Anisotropy in Dijet Production in Exclusive and Inclusive Processes

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

doi:10.48550/arxiv.2010.10774

Cited by 7 publications

(8 citation statements)

References 60 publications

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“…This is in contrast to the more well studied Sudakov (or back-to-back) region (see e.g. [57,58]). To achieve this resummation, we will apply the light-ray OPE formalism [9,12,17,37,38].…”

contrasting

confidence: 57%

Quantum Interference in Jet Substructure from Spinning Gluons

Chen,

Moult,

Zhu

2020

Preprint

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Collimated sprays of hadrons, called jets, are an emergent phenomenon of Quantum Chromodynamics (QCD) at collider experiments, whose detailed internal structure encodes valuable information about the interactions of high energy quarks and gluons, and their confinement into color-neutral hadrons. The flow of energy within jets is characterized by correlation functions of energy flow operators, with the three-point correlator, being the first correlator with non-trivial shape dependence, playing a special role in unravelling the dynamics of QCD. In this Letter we initiate a study of the three-point energy correlator to all orders in the strong coupling constant, in the limit where two of the detectors are squeezed together. We show that by rotating the two squeezed detectors with respect to the third by an angle φ, a cos(2φ) dependence arising from the quantum interference between intermediate virtual gluons with +/− helicity is imprinted on the detector. This can be regarded as a double slit experiment performed with jet substructure, and it provides a direct probe of the ultimately quantum nature of the substructure of jets, and of transverse spin physics in QCD.To facilitate our all-orders analysis, we adopt the Operator Product Expansion (OPE) for light-ray operators in conformal field theory and develop it in QCD. Our application of the light-ray OPE in real world QCD establishes it as a powerful theoretical tool with broad applications for the study of jet substructure.

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“…This is in contrast to the more well studied Sudakov (or back-to-back) region (see e.g. [57,58]). To achieve this resummation, we will apply the light-ray OPE formalism [9,12,17,37,38].…”

contrasting

confidence: 57%

Quantum Interference in Jet Substructure from Spinning Gluons

Chen,

Moult,

Zhu

2020

Preprint

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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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“…These non-trivial azimuthal angle dependence of the soft functions can give rise to additional azimuthal angle correlations for electron-jet production. For example, it was shown in [81,82] that some novel azimuthal angle correlations can arise from the soft radiation in back-to-back dijet production in unpolarized proton-proton collisions, which involve φ q − φ J . In general, our formalism would naturally lead to such an azimuthal dependence in the unpolarized scattering if one realizes that the azimuthal dependence in φ b − φ J would translate to the φ q − φ J dependence after the Fourier transform from b back to q T space.…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Spin asymmetries in electron-jet production at the future electron ion collider

Kang,

Lee,

Shao

et al. 2021

Preprint

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We study all the possible spin asymmetries that can arise in back-to-back electron-jet production, ep → e + jet + X, as well as the associated jet fragmentation process, ep → e+jet(h)+X, in electron-proton collisions. We derive the factorization formalism for these spin asymmetries and perform the corresponding phenomenology for the kinematics relevant to the future electron ion collider. In the case of unpolarized electron-proton scattering, we also give predictions for azimuthal asymmetries for the HERA experiment. This demonstrates that electron-jet production is an outstanding process for probing unpolarized and polarized transverse momentum dependent parton distribution functions and fragmentation functions.

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Anisotropy in Dijet Production in Exclusive and Inclusive Processes

Cited by 7 publications

References 60 publications

Quantum Interference in Jet Substructure from Spinning Gluons

Quantum Interference in Jet Substructure from Spinning Gluons

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

Spin asymmetries in electron-jet production at the future electron ion collider

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