Transverse-momentum-dependent parton distributions up to N3LL from Drell-Yan data

Bacchetta, Alessandro; Bertone, Valerio; Bissolotti, Chiara; Bozzi, Giuseppe; Delcarro, Filippo; Piacenza, Fulvio; Radici, Marco

doi:10.1007/jhep07(2020)117

Cited by 151 publications

(197 citation statements)

References 102 publications

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“…On the phenomenological side, the matching essentially reduces the parametric JHEP12(2020)145 freedom for TMD ansatzes. The modern phenomenology of TMD distributions is grounded on the matching relations and demonstrates perfect agreement with a large amount of experimental data [7,8].…”

Section: Introductionmentioning

confidence: 70%

Calculation of transverse momentum dependent distributions beyond the leading power

Moos

Vladimirov

2020

J. High Energ. Phys.

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We compute the contribution of twist-2 and twist-3 parton distribution functions to the small-b expansion for transverse momentum dependent (TMD) distributions at all powers of b. The computation is done by the twist-decomposition method based on the spinor formalism for all eight quark TMD distributions. The newly computed terms are accompanied by the prefactor (M2b2)n and represent the target-mass corrections to the resummed cross-section. For the first time, a non-trivial expression for the pretzelosity distribution is derived.

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Section: Introductionmentioning

confidence: 70%

Calculation of transverse momentum dependent distributions beyond the leading power

Moos

Vladimirov

2020

J. High Energ. Phys.

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“…One key target of these experiments are transverse momentum dependent PDFs (TMDPDFs), which provide information about partons in transverse-momentum space and make accessible new correlations between the partonic and hadronic spin. Although TMDPDFs are harder to measure experimentally than their longitudinal counterparts, a significant effort has built up in recent years to fit these quantities with global data from Drell-Yan and semi-inclusive deep inelastic scattering processes [5][6][7][8][9][10]. It is crucial to develop a deeper theoretical knowledge of TMDPDFs to JHEP09(2020)099 complement ongoing experimental and global fit analyses and to enhance our understanding of these fundamental hadron properties.…”

Section: Introductionmentioning

confidence: 99%

One-loop matching for spin-dependent quasi-TMDs

Ebert

Schindler

Stewart

et al. 2020

J. High Energ. Phys.

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Transverse momentum dependent parton distribution functions (TMDPDFs) provide a unique probe of the three-dimensional spin structure of hadrons. We construct spin-dependent quasi-TMDPDFs that are amenable to lattice QCD calculations and that can be used to determine spin-dependent TMDPDFs. We calculate the short-distance coefficients connecting spin-dependent TMDPDFs and quasi-TMDPDFs at one-loop order. We find that the helicity and transversity distributions have the same coefficient as the unpolarized TMDPDF. We also argue that the same is true for pretzelosity and that this spin universality of the matching will hold to all orders in αs. Thus, it is possible to calculate ratios of these distributions as a function of longitudinal momentum and transverse position utilizing simpler Wilson line paths than have previously been considered.

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“…All others are, to the best of our knowledge, novel results. 8 As we will discuss below, these sum rules are generically useful as constraints in phenomenological fits where experimental data is scarce, and when developing fragmentation models. The non-zero sum rules, however, have a significance that goes well beyond that.…”

Section: Sum Rules Compendium and Discussionmentioning

confidence: 99%

“…Unraveling hadronization dynamics is not only of fundamental importance to understand the emergence and nature of massive visible matter, but also an essential tool in hadron tomography studies at current and future facilities, including the 12 GeV program at Jefferson Lab [1] and a future US-based Electron-Ion Collider [2,3]. For example, in Semi-Inclusive Deep Inelastic Scattering (SIDIS), measuring the transverse momentum of one of the final state hadrons can crucially provide a handle into the transverse motion of its parent quarks and gluons inside the hadron target [4][5][6][7][8][9][10][11][12][13][14][15][16]. Understanding the hadronization mechanism is therefore critically important to quantitatively connect the initial, short-scale lepton-quark scattering hidden by confinement, with the measurable properties of hadrons as they hit the detectors.…”

Section: Introductionmentioning

confidence: 99%

On the connection between quark propagation and hadronization

Accardi

Signori

2020

Eur. Phys. J. C

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We investigate the properties and structure of the recently discussed "fully inclusive jet correlator", namely, the gauge-invariant field correlator characterizing the final state hadrons produced by a free quark as this propagates in the vacuum. Working at the operator level, we connect this object to the single-hadron fragmentation correlator of a quark, and exploit a novel gauge invariant spectral decomposition technique to derive a complete set of momentum sum rules for quark fragmentation functions up to twist-3 level; known results are recovered, and new sum rules proposed. We then show how one can explicitly connect quark hadronization and dynamical quark mass generation by studying the inclusive jet's gauge-invariant mass term. This mass is, on the one hand, theoretically related to the integrated chiralodd spectral function of the quark, and, on the other hand, is experimentally accessible through the E and E twist-3 fragmentation function sum rules. Thus, measurements of these fragmentation functions in deep inelastic processes provide one with an experimental gateway into the dynamical generation of mass in Quantum Chromodynamics.

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Transverse-momentum-dependent parton distributions up to N3LL from Drell-Yan data

Cited by 151 publications

References 102 publications

Calculation of transverse momentum dependent distributions beyond the leading power

Calculation of transverse momentum dependent distributions beyond the leading power

One-loop matching for spin-dependent quasi-TMDs

On the connection between quark propagation and hadronization

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