Measurement of the Fluctuations in the Number of Muons in Extensive Air Showers with the Pierre Auger Observatory.

Aab, A; Abreu, P; Aglietta, M; Albury, J M; Allekotte, I; Almela, A; Alvarez-Muñiz, J; Alves Batista, R; Anastasi, G A; Anchordoqui, L; Andrada, B; Andringa, S; Aramo, C; Araújo Ferreira, P R; Asorey, H; Assis, P; Avila, G; Badescu, A M; Bakalova, A; Balaceanu, A; Barbato, F; Barreira Luz, R J; Becker, K H; Bellido, J A; Berat, C; Bertaina, M E; Bertou, X; Biermann, P L; Bister, T; Biteau, J; Blazek, J; Bleve, C; Bohácová, M; Boncioli, D; Bonifazi, C; Bonneau Arbeletche, L; Borodai, N; Botti, A M; Brack, J; Bretz, T; Briechle, F L; Buchholz, P; Bueno, A; Buitink, S; Buscemi, M; Caballero-Mora, K S; Caccianiga, L; Cancio, A; Canfora, F; Caracas, I

Aab, A; Abreu, P; Aglietta, M; Albury, J M; Allekotte, I; Almela, A; Alvarez-Muñiz, J; Alves Batista, R; Anastasi, G A; Anchordoqui, L; Andrada, B; Andringa, S; Aramo, C; Araújo Ferreira, P R; Asorey, H; Assis, P; Avila, G; Badescu, A M; Bakalova, A; Balaceanu, A; Barbato, F; Barreira Luz, R J; Becker, K H; Bellido, J A; Berat, C; Bertaina, M E; Bertou, X; Biermann, P L; Bister, T; Biteau, J; Blazek, J; Bleve, C; Bohácová, M; Boncioli, D; Bonifazi, C; Bonneau Arbeletche, L; Borodai, N; Botti, A M; Brack, J; Bretz, T; Briechle, F L; Buchholz, P; Bueno, A; Buitink, S; Buscemi, M; Caballero-Mora, K S; Caccianiga, L; Cancio, A; Canfora, F; Caracas, I.

Afiliación

Aab A; IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands.
Abreu P; Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal.
Aglietta M; Osservatorio Astrofisico di Torino (INAF), Torino, Italy.
Albury JM; INFN, Sezione di Torino, Torino, Italy.
Allekotte I; University of Adelaide, Adelaide, South Australia, Australia.
Almela A; Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina.
Alvarez-Muñiz J; Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina.
Alves Batista R; Universidad Tecnológica Nacional-Facultad Regional Buenos Aires, Buenos Aires, Argentina.
Anastasi GA; Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
Anchordoqui L; IMAPP, Radboud University Nijmegen, Nijmegen, The Netherlands.
Andrada B; INFN, Sezione di Torino, Torino, Italy.
Andringa S; Dipartimento di Fisica, Università Torino, Torino, Italy.
Aramo C; Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, New York, USA.
Araújo Ferreira PR; Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina.
Asorey H; Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal.
Assis P; INFN, Sezione di Napoli, Napoli, Italy.
Avila G; III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany.
Badescu AM; Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina.
Bakalova A; Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal.
Balaceanu A; Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina.
Barbato F; University Politehnica of Bucharest, Bucharest, Romania.
Barreira Luz RJ; Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic.
Becker KH; "Horia Hulubei" National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania.
Bellido JA; INFN, Sezione di Napoli, Napoli, Italy.
Berat C; Dipartimento di Fisica "Ettore Pancini," Università di Napoli "Federico II," Napoli, Italy.
Bertaina ME; Laboratório de Instrumentação e Física Experimental de Partículas-LIP and Instituto Superior Técnico-IST, Universidade de Lisboa-UL, Lisboa, Portugal.
Bertou X; Department of Physics, Bergische Universität Wuppertal, Wuppertal, Germany.
Biermann PL; University of Adelaide, Adelaide, South Australia, Australia.
Bister T; Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France.
Biteau J; INFN, Sezione di Torino, Torino, Italy.
Blazek J; Dipartimento di Fisica, Università Torino, Torino, Italy.
Bleve C; Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina.
Bohácová M; Max-Planck-Institut für Radioastronomie, Bonn, Germany.
Boncioli D; III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany.
Bonifazi C; Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France.
Bonneau Arbeletche L; Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic.
Borodai N; Université Grenoble Alpes, CNRS, Grenoble Institute of Engineering Université Grenoble Alpes, LPSC-IN2P3, 38000 Grenoble, France.
Botti AM; Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic.
Brack J; Dipartimento di Scienze Fisiche e Chimiche, Università dell'Aquila, L'Aquila, Italy.
Bretz T; INFN Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila), Italy.
Briechle FL; Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
Buchholz P; Instituto de Física, Universidade de São Paulo, São Paulo, Brazil.
Bueno A; Institute of Nuclear Physics PAN, Krakow, Poland.
Buitink S; Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina.
Buscemi M; Colorado State University, Fort Collins, Colorado, USA.
Caballero-Mora KS; III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany.
Caccianiga L; III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany.
Cancio A; Universität Siegen, Fachbereich 7 Physik-Experimentelle Teilchenphysik, Siegen, Germany.
Canfora F; Universidad de Granada and C.A.F.P.E., Granada, Spain.
Caracas I; Vrije Universiteit Brussels, Brussels, Belgium.

Phys Rev Lett ; 126(15): 152002, 2021 Apr 16.

Article en En | MEDLINE | ID: mdl-33929235

ABSTRACT

ABSTRACT

We present the first measurement of the fluctuations in the number of muons in extensive air showers produced by ultrahigh energy cosmic rays. We find that the measured fluctuations are in good agreement with predictions from air shower simulations. This observation provides new insights into the origin of the previously reported deficit of muons in air shower simulations and constrains models of hadronic interactions at ultrahigh energies. Our measurement is compatible with the muon deficit originating from small deviations in the predictions from hadronic interaction models of particle production that accumulate as the showers develop.

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Texto completo: 1 Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2021 Tipo del documento: Article País de afiliación: Países Bajos

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