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Abstract:

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° and 80°. 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 1019eV shower with a zenith angle of 67°, 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))×107 muons with energies larger than 0.3 GeV. The logarithmic gain dlnNμ/dlnE of muons with increasing energy between 4×1018eV and 5×1019eV is measured to be (1.029±0.024±0.030(sys)). © 2015 American Physical Society.

Registro:

Documento: Artículo
Título:Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events
Autor:Multitudinario:480
Filiación:Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF, CONICET, Argentina
Departamento de Física, FCEyN, Universidad de Buenos Aires y CONICET, Argentina
IFLP, Universidad Nacional de la Plata, CONICET, La Plata, Argentina
Instituto de Astronomía y Física Del Espacio (CONICET-UBA), Buenos Aires, Argentina
Instituto de Física de Rosario (IFIR), CONICET/U.N.R., Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), National Technological University, Faculty Mendoza (CONICET/CNEA), Mendoza, Argentina
Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina
Observatorio Pierre Auger, Malargüe, Argentina
Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina
Universidad Tecnológica Nacional, Facultad Regional Buenos Aires, Buenos Aires, Argentina
University of Adelaide, Adelaide, S.A., Australia
Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, RJ, Brazil
Faculdade Independente Do Nordeste, Vitória da Conquista, Brazil
Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, SP, Brazil
Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, SP, Brazil
Universidade de São Paulo, Instituto de Física, São Paulo, SP, Brazil
Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
Universidade Estadual de Feira de Santana, Brazil
Universidade Federal da Bahia, Salvador, BA, Brazil
Universidade Federal de Pelotas, Pelotas, RS, Brazil
Universidade Federal Do ABC, Santo-André, SP, Brazil
Universidade Federal Do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil
Universidade Federal Fluminense, EEIMVR, Volta Redonda, RJ, Brazil
Rudjer Bošković Institute, Zagreb, 10000, Croatia
Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
Palacky University, RCPTM, Olomouc, Czech Republic
Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris 11, CNRS-IN2P3, Orsay, France
Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris 11, CNRS-IN2P3, France
Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, Paris, France
Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, France
Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, France
SUBATECH, École des Mines de Nantes, Université de Nantes, France
Bergische Universität Wuppertal, Wuppertal, Germany
Karlsruhe Institute of Technology, Campus South - Institut für Experimentelle Kernphysik (IEKP), Karlsruhe, Germany
Karlsruhe Institute of Technology, Campus North - Institut für Kernphysik, Karlsruhe, Germany
Karlsruhe Institute of Technology, Campus North - Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
Max-Planck-Institut für Radioastronomie, Bonn, Germany
RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
Universität Hamburg, Hamburg, Germany
Universität Siegen, Siegen, Germany
Università di Milano, Sezione INFN, Milan, Italy
Università di Napoli Federico II, Sezione INFN, Napoli, Italy
Università di Roma II Tor Vergata, Sezione INFN, Rome, Italy
Università di Catania, Sezione INFN, Catania, Italy
Università di Torino, Sezione INFN, Torino, Italy
Dipartimento di Matematica e Fisica E. de Giorgi, Università Del Salento, Sezione INFN, Lecce, Italy
Dipartimento di Scienze Fisiche e Chimiche, Università dell'Aquila, INFN, Italy
Gran Sasso Science Institute (INFN), L'Aquila, Italy
Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
INFN, Laboratori Nazionali Del Gran Sasso, Assergi (l'Aquila), Italy
Osservatorio Astrofisico di Torino (INAF), Università di Torino, Sezione INFN, Torino, Italy
Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
Centro de Investigación y de Estudios Avanzados Del IPN (CINVESTAV), México, Mexico
Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Michoacan, Mexico
Universidad Nacional Autonoma de Mexico, Mexico, D.F., Mexico
IMAPP, Radboud University Nijmegen, Netherlands
KVI - Center for Advanced Radiation Technology, University of Groningen, Netherlands
Nikhef, Science Park, Amsterdam, Netherlands
ASTRON, Dwingeloo, Netherlands
Institute of Nuclear Physics PAN, Krakow, Poland
University of Łódź, Łódź, Poland
Laboratorio de Instrumentacao e Fisica Experimental de Particulas - LIP, Instituto Superior Técnico - IST, Universidade de Lisboa - UL, Portugal
'Horia Hulubei' National Institute for Physics and Nuclear Engineering, Bucharest- Magurele, Romania
Institute of Space Sciences, Bucharest, Romania
University of Bucharest, Physics Department, Romania
University Politehnica of Bucharest, Romania
Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
Laboratory for Astroparticle Physics, University of Nova Gorica, Slovenia
Universidad Complutense de Madrid, Madrid, Spain
Universidad de Alcalá, Alcalá de Henares (Madrid), Spain
Universidad de Granada, C.A.F.P.E., Granada, Spain
Universidad de Santiago de Compostela, Spain
School of Physics and Astronomy, University of Leeds, United Kingdom
Case Western Reserve University, Cleveland, OH 44106, United States
Colorado School of Mines, Golden, CO 80401, United States
Colorado State University, Fort Collins, CO 80523, United States
Colorado State University, Pueblo, CO 81001, United States
Department of Physics and Astronomy, Lehman College, City University of New York, New York, NY 10468, United States
Fermilab, Batavia, IL 60510-0500, United States
Los Alamos National Laboratory, Los Alamos, NM 87545, United States
Louisiana State University, Baton Rouge, LA 70803-4001, United States
Michigan Technological University, Houghton, MI 49931-1295, United States
New York University, New York, NY 10003, United States
Northeastern University, Boston, MA 02115-5096, United States
Ohio State University, Columbus, OH 43210-1061, United States
Pennsylvania State University, University Park, PA 16802-6300, United States
University of Chicago, Enrico Fermi Institute, Chicago, IL 60637, United States
University of Hawaii, Honolulu, HI 96822, United States
University of Nebraska, Lincoln, NE 68588-0111, United States
University of New Mexico, Albuquerque, NM 87131, United States
University of Wisconsin, Milwaukee, WI 53201, United States
Año:2015
Volumen:91
Número:3
DOI: http://dx.doi.org/10.1103/PhysRevD.91.032003
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v91_n3_p_Multitudinario

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Citas:

---------- APA ----------
(2015) . Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events. Physical Review D - Particles, Fields, Gravitation and Cosmology, 91(3).
http://dx.doi.org/10.1103/PhysRevD.91.032003
---------- CHICAGO ----------
Multitudinario:480. "Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events" . Physical Review D - Particles, Fields, Gravitation and Cosmology 91, no. 3 (2015).
http://dx.doi.org/10.1103/PhysRevD.91.032003
---------- MLA ----------
Multitudinario:480. "Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 91, no. 3, 2015.
http://dx.doi.org/10.1103/PhysRevD.91.032003
---------- VANCOUVER ----------
Multitudinario:480. Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events. Phys Rev D Part Fields Gravit Cosmol. 2015;91(3).
http://dx.doi.org/10.1103/PhysRevD.91.032003