Search for Pauli Exclusion Principle violations with Gator at LNGS
Abstract The Pauli Exclusion Principle (PEP) appears from fundamental symmetries in quantum field theories, but its physical origin is still to be understood. High-precision experimental searches for small PEP violations permit testing key assumptions of the Standard Model with high sensitivity. We...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-11-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13510-1 |
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| author | L. Baudis R. Biondi A. Bismark A. Clozza C. Curceanu M. Galloway F. Napolitano F. Piastra K. Piscicchia A. Porcelli D. Ramírez García |
| author_facet | L. Baudis R. Biondi A. Bismark A. Clozza C. Curceanu M. Galloway F. Napolitano F. Piastra K. Piscicchia A. Porcelli D. Ramírez García |
| author_sort | L. Baudis |
| collection | DOAJ |
| description | Abstract The Pauli Exclusion Principle (PEP) appears from fundamental symmetries in quantum field theories, but its physical origin is still to be understood. High-precision experimental searches for small PEP violations permit testing key assumptions of the Standard Model with high sensitivity. We report on a dedicated measurement with Gator, a low-background, high-purity germanium detector operated at the Laboratori Nazionali del Gran Sasso, aimed at testing PEP-violating atomic transitions in lead. The experimental technique, relying on forming a new symmetry state by introducing electrons into the pre-existing electron system through a direct current, satisfies the conditions of the Messiah-Greenberg superselection rule. No PEP violation has been observed, and an upper limit on the PEP violation probability of $$\beta ^2/2 < 4.8 \cdot 10^{-29}$$ β 2 / 2 < 4.8 · 10 - 29 (90% CL) is set. This improves the previous constraint from a comparable measurement by more than one order of magnitude. |
| format | Article |
| id | doaj-art-e770cc5b3d1c435bad1a8a781cb2c195 |
| institution | DOAJ |
| issn | 1434-6052 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-e770cc5b3d1c435bad1a8a781cb2c1952025-08-20T02:43:33ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-11-01841111010.1140/epjc/s10052-024-13510-1Search for Pauli Exclusion Principle violations with Gator at LNGSL. Baudis0R. Biondi1A. Bismark2A. Clozza3C. Curceanu4M. Galloway5F. Napolitano6F. Piastra7K. Piscicchia8A. Porcelli9D. Ramírez García10Physik-Institut, University of ZürichMax-Planck-Institut für KernphysikPhysik-Institut, University of ZürichINFN, Laboratori Nazionali di FrascatiINFN, Laboratori Nazionali di FrascatiPhysik-Institut, University of ZürichINFN, Laboratori Nazionali di FrascatiPhysik-Institut, University of ZürichINFN, Laboratori Nazionali di FrascatiINFN, Laboratori Nazionali di FrascatiPhysik-Institut, University of ZürichAbstract The Pauli Exclusion Principle (PEP) appears from fundamental symmetries in quantum field theories, but its physical origin is still to be understood. High-precision experimental searches for small PEP violations permit testing key assumptions of the Standard Model with high sensitivity. We report on a dedicated measurement with Gator, a low-background, high-purity germanium detector operated at the Laboratori Nazionali del Gran Sasso, aimed at testing PEP-violating atomic transitions in lead. The experimental technique, relying on forming a new symmetry state by introducing electrons into the pre-existing electron system through a direct current, satisfies the conditions of the Messiah-Greenberg superselection rule. No PEP violation has been observed, and an upper limit on the PEP violation probability of $$\beta ^2/2 < 4.8 \cdot 10^{-29}$$ β 2 / 2 < 4.8 · 10 - 29 (90% CL) is set. This improves the previous constraint from a comparable measurement by more than one order of magnitude.https://doi.org/10.1140/epjc/s10052-024-13510-1 |
| spellingShingle | L. Baudis R. Biondi A. Bismark A. Clozza C. Curceanu M. Galloway F. Napolitano F. Piastra K. Piscicchia A. Porcelli D. Ramírez García Search for Pauli Exclusion Principle violations with Gator at LNGS European Physical Journal C: Particles and Fields |
| title | Search for Pauli Exclusion Principle violations with Gator at LNGS |
| title_full | Search for Pauli Exclusion Principle violations with Gator at LNGS |
| title_fullStr | Search for Pauli Exclusion Principle violations with Gator at LNGS |
| title_full_unstemmed | Search for Pauli Exclusion Principle violations with Gator at LNGS |
| title_short | Search for Pauli Exclusion Principle violations with Gator at LNGS |
| title_sort | search for pauli exclusion principle violations with gator at lngs |
| url | https://doi.org/10.1140/epjc/s10052-024-13510-1 |
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