Publication:
IceCube high-energy starting event sample: Description and flux characterization with 7.5 years of data ICECUBE HIGH-ENERGY STARTING EVENT SAMPLE: ... ABBASI R. et al.

Дата
2021
Авторы
Abbasi, R.
Ackermann, M.
Adams, J.
Aguilar, J. A.
Besson, D. Z.
Spiering, C.
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Научные группы
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
Выпуск журнала
Аннотация
© 2021 American Physical Society.The IceCube Neutrino Observatory has established the existence of a high-energy all-sky neutrino flux of astrophysical origin. This discovery was made using events interacting within a fiducial region of the detector surrounded by an active veto and with reconstructed energy above 60 TeV, commonly known as the high-energy starting event sample (HESE). We revisit the analysis of the HESE sample with an additional 4.5 years of data, newer glacial ice models, and improved systematics treatment. This paper describes the sample in detail, reports on the latest astrophysical neutrino flux measurements, and presents a source search for astrophysical neutrinos. We give the compatibility of these observations with specific isotropic flux models proposed in the literature as well as generic power-law-like scenarios. Assuming νe:νμ:ντ=1:1:1, and an equal flux of neutrinos and antineutrinos, we find that the astrophysical neutrino spectrum is compatible with an unbroken power law, with a preferred spectral index of 2.87-0.19+0.20 for the 68% confidence interval.
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IceCube high-energy starting event sample: Description and flux characterization with 7.5 years of data ICECUBE HIGH-ENERGY STARTING EVENT SAMPLE: ... ABBASI R. et al. / Abbasi, R. [et al.] // Physical Review D. - 2021. - 104. - № 2. - 10.1103/PhysRevD.104.022002
URI
https://www.doi.org/10.1103/PhysRevD.104.022002
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85110598861&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000671589000002
 https://openrepository.mephi.ru/handle/123456789/24352
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