Dijet photoproduction at low x at next-to-leading order and its back-to-back limit

Taels, Pieter; Altinoluk, Tolga; Beuf, Guillaume; Marquet, Cyrille

doi:10.1007/jhep10(2022)184

Cited by 41 publications

(43 citation statements)

References 136 publications

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“…This is seen by imposing a physical kinematic constraint on the slow gluon phase-space that enforces both lightcone momentum and lifetime ordering of the successive gluon emissions described by B-JIMWLK evolution. Our observations in this regard, and the fact that a kinematically constrained B-JIMWLK evolution of the color correlators is required to recover the correct sign for Sudakov suppression, are in line with those noted recently in the context of inclusive dijet photoproduction at small x [54].…”

Section: Jhep11(2022)169supporting

confidence: 90%

“…We will compute here the coefficients of the double and single Sudakov logarithms at finite N c for both longitudinally and transversely polarized virtual photons. We recover the results provided in [20,54] for the double Sudakov logarithms. For the finite N c single Sudakov logarithm terms, we recover the single log contributions computed in [70,71] and additionally, a single log term whose coefficient is sensitive to the rapidity factorization scale Y f .…”

Section: Jhep11(2022)169supporting

confidence: 84%

“…Further, the expression for the impact factor is process-dependent in contrast to the evolution of the color correlators which should be universal. This rapidity factorization [42] has been shown for a number of processes at the stated leading logarithmic accuracy [43][44][45][46][47][48][49][50][51][52][53][54][55][56]. Thus far it has been demonstrated explicitly to hold at next-to-leading-logarithmic accuracy in x only for the fully inclusive DIS cross-section [42,57].…”

Section: Jhep11(2022)169mentioning

confidence: 82%

“…In this section, we will summarize the principal results of the NLO computation of the inclusive dijet cross-section in DIS presented in [1]. We will also take the opportunity to update our results, correcting minor typos and elaborating on our analysis of the real NLO impact factor following the recent study of dijet production in the photoproduction limit [54]. We will present in the main text the cross-section for longitudinally polarized virtual photons, with the transversely polarized NLO cross-section provided in the appendix C.…”

Section: Update On Nlo Results For Inclusive Dijet Production In Dismentioning

confidence: 99%

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Back-to-back inclusive dijets in DIS at small x: Sudakov suppression and gluon saturation at NLO

Caucal

Salazar

Schenke

et al. 2022

J. High Energ. Phys.

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Back-to-back dijet cross-sections in deeply inelastic scattering (DIS) at small xBj are suppressed by many-body multiple scattering and screening effects arising from gluon saturation at high parton densities. They are similarly sensitive in these kinematics to large Sudakov logarithms from soft gluon radiation. Uncovering novel physics in this DIS channel therefore requires understanding the interplay of the two phenomena. In this work, we compute the small xBj inclusive dijet DIS cross-section in back-to-back kinematics at next-to-leading order (NLO) in the Color Glass Condensate effective field theory (CGC EFT). Our result includes, for the first time, all real and virtual NLO contributions to the impact factor. These include all Sudakov double and single logarithm contributions, as well as all other finite $$ \mathcal{O} $$ O (αs) terms that contribute at this order. We demonstrate explicitly that resummations of small x and Sudakov logarithms can be performed simultaneously in the CGC EFT. This requires that the JIMWLK kernel for small x evolution of the Weizsäcker-Williams (WW) gluon distribution satisfies a kinematic constraint imposed by lifetime ordering of successive gluon emissions; the corresponding modifications to the kernel, corresponding to resummations of large double transverse logarithms, are precisely of the type required to stabilize JIMWLK evolution beyond leading logarithmicaccuracy. We compute the azimuthal harmonics of the NLO back-to-back distributions and show their sensitivity to both the unpolarized and linearly polarized WW gluon distributions. Finally, we discuss how TMD factorization is broken by an emergent saturation scale at small x.

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Section: Jhep11(2022)169supporting

confidence: 90%

Section: Jhep11(2022)169supporting

confidence: 84%

Section: Jhep11(2022)169mentioning

confidence: 82%

Section: Update On Nlo Results For Inclusive Dijet Production In Dismentioning

confidence: 99%

See 2 more Smart Citations

Back-to-back inclusive dijets in DIS at small x: Sudakov suppression and gluon saturation at NLO

Caucal

Salazar

Schenke

et al. 2022

J. High Energ. Phys.

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“…Refs. [41,42,[46][47][48][49][50][51][52][53][54][55]. In the future, we plan to perform a full Bayesian analysis to determine the likelihood distribution for all the model parameters, which will enable one to also fully take into account the propagation of model uncertainties.…”

mentioning

confidence: 99%

Proton structure functions at NLO in the dipole picture with massive quarks

Hänninen¹,

Mäntysaari²,

Paatelainen³

et al. 2022

Preprint

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We predict heavy quark production cross sections in Deep Inelastic Scattering at high energy by applying the Color Glass Condensate effective theory. We demonstrate that when the calculation is performed consistently at next-to-leading order accuracy with massive quarks it becomes possible, for the first time in the dipole picture with perturbatively calculated center-of-mass energy evolution, to simultaneously describe both light and heavy quark production data at small xBj. We furthermore show how the heavy quark cross section data provides additional strong constraints on the extracted non-perturbative initial condition for the small-xBj evolution equations.

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Single inclusive hadron production in DIS at small x: next to leading order corrections

Bergabo

Jalilian‐Marian

2023

J. High Energ. Phys.

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We calculate the one-loop corrections to single inclusive hadron production in Deep Inelastic Scattering (DIS) at small x in the forward rapidity region using the Color Glass Condensate formalism. We show that the divergent parts of the next to leading order (NLO) corrections either cancel among each other or lead to x (rapidity) evolution of the leading order (LO) dipole cross section according to the JIMWLK evolution equation and DGLAP evolution of the parton-hadron fragmentation function. The remaining finite parts constitute the NLO (αs) corrections to the LO single inclusive hadron production cross section in DIS at small x.

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Dijet photoproduction at low x at next-to-leading order and its back-to-back limit

Cited by 41 publications

References 136 publications

Back-to-back inclusive dijets in DIS at small x: Sudakov suppression and gluon saturation at NLO

Back-to-back inclusive dijets in DIS at small x: Sudakov suppression and gluon saturation at NLO

Proton structure functions at NLO in the dipole picture with massive quarks

Single inclusive hadron production in DIS at small x: next to leading order corrections

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