<i>A</i>dependence of photoproduced dijets

Naples, D.; Akchurin, N.; Birmingham, P.; Breuer, H.; Cc, Chang; Cihangir, S.; Corcoran,; Wl, Davis; Hr, Gustafson; Holmgren, H. D.; Kasper, P.; Lincoln, D.; Mj, Longo; Marraffino, J. M.; McPherson, James Alan; He, M.; Morrow, Greg; Gs, Mutchler; Onel, Y.; Gp, Thomas; Mm, Traynor; Jw, Waters; Ms, Webster; Xu, Jie; Zhu, Quan

doi:10.1103/physrevlett.72.2341

Cited by 24 publications

(40 citation statements)

References 22 publications

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“…The broadening of out-of-plane transverse momentum squared, δ k 2 T ≈ 2 − 3 GeV 2 on heavy nuclei, is more than an order of magnitude larger than that in the Drell-Yan reaction. A smaller effect, δ k 2 T ≈ 1 GeV 2 was observed in experiment E683 [2] in photoproduction of di-jets with transfer momenta, p T > 3 GeV . Nevertheless, in both cases nuclear effects substantially exceed what is known for Drell-Yan reaction.…”

Section: Introductionmentioning

confidence: 98%

“…Indeed, α is usually A-independent or decreases with A. On the other hand, k 2 T rises with A [1,2]. However, the derivation of (4), (5) silently assumed n ≪ A, what is true only for heavy nuclei.…”

Section: Nuclear Broadening Of Transverse Momenta Versus A-dependencementioning

confidence: 99%

“…Thus the accuracy of (12) is about ±0.15 GeV 2 for heavy nuclei, whereas the whole nuclear contribution, δ k 2 T , is a few GeV 2 [1,2].…”

Section: Di-jetsmentioning

confidence: 99%

“…However the results of analyses of di-jet events is extremely sensitive to used kinematical cuts, background of underlying events, jet finding algorithm, etc. [1,2].…”

Section: Di-jetsmentioning

confidence: 99%

“…

AbstractRecently claimed [1,2,3] anomalous nuclear effects in di-jet production are analyzed in view of multiple interaction of projectile/ejectile partons in nuclear matter. We derive model-independent relations between A-dependence of the cross section and nuclear broadening of transverse momentum.

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mentioning

confidence: 99%

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Initial/final state interaction in di-jet production off nuclei

Kopeliovich

1995

Physics Letters B

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Recently claimed [1,2,3] anomalous nuclear effects in di-jet production are analyzed in view of multiple interaction of projectile/ejectile partons in nuclear matter. We derive model-independent relations between A-dependence of the cross section and nuclear broadening of transverse momentum. Comparison with the data show that initial/final state interaction of partons participating in hard process is hard as well. This is a solid argument in favor of smallness of a color neutralization radius of a hadronizing highly virtual quark.

show abstract

Section: Introductionmentioning

confidence: 98%

Section: Nuclear Broadening Of Transverse Momenta Versus A-dependencementioning

confidence: 99%

“…Thus the accuracy of (12) is about ±0.15 GeV 2 for heavy nuclei, whereas the whole nuclear contribution, δ k 2 T , is a few GeV 2 [1,2].…”

Section: Di-jetsmentioning

confidence: 99%

“…However the results of analyses of di-jet events is extremely sensitive to used kinematical cuts, background of underlying events, jet finding algorithm, etc. [1,2].…”

Section: Di-jetsmentioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

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Initial/final state interaction in di-jet production off nuclei

Kopeliovich

1995

Physics Letters B

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xF dependence of the Drell-Yan transverse momentum broadening

2000

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Nuclear dependence asymmetries in direct photon production

Shen

Luo

2000

Physics Letters B

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We study the nuclear dependences of high-p T jet cross sections in one photon and one jet production in proton-nucleus collisions. We find that there exist asymmetries between the outgoing jets and photons. A convincing reason responsible for those asymmetries are demonstrated in perturbative QCD. Significant nuclear enhancements are also found in the inclusive jet cross sections.Anomalous nuclear dependences are observed in hadron-nucleus scatterings [1], as well as in some extensive experimental data [2,3]. It is shown that the inclusive cross sections for single high-p T particles rise rather faster than proportional to the atomic number A of the nuclear target, while a linear A dependence is naively expected in single scattering model. This behavior is often described as due to multiple scatterings of the partons in the nuclear matter, primarily due to double scatterings [4,5,6,7].In ref.[5], M. Luo, J. Qiu and G. Sterman showed that the anomalous nuclear enhancements in deeply inelastic scatterings and photoproductions could be described naturally in perturbative QCD, in term of a higher twist formalism. They presented the details of the use of factorization at higher twist to describe multiple scattering in nuclei. The contribution from

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Adependence of photoproduced dijets

Cited by 24 publications

References 22 publications

Initial/final state interaction in di-jet production off nuclei

Initial/final state interaction in di-jet production off nuclei

xF dependence of the Drell-Yan transverse momentum broadening

Nuclear dependence asymmetries in direct photon production

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