Can one measure the Cosmic Neutrino Background?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F17%3A00309679" target="_blank" >RIV/68407700:21670/17:00309679 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1142/S0218301317400080" target="_blank" >http://dx.doi.org/10.1142/S0218301317400080</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/S0218301317400080" target="_blank" >10.1142/S0218301317400080</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Can one measure the Cosmic Neutrino Background?

Popis výsledku v původním jazyce

The Cosmic Microwave Background (CMB) yields information about our Universe at around 380,000 years after the Big Bang (BB). Due to the weak interaction of the neutrinos with matter, the Cosmic Neutrino Background (CNB) should give information about a much earlier time of our Universe, around one second after the BB. Probably, the most promising method to see the CNB is the capture of the electron neutrinos from the Background by Tritium, which then decays into ³He and an electron with the energy of the the Q-value = 18.562keV plus the electron neutrino rest mass. The KArlsruhe TRItium Neutrino (KATRIN) experiment, which is in preparation, seems presently the most sensitive proposed method for measuring the electron antineutrino mass. At the same time, KATRIN can also look by the reaction e(1.95K) +3H ³He + e-(Q = 18.6keV + m ec2). The capture of the Cosmic Background Neutrinos (CNB) should show in the electron spectrum as a peak by the electron neutrino rest mass above Q. Here, the possibility to see the CNB with KATRIN is studied. A detection of the CNB by KATRIN seems not to be possible at the moment. But KATRIN should be able to determine an upper limit for the local electron neutrino density of the CNB.

Název v anglickém jazyce

Can one measure the Cosmic Neutrino Background?

Popis výsledku anglicky

The Cosmic Microwave Background (CMB) yields information about our Universe at around 380,000 years after the Big Bang (BB). Due to the weak interaction of the neutrinos with matter, the Cosmic Neutrino Background (CNB) should give information about a much earlier time of our Universe, around one second after the BB. Probably, the most promising method to see the CNB is the capture of the electron neutrinos from the Background by Tritium, which then decays into ³He and an electron with the energy of the the Q-value = 18.562keV plus the electron neutrino rest mass. The KArlsruhe TRItium Neutrino (KATRIN) experiment, which is in preparation, seems presently the most sensitive proposed method for measuring the electron antineutrino mass. At the same time, KATRIN can also look by the reaction e(1.95K) +3H ³He + e-(Q = 18.6keV + m ec2). The capture of the Cosmic Background Neutrinos (CNB) should show in the electron spectrum as a peak by the electron neutrino rest mass above Q. Here, the possibility to see the CNB with KATRIN is studied. A detection of the CNB by KATRIN seems not to be possible at the moment. But KATRIN should be able to determine an upper limit for the local electron neutrino density of the CNB.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

<a href="/cs/project/LM2015072" target="_blank" >LM2015072: Podzemní laboratoř LSM – účast České republiky</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

International Journal of Modern Physics E

ISSN

0218-3013

e-ISSN

1793-6608

Svazek periodika

26

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

SG - Singapurská republika

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

000395110800011

EID výsledku v databázi Scopus

2-s2.0-85010842193