Hard photodisintegration of a proton pair in 3He

S. J. Brodsky; L. Frankfurt; R. Gilman; J. R. Hiller; G. A. Miller; E. Piasetzky; M. Sargsian; M. Strikman

doi:10.1016/j.physletb.2003.10.018

Hard photodisintegration of a proton pair in ³He

S. J. Brodsky, L. Frankfurt, R. Gilman, J. R. Hiller, G. A. Miller, E. Piasetzky, M. Sargsian, M. Strikman

Physics & Astronomy (Duluth)

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Hard photodisintegration of the deuteron has been extensively studied in order to understand the dynamics of the transition from hadronic to quark-gluon descriptions of the strong interaction. In this Letter, we discuss the extension of this program to hard photodisintegration of a pp pair in the ³He nucleus. Experimental confirmation of new features predicted here for the suggested reaction would advance our understanding of hard nuclear reactions. A main prediction, in contrast with low-energy observations, is that the pp breakup cross section is not much smaller than the one for pn break up. In some models, the energy-dependent oscillations observed for pp scattering are predicted to appear in the γ ³He → pp + n reaction. Such an observation would open up a completely new field in studies of color coherence phenomena in hard nuclear reactions. We also demonstrate that, in addition to the energy dependence, the measurement of the light-cone momentum distribution of the recoil neutron provides an independent test of the underlying dynamics of hard disintegration.

Original language	English (US)
Pages (from-to)	69-77
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	578
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2003.10.018
State	Published - Jan 1 2004

Bibliographical note

Funding Information:
We thank A. Radyushkin and L. Kondratyuk for useful discussions. The Stanford Linear Accelerator (supporting in part S.J.B.) is funded by the Department of Energy under Contract No. DE-AC03-76SF00515. The Southeastern Universities Research Association operates the Thomas Jefferson National Accelerator Facility (supporting in part S.J.B., R.G. and M.S.) under US DOE Contract DE-AC05-84ER40150. R.G. acknowledges the support of the US National Science Foundation, grant PHY-00-98642. J.R.H. acknowledges the support of the US DOE under Contract DE-FG02-98ER41087. G.A.M. acknowledges the support of the US DOE under Contract DE-FG03-97ER41014. E.P. is supported by the Israel Science Foundation founded by the Israel Academy of Science and Humanities. M.S. acknowledges the support of the US DOE under Contract DE-FG02-01ER-41172.

Keywords

Hard reactions
Photodisintegration
QCD

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10.1016/j.physletb.2003.10.018

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title = "Hard photodisintegration of a proton pair in 3He",

abstract = "Hard photodisintegration of the deuteron has been extensively studied in order to understand the dynamics of the transition from hadronic to quark-gluon descriptions of the strong interaction. In this Letter, we discuss the extension of this program to hard photodisintegration of a pp pair in the 3He nucleus. Experimental confirmation of new features predicted here for the suggested reaction would advance our understanding of hard nuclear reactions. A main prediction, in contrast with low-energy observations, is that the pp breakup cross section is not much smaller than the one for pn break up. In some models, the energy-dependent oscillations observed for pp scattering are predicted to appear in the γ 3He → pp + n reaction. Such an observation would open up a completely new field in studies of color coherence phenomena in hard nuclear reactions. We also demonstrate that, in addition to the energy dependence, the measurement of the light-cone momentum distribution of the recoil neutron provides an independent test of the underlying dynamics of hard disintegration.",

keywords = "Hard reactions, Photodisintegration, QCD",

author = "Brodsky, {S. J.} and L. Frankfurt and R. Gilman and Hiller, {J. R.} and Miller, {G. A.} and E. Piasetzky and M. Sargsian and M. Strikman",

note = "Funding Information: We thank A. Radyushkin and L. Kondratyuk for useful discussions. The Stanford Linear Accelerator (supporting in part S.J.B.) is funded by the Department of Energy under Contract No. DE-AC03-76SF00515. The Southeastern Universities Research Association operates the Thomas Jefferson National Accelerator Facility (supporting in part S.J.B., R.G. and M.S.) under US DOE Contract DE-AC05-84ER40150. R.G. acknowledges the support of the US National Science Foundation, grant PHY-00-98642. J.R.H. acknowledges the support of the US DOE under Contract DE-FG02-98ER41087. G.A.M. acknowledges the support of the US DOE under Contract DE-FG03-97ER41014. E.P. is supported by the Israel Science Foundation founded by the Israel Academy of Science and Humanities. M.S. acknowledges the support of the US DOE under Contract DE-FG02-01ER-41172.",

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doi = "10.1016/j.physletb.2003.10.018",

language = "English (US)",

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T1 - Hard photodisintegration of a proton pair in 3He

AU - Brodsky, S. J.

AU - Frankfurt, L.

AU - Gilman, R.

AU - Hiller, J. R.

AU - Miller, G. A.

AU - Piasetzky, E.

AU - Sargsian, M.

AU - Strikman, M.

N1 - Funding Information: We thank A. Radyushkin and L. Kondratyuk for useful discussions. The Stanford Linear Accelerator (supporting in part S.J.B.) is funded by the Department of Energy under Contract No. DE-AC03-76SF00515. The Southeastern Universities Research Association operates the Thomas Jefferson National Accelerator Facility (supporting in part S.J.B., R.G. and M.S.) under US DOE Contract DE-AC05-84ER40150. R.G. acknowledges the support of the US National Science Foundation, grant PHY-00-98642. J.R.H. acknowledges the support of the US DOE under Contract DE-FG02-98ER41087. G.A.M. acknowledges the support of the US DOE under Contract DE-FG03-97ER41014. E.P. is supported by the Israel Science Foundation founded by the Israel Academy of Science and Humanities. M.S. acknowledges the support of the US DOE under Contract DE-FG02-01ER-41172.

PY - 2004/1/1

Y1 - 2004/1/1

N2 - Hard photodisintegration of the deuteron has been extensively studied in order to understand the dynamics of the transition from hadronic to quark-gluon descriptions of the strong interaction. In this Letter, we discuss the extension of this program to hard photodisintegration of a pp pair in the 3He nucleus. Experimental confirmation of new features predicted here for the suggested reaction would advance our understanding of hard nuclear reactions. A main prediction, in contrast with low-energy observations, is that the pp breakup cross section is not much smaller than the one for pn break up. In some models, the energy-dependent oscillations observed for pp scattering are predicted to appear in the γ 3He → pp + n reaction. Such an observation would open up a completely new field in studies of color coherence phenomena in hard nuclear reactions. We also demonstrate that, in addition to the energy dependence, the measurement of the light-cone momentum distribution of the recoil neutron provides an independent test of the underlying dynamics of hard disintegration.

AB - Hard photodisintegration of the deuteron has been extensively studied in order to understand the dynamics of the transition from hadronic to quark-gluon descriptions of the strong interaction. In this Letter, we discuss the extension of this program to hard photodisintegration of a pp pair in the 3He nucleus. Experimental confirmation of new features predicted here for the suggested reaction would advance our understanding of hard nuclear reactions. A main prediction, in contrast with low-energy observations, is that the pp breakup cross section is not much smaller than the one for pn break up. In some models, the energy-dependent oscillations observed for pp scattering are predicted to appear in the γ 3He → pp + n reaction. Such an observation would open up a completely new field in studies of color coherence phenomena in hard nuclear reactions. We also demonstrate that, in addition to the energy dependence, the measurement of the light-cone momentum distribution of the recoil neutron provides an independent test of the underlying dynamics of hard disintegration.

KW - Hard reactions

KW - Photodisintegration

KW - QCD

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VL - 578

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

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

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