Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00641313" target="_blank" >RIV/68378271:_____/25:00641313 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0376917" target="_blank" >https://hdl.handle.net/11104/0376917</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/w9pk-xsk7" target="_blank" >10.1103/w9pk-xsk7</a>
Alternative languages
Result language
angličtina
Original language name
Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
Original language description
The Dark Energy Spectroscopic Instrument (DESI) Collaboration has obtained robust measurements of baryon acoustic oscillations in the redshift range 0.1 < z <4.2, based on the Lyman-alpha forest and galaxies from data release 2. We combine these measurements with cosmic microwave background (CMB) data from Planck and the Atacama Cosmology Telescope to place our tightest constraints yet on the sum of neutrino masses. Assuming the cosmological ACDM model and three degenerate neutrino states, we find Sigma m(nu) <0.0642 eV (95%) with a marginalized error of sigma(Sigma m(nu)) = 0.020 eV. We also constrain the effective number of neutrino species, finding N-eff = 3.23 (+0.35)(-0.34) (95%), in line with the Standard Model prediction. When accounting for neutrino oscillation constraints, we find a preference for the normal mass ordering and an upper limit on the lightest neutrino mass of m(l) <0.023 eV (95%). However, we determine using frequentist and Bayesian methods that our constraints are in tension with the lower limits derived from neutrino oscillations.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
<a href="/en/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Fundamental constituents of matter through frontier technologies</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
112
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
33
Pages from-to
083513
UT code for WoS article
001600962200002
EID of the result in the Scopus database
2-s2.0-105026355769