| Title: |
Evidence for a Spectral Break or Curvature in the Spectrum of Astrophysical Neutrinos from 5 TeV to 10 PeV |
| Authors: |
Abbasi, R; Ackermann, M; Adams, J; Agarwalla, SK; Aguilar, JA; Ahlers, M; Alameddine, JM; Ali, S; Amin, NM; Andeen, K; Arguelles, C; Ashida, Y; Athanasiadou, S; Axani, SN; Babu, R; Bai, X; Baines-Holmes, J; V., A Balagopal; Barwick, SW; Bash, S; Basu, V; Bay, R; Beatty, JJ; Tjus, J Becker; Behrens, P; Beise, J; Bellenghi, C; Benkel, B; BenZvi, S; Berley, D; Bernardini, E; Besson, DZ; Blaufuss, E; Bloom, L; Blot, S; Bodo, I; Bontempo, F; Motzkin, JY Book; Meneguolo, C Boscolo; Boser, S; Botner, O; Bottcher, J; Braun, J; Brinson, B; Brisson-Tsavoussis, Z; Burley, RT; Butterfield, D; Campana, MA; Carloni, K; Carpio, J; Chattopadhyay, S; Chau, N; Chen, Z; Chirkin, D; Choi, S; Clark, BA; Coleman, A; Coleman, P; Collin, GH; Borja, DA Coloma; Connolly, A; Conrad, JM; Corley, R; Cowen, DF; De Clercq, C; DeLaunay, JJ; Delgado, D; Delmeulle, T; Deng, S; Desiati, P; de Vries, KD; de Wasseige, G; DeYoung, T; Diaz-Velez, JC; DiKerby, S; Dittmer, M; Domi, A; Draper, L; Dueser, L; Durnford, D; Dutta, K; DuVernois, MA; Ehrhardt, T; Eidenschink, L; Eimer, A; Eller, P; Ellinger, E; Elsasser, D; Engel, R; Erpenbeck, H; Esmail, W; Eulig, S; Evans, J; Evenson, PA; Fan, KL; Fang, K; Farrag, K; Fazely, AR; Fedynitch, A; Feigl, N |
| Source: |
Physical Review Letters, vol 136, iss 12 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2026 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
IceCube Collaboration; 01 Mathematical Sciences (for); 02 Physical Sciences (for); 09 Engineering (for); General Physics (science-metrix); 40 Engineering (for-2020); 49 Mathematical sciences (for-2020); 51 Physical sciences (for-2020) |
| Description: |
We report improved measurements of the all flavor astrophysical neutrino spectrum with IceCube by combining complementary neutrino samples in two independent analyses. Both analyses show evidence of a harder spectrum at energies below ∼30 TeV compared to higher energies where the spectrum is well characterized by a power law. The spectrum is better described by a log parabola or a broken power law, thelatter being the preferred model. Both, however, reject a single power law over an energy range 5TeV-10PeV with a significance >4σ, providing new constraints on properties of cosmic neutrino sources. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
qt0rz293xt; https://escholarship.org/uc/item/0rz293xt; https://escholarship.org/content/qt0rz293xt/qt0rz293xt.pdf |
| DOI: |
10.1103/2gh9-d4q7 |
| Availability: |
https://escholarship.org/uc/item/0rz293xt; https://escholarship.org/content/qt0rz293xt/qt0rz293xt.pdf; https://doi.org/10.1103/2gh9-d4q7 |
| Rights: |
CC-BY |
| Accession Number: |
edsbas.B6149BE4 |
| Database: |
BASE |