Azimuthal Angular Asymmetry of Soft Gluon Radiation in Jet Production

Hatta, Yoshitaka; Xiao, Bo-Wen; Yuan, Feng; Zhou, Jian

doi:10.48550/arxiv.2106.05307

Cited by 7 publications

(10 citation statements)

References 109 publications

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“…A calculation based on TMD distributions is found in Ref. [32,33] and further investigated in [34,35]. However, in the region ∆φ 12 → π soft-gluon effects are expected which lead to so-called factorization -breaking [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method

Abdulhamid,

Al-Mashad,

Martinez

et al. 2021

Preprint

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The azimuthal correlation, ∆φ 12 , of high transverse momentum jets in collisions at √ s = 13 TeV is studied by applying PB-TMD distributions to NLO calculations via MCatNLO together with the PB-TMD parton shower. A very good description of the cross section as a function of ∆φ 12 is observed. In the back-to-back region of ∆φ 12 → π, a very good agreement is observed with the PB-TMD Set 2 distributions while significant deviations are obtained with the PB-TMD Set 1 distributions. Set 1 uses the evolution scale while Set 2 uses transverse momentum as an argument in α s , and the above observation therefore confirms the importance of an appropriate soft-gluon coupling in angular ordered parton evolution. The total uncertainties of the predictions are dominated by the scale uncertainties of the matrix element, while the uncertainties coming from the PB-TMDs and the corresponding PB-TMD shower are very small. The ∆φ 12 measurements are also compared with predictions using MCatNLO together PYTHIA8, illustrating the importance of details of the parton shower evolution.

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Section: Introductionmentioning

confidence: 99%

Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method

Abdulhamid,

Al-Mashad,

Martinez

et al. 2021

Preprint

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“…We anticipate a significant reduction in the complexity of the numerical evaluation of our NLO results in this kinematic limit. At small x, this regime 16 has been extensively explored at NLO within the transverse momentum dependent (TMD) parton distribution framework [88][89][90][91].…”

Section: Discussionmentioning

confidence: 99%

Dijet impact factor in DIS at next-to-leading order in the Color Glass Condensate

Caucal,

Salazar,

Venugopalan

2021

Preprint

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We compute the next-to-leading order impact factor for inclusive dijet production in deeply inelastic electron-nucleus scattering at small x Bj . Our computation, performed in the framework of the Color Glass Condensate effective field theory, includes all real and virtual contributions in the gluon shock wave background of all-twist lightlike Wilson line correlators. We demonstrate explicitly that the rapidity evolution of these correlators, to leading logarithmic accuracy, is described by the JIMWLK Hamiltonian. When combined with the next-to-leading order JIMWLK Hamiltonian, our results for the impact factor improve the accuracy of the inclusive dijet cross-section to O(α 2 s ln(x f /x Bj )), where x f is a rapidity factorization scale. These results are an essential ingredient in assessing the discovery potential of inclusive dijets to uncover the physics of gluon saturation at the Electron-Ion Collider.

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“…We note that the function g out (ϕ, R) is the same controlling the azimuthal dependence in jet production in ep scattering [11].…”

Section: A Explicit Evaluation Of B-space Integralsmentioning

confidence: 93%

“…This means that the resummation formula (4) leads to q T -dependent azimuthal correlations of the produced B + jet system at small-q T as observed in Refs. [10][11][12].…”

Section: The Explicit Expression Of the Symbolic Factor [(Hmentioning

confidence: 99%

“…When the colourless system is accompanied by a hard jet the resummation is significantly more complicated, due to the fact that the final state parton radiates. The problem has been addressed by several authors [8][9][10][11]. Soft-gluon radiation is accounted for by a soft-anomalous dimension which would in principle lead to colour correlations between initial and final state partons * .…”

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confidence: 99%

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Transverse-momentum resummation for boson plus jet production at hadron colliders

Buonocore,

Grazzini,

Haag

et al. 2021

Preprint

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We consider the associated production of a vector or Higgs boson with a jet in hadronic collisions. When the transverse momentum q T of the boson-jet system is much smaller than its invariant mass Q, the QCD perturbative expansion is affected by large logarithmic terms that must be resummed to all orders. We discuss the all-order resummation structure of the logarithmically enhanced contributions up to next-toleading logarithmic accuracy. Resummation is performed at the differential level with respect to the kinematical variables of the boson-jet system. Soft-parton radiation produces azimuthal correlations that are fully accounted for in our framework. We present explicit analytical results for the resummation coefficients up to next-to-leading order and next-to-leading logarithmic accuracy, that include the exact dependence on the jet radius.

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Azimuthal Angular Asymmetry of Soft Gluon Radiation in Jet Production

Cited by 7 publications

References 109 publications

Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method

Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method

Dijet impact factor in DIS at next-to-leading order in the Color Glass Condensate

Transverse-momentum resummation for boson plus jet production at hadron colliders

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