153663 20251017144607.0 doi 10.1103/PhysRevD.111.082009 sideral 143807 ART-2025-143807 eng Caspers, F. Daily modulations and broadband strategy in axion searches: An application with the CAST-CAPP detector 2025 Access copy available to the general public Unrestricted It has been previously advocated that the presence of the daily and annual modulations of the axion flux on the Earth’s surface may dramatically change the strategy of the axion searches. The arguments were based on the so-called Axion Quark Nugget (AQN) dark matter model which was originally put forward to explain the similarity of the dark and visible cosmological matter densities Ωdark∼Ωvisible. In this framework, the population of galactic axions with mass 10−6  eV≲ma≲10−3  eV and velocity ⟨va⟩∼10−3c will be accompanied by axions with typical velocities ⟨va⟩∼0.6c emitted by AQNs. Furthermore, in this framework, it has also been argued that the AQN-induced axion daily modulation (in contrast with the conventional weakly interactive massive particle paradigm) could be as large as (10–20)%, representing the main motivation for the present investigation. We argue that the daily modulations along with the broadband detection strategy can be very useful tools for the discovery of such relativistic axions. The data from the CAST-CAPP detector have been used following such arguments. Unfortunately, due to the dependence of the amplifier chain on temperature-dependent gain drifts and other factors, we could not conclusively show the presence or absence of a dark sector-originated daily modulation. However, this proof of principle analysis procedure can serve as a reference for future studies. info:eu-repo/grantAgreement/EUR/ERC-2017-AdG-788781 info:eu-repo/grantAgreement/EUR/ERC-2018-StG-802836-AxScale info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2016-76978-C3-2-P info:eu-repo/grantAgreement/ES/MINECO/PID2019-108122GB-C33 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/submittedVersion Adair, C.M. Altenmüller, K. Anastassopoulos, V. Arguedas Cuendis, S. Baier, J. Barth, K. Belov, A. Bozicevic, D. Bräuninger, H. Cantatore, G. Castel, J.F. Universidad de Zaragoza (orcid)0000-0003-3532-7540 Çetin, S.A. Chung, W. Choi, H. Choi, J. Dafni, T. Davenport, M. Dermenev, A. Desch, K. Döbrich, B. Fischer, H. Funk, W. Galan, J. Gardikiotis, A. Gninenko, S. Golm, J. Hasinoff, M.D. Hoffmann, D.H.H. Díez Ibáñez, D. Universidad de Zaragoza Irastorza, I.G. Universidad de Zaragoza (orcid)0000-0003-1163-1687 Jakovcic, K. Kaminski, J. Karuza, M. Krieger, C. Kutlu, Ç. Lakic, B. Laurent, J.M. Lee, J. Lee, S. Luzón, G. Margalejo, C. Universidad de Zaragoza (orcid)0000-0001-6213-5590 Maroudas, M. Miceli, L. Mirallas, H. Universidad de Zaragoza (orcid)0000-0002-9951-8680 Obis, L. (orcid)0000-0002-7990-2060 Özbey, A. Özbozduman, K. Pivovaroff, M.J. Rosu, M. Ruz, J. Ruiz-Chóliz, E. Schmidt, S. Semertzidis, Y.K. Solanki, S.K. Stewart, L. Tsagris, I. Vafeiadis, T. Vogel, J.K. (orcid)0000-0002-5850-5517 Vretenar, M. Youn, S. Zhitnitsky, A. Zioutas, K. 2004 X Universidad de Zaragoza Dpto. Física Teórica Proy. investigación HCA 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 111, 8 (2025), [18 pp.] Phys. rev. D Physical Review D 2470-0010 4939223 http://zaguan.unizar.es/record/153663/files/texto_completo.pdf Preprint 2821208 http://zaguan.unizar.es/record/153663/files/texto_completo.jpg?subformat=icon icon Preprint oai:zaguan.unizar.es:153663 articulos driver 2025-10-17-14:15:44 ARTICLE