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.
n-p Short-Range Correlations from (p,2p + n) Measurements
3 Pith papers cite this work, alongside 147 external citations. Polarity classification is still indexing.
3
Pith papers citing it
147
external citations · Pith
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.
verdicts
UNVERDICTED 3representative citing papers
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.
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.
citing papers explorer
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Short-Range Correlations Between Partons in a Proton
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.
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Experimental Study of Bremsstrahlung Gamma Ray Emission and Short-Range Correlations in $^{124}$Sn+$^{124}$Sn Collisions at 25 MeV/u
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.
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Short-range correlations in nuclei
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.