Drell-Yan process and factorization in impact parameter space

Brodsky, Stanley J.; Hebecker, Arthur; Quack, E.

doi:10.1103/physrevd.55.2584

Cited by 95 publications

(148 citation statements)

References 17 publications

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“…Neglecting the quark mass at large Q 2 and using generically one single quark flavor, the squared wave function of the qq component coupled to the longitudinally polarized photon becomes [161,162,163]:…”

Section: Nuclear Shadowing and Parton Configurations Of The Photonmentioning

confidence: 99%

Nuclear deep-inelastic lepton scattering and coherence phenomena

Piller¹,

Weise²

2000

Physics Reports

175

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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Section: Nuclear Shadowing and Parton Configurations Of The Photonmentioning

confidence: 99%

Nuclear deep-inelastic lepton scattering and coherence phenomena

Piller¹,

Weise²

2000

Physics Reports

175

241

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“…This is not a surprize, since the two processes are related by QCD factorization. The cross section of heavy photon (γ * →ll) radiation by a quark reads [29][30][31][32],…”

Section: B Diffractive Drell-yan Reactionmentioning

confidence: 99%

Diffraction in QCD

Kopeliovich¹,

Potashnikova²,

Schmidt³

2007

Braz. J. Phys.

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This lecture presents a short review of the main features of diffractive processes and QCD inspired models. It includes the following topics: (1) Quantum mechanics of diffraction: general properties; (2) Color dipole description of diffraction; (3) Color transparency; (4) Soft diffraction in hard reactions: DIS, Drell-Yan, Higgs production; (5) Why Pomerons interact weakly; (6) Small gluonic spots in the proton; (7) Diffraction near the unitarity bound: the Goulianos-Schlein "puzzle"; (8) Diffraction on nuclei: diffractive Color Glass; (9) CGC and gluon shadowing.

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“…Drell-Yan mechanism of lepton pair production in hadronic collisions at small x 2 ≪ 1 has much in common with deep-inelastic lepton scattering at small Bjorken x Bj [1]- [3] (we use the standard notations [4] x 1 − x 2 = x F and x 1 x 2 = M 2 /s, where x F and M are the Feynman variable and the effective mass of the lepton pair). Actually, the factorization theorem is a reflection of such a similarity.…”

Section: Light-cone Representation For Drell-yan Reactionmentioning

confidence: 99%

“…Actually, the factorization theorem is a reflection of such a similarity. However, for our purpose (diffraction, nuclear shadowing) it is convenient to use the light-cone representation for Drell-Yan process [1]- [3]. In the rest frame of the target proton the projectile beam hadron is surrounded by a parton cloud which contains with a small probability a lepton pair.…”

Section: Light-cone Representation For Drell-yan Reactionmentioning

confidence: 99%

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Diffractive production of Drell–Yan pairs and heavy flavors

Kopeliovich

1999

Physics Letters B

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Partonic interpretation of high-energy reactions is known to depend on a reference frame. Particularly, in the rest frame of the target Drell-Yan process looks like a freeing of the projectile ll fluctuation, rather than qq → ll annihilation. The lightcone representation for Drell-Yan reaction is very similar to that in DIS and exposes a substantial contamination of soft interactions which turns out to be dominant in diffractive production of lepton pairs and in nuclear shadowing. We estimate the fraction of diffractive events in the total Drell-Yan cross section, which scales in M 2 , and find a substantial deviation from factorization. An analogous approach is developed for diffractive production of heavy flavors.

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Drell-Yan process and factorization in impact parameter space

Cited by 95 publications

References 17 publications

Nuclear deep-inelastic lepton scattering and coherence phenomena

Nuclear deep-inelastic lepton scattering and coherence phenomena

Diffraction in QCD

Diffractive production of Drell–Yan pairs and heavy flavors

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