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Journal ArticleDate
2010-02-08Author
Pomerantz, IBubis, N
Allada, K
Beck, A
Beck, S
Berman, BL
Boeglin, W
Camsonne, A
Canan, M
Chirapatpimol, K
Cisbani, E
Cusanno, F
de Jager, CW
Dutta, C
Garibaldi, F
Geagla, O
Gilman, R
Glister, J
Higinbotham, DW
Jiang, X
Katramatou, AT
Khrosinkova, E
Lee, BW
LeRose, JJ
Lindgren, R
McCullough, E
Meekins, D
Michaels, R
Moffit, B
Petratos, GG
Piasetzky, E
Qian, X
Qiang, Y
Rodriguez, I
Ron, G
Saha, A
Sarty, AJ
Sawatzky, B
Schulte, E
Shneor, R
Sparveris, N
Subedi, R
Strauch, S
Sulkosky, V
Wang, Y
Wojtsekhowski, B
Yan, X
Yao, H
Zhan, X
Zheng, X
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http://hdl.handle.net/20.500.12613/6059
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10.1016/j.physletb.2009.12.050Abstract
We present a study of high energy photodisintegration of proton-pairs through the γ + 3He → p + p + n channel. Photon energies, Eγ, from 0.8 to 4.7 GeV were used in kinematics corresponding to a proton pair with high relative momentum and a neutron nearly at rest. The s-11 scaling of the cross section, as predicted by the constituent counting rule for two nucleon photodisintegration, was observed for the first time. The onset of the scaling is at a higher energy and the cross section is significantly lower than for deuteron (pn pair) photodisintegration. For Eγ below the scaling region, the scaled cross section was found to present a strong energy-dependent structure not observed in deuteron photodisintegration. © 2010 Elsevier B.V.Citation to related work
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Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy PhysicsADA compliance
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http://dx.doi.org/10.34944/dspace/6041
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