Dijet asymmetry in the resummation improved perturbative QCD approach

Chen, Lin; Qin, Guang-You; Wei, Shu-Yi; Xiao, Bo-Wen; Zhang, Hanzhong

doi:10.1016/j.physletb.2018.06.002

Cited by 38 publications

(14 citation statements)

References 75 publications

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“…2 The angular decorrelation is similar to the azimuthal decorrelation in hadronic collisions, calculated at next-to-leading logarithmic accuracy in refs. [16][17][18][19].…”

Section: Contentsmentioning

confidence: 99%

Transverse momentum dependent distributions in e+e− and semi-inclusive deep-inelastic scattering using jets

Gutiérrez-Reyes

Scimemi

Waalewijn

et al. 2019

J. High Energ. Phys.

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The extraction of transverse momentum dependent distributions (TMDs) in semiinclusive deep inelastic scattering (SIDIS) is complicated by the presence of both initial-and final-state nonperturbative physics. We recently proposed measuring jets (instead of hadrons) as a solution, showing that for the Winner-Take-All jet axis the same factorization formulae valid for hadrons applied to jets of arbitrary size. This amounts to simply replacing TMD fragmentation functions by our TMD jet functions. In this paper we present the calculation of these jet functions at one loop. We obtain phenomenological results for e + e − → dijet (Belle II, LEP) and SIDIS (HERA, EIC) with a jet, building on the arTeMiDe code. Surprisingly, we find that the limit of large jet radius describes the full R results extremely well, and we extract the two-loop jet function in this limit using Event2, allowing us to achieve N 3 LL accuracy. We demonstrate the perturbative convergence of our predictions and explore the kinematic dependence of the cross section. Finally, we investigate the sensitivity to nonperturbative physics, demonstrating that jets are a promising probe of proton structure.

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“…2 The angular decorrelation is similar to the azimuthal decorrelation in hadronic collisions, calculated at next-to-leading logarithmic accuracy in refs. [16][17][18][19].…”

Section: Contentsmentioning

confidence: 99%

Transverse momentum dependent distributions in e+e− and semi-inclusive deep-inelastic scattering using jets

Gutiérrez-Reyes

Scimemi

Waalewijn

et al. 2019

J. High Energ. Phys.

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“…This is closely related to the azimuthal decorrelation measured at the Tevatron [16], RHIC [17] and LHC [18,19], and calculated to next-to-leading logarithmic accuracy in Refs. [20][21][22].…”

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confidence: 99%

Transverse-Momentum-Dependent Distributions with Jets

et al. 2018

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We investigate the use of jets to measure transverse momentum dependent distributions (TMDs). The example we use to present our framework is the dijet momentum decorrelation at lepton colliders. Translating this momentum decorrelation into an angle θ 1, we analyze the factorization of the cross section for the cases θ R, θ ∼ R and θ R, where R is the jet radius. Critically, for the Winner-Take-All axis, the jet TMD has the same double-scale renormalization group evolution as TMD fragmentation functions for all radii R. TMD fragmentation functions in factorization theorems may then simply be replaced by the jet TMDs we calculate, and all ingredients to perform the resummation to next-to-next-to-leading logarithmic accuracy are available. Our approach also applies to semi-inclusive deep inelastic scattering (SIDIS), where a jet instead of a hadron is measured in the final state, and we find a clean method to probe the intrinsic transverse momentum of quarks and gluons in the proton that is less sensitive to final-state nonperturbative effects.

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“…On the other hand, jet p Tbroadening arising from overall deflection and in-medium parton shower should be directly sensitive to any microscopic structure of the QGP. One promising observable for this purpose is the dihadron or dijet azimuthal angle Δϕ correlations [18][19][20][21][22][23][24]. In pp collisions, the dijet Δϕ correlation can be described using the Sudakov resummation framework established in Refs.…”

Section: Introductionmentioning

confidence: 99%

Medium-induced transverse momentum broadening via forward dijet correlations

et al. 2020

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Dijet azimuthal angle correlation is arguably one of the most direct probes of the medium-induced broadening effects. The evidence for such broadening, however, is not yet clearly observed within the precision of current midrapidity measurements at RHIC and the LHC. We show that the dijet correlation in forward rapidity from the future LHC RUN3, aided by forward detector upgrades, can reveal this broadening thanks to the steeper jet spectra, suppressed vacuum radiations and lower underlying event background, with a sensitivity comparable to that of the future high-luminosity Au þ Au run at RHIC. Dijet correlation measurements at the two facilities together can provide powerful constraints on the temperature dependence of medium transport properties.

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Dijet asymmetry in the resummation improved perturbative QCD approach

Cited by 38 publications

References 75 publications

Transverse momentum dependent distributions in e+e− and semi-inclusive deep-inelastic scattering using jets

Transverse momentum dependent distributions in e+e− and semi-inclusive deep-inelastic scattering using jets

Transverse-Momentum-Dependent Distributions with Jets

Medium-induced transverse momentum broadening via forward dijet correlations

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