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n-p Short-Range Correlations from (p,2p + n) Measurements

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arxiv nucl-ex/0206003 v1 pith:7QYW5Y5D submitted 2002-06-05 nucl-ex

A. Tang , J. W. Watson , J. Aclander , J. Alster , G. Asryan , Y. Averichev , D. Barton , V. Baturin
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N. Bukhtoyarova A. Carroll S. Heppelmann A. Leksanov Y. Makdisi A. Malki E. Minina I. Navon H. Nicholson A. Ogawa Yu. Panebratsev E. Piasetzky A. Schetkovsky S. Shimanskiy D. Zhalov
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abstract

We studied the $^{12}$C(p,2p+n) reaction at beam momenta of 5.9, 8.0 and 9.0 GeV/c. For quasielastic (p,2p) events we reconstructed {\bf p_f} the momentum of the knocked-out proton before the reaction; {\bf p_f} was then compared (event-by-event) with {\bf p_n}, the measured, coincident neutron momentum. For $|p_n|$ > k$_F$ = 0.220 GeV/c (the Fermi momentum) a strong back-to-back directional correlation between {\bf p_f} and {\bf p_n} was observed, indicative of short-range n-p correlations. From {\bf p_n} and {\bf p_f} we constructed the distributions of c.m. and relative motion in the longitudinal direction for correlated pairs. After correcting for detection efficiency, flux attenuation and solid angle, we determined that 49 $\pm$ 13 % of events with $|p_f|$ > k_F had directionally correlated neutrons with $|p_n|$ > k$_F$. Thus short-range 2N correlations are a major source of high-momentum nucleons in nuclei.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 147 citations worldwide. Full citation record

  1. Systematic study of large-momentum distribution in nuclei with the operator product expansion

    nucl-th 2024-12 conditional novelty 6.0 of 10

    Using OPE matched to Pionless EFT, the authors reproduce the deuteron's high-momentum nucleon distribution from scattering-state inputs, validating the method against the AV18 potential.

  2. Short-Range Correlations Between Partons in a Proton

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    Proposes EIC jet-pion-electron measurements to detect and quantify short-range quark pair correlations in protons, expecting ud pairs to dominate due to diquark attraction.

  3. Experimental Study of Bremsstrahlung Gamma Ray Emission and Short-Range Correlations in $^{124}$Sn+$^{124}$Sn Collisions at 25 MeV/u

    nucl-ex 2025-08 unverdicted novelty 5.0 of 10

    Precision measurement of bremsstrahlung gamma rays in 124Sn+124Sn collisions at 25 MeV/u yields a high-momentum tail fraction of (20 ± 3)% in 124Sn when compared to IBUU simulations.

  4. Short-range correlations in nuclei

    nucl-ex 2026-05 unverdicted novelty 2.0 of 10

    Short-range correlated pairs account for roughly 20% of nucleons in any nucleus and nearly all high-momentum nucleons, originating from the nucleon-nucleon tensor force.

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