Probing the PeV Region in the Astrophysical Neutrino Spectrum using $u_\mu$ from the Southern Sky

R Abbasi; M Ackermann; J Adams; S. K Agarwalla; J. A Aguilar; M Ahlers; J. M Alameddine; N. M Amin; K Andeen; C Argüelles; Y Ashida; S Athanasiadou; S. N Axani; R Babu; X Bai; A. Balagopal V; M Baricevic; S. W Barwick; S Bash; V Basu; R Bay; J. J Beatty; J. Becker Tjus; J Beise; C Bellenghi; S BenZvi; D Berley; E Bernardini; D. Z Besson; E Blaufuss; L Bloom; S Blot; F Bontempo; J. Y. Book Motzkin; C. Boscolo Meneguolo; S Böser; O Botner; J Böttcher; J Braun; B Brinson; Z Brisson-Tsavoussis; J Brostean-Kaiser; L Brusa; R. T Burley; D Butterfield; M. A Campana; I Caracas; K Carloni; J Carpio; S Chattopadhyay; N Chau; Z Chen; D Chirkin; S Choi; B. A Clark; A Coleman; P Coleman; G. H Collin; A Connolly; J. M Conrad; R Corley; D. F Cowen; C De Clercq; J. J DeLaunay; D Delgado; S Deng; A Desai; P Desiati; K. D de Vries; G de Wasseige; T DeYoung; J. C Díaz-Vélez; P Dierichs; S DiKerby; M Dittmer; A Domi; L Draper; H Dujmovic; D Durnford; K Dutta; M. A DuVernois; T Ehrhardt; L Eidenschink; A Eimer; P Eller; E Ellinger; S. El Mentawi; D Elsässer; R Engel; H Erpenbeck; W Esmail; J Evans; P. A Evenson; K. L Fan; K Fang; K Farrag; A. R Fazely; A Fedynitch; N Feigl; S Fiedlschuster; C Finley; L Fischer; D Fox; A Franckowiak; S Fukami; P Fürst; J Gallagher; E Ganster; A Garcia; M Garcia; G Garg; E Genton; L Gerhardt; A Ghadimi; C Girard-Carillo; C Glaser; T Glüsenkamp; J. G Gonzalez; S Goswami; A Granados; D Grant; S. J Gray; S Griffin; S Griswold; K. M Groth; D Guevel; C Günther; P Gutjahr; C Ha; C Haack; A Hallgren; L Halve; F Halzen; L Hamacher; H Hamdaoui; M. Ha Minh; M Handt; K Hanson; J Hardin; A. A Harnisch; P Hatch; A Haungs; J Häußler; K Helbing; J Hellrung; J Hermannsgabner; L Heuermann; N Heyer; S Hickford; A Hidvegi; C Hill; G. C Hill; R Hmaid; K. D Hoffman; S Hori; K Hoshina; M Hostert; W Hou; T Huber; K Hultqvist; M Hünnefeld; R Hussain; K Hymon; A Ishihara; W Iwakiri; M Jacquart; S Jain; O Janik; M Jansson; M Jeong; M Jin; B. J. P Jones; N Kamp; D Kang; W Kang; X Kang; A Kappes; D Kappesser; L Kardum; T Karg; M Karl; A Karle; A Katil; U Katz; M Kauer; J. L Kelley; M Khanal; A. Khatee Zathul; A Kheirandish; J Kiryluk; S. R Klein; Y Kobayashi; A Kochocki; R Koirala; H Kolanoski; T Kontrimas; L Köpke; C Kopper; D. J Koskinen; P Koundal; M Kowalski; T Kozynets; N Krieger; J Krishnamoorthi; T Krishnan; K Kruiswijk; E Krupczak; A Kumar; E Kun; N Kurahashi; N Lad; C. Lagunas Gualda; M Lamoureux; M. J Larson; F Lauber; J. P Lazar; K. Leonard DeHolton; A Leszczyńska; J Liao; M Lincetto; Y. T Liu; M Liubarska; C Love; L Lu; F Lucarelli; W Luszczak; Y Lyu; J Madsen; E Magnus; K. B. M Mahn; Y Makino; E Manao; S Mancina; A Mand; W. Marie Sainte; I. C Mariş; S Marka; Z Marka; M Marsee; I Martinez-Soler; R Maruyama; F Mayhew; F McNally; J. V Mead; K Meagher; S Mechbal; A Medina; M Meier; Y Merckx; L Merten; J Mitchell; L Molchany; T Montaruli; R. W Moore; Y Morii; R Morse; M Moulai; T Mukherjee; R Naab; M Nakos; U Naumann; J Necker; A Negi; L Neste; M Neumann; H Niederhausen; M. U Nisa; K Noda; A Noell; A Novikov; A. Obertacke Pollmann; V O'Dell; A Olivas; R Orsoe; J Osborn; E O'Sullivan; V Palusova; H Pandya; N Park; G. K Parker; V Parrish; E. N Paudel; L Paul; C. Pérez de los Heros; T Pernice; J Peterson; A Pizzuto; M Plum; A Pontén; Y Popovych; M. Prado Rodriguez; B Pries; R Procter-Murphy; G. T Przybylski; L Pyras; C Raab; J Rack-Helleis; N Rad; M Ravn; K Rawlins; Z Rechav; A Rehman; I Reistroffer; E Resconi; S Reusch; W Rhode; B Riedel; A Rifaie; E. J Roberts; S Robertson; S Rodan; M Rongen; A Rosted; C Rott; T Ruhe; L Ruohan; I Safa; J Saffer; D Salazar-Gallegos; P Sampathkumar; A Sandrock; M Santander; S Sarkar; J Savelberg; P Savina; P Schaile; M Schaufel; H Schieler; S Schindler; L Schlickmann; B Schlüter; F Schlüter; N Schmeisser; T Schmidt; J Schneider; F. G Schröder; L Schumacher; S Schwirn; S Sclafani; D Seckel; L Seen; M Seikh; M Seo; S Seunarine; P. A. Sevle Myhr; R Shah; S Shefali; N Shimizu; M Silva; B Skrzypek; B Smithers; R Snihur; J Soedingrekso; A Søgaard; D Soldin; P Soldin; G Sommani; C Spannfellner; G. M Spiczak; C Spiering; J Stachurska; M Stamatikos; T Stanev; T Stezelberger; T Stürwald; T Stuttard; G. W Sullivan; I Taboada; S Ter-Antonyan; A Terliuk; A Thakuri; M Thiesmeyer; W. G Thompson; J Thwaites; S Tilav; K Tollefson; C Tönnis; S Toscano; D Tosi; A Trettin; M. A. Unland Elorrieta; A. K Upadhyay; K Upshaw; A Vaidyanathan; N Valtonen-Mattila; J Vandenbroucke; N van Eijndhoven; D Vannerom; J van Santen; J Vara; F Varsi; J Veitch-Michaelis; M Venugopal; M Vereecken; S. Vergara Carrasco; S Verpoest; D Veske; A Vijai; C Walck; A Wang; C Weaver; P Weigel; A Weindl; J Weldert; A. Y Wen; C Wendt; J Werthebach; M Weyrauch; N Whitehorn; C. H Wiebusch; D. R Williams; L Witthaus; M Wolf; G Wrede; X. W Xu; J. P Yanez; E Yildizci; S Yoshida; R Young; F Yu; S Yu; T Yuan; A Zegarelli; S Zhang; Z Zhang; P Zhelnin; P Zilberman; M Zimmerman

doi:10.48550/arxiv.2502.19776

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$Probing the PeV Region in the Astrophysical Neutrino Spectrum using $u_\mu$ from the Southern Sky$

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Probing the PeV Region in the Astrophysical Neutrino Spectrum using $u_\mu$ from the Southern Sky

R Abbasi, M Ackermann, J Adams, S. K Agarwalla, J. A Aguilar, M Ahlers, J. M Alameddine, N. M Amin, K Andeen, C Argüelles, …

27 Feb 2025

DOI: https://doi.org/10.48550/arxiv.2502.19776

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Abstract

Physics - High Energy Astrophysical Phenomena

IceCube has observed a diffuse astrophysical neutrino flux over the energy region from a few TeV to a few PeV. At PeV energies, the spectral shape is not yet well measured due to the low statistics of the data. This analysis probes the gap between 1 PeV and 10 PeV by using high-energy downgoing muon neutrinos. To reject the large atmospheric muon background, two complementary techniques are combined. The first technique selects events with high stochasticity to reject atmospheric muon bundles whose stochastic energy losses are smoothed due to high muon multiplicity. The second technique vetoes atmospheric muons with the IceTop surface array. Using 9 years of data, we found two neutrino candidate events in the signal region, consistent with expectation from background, each with relatively high signal probabilities. A joint maximum likelihood estimation is performed using this sample and an independent 9.5-year sample of tracks to measure the neutrino spectrum. A likelihood ratio test is done to compare the single power-law (SPL) vs. SPL+cutoff hypothesis; the SPL+cutoff model is not significantly better than the SPL. High-energy astrophysical objects from four source catalogs are also checked around the direction of the two events. No significant coincidence was found.

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Title: Probing the PeV Region in the Astrophysical Neutrino Spectrum using $u_\mu$ from the Southern Sky
Creators: R Abbasi
M Ackermann
J Adams
S. K Agarwalla
J. A Aguilar
M Ahlers
J. M Alameddine
N. M Amin
K Andeen
C Argüelles
Y Ashida
S Athanasiadou
S. N Axani
R Babu
X Bai
A. Balagopal V
M Baricevic
S. W Barwick
S Bash
V Basu
R Bay
J. J Beatty
J. Becker Tjus
J Beise
C Bellenghi
S BenZvi
D Berley
E Bernardini
D. Z Besson
E Blaufuss
L Bloom
S Blot
F Bontempo
J. Y. Book Motzkin
C. Boscolo Meneguolo
S Böser
O Botner
J Böttcher
J Braun
B Brinson
Z Brisson-Tsavoussis
J Brostean-Kaiser
L Brusa
R. T Burley
D Butterfield
M. A Campana
I Caracas
K Carloni
J Carpio
S Chattopadhyay
N Chau
Z Chen
D Chirkin
S Choi
B. A Clark
A Coleman
P Coleman
G. H Collin
A Connolly
J. M Conrad
R Corley
D. F Cowen
C De Clercq
J. J DeLaunay
D Delgado
S Deng
A Desai
P Desiati
K. D de Vries
G de Wasseige
T DeYoung
J. C Díaz-Vélez
P Dierichs
S DiKerby
M Dittmer
A Domi
L Draper
H Dujmovic
D Durnford
K Dutta
M. A DuVernois
T Ehrhardt
L Eidenschink
A Eimer
P Eller
E Ellinger
S. El Mentawi
D Elsässer
R Engel
H Erpenbeck
W Esmail
J Evans
P. A Evenson
K. L Fan
K Fang
K Farrag
A. R Fazely
A Fedynitch
N Feigl
S Fiedlschuster
C Finley
L Fischer
D Fox
A Franckowiak
S Fukami
P Fürst
J Gallagher
E Ganster
A Garcia
M Garcia
G Garg
E Genton
L Gerhardt
A Ghadimi
C Girard-Carillo
C Glaser
T Glüsenkamp
J. G Gonzalez
S Goswami
A Granados
D Grant
S. J Gray
S Griffin
S Griswold
K. M Groth
D Guevel
C Günther
P Gutjahr
C Ha
C Haack
A Hallgren
L Halve
F Halzen
L Hamacher
H Hamdaoui
M. Ha Minh
M Handt
K Hanson
J Hardin
A. A Harnisch
P Hatch
A Haungs
J Häußler
K Helbing
J Hellrung
J Hermannsgabner
L Heuermann
N Heyer
S Hickford
A Hidvegi
C Hill
G. C Hill
R Hmaid
K. D Hoffman
S Hori
K Hoshina
M Hostert
W Hou
T Huber
K Hultqvist
M Hünnefeld
R Hussain
K Hymon
A Ishihara
W Iwakiri
M Jacquart
S Jain
O Janik
M Jansson
M Jeong
M Jin
B. J. P Jones
N Kamp
D Kang
W Kang
X Kang
A Kappes
D Kappesser
L Kardum
T Karg
M Karl
A Karle
A Katil
U Katz
M Kauer
J. L Kelley
M Khanal
A. Khatee Zathul
A Kheirandish
J Kiryluk
S. R Klein
Y Kobayashi
A Kochocki
R Koirala
H Kolanoski
T Kontrimas
L Köpke
C Kopper
D. J Koskinen
P Koundal
M Kowalski
T Kozynets
N Krieger
J Krishnamoorthi
T Krishnan
K Kruiswijk
E Krupczak
A Kumar
E Kun
N Kurahashi
N Lad
C. Lagunas Gualda
M Lamoureux
M. J Larson
F Lauber
J. P Lazar
K. Leonard DeHolton
A Leszczyńska
J Liao
M Lincetto
Y. T Liu
M Liubarska
C Love
L Lu
F Lucarelli
W Luszczak
Y Lyu
J Madsen
E Magnus
K. B. M Mahn
Y Makino
E Manao
S Mancina
A Mand
W. Marie Sainte
I. C Mariş
S Marka
Z Marka
M Marsee
I Martinez-Soler
R Maruyama
F Mayhew
F McNally
J. V Mead
K Meagher
S Mechbal
A Medina
M Meier
Y Merckx
L Merten
J Mitchell
L Molchany
T Montaruli
R. W Moore
Y Morii
R Morse
M Moulai
T Mukherjee
R Naab
M Nakos
U Naumann
J Necker
A Negi
L Neste
M Neumann
H Niederhausen
M. U Nisa
K Noda
A Noell
A Novikov
A. Obertacke Pollmann
V O'Dell
A Olivas
R Orsoe
J Osborn
E O'Sullivan
V Palusova
H Pandya
N Park
G. K Parker
V Parrish
E. N Paudel
L Paul
C. Pérez de los Heros
T Pernice
J Peterson
A Pizzuto
M Plum
A Pontén
Y Popovych
M. Prado Rodriguez
B Pries
R Procter-Murphy
G. T Przybylski
L Pyras
C Raab
J Rack-Helleis
N Rad
M Ravn
K Rawlins
Z Rechav
A Rehman
I Reistroffer
E Resconi
S Reusch
W Rhode
B Riedel
A Rifaie
E. J Roberts
S Robertson
S Rodan
M Rongen
A Rosted
C Rott
T Ruhe
L Ruohan
I Safa
J Saffer
D Salazar-Gallegos
P Sampathkumar
A Sandrock
M Santander
S Sarkar
J Savelberg
P Savina
P Schaile
M Schaufel
H Schieler
S Schindler
L Schlickmann
B Schlüter
F Schlüter
N Schmeisser
T Schmidt
J Schneider
F. G Schröder
L Schumacher
S Schwirn
S Sclafani
D Seckel
L Seen
M Seikh
M Seo
S Seunarine
P. A. Sevle Myhr
R Shah
S Shefali
N Shimizu
M Silva
B Skrzypek
B Smithers
R Snihur
J Soedingrekso
A Søgaard
D Soldin
P Soldin
G Sommani
C Spannfellner
G. M Spiczak
C Spiering
J Stachurska
M Stamatikos
T Stanev
T Stezelberger
T Stürwald
T Stuttard
G. W Sullivan
I Taboada
S Ter-Antonyan
A Terliuk
A Thakuri
M Thiesmeyer
W. G Thompson
J Thwaites
S Tilav
K Tollefson
C Tönnis
S Toscano
D Tosi
A Trettin
M. A. Unland Elorrieta
A. K Upadhyay
K Upshaw
A Vaidyanathan
N Valtonen-Mattila
J Vandenbroucke
N van Eijndhoven
D Vannerom
J van Santen
J Vara
F Varsi
J Veitch-Michaelis
M Venugopal
M Vereecken
S. Vergara Carrasco
S Verpoest
D Veske
A Vijai
C Walck
A Wang
C Weaver
P Weigel
A Weindl
J Weldert
A. Y Wen
C Wendt
J Werthebach
M Weyrauch
N Whitehorn
C. H Wiebusch
D. R Williams
L Witthaus
M Wolf
G Wrede
X. W Xu
J. P Yanez
E Yildizci
S Yoshida
R Young
F Yu
S Yu
T Yuan
A Zegarelli
S Zhang
Z Zhang
P Zhelnin
P Zilberman
M Zimmerman
Resource Type: Preprint
Language: English
Academic Unit: Physics
Other Identifier: 991022032170604721

Probing the PeV Region in the Astrophysical Neutrino Spectrum using $u_\mu$ from the Southern Sky

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