Twist-3 fragmentation contribution to polarized hyperon production in unpolarized hadronic collisions

Abstract

It has been known for a long time that hyperons produced in hadronic collisions are polarized perpendicular to the production plane of the reaction. This effect cannot be described by using twist-2 collinear parton correlators only. Here we compute the contribution of twist-3 fragmentation functions to the production of transversely polarized hyperons in unpolarized proton-proton collisions in the framework of collinear factorization. By taking into account the relations among the relevant twist-3 fragmentation functions which follow from the QCD equation of motion and the Lorentz invariance property of the correlators, we present the leading-order cross section for this term.

arXiv comment9 pages, 6 figures

References in corpus (39)

• The complete tree-level result up to order $1/Q$ for polarized deep-inelastic leptoproduction
• Semi-inclusive deep inelastic scattering at small transverse momentum
• Universality of soft and collinear factors in hard-scattering factorization
• Single Transverse-Spin Asymmetries in Hadronic Pion Production
• Parton Fragmentation Functions
• Single transverse-spin asymmetry in high transverse momentum pion production in pp collisions
• Twist-3 Formalism for Single Transverse Spin Asymmetry Reexamined: Semi-Inclusive Deep Inelastic Scattering
• Towards an explanation of transverse single-spin asymmetries in proton-proton collisions: the role of fragmentation in collinear factorization
• Asymmetry of Lambda Baryons in Hadronic Z^0 Decays
• Collins Fragmentation and the Single Transverse Spin Asymmetry
• Single Transverse Spin Asymmetry for Large-p_T Pion Production in Semi-Inclusive Deep Inelastic Scattering
• Gluon-Exchange in Spin-Dependent Fragmentation
• Fragmentation contribution to the transverse single-spin asymmetry in proton-proton collisions
• Lambda polarization from unpolarized quark fragmentation
• Twist-three Fragmentation Function Contribution to the Single Spin Asymmetry in pp Collisions
• Operator Constraints for Twist-3 Functions and Lorentz Invariance Properties of Twist-3 Observables
• Measurements of the Lambda_b0 -> J/psi Lambda decay amplitudes and the Lambda_b0 polarisation in pp collisions at sqrt(s) = 7 TeV
• Soft-fermion-pole contribution to single-spin asymmetry for pion production in pp collisions
• Partonic Pole Matrix Elements for Fragmentation
• Estimate of a Chiral-Odd Contribution to Single Transverse-Spin Asymmetry in Hadronic Pion Production
• Contribution of twist-3 fragmentation function to single transverse-spin asymmetry in semi-inclusive deep inelastic scattering
• Polarization in Hadronic ΛHyperon Production and Chiral-Odd Twist-3 Distribution
• Spectral analysis of gluonic pole matrix elements for fragmentation
• Transverse Lambda polarization in semi-inclusive DIS
• Three-gluon contribution to the single spin asymmetry for light hadron production in pp collision
• A model independent analysis of gluonic pole matrix elements and universality of TMD fragmentation functions
• Phenomenological constraints on $A_N$ in $p^{\uparrow }p\to \pi X$ from Lorentz invariance relations
• Measurement of the transverse polarization of $\Lambda$ and $\bar{\Lambda }$ hyperons produced in proton-proton collisions at $\sqrt{s}=7$ TeV using the ATLAS detector
• Polarization of Lambda and Anti-Lambda in 920 GeV Fixed-Target Proton-Nucleus Collisions
• Longitudinal-transverse double-spin asymmetries in single-inclusive leptoproduction of hadrons
• Transverse Polarization of Lambda and Lambda-bar Hyperons in Quasireal Photoproduction
• Single-spin asymmetries in the leptoproduction of transversely polarized $\Lambda$ hyperons
• Hyperon polarization from the twist-3 distribution in the unpolarized proton-proton collision
• Transverse spin observables in hard-scattering hadronic processes within collinear factorization
• Transverse polarization of $\Lambda$ hyperons from quasireal photoproduction on nuclei
• Twist-3 effect from the longitudinally polarized proton for $A_{LT}$ in hadron production from $pp$ collisions
• Twist-3 fragmentation effects for $A_{LT}$ in light hadron production from proton-proton collisions
• Observation of Transverse $\Lambda /\bar{\Lambda }$ Hyperon Polarization in $e^{+}{e}^{-}$ Annihilation at Belle
• Hyperon Polarization in Unpolarized Scattering Processes

Cited by in corpus (15)

• Extracting the Transverse Momentum Dependent Polarizing Fragmentation Functions
• Transverse spin effects in hard semi-inclusive collisions
• Polarized hyperon production in single-inclusive electron-positron annihilation at next-to-leading order
• Exact Relations for Twist-3 Gluon Distribution and Fragmentation Functions from Operator Identities
• The transverse polarization of $\Lambda$ hyperons in $e^{+}{e}^{-}\to {\Lambda }^{\uparrow }hX$ processes within TMD factorization
• The Polarising Fragmentation Function and the Lambda polarisation in e+ e- processes
• Twist-3 Gluon Fragmentation Contribution to Polarized Hyperon Production in Unpolarized Proton-Proton Collision
• Transverse Polarization of Hyperons Produced in Semi-Inclusive Deep Inelastic Scattering
• $\sin ({\varphi }_{\Lambda }-{\varphi }_S)$ azimuthal asymmetry in transversely polarized $\Lambda$ production in SIDIS within TMD factorization at EIC
• Predicting the $\sin {\varphi }_S$ Single-Spin-Asymmetry of $\Lambda$ Production off transversely polarized nucleon in SIDIS
• Measurement of transverse $\Lambda$ and $\bar{\Lambda }$ hyperon polarization in $p$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV
• Novel relations for twist-3 tensor-polarized fragmentation functions in spin-1 hadrons
• Investigating the transverse momentum dependent gluon Sivers function in quarkonium production at $pp$ colliders
• Twist-3 Gluon Fragmentation Contribution to Hyperon Polarization in Semi-Inclusive Deep Inelastic Scattering
• Measurement of transverse polarization of $\Lambda$ and $\bar{\Lambda }$ hyperons inside jets in $pp$ collisions at $\sqrt{s}=200$ GeV