Probing the origin of the EMC effect via tagged structure functions of the deuteron

Melnitchouk, Wally; Sargsian, Misak; Strikman, M.

doi:10.1007/s002180050372

Cited by 92 publications

(130 citation statements)

References 47 publications

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“…A similar approximation is used for the FSI studies in semi-inclusive DIS scattering [1,[6][7][8][9][10][11] as well as for studies of color transparency phenomena in which the intermediate state represents an off-shell coherent composite system with reduced interaction cross section (see e.g. [13,[23][24][25][26][27][28]).…”

Section: B Main Approximationsmentioning

confidence: 99%

“…At larger spectator momenta, high density configurations of the deuteron will occur in which the proton and neutron are in very close proximity to each other. Under these circumstances the partonic structure of nucleons could strongly modify [1] with the possibility of two nucleons merging into six quark configurations at asymptotically large relative momenta in the deuteron [2,3]. Consequently, experiments that explore these kinematics can be used to study the modifications of nucleon properties and the role of quark degrees of freedom in these situations.…”

Section: Introductionmentioning

confidence: 99%

“…Thus in this respect FSI becomes very important part of the semi-inclusive DIS process. To quantify the effects of FSI in DIS, model calculations are needed and this has already resulted in the development of several theoretical approaches [1,[6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Final-state interactions in semi-inclusive deep inelastic scattering off the deuteron

Cosyn

Sargsian

2011

Phys. Rev. C

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Semi-inclusive deep inelastic scattering off the Deuteron with production of a slow nucleon in recoil kinematics is studied in the virtual nucleon approximation, in which the final state interaction (FSI) is calculated within generalized eikonal approximation. The cross section is derived in a factorized approach, with a factor describing the virtual photon interaction with the off-shell nucleon and a distorted spectral function accounting for the final-state interactions. One of the main goals of the study is to understand how much the general features of the diffractive high energy soft rescattering accounts for the observed features of FSI in deep inelastic scattering(DIS).Comparison with the Jefferson Lab data shows good agreement in the covered range of kinematics. Most importantly, our calculation correctly reproduces the rise of the FSI in the forward direction of the slow nucleon production angle.By fitting our calculation to the data we extracted the W and Q 2 dependences of the total cross section and slope factor of the interaction of DIS products, X, off the spectator nucleon. This analysis shows the XN scattering cross section rising with W and decreasing with an increase of Q 2 . Finally, our analysis points at a largely suppressed off-shell part of the rescattering amplitude.

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Section: B Main Approximationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Final-state interactions in semi-inclusive deep inelastic scattering off the deuteron

Cosyn

Sargsian

2011

Phys. Rev. C

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“…and the relation between the light-cone and non-relativistic deuteron wave functions [16,[38][39][40] at small internal momenta:…”

Section: Cross Section Of Thementioning

confidence: 99%

Hard breakup of the deuteron into twoΔisobars

Granados

Sargsian

2011

Phys. Rev. C

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We study high energy photodisintegration of the deuteron into two ∆-isobars at large center of mass angles within the QCD hard rescattering model (HRM). According to the HRM, the process develops in three main steps: the photon knocks a quark from one of the nucleons in the deuteron; the struck quark rescatters off a quark from the other nucleon sharing the high energy of the photon; then the energetic quarks recombine into two outgoing baryons which have large transverse momenta. Within the HRM, the cross section is expressed through the amplitude of pn → ∆∆ scattering which we evaluated based on the quark-interchange model of hard hadronic scattering. Calculations show that the angular distribution and the strength of the photodisintegration is mainly determined by the properties of the pn → ∆∆ scattering. We predict that the cross section of the deuteron breakup to ∆ ++ ∆ − is 4-5 times larger than that of the breakup to the ∆ + ∆ 0 channel. Also, the angular distributions for these two channels are markedly different. These can be compared with the predictions based on the assumption that two hard ∆-isobars are the result of the disintegration of the preexisting ∆∆ components of the deuteron wave function. In this case, one expects the angular distributions and cross sections of the breakup in both ∆ ++ ∆ − and ∆ + ∆ 0 channels to be similar.

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“…It has been suggested to investigate intrinsic properties of bound nucleons in semi-inclusive deep-inelastic scattering from nuclei [235,251,252,253]. Measuring the scattered lepton in coincidence with the residual nuclear system should provide detailed information on changes in bound nucleon structure functions.…”

Section: Further Notesmentioning

confidence: 99%

Nuclear deep-inelastic lepton scattering and coherence phenomena

Piller¹,

Weise²

2000

Physics Reports

176

241

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This review outlines our present experimental knowledge and theoretical understanding of deepinelastic scattering on nuclear targets. The emphasis is primarily on nuclear coherence phenomena, such as shadowing, where the key physics issue is the exploration of hadronic and quark-gluon fluctuations of a high-energy virtual photon and their passage through the nuclear medium. New developments in polarized deep-inelastic scattering on nuclei are also discussed, and more conventional binding and Fermi motion effects are summarized. The report closes with a brief outlook on vector meson electroproduction, nuclear shadowing at very large Q 2 and the physics of high parton densities in QCD.

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Probing the origin of the EMC effect via tagged structure functions of the deuteron

Cited by 92 publications

References 47 publications

Final-state interactions in semi-inclusive deep inelastic scattering off the deuteron

Final-state interactions in semi-inclusive deep inelastic scattering off the deuteron

Hard breakup of the deuteron into twoΔisobars

Nuclear deep-inelastic lepton scattering and coherence phenomena

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