospheric neutrino oscillation parameters and to determine the neutrino mass ordering. ORCA can constrain the oscillation parameters Δm 231 and θ 23 by reconstructing the arrival direction and energy of multi-GeV neutrinos crossing the Earth. Searches for deviations from the Standard Model of particle physics in the forward scattering of neutrinos inside Earth matter, produced by Non-Standard Interactions, can be conducted by investigating distortions of the standard oscillation pattern of neutrinos of all flavours. This work reports on the results of the search for non-standard neutrino interactions using the first six detection units of ORCA and 433 kton-years of exposure. No significant deviation from standard interactions was found in a sample of 5828 events reconstructed in the 1 GeV-1 TeV energy range. The flavour structure of the non-standard coupling was constrained at 90% confidence level to be |ϵμτ | <= 5.4 x 10-3, |ϵeτ | <= 7.4 x 10-2, |ϵeμ | <= 5.6 x 10-2 and -0.015 <= ϵττ - ϵμμ <= 0.017. The results are comparable to the current most stringent limits placed on the parameters by other experiments.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GA24-12702S" target="_blank" >GA24-12702S: Experimentální a teoretický výzkum astrofyzikálních vysokoenergetických neutrin v neutrinovém teleskopu KM3NeT</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS

ISSN

1475-7516

e-ISSN

—

Svazek periodika

2025

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

31

Strana od-do

1-31

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-86000788020