Search for Axionlike and Scalar Particles with the NA64 Experiment

Vista sencilla de ítem
dc.contributor.authorBanerjee, D.
dc.contributor.authorBernhard, J.
dc.contributor.authorBurtsev, V.E.
dc.contributor.authorChumakov, A.G.
dc.contributor.authorCooke, D.
dc.contributor.authorCrivelli, P.
dc.contributor.authorDepero, E.
dc.contributor.authorDermenev, A.V.
dc.contributor.authorDonskov, S.V.
dc.contributor.authorDusaev, R.R.
dc.contributor.authorEnik, T.
dc.contributor.authorCharitonidis, N.
dc.date.accessioned2021-08-26T13:37:56Z
dc.date.available2021-08-26T13:37:56Z
dc.date.issued2020-08
dc.descriptionIndexación: Scopus.es
dc.description.abstractWe carried out a model-independent search for light scalar (s) and pseudoscalar axionlike (a) particles that couple to two photons by using the high-energy CERN SPS H4 electron beam. The new particles, if they exist, could be produced through the Primakoff effect in interactions of hard bremsstrahlung photons generated by 100 GeV electrons in the NA64 active dump with virtual photons provided by the nuclei of the dump. The a(s) would penetrate the downstream HCAL module, serving as a shield, and would be observed either through their a(s)→γγ decay in the rest of the HCAL detector, or as events with a large missing energy if the a(s) decays downstream of the HCAL. This method allows for the probing of the a(s) parameter space, including those from generic axion models, inaccessible to previous experiments. No evidence of such processes has been found from the analysis of the data corresponding to 2.84×1011 electrons on target, allowing us to set new limits on the a(s)γγ-coupling strength for a(s) masses below 55 MeV. © 2020 authors. Published by the American Physical Society. Funded by SCOAP3.es
dc.description.urihttps://journals-aps-org.recursosbiblioteca.unab.cl/prl/abstract/10.1103/PhysRevLett.125.081801
dc.identifier.citationPhysical Review LettersOpen AccessVolume 125, Issue 821 August 2020 Article number 081801es
dc.identifier.doi10.1103/PhysRevLett.125.081801
dc.identifier.issn0031-9007
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/19991
dc.language.isoenes
dc.publisherAmerican Physical Societyes
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectGermanium compoundses
dc.subjectCoupling strengthses
dc.subjectGammagammaes
dc.subjectMissing energyes
dc.subjectModel independentes
dc.subjectParameter spaceses
dc.subjectTwo photones
dc.subjectVirtual photonses
dc.subjectaxiones
dc.subjectbrems radiationes
dc.subjectelectron beames
dc.titleSearch for Axionlike and Scalar Particles with the NA64 Experimentes
dc.typeArtículoes
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
Banerjee_Search.pdf
Tamaño:
678.63 KB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLÉS
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista