n-p short-range correlations from (p, 2p+n) measurements -: art. no. 042301

被引：139

作者：

Tang, A ^{[1
]}

Watson, JW

Aclander, J

Alster, J

Asryan, G

Averichev, Y

Barton, D

Baturin, V

Bukhtoyarova, N

Carroll, A

Gushue, S

Heppelmann, S

Leksanov, A

Makdisi, Y

Malki, A

Minina, E

Navon, I

Nicholson, H

Ogawa, A

Panebratsev, Y

Piasetzky, E

Schetkovsky, A

Shimanskiy, S

Zhalov, D

机构：

[1] Kent State Univ, Dept Phys, Kent, OH 44242 USA

[2] Tel Aviv Univ, Sackler Fac Exact Sci, Sch Phys & Astron, IL-69978 Ramat Aviv, Israel

[3] Yerevan Phys Inst, Yerevan 375036, Armenia

[4] Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA

[5] Petersburg Nucl Phys Inst, St Petersburg 188350, Russia

[6] Penn State Univ, Dept Phys, University Pk, PA 16801 USA

[7] Mt Holyoke Coll, Dept Phys, S Hadley, MA 01075 USA

[8] Joint Inst Nucl Res, Dubna 141980, Moscow, Russia

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.90.042301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We studied the C-12(p,2p+n) reaction at beam momenta of 5.9, 8.0, and 9.0 GeV/c. For quasielastic (p,2p) events p(f), the momentum of the knocked-out proton before the reaction, was compared (event by event) with p(n), the coincident neutron momentum. For \p(n)\>k(F)=0.220 GeV/c (the Fermi momentum) a strong back-to-back directional correlation between p(f) and p(n) was observed, indicative of short-range n-p correlations. From p(n) and p(f) we constructed the distributions of c.m. and relative motion in the longitudinal direction for correlated pairs. We also determined that 49+/-13% of events with \p(f)\>k(F) had directionally correlated neutrons with \p(n)\>k(F).

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页数：4

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