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We studied the $^{12}$C(p,2p+n) reaction at beam momenta of 5.9, 8.0 and 9.0GeV/c. For quasielastic (p,2p) events we reconstructed {\bf p_f} the momentumof 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-backdirectional 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} weconstructed the distributions of c.m. and relative motion in the longitudinaldirection for correlated pairs. After correcting for detection efficiency, fluxattenuation and solid angle, we determined that 49 $\pm$ 13 % of events with$|p_f|$ > k_F had directionally correlated neutrons with $|p_n|$ > k$_F$. Thusshort-range 2N correlations are a major source of high-momentum nucleons innuclei.Comment: 4 pages and 4 figures, submitted to Phys. Rev. Let

physical review letters

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>n</mml:mi><mml:mtext mathvariant="normal">−</mml:mtext><mml:mi>p</mml:mi></mml:math>Short-Range Correlations from (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mo>,</mml:mo><mml:mn>2</mml:mn><mml:mi>p</mml:mi><mml:mo>+</mml:mo><mml:mi>n</mml:mi></mml:math>) Measurements

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