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Title: Data-driven estimation of the invisible energy of cosmic ray showers with the Pierre Auger Observatory

Journal Article · · Physical Review D
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The determination of the primary energy of extensive air showers using the fluorescence detection technique requires an estimation of the energy carried away by particles that do not deposit all their energy in the atmosphere. This estimation is typically made using Monte Carlo simulations and thus depends on the assumed primary particle mass and on model predictions for neutrino and muon production. In this work we present a new method to obtain the invisible energy from events detected by the Pierre Auger Observatory. Here, the method uses measurements of the muon number at ground level, and it allows us to reduce significantly the systematic uncertainties related to the mass composition and the high energy hadronic interaction models, and consequently to improve the estimation of the energy scale of the Observatory.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
The Pierre Auger Collaboration
Grant/Contract Number:
AC02-07CH11359; FR02-04ER41300; FG02-99ER41107; SC0011689
OSTI ID:
1558447
Alternate ID(s):
OSTI ID: 1572103
Report Number(s):
arXiv:1901.08040; FERMILAB-PUB-19-040-ND-PPD-TD; PRVDAQ; oai:inspirehep.net:1716619
Journal Information:
Physical Review D, Vol. 100, Issue 8; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (14)