Self-consistent extraction of spectroscopic bounds on light new physics
In: ISSN: 0031-9007, 2023
Online
academicJournal
Zugriff:
International audience ; Fundamental physical constants are determined from a collection of precision measurements of elementary particles, atoms and molecules. This is usually done under the assumption of the Standard Model~(SM) of particle physics. Allowing for light new physics~(NP) beyond the SM modifies the extraction of fundamental physical constants. Consequently, setting NP bounds using these data, and at the same time assuming the CODATA recommended values for the fundamental physical constants, is not reliable. As we show in this Letter, both SM and NP parameters can be simultaneously determined in a consistent way from a global fit. For light vectors with QED-like couplings, such as the dark photon, we provide a prescription that recovers the degeneracy with the photon in the massless limit, and requires calculations only at leading order in the small new physics couplings. At present, the data show tensions partially related to the proton charge radius determination. We show that these can be alleviated by including contributions from a light scalar with flavor non-universal couplings.
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Self-consistent extraction of spectroscopic bounds on light new physics
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Autor/in / Beteiligte Person: | Delaunay, Cédric ; Karr, Jean-Philippe ; Kitahara, Teppei ; Koelemeij, Jeroen C.J. ; Soreq, Yotam ; Zupan, Jure ; Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH) ; Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) ; Laboratoire Kastler Brossel (LKB Collège de France ) ; Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS) ; École normale supérieure - Paris (ENS-PSL) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) ; Université d'Évry-Val-d'Essonne (UEVE) ; University, Nagoya ; Vrije Universiteit Amsterdam Amsterdam (VU) ; Department of Physics, Technion ; University of Cincinnati (UC) |
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Zeitschrift: | ISSN: 0031-9007, 2023 |
Veröffentlichung: | HAL CCSD ; American Physical Society, 2023 |
Medientyp: | academicJournal |
DOI: | 10.1103/PhysRevLett.130.121801 |
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