TY  - JOUR
AU  - Fuchs, Elina
AU  - Kirk, Fiona
AU  - Mariotti, Agnese
AU  - Richter, Jan
AU  - Robbiati, Matteo
TI  - Toward a global search for new physics with isotope shifts
JO  - Physical review / A
VL  - 112
IS  - 5
SN  - 2469-9926
CY  - Woodbury, NY
PB  - Inst.
M1  - PUBDB-2026-00026
M1  - arXiv:2506.07303
M1  - TIF-UNIMI-2025-13
M1  - DESY-25-080
SP  - 052224
PY  - 2025
N1  - cc-bc, 37 pages, 24 figures, 10 tables
AB  - Isotope shifts have emerged as a sensitive probe of new bosons that couple to electrons and neutrons, and of nuclear structure. The recent Hz- or even sub-Hz-level isotope shift measurements across different elements call for a global assessment of all available data. In this work, we present the fit framework kifit that enables a combined analysis of isotope shift data from several elements, taking into account correlations. We provide a thorough comparison of analytical methods and the fit to analyze linear and nonlinear King plots and quantify their uncertainties. Finally, we provide recommendations for future measurements that could enhance the sensitivity to new physics and offer new insights into nuclear structure.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1103/kzq9-x916
UR  - https://bib-pubdb1.desy.de/record/643128
ER  -