Muons in air showers at the Pierre Auger Observatory: mean number in highly inclined events

Aab, A.; Abreu, P.; Aglietta, M.; Boháčová, Martina; Chudoba, Jiří; Ebr, Jan; Mandát, Dušan; Nečesal, Petr; Palatka, Miroslav; Pech, Miroslav; Prouza, Michael; Řídký, Jan; Schovánek, Petr; Trávníček, Petr; Vícha, Jakub

doi:https://dx.doi.org/10.1103/PhysRevD.91.032003

Number of the records: 1

Muons in air showers at the Pierre Auger Observatory: mean number in highly inclined events

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SYSNO ASEP	0449907
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Muons in air showers at the Pierre Auger Observatory: mean number in highly inclined events
Author(s)	Aab, A. (DE) Abreu, P. (PT) Aglietta, M. (IT) Boháčová, Martina (FZU-D)_{RID, ORCID} Chudoba, Jiří (FZU-D)_{RID, ORCID} Ebr, Jan (FZU-D)_{RID, ORCID} Mandát, Dušan (FZU-D)_{RID, ORCID} Nečesal, Petr (FZU-D) Palatka, Miroslav (FZU-D)_{RID, ORCID, SAI} Pech, Miroslav (FZU-D)_{RID, ORCID} Prouza, Michael (FZU-D)_{RID, ORCID} Řídký, Jan (FZU-D)_{RID, ORCID} Schovánek, Petr (FZU-D)_{RID, ORCID} Trávníček, Petr (FZU-D)_{RID, ORCID} Vícha, Jakub (FZU-D)_{RID, ORCID}
Number of authors	480
Source Title	Physical Review D: Particles, Fields, Gravitation and Cosmology. - : American Physical Society - ISSN 1550-7998 Roč. 91, č. 3 (2015), , "032003-1"-"032003-12"
Number of pages	12 s.
Language	eng - English
Country	US - United States
Keywords	Pierre Auger Observatory ; air showers ; ultrahigh energies ; cosmic rays ; detector
Subject RIV	BF - Elementary Particles and High Energy Physics
R&D Projects	LG13007 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	7AMB14AR005 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	GA14-17501S GA ČR - Czech Science Foundation (CSF)
Institutional support	FZU-D - RVO:68378271
UT WOS	000349437800002
EID SCOPUS	84922570220
DOI	10.1103/PhysRevD.91.032003
Annotation	We present the first hybrid measurement of the average muon number in air showers at ultrahigh energies, initiated by cosmic rays with zenith angles between 62 degrees and 80 degrees. The measurement is based on 174 hybrid events recorded simultaneously with the surface detector array and the fluorescence detector of the Pierre Auger Observatory. The muon number for each shower is derived by scaling a simulated reference profile of the lateral muon density distribution at the ground until it fits the data. A 10(19) eV shower with a zenith angle of 67 degrees, which arrives at the surface detector array at an altitude of 1450 m above sea level, contains on average (2.68 +/- 0.04 +/- 0.48(sys)) x 10(7) muons with energies larger than 0.3 GeV. The logarithmic gain d lnN mu/d ln E of muons with increasing energy between 4 x 10(18) eV and 5 x 10(19) eV is measured to be (1.029 +/- 0.024) 0.030(sys)).
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2016

Number of the records: 1