Transverse spin effects in hard semi-inclusive collisions

Abstract

The nucleons (protons and neutrons) are by far the most abundant form of matter in our visible Universe; they are composite particles made of quarks and gluons, the fundamental quanta of Quantum Chromo Dynamics (QCD). The usual interpretation of the nucleon dynamics in high energy interactions is often limited to a simple one-dimensional picture of a fast moving nucleon as a collection of co-linearly moving quarks and gluons (partons), interacting accordingly to perturbative QCD rules. However, massive experimental evidence shows that, in particular when transverse spin dependent observables are involved, such a simple picture is not adequate. The intrinsic transverse motion of partons has to be taken into account; this opens the way to a new, truly 3-dimensional (3D) study of the nucleon structure. A review of the main experimental data, their interpretation and understanding in terms of new transverse momentum dependent partonic distributions, and the progress in building a 3D imaging of the nucleon is presented.

arXiv comment75 pages, 23 figures, accepted for publication in "Progress in Particle and Nuclear Physics"

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Cited by in corpus (24)

• The proton charge radius
• Precision Studies of QCD in the Low Energy Domain of the EIC
• Jet-based measurements of Sivers and Collins asymmetries at the future Electron-Ion Collider
• Transverse Lambda production at the future Electron-Ion Collider
• Structure of the nucleon at leading and subleading twist in the covariant parton model
• Observation of Beam Spin Asymmetries in the Process $ep\to e{\pi }^{+}{\pi }^{-}X$ with CLAS12
• Multidifferential study of identified charged hadron distributions in $Z$-tagged jets in proton-proton collisions at $\sqrt{s}=$13 TeV
• Joint thrust and TMD resummation in electron-positron and electron-proton collisions
• General helicity formalism for two-hadron production in $e^{+}{e}^{-}$ annihilation within a TMD approach
• Sub-leading twist transverse momentum dependent parton distributions in the light-front quark-diquark model
• Twist-4 T-even proton TMDs in the light-front quark-diquark model
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• Inclusive and semi-inclusive production of spin-3/2 hadrons in $e^{+}{e}^{-}$ annihilation
• Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of ${\rho }^0$ mesons
• On the extraction of the valence transversity distributions from SIDIS data
• Gluon generalized transverse momentum dependent parton distributions and Wigner functions of the Proton
• Semi-inclusive deep inelastic scattering off a tensor-polarized spin-1 target
• Polarized vector meson production in semi-inclusive DIS
• Investigating the transverse momentum dependent gluon Sivers function in quarkonium production at $pp$ colliders
• Transverse spin polarization as a novel probe of medium-induced transverse-momentum-broadening effect
• Complete lowest order radiative corrections in semi-inclusive scattering of polarized particles
• Kotzinian-Mulders effect in semi-inclusive DIS within TMD factorization
• Triple Regge exchange and transverse single-spin asymmetries of the very forward neutral pion production in polarized $p+p$ collisions
• Measurement of transverse single-spin asymmetries for dijet production in polarized proton-proton collisions at $\sqrt{\mathbf{s}}$ = 200 $\mathrm{GeV}$