Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei

CLAS Collaboration

doi:10.1103/PhysRevC.107.L061301

Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei

CLAS Collaboration

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We report the measurement of xB scaling in (e,e′p) cross-section ratios off nuclei relative to deuterium at large missing momentum of 350≤pmiss≤600 MeV/c. The observed scaling extends over a kinematic range of 0.7≤xB≤1.8, which is significantly wider than 1.4≤xB≤1.8 previously observed for inclusive (e,e′) cross-section ratios. The xB-integrated cross-section ratios become constant (i.e., scale) beginning at pmiss≈kF, the nuclear Fermi momentum. Comparing with theoretical calculations we find good agreement with generalized contact formalism calculations for high missing momentum (>375 MeV/c), suggesting the observed scaling results from interacting with nucleons in short-range correlated (SRC) pairs. For low missing momenta, mean-field calculations show good agreement with the data for pmiss<kF, and suggest a potential non-negligible contribution to the measured cross-section ratios from scattering off single, uncorrelated, nucleons up to pmiss≈350 MeV/c. Therefore, SRCs become dominant in nuclei at pmiss≈350 MeV/c, well above the nuclear Fermi Surface of kF≈250 MeV/c.

Original language	English
Article number	L061301
Number of pages	7
Journal	Physical Review C
Volume	107
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.107.L061301
Publication status	Published - 6 Jun 2023

Bibliographical note

Funding Information:
We acknowledge the efforts of the staff of the Accelerator and Physics Divisions at Jefferson Laboratory 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 Israel Science Foundation, the Pazi Foundation, the Chilean Comisión Nacional de Investigación Científica y TecnolÃ³gica, the French Centre National de la Recherche Scientifique and Commissariat a l'Energie Atomique, the FrenchAmerican Cultural Exchange, the Italian Istituto Nazionale di Fisica Nucleare, the National Research Foundation of Korea, and the UK Science and Technology Facilities Council. 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:
© 2023 American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

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10.1103/PhysRevC.107.L061301

Observation of large missing-momentum (e, e p) cross-section scaling and the onset of correlated-pair dominance in nuclei
© 2023 American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
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@article{2a9001bfbd6d43f087e62c38ae93db4c,

title = "Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei",

abstract = "We report the measurement of xB scaling in (e,e′p) cross-section ratios off nuclei relative to deuterium at large missing momentum of 350≤pmiss≤600 MeV/c. The observed scaling extends over a kinematic range of 0.7≤xB≤1.8, which is significantly wider than 1.4≤xB≤1.8 previously observed for inclusive (e,e′) cross-section ratios. The xB-integrated cross-section ratios become constant (i.e., scale) beginning at pmiss≈kF, the nuclear Fermi momentum. Comparing with theoretical calculations we find good agreement with generalized contact formalism calculations for high missing momentum (>375 MeV/c), suggesting the observed scaling results from interacting with nucleons in short-range correlated (SRC) pairs. For low missing momenta, mean-field calculations show good agreement with the data for pmiss",

author = "{CLAS Collaboration} and I. Korover and Denniston, {A. W.} and A. Kiral and A. Schmidt and A. Lovato and N. Rocco and A. Nikolakopoulos and Weinstein, {L. B.} and E. Piasetzky and O. Hen and Amaryan, {M. J.} and Giovanni Angelini and H. Atac and Baltzell, {N. A.} and L. Barion and M. Battaglieri and I. Bedlinskiy and Fatiha Benmokhtar and A. Bianconi and L. Biondo and Biselli, {A. S.} and F. Boss{\`u} and S. Boiarinov and Briscoe, {W. J.} and D. Bulumulla and Burkert, {V. D.} and Carman, {D. S.} and Carvajal, {J. C.} and M. Caudron and P. Chatagnon and T. Chetry and G. Ciullo and Cole, {P. L.} and M. Contalbrigo and G. Costantini and A. D'Angelo and N. Dashyan and {De Vita}, R. and M. Defurne and A. Deur and S. Diehl and C. Djalali and M. Duer and R. Dupre and H. Egiyan and M. Ehrhart and {El Alaoui}, A. and {El Fassi}, L. and S. Fegan and N. Zachariou",

note = "Funding Information: We acknowledge the efforts of the staff of the Accelerator and Physics Divisions at Jefferson Laboratory 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 Israel Science Foundation, the Pazi Foundation, the Chilean Comisi{\'o}n Nacional de Investigaci{\'o}n Cient{\'i}fica y Tecnol{\~A}³gica, the French Centre National de la Recherche Scientifique and Commissariat a l'Energie Atomique, the FrenchAmerican Cultural Exchange, the Italian Istituto Nazionale di Fisica Nucleare, the National Research Foundation of Korea, and the UK Science and Technology Facilities Council. 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: {\textcopyright} 2023 American Physical Society. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. Further copying may not be permitted; contact the publisher for details",

year = "2023",

month = jun,

day = "6",

doi = "10.1103/PhysRevC.107.L061301",

language = "English",

volume = "107",

journal = "Physical Review C",

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number = "6",

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T1 - Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei

AU - CLAS Collaboration

AU - Korover, I.

AU - Denniston, A. W.

AU - Kiral, A.

AU - Schmidt, A.

AU - Lovato, A.

AU - Rocco, N.

AU - Nikolakopoulos, A.

AU - Weinstein, L. B.

AU - Piasetzky, E.

AU - Hen, O.

AU - Amaryan, M. J.

AU - Angelini, Giovanni

AU - Atac, H.

AU - Baltzell, N. A.

AU - Barion, L.

AU - Battaglieri, M.

AU - Bedlinskiy, I.

AU - Benmokhtar, Fatiha

AU - Bianconi, A.

AU - Biondo, L.

AU - Biselli, A. S.

AU - Bossù, F.

AU - Boiarinov, S.

AU - Briscoe, W. J.

AU - Bulumulla, D.

AU - Burkert, V. D.

AU - Carman, D. S.

AU - Carvajal, J. C.

AU - Caudron, M.

AU - Chatagnon, P.

AU - Chetry, T.

AU - Ciullo, G.

AU - Cole, P. L.

AU - Contalbrigo, M.

AU - Costantini, G.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - Defurne, M.

AU - Deur, A.

AU - Diehl, S.

AU - Djalali, C.

AU - Duer, M.

AU - Dupre, R.

AU - Egiyan, H.

AU - Ehrhart, M.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Fegan, S.

AU - Zachariou, N.

N1 - Funding Information: We acknowledge the efforts of the staff of the Accelerator and Physics Divisions at Jefferson Laboratory 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 Israel Science Foundation, the Pazi Foundation, the Chilean Comisión Nacional de Investigación Científica y TecnolÃ³gica, the French Centre National de la Recherche Scientifique and Commissariat a l'Energie Atomique, the FrenchAmerican Cultural Exchange, the Italian Istituto Nazionale di Fisica Nucleare, the National Research Foundation of Korea, and the UK Science and Technology Facilities Council. 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: © 2023 American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2023/6/6

Y1 - 2023/6/6

N2 - We report the measurement of xB scaling in (e,e′p) cross-section ratios off nuclei relative to deuterium at large missing momentum of 350≤pmiss≤600 MeV/c. The observed scaling extends over a kinematic range of 0.7≤xB≤1.8, which is significantly wider than 1.4≤xB≤1.8 previously observed for inclusive (e,e′) cross-section ratios. The xB-integrated cross-section ratios become constant (i.e., scale) beginning at pmiss≈kF, the nuclear Fermi momentum. Comparing with theoretical calculations we find good agreement with generalized contact formalism calculations for high missing momentum (>375 MeV/c), suggesting the observed scaling results from interacting with nucleons in short-range correlated (SRC) pairs. For low missing momenta, mean-field calculations show good agreement with the data for pmiss

AB - We report the measurement of xB scaling in (e,e′p) cross-section ratios off nuclei relative to deuterium at large missing momentum of 350≤pmiss≤600 MeV/c. The observed scaling extends over a kinematic range of 0.7≤xB≤1.8, which is significantly wider than 1.4≤xB≤1.8 previously observed for inclusive (e,e′) cross-section ratios. The xB-integrated cross-section ratios become constant (i.e., scale) beginning at pmiss≈kF, the nuclear Fermi momentum. Comparing with theoretical calculations we find good agreement with generalized contact formalism calculations for high missing momentum (>375 MeV/c), suggesting the observed scaling results from interacting with nucleons in short-range correlated (SRC) pairs. For low missing momenta, mean-field calculations show good agreement with the data for pmiss

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U2 - 10.1103/PhysRevC.107.L061301

DO - 10.1103/PhysRevC.107.L061301

M3 - Article

AN - SCOPUS:85161836125

SN - 2469-9985

VL - 107

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - L061301

ER -

Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei

Abstract

Bibliographical note

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Nuclear Physics Consolidated Grant 2021-2024

Cite this

Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei

Abstract

Bibliographical note

Access to Document

Other files and links

Projects

Nuclear Physics Consolidated Grant 2021-2024

Cite this