(2021) 12C(e,e'pN) measurements of short range correlations in the tensor-to-scalar interaction transition region. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 136523. ISSN 0370-2693
Abstract
High-momentum configurations of nucleon pairs at short-distance are probed using measurements of the 12C(e,e′p) and 12C(e,e′pN) reactions (where N is either n or p), at high-Q2 and xB>1.1. The data span a missing-momentum range of 300–1000 MeV/c and are predominantly sensitive to the transition region of the strong nuclear interaction from a Tensor to Scalar interaction. The data are well reproduced by theoretical calculations using the Generalized Contact Formalism with both chiral and phenomenological nucleon-nucleon (NN) interaction models. This agreement suggests that the measured high missing-momentum protons up to 1000 MeV/c predominantly belong to short-ranged correlated (SRC) pairs. The measured 12C(e,e′pN) / 12C(e,e′p) and 12C(e,e′pp) / 12C(e,e′pn) cross-section ratios are consistent with a decrease in the fraction of proton-neutron SRC pairs and increase in the fraction of proton-proton SRC pairs with increasing missing momentum. This confirms the transition from an isospin-dependent tensor NN interaction at ∼400 MeV/c to an isospin-independent scalar interaction at high-momentum around ∼800 MeV/c as predicted by theoretical calculation.
Metadata
Item Type: | Article |
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Copyright, Publisher and Additional Information: | Funding Information: We acknowledge the efforts of the staff of the Accelerator and Physics Divisions at Jefferson Lab that made this experiment possible. The analysis presented here was carried out as part of the Jefferson Lab Hall B Data-Mining project supported by the U.S. Department of Energy (DOE). The research was also supported by the National Science Foundation , the PAZY Foundation , the Israel Science Foundation and the United Kingdom's Science and Technology Facilities Council (STFC). The Jefferson Science Associates operates the Thomas Jefferson National Accelerator Facility for the DOE, Office of Science, Office of Nuclear Physics under Contract No. DE-AC05-06OR23177 . Publisher Copyright: © 2021 The Author(s) |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Arts and Humanities (York) > Music (York) The University of York > Faculty of Sciences (York) > Computer Science (York) The University of York > Faculty of Sciences (York) > Health Sciences (York) The University of York > Faculty of Sciences (York) > Physics (York) The University of York > Faculty of Social Sciences (York) > Economics and Related Studies (York) The University of York > Faculty of Sciences (York) > Electronic Engineering (York) The University of York > Faculty of Social Sciences (York) > Politics (York) The University of York > Faculty of Sciences (York) > Mathematics (York) The University of York > Faculty of Social Sciences (York) > The York Law School |
Funding Information: | Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC) ST/V001035/1 |
Depositing User: | Pure (York) |
Date Deposited: | 02 Feb 2022 16:20 |
Last Modified: | 05 Feb 2025 11:10 |
Published Version: | https://doi.org/10.1016/j.physletb.2021.136523 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.physletb.2021.136523 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:183216 |
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Description: 12C(e,e’pN) measurements of short range correlations in the tensor-to-scalar interaction transition region
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