Coulomb-free 1 S 0 p − p scattering length from the quasi-free p + d → p + p + n reaction and its relation to universality
Abstract The Coulomb-free 1 S 0 proton-proton (p-p) scattering length relies heavily on numerous and distinct theoretical techniques to remove the Coulomb contribution. Here, it has been determined from the half-off-the-energy-shell p-p scattering cross section measured at center-of-mass energies be...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-05-01
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| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-023-01221-0 |
| _version_ | 1797822838945611776 |
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| author | Aurora Tumino Giuseppe G. Rapisarda Marco La Cognata Alessandro Oliva Alejandro Kievsky Carlos A. Bertulani Giuseppe D’Agata Mario Gattobigio Giovanni L. Guardo Livio Lamia Dario Lattuada Rosario G. Pizzone Stefano Romano Maria L. Sergi Roberta Spartá Michele Viviani |
| author_facet | Aurora Tumino Giuseppe G. Rapisarda Marco La Cognata Alessandro Oliva Alejandro Kievsky Carlos A. Bertulani Giuseppe D’Agata Mario Gattobigio Giovanni L. Guardo Livio Lamia Dario Lattuada Rosario G. Pizzone Stefano Romano Maria L. Sergi Roberta Spartá Michele Viviani |
| author_sort | Aurora Tumino |
| collection | DOAJ |
| description | Abstract The Coulomb-free 1 S 0 proton-proton (p-p) scattering length relies heavily on numerous and distinct theoretical techniques to remove the Coulomb contribution. Here, it has been determined from the half-off-the-energy-shell p-p scattering cross section measured at center-of-mass energies below 1 MeV using the quasi-free p + d → p + p + n reaction. A Bayesian data-fitting approach using the expression of the s-wave nucleon-nucleon scattering cross section returned a p-p scattering length $${a}_{pp}=-18.1{7}_{-0.58}^{+0.52}{| }_{stat}\pm 0.0{1}_{syst}$$ a p p = − 18.1 7 − 0.58 + 0.52 ∣ s t a t ± 0.0 1 s y s t fm and effective range r 0 = 2.80 ± 0.05 s t a t ± 0.001 s y s t fm. A model based on universality concepts has been developed to interpret this result. It accounts for the short-range interaction as a whole, nuclear and residual electromagnetic, according to what the s-wave phase-shift δ does in the description of low-energy nucleon-nucleon scattering data. We conclude that our parameters are representative of the short-range physics and propose to assess the charge symmetry breaking of the short-range interaction instead of just the nuclear interaction. This is consistent with the current understanding that the charge dependence of nuclear forces is due to different masses of up-down quarks and their electromagnetic interactions. This achievement suggests that these properties have a lesser than expected impact in the context of the charge symmetry breaking. |
| first_indexed | 2024-03-13T10:15:07Z |
| format | Article |
| id | doaj.art-d5aa49e172614e56a4dfa7d6c3bdb9f8 |
| institution | Directory Open Access Journal |
| issn | 2399-3650 |
| language | English |
| last_indexed | 2024-03-13T10:15:07Z |
| publishDate | 2023-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Physics |
| spelling | doaj.art-d5aa49e172614e56a4dfa7d6c3bdb9f82023-05-21T11:18:23ZengNature PortfolioCommunications Physics2399-36502023-05-01611910.1038/s42005-023-01221-0Coulomb-free 1 S 0 p − p scattering length from the quasi-free p + d → p + p + n reaction and its relation to universalityAurora Tumino0Giuseppe G. Rapisarda1Marco La Cognata2Alessandro Oliva3Alejandro Kievsky4Carlos A. Bertulani5Giuseppe D’Agata6Mario Gattobigio7Giovanni L. Guardo8Livio Lamia9Dario Lattuada10Rosario G. Pizzone11Stefano Romano12Maria L. Sergi13Roberta Spartá14Michele Viviani15Facoltà di Ingegneria e Architettura, Università degli Studi di Enna “Kore”INFN-Laboratori Nazionali del SudINFN-Laboratori Nazionali del SudINFN-Laboratori Nazionali del SudINFN-Sezione di PisaDepartment of Physics and Astronomy, Texas A&M University-CommerceINFN-Laboratori Nazionali del SudUniversité Côte d’Azur, CNRS, Institut de Physique de NiceINFN-Laboratori Nazionali del SudINFN-Laboratori Nazionali del SudFacoltà di Ingegneria e Architettura, Università degli Studi di Enna “Kore”INFN-Laboratori Nazionali del SudINFN-Laboratori Nazionali del SudINFN-Laboratori Nazionali del SudINFN-Laboratori Nazionali del SudINFN-Sezione di PisaAbstract The Coulomb-free 1 S 0 proton-proton (p-p) scattering length relies heavily on numerous and distinct theoretical techniques to remove the Coulomb contribution. Here, it has been determined from the half-off-the-energy-shell p-p scattering cross section measured at center-of-mass energies below 1 MeV using the quasi-free p + d → p + p + n reaction. A Bayesian data-fitting approach using the expression of the s-wave nucleon-nucleon scattering cross section returned a p-p scattering length $${a}_{pp}=-18.1{7}_{-0.58}^{+0.52}{| }_{stat}\pm 0.0{1}_{syst}$$ a p p = − 18.1 7 − 0.58 + 0.52 ∣ s t a t ± 0.0 1 s y s t fm and effective range r 0 = 2.80 ± 0.05 s t a t ± 0.001 s y s t fm. A model based on universality concepts has been developed to interpret this result. It accounts for the short-range interaction as a whole, nuclear and residual electromagnetic, according to what the s-wave phase-shift δ does in the description of low-energy nucleon-nucleon scattering data. We conclude that our parameters are representative of the short-range physics and propose to assess the charge symmetry breaking of the short-range interaction instead of just the nuclear interaction. This is consistent with the current understanding that the charge dependence of nuclear forces is due to different masses of up-down quarks and their electromagnetic interactions. This achievement suggests that these properties have a lesser than expected impact in the context of the charge symmetry breaking.https://doi.org/10.1038/s42005-023-01221-0 |
| spellingShingle | Aurora Tumino Giuseppe G. Rapisarda Marco La Cognata Alessandro Oliva Alejandro Kievsky Carlos A. Bertulani Giuseppe D’Agata Mario Gattobigio Giovanni L. Guardo Livio Lamia Dario Lattuada Rosario G. Pizzone Stefano Romano Maria L. Sergi Roberta Spartá Michele Viviani Coulomb-free 1 S 0 p − p scattering length from the quasi-free p + d → p + p + n reaction and its relation to universality Communications Physics |
| title | Coulomb-free 1 S 0 p − p scattering length from the quasi-free p + d → p + p + n reaction and its relation to universality |
| title_full | Coulomb-free 1 S 0 p − p scattering length from the quasi-free p + d → p + p + n reaction and its relation to universality |
| title_fullStr | Coulomb-free 1 S 0 p − p scattering length from the quasi-free p + d → p + p + n reaction and its relation to universality |
| title_full_unstemmed | Coulomb-free 1 S 0 p − p scattering length from the quasi-free p + d → p + p + n reaction and its relation to universality |
| title_short | Coulomb-free 1 S 0 p − p scattering length from the quasi-free p + d → p + p + n reaction and its relation to universality |
| title_sort | coulomb free 1 s 0 p p scattering length from the quasi free p d p p n reaction and its relation to universality |
| url | https://doi.org/10.1038/s42005-023-01221-0 |
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