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A A Watson

Explore the profile of A A Watson including associated specialties, affiliations and a list of published articles. Areas
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Articles 69
Citations 668
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Recent Articles
1.
Abdul Halim A, Abreu P, Aglietta M, Allekotte I, Almeida Cheminant K, Almela A, et al.
Phys Rev Lett . 2025 Feb; 134(2):021001. PMID: 39913843
We present measurements of the atmospheric depth of the shower maximum X_{max}, inferred for the first time on an event-by-event level using the surface detector of the Pierre Auger Observatory....
2.
Abdul Halim A, Abreu P, Aglietta M, Allekotte I, Almeida Cheminant K, Almela A, et al.
Phys Rev Lett . 2024 Jan; 132(2):021001. PMID: 38277596
We show, for the first time, radio measurements of the depth of shower maximum (X_{max}) of air showers induced by cosmic rays that are compared to measurements of the established...
3.
Abreu P, Aglietta M, Albury J, Allekotte I, Almeida Cheminant K, Almela A, et al.
Phys Rev Lett . 2023 Feb; 130(6):061001. PMID: 36827568
Instantons, which are nonperturbative solutions to Yang-Mills equations, provide a signal for the occurrence of quantum tunneling between distinct classes of vacua. They can give rise to decays of particles...
4.
Aab A, Abreu P, Aglietta M, Albury J, Allekotte I, Almela A, et al.
Phys Rev Lett . 2021 Apr; 126(15):152002. PMID: 33929235
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...
5.
Aab A, Abreu P, Aglietta M, Albury J, Allekotte I, Almela A, et al.
Phys Rev Lett . 2020 Oct; 125(12):121106. PMID: 33016715
We report a measurement of the energy spectrum of cosmic rays above 2.5×10^{18}  eV based on 215 030 events. New results are presented: at about 1.3×10^{19}  eV, the spectral index...
6.
Aab A, Abreu P, Aglietta M, Ahn E, Al Samarai I, Albuquerque I, et al.
Phys Rev Lett . 2016 Nov; 117(19):192001. PMID: 27858429
Ultrahigh energy cosmic ray air showers probe particle physics at energies beyond the reach of accelerators. Here we introduce a new method to test hadronic interaction models without relying on...
7.
Aab A, Abreu P, Aglietta M, Ahn E, Al Samarai I, Albuquerque I, et al.
Phys Rev Lett . 2016 Jul; 116(24):241101. PMID: 27367377
We measure the energy emitted by extensive air showers in the form of radio emission in the frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of...
8.
Zhang W, Aubert A, Gomez de Segura J, Karuppasamy M, Basu S, Murthy A, et al.
J Mol Biol . 2016 Apr; 428(14):2931-42. PMID: 27117189
The nucleosome remodeling deacetylase (NuRD) complex is a highly conserved regulator of chromatin structure and transcription. Structural studies have shed light on this and other chromatin modifying machines, but much...
9.
Aab A, Abreu P, Aglietta M, Ahn E, Al Samarai I, Albuquerque I, et al.
Eur Phys J C Part Fields . 2015 Jun; 75(6):269. PMID: 26120280
Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with [Formula:...
10.
Watson A
Rep Prog Phys . 2014 Feb; 77(3):036901. PMID: 24552650
Although cosmic rays were discovered over 100 years ago their origin remains uncertain. They have an energy spectrum that extends from ∼1 GeV to beyond 10(20) eV, where the rate...