Hard photodisintegration of a proton pair

I. Pomerantz; N. Bubis; K. Allada; A. Beck; S. Beck; B. L. Berman; W. Boeglin; A. Camsonne; M. Canan; K. Chirapatpimol; E. Cisbani; F. Cusanno; C. W. de Jager; C. Dutta; F. Garibaldi; O. Geagla; R. Gilman; J. Glister; D. W. Higinbotham; X. Jiang; A. T. Katramatou; E. Khrosinkova; B. W. Lee; J. J. LeRose; R. Lindgren; E. McCullough; D. Meekins; R. Michaels; B. Moffit; G. G. Petratos; E. Piasetzky; X. Qian; Y. Qiang; I. Rodriguez; G. Ron; A. Saha; A. J. Sarty; B. Sawatzky; E. Schulte; R. Shneor; N. Sparveris; R. Subedi; S. Strauch; V. Sulkosky; Y. Wang; B. Wojtsekhowski; X. Yan; H. Yao; X. Zhan; X. Zheng

doi:10.1016/j.physletb.2009.12.050

Hard photodisintegration of a proton pair

I. Pomerantz, N. Bubis, K. Allada, A. Beck, S. Beck, B. L. Berman, W. Boeglin, A. Camsonne, M. Canan, K. Chirapatpimol, E. Cisbani, F. Cusanno, C. W. de Jager, C. Dutta, F. Garibaldi, O. Geagla, R. Gilman, J. Glister, D. W. Higinbotham^*, X. JiangA. T. Katramatou, E. Khrosinkova, B. W. Lee, J. J. LeRose, R. Lindgren, E. McCullough, D. Meekins, R. Michaels, B. Moffit, G. G. Petratos, E. Piasetzky, X. Qian, Y. Qiang, I. Rodriguez, G. Ron, A. Saha, A. J. Sarty, B. Sawatzky, E. Schulte, R. Shneor, N. Sparveris, R. Subedi, S. Strauch, V. Sulkosky, Y. Wang, B. Wojtsekhowski, X. Yan, H. Yao, X. Zhan, X. Zheng

^*Corresponding author for this work

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Abstract

We present a study of high energy photodisintegration of proton-pairs through the γ + ³He → p + p + n channel. Photon energies, E_γ, 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 E_γ below the scaling region, the scaled cross section was found to present a strong energy-dependent structure not observed in deuteron photodisintegration.

Original language	English
Pages (from-to)	106-109
Number of pages	4
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	684
Issue number	2-3
DOIs	https://doi.org/10.1016/j.physletb.2009.12.050
State	Published - 8 Feb 2010
Externally published	Yes

Bibliographical note

Funding Information:
We thank M.M. Sargsian for initiating and escorting this study and S.J. Brodsky, L.L. Frankfurt and M. Strikman for helpful discussions. We thank the JLab physics and accelerator divisions for their support and especially the CLAS Collaboration of Hall B, for allowing us access to their data. This work was supported by the US Department of Energy , the US National Science Foundation , the Israel Science Foundation , and the US-Israeli Bi-National Scientific Foundation . Jefferson Science Associates operates the Thomas Jefferson National Accelerator Facility under DOE contract DE-AC05-06OR23177.

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10.1016/j.physletb.2009.12.050

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Pomerantz, I., Bubis, N., Allada, K., Beck, A., Beck, S., Berman, B. L., Boeglin, W., Camsonne, A., Canan, M., Chirapatpimol, K., Cisbani, E., Cusanno, F., de Jager, C. W., Dutta, C., Garibaldi, F., Geagla, O., Gilman, R., Glister, J., Higinbotham, D. W., ... Zheng, X. (2010). Hard photodisintegration of a proton pair. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 684(2-3), 106-109. https://doi.org/10.1016/j.physletb.2009.12.050

@article{1e87e422e301429ab3ce893aa3139ddd,

title = "Hard photodisintegration of a proton pair",

abstract = "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.",

author = "I. Pomerantz and N. Bubis and K. Allada and A. Beck and S. Beck and Berman, {B. L.} and W. Boeglin and A. Camsonne and M. Canan and K. Chirapatpimol and E. Cisbani and F. Cusanno and {de Jager}, {C. W.} and C. Dutta and F. Garibaldi and O. Geagla and R. Gilman and J. Glister and Higinbotham, {D. W.} and X. Jiang and Katramatou, {A. T.} and E. Khrosinkova and Lee, {B. W.} and LeRose, {J. J.} and R. Lindgren and E. McCullough and D. Meekins and R. Michaels and B. Moffit and Petratos, {G. G.} and E. Piasetzky and X. Qian and Y. Qiang and I. Rodriguez and G. Ron and A. Saha and Sarty, {A. J.} and B. Sawatzky and E. Schulte and R. Shneor and N. Sparveris and R. Subedi and S. Strauch and V. Sulkosky and Y. Wang and B. Wojtsekhowski and X. Yan and H. Yao and X. Zhan and X. Zheng",

note = "Funding Information: We thank M.M. Sargsian for initiating and escorting this study and S.J. Brodsky, L.L. Frankfurt and M. Strikman for helpful discussions. We thank the JLab physics and accelerator divisions for their support and especially the CLAS Collaboration of Hall B, for allowing us access to their data. This work was supported by the US Department of Energy , the US National Science Foundation , the Israel Science Foundation , and the US-Israeli Bi-National Scientific Foundation . Jefferson Science Associates operates the Thomas Jefferson National Accelerator Facility under DOE contract DE-AC05-06OR23177.",

year = "2010",

month = feb,

day = "8",

doi = "10.1016/j.physletb.2009.12.050",

language = "אנגלית",

volume = "684",

pages = "106--109",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "2-3",

}

Pomerantz, I, Bubis, 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 2010, 'Hard photodisintegration of a proton pair', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 684, no. 2-3, pp. 106-109. https://doi.org/10.1016/j.physletb.2009.12.050

TY - JOUR

T1 - Hard photodisintegration of a proton pair

AU - Pomerantz, I.

AU - Bubis, N.

AU - Allada, K.

AU - Beck, A.

AU - Beck, S.

AU - Berman, B. L.

AU - Boeglin, W.

AU - Camsonne, A.

AU - Canan, M.

AU - Chirapatpimol, K.

AU - Cisbani, E.

AU - Cusanno, F.

AU - de Jager, C. W.

AU - Dutta, C.

AU - Garibaldi, F.

AU - Geagla, O.

AU - Gilman, R.

AU - Glister, J.

AU - Higinbotham, D. W.

AU - Jiang, X.

AU - Katramatou, A. T.

AU - Khrosinkova, E.

AU - Lee, B. W.

AU - LeRose, J. J.

AU - Lindgren, R.

AU - McCullough, E.

AU - Meekins, D.

AU - Michaels, R.

AU - Moffit, B.

AU - Petratos, G. G.

AU - Piasetzky, E.

AU - Qian, X.

AU - Qiang, Y.

AU - Rodriguez, I.

AU - Ron, G.

AU - Saha, A.

AU - Sarty, A. J.

AU - Sawatzky, B.

AU - Schulte, E.

AU - Shneor, R.

AU - Sparveris, N.

AU - Subedi, R.

AU - Strauch, S.

AU - Sulkosky, V.

AU - Wang, Y.

AU - Wojtsekhowski, B.

AU - Yan, X.

AU - Yao, H.

AU - Zhan, X.

AU - Zheng, X.

N1 - Funding Information: We thank M.M. Sargsian for initiating and escorting this study and S.J. Brodsky, L.L. Frankfurt and M. Strikman for helpful discussions. We thank the JLab physics and accelerator divisions for their support and especially the CLAS Collaboration of Hall B, for allowing us access to their data. This work was supported by the US Department of Energy , the US National Science Foundation , the Israel Science Foundation , and the US-Israeli Bi-National Scientific Foundation . Jefferson Science Associates operates the Thomas Jefferson National Accelerator Facility under DOE contract DE-AC05-06OR23177.

PY - 2010/2/8

Y1 - 2010/2/8

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=74549184684&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2009.12.050

DO - 10.1016/j.physletb.2009.12.050

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:74549184684

SN - 0370-2693

VL - 684

SP - 106

EP - 109

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 2-3

ER -

Hard photodisintegration of a proton pair

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