Novel transversity properties in semi-inclusive deep inelastic scattering

Gamberg, Leonard; Goldstein, Gary R.; Oganessyan, K.

doi:10.1103/physrevd.67.071504

Cited by 123 publications

(164 citation statements)

References 44 publications

(94 reference statements)

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“…Ref. [168]. The d quark Sivers function turns out to have the opposite sign compared to the u quark one and to be much smaller in size; again h ⊥ 1 ≃ f ⊥ 1T .…”

Section: Models and Constraints For Tmd Distributionsmentioning

confidence: 99%

“…(77), due to kinematical (k ⊥ /Q) 2 effects. Moreover, in the TMD approach including spin effects, an additional contribution appears, coming from the convolution of the Boer-Mulders and the Collins functions [108,168,279,87].…”

Section: Azimuthal Dependence In Unpolarized Sidismentioning

confidence: 99%

“…The same relation was found in Refs. [167,168], still with a scalar spectator but adopting a Gaussian form factor. In both cases a negative f ⊥ 1T for u quarks came out.…”

Section: Models and Constraints For Tmd Distributionsmentioning

confidence: 99%

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Azimuthal and single spin asymmetries in hard scattering processes

D’Alesio

Murgia

2008

Progress in Particle and Nuclear Physics

181

100

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In this article we review the present understanding of azimuthal and single spin asymmetries for inclusive and semi-inclusive particle production in unpolarized and polarized hadronic collisions at high energy and moderately large transverse momentum. After summarizing the experimental information available, we discuss and compare the main theoretical approaches formulated in the framework of perturbative QCD. We then present in some detail a generalization of the parton model with inclusion of spin and intrinsic transverse momentum effects. In this context, we extensively discuss the phenomenology of azimuthal and single spin asymmetries for several processes in different kinematical configurations. A comparison with the predictions of other approaches, when available, is also given. We finally emphasize some relevant open points and challenges for future theoretical and experimental investigation.

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“…Ref. [168]. The d quark Sivers function turns out to have the opposite sign compared to the u quark one and to be much smaller in size; again h ⊥ 1 ≃ f ⊥ 1T .…”

Section: Models and Constraints For Tmd Distributionsmentioning

confidence: 99%

Section: Azimuthal Dependence In Unpolarized Sidismentioning

confidence: 99%

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Azimuthal and single spin asymmetries in hard scattering processes

D’Alesio

Murgia

2008

Progress in Particle and Nuclear Physics

181

100

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“…The precise form of this correlation is given by the prefactors of the TMDs in Eqs. (3)- (5). In particular, the TMDs g 1L and h 1 describe the strength of a correlation between a longitudinal/transverse target polarization and a longitudinal/ transverse parton polarization.…”

Section: A Definitionsmentioning

confidence: 99%

“…R ðc ";qq 2 q 3 # 2 3 Þ Ã c #;qq 2 q 3 " 2 3 ; (50h) 5 In the 3Q approach, the spectator system consists of two quarks. It is straightforward to generalize the expression for helicity amplitudes to any kind of spectator system, as the latter is integrated out.…”

Section: B Overlap Representation Of the Tmds In The Canonical-spin mentioning

confidence: 99%

Origin of model relations among transverse-momentum dependent parton distributions

Lorcé

Pasquini

2011

Phys. Rev. D

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Transverse-momentum dependent parton distributions (TMDs) are studied in the framework of quark models. In particular, quark-model relations among TMDs are reviewed, elucidating their physical origin in terms of the quark-spin structure in the nucleon. The formal aspects of the derivation of these relations are complemented with explicit examples, emphasizing how and to which extent the conditions which lead to relations among TMDs are implemented in different classes of quark models.

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The Drell-Yan process with pions and polarized nucleons

Bastami

Parsamyan

Pasquini

et al. 2021

J. High Energ. Phys.

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The Drell-Yan process provides important information on the internal struc- ture of hadrons including transverse momentum dependent parton distribution functions (TMDs). In this work we present calculations for all leading twist structure functions de- scribing the pion induced Drell-Yan process. The non-perturbative input for the TMDs is taken from the light-front constituent quark model, the spectator model, and available parametrizations of TMDs extracted from the experimental data. TMD evolution is im- plemented at Next-to-Leading Logarithmic precision for the first time for all asymmetries. Our results are compatible with the first experimental information, help to interpret the data from ongoing experiments, and will allow one to quantitatively assess the models in future when more precise data will become available.

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Novel transversity properties in semi-inclusive deep inelastic scattering

Cited by 123 publications

References 44 publications

Azimuthal and single spin asymmetries in hard scattering processes

Azimuthal and single spin asymmetries in hard scattering processes

Origin of model relations among transverse-momentum dependent parton distributions

The Drell-Yan process with pions and polarized nucleons

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