First extraction of the $\Lambda$ polarising fragmentation function from Belle $e^{+}{e}^{-}$ data

Abstract

We present a thorough phenomenological analysis of the experimental data from Belle Collaboration for the transverse $\Lambda$ and $\bar{\Lambda }$ polarisation, measured in $e^{+}{e}^{-}$ annihilation processes, for the case of inclusive (plus a jet) and associated production with a light charged hadron. This allows for the first ever extraction of the quark polarising fragmentation function for a $\Lambda$ hyperon, a transverse momentum dependent distribution giving the probability that an unpolarised quark fragments into a transversely polarised spin-1/2 hadron.

arXiv comment6 pages, 4 figures (10 plots)

References in corpus (16)

• Fragmentation of Transversely Polarized Quarks Probed in Transverse Momentum Distributions
• The complete tree-level result up to order $1/Q$ for polarized deep-inelastic leptoproduction
• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Single-spin asymmetries: the Trento conventions
• Transversity and Collins functions from SIDIS and e+e- data
• Factorization Theorem For Drell-Yan At Low q_T And Transverse-Momentum Distributions On-The-Light-Cone
• AKK Update: Improvements from New Theoretical Input and Experimental Data
• Sivers Effect for Pion and Kaon Production in Semi-Inclusive Deep Inelastic Scattering
• The role of Cahn and Sivers effects in Deep Inelastic Scattering
• Asymmetries in polarized hadron production in e^+e^- annihilation up to order 1/Q
• Collins functions for pions from SIDIS and new e+e- data: a first glance at their transverse momentum dependence
• Lambda polarization from unpolarized quark fragmentation
• Fully-Unintegrated Parton Distribution and Fragmentation Functions at Perturbative k_T
• Observation of Transverse $\Lambda /\bar{\Lambda }$ Hyperon Polarization in $e^{+}{e}^{-}$ Annihilation at Belle
• Transverse Lambda polarization in semi-inclusive DIS
• The Polarising Fragmentation Function and the Lambda polarisation in e+ e- processes

Cited by in corpus (27)

• Extracting the Transverse Momentum Dependent Polarizing Fragmentation Functions
• Diffractive production of $\Lambda$ hyperons in the high-energy limit of strong interactions
• Transverse Lambda production at the future Electron-Ion Collider
• Isospin Symmetry of Fragmentation Functions
• Transverse $\Lambda$ Polarization in $e^{+}{e}^{-}$ collisions
• General helicity formalism for two-hadron production in $e^{+}{e}^{-}$ annihilation within a TMD approach
• Transverse Momentum Dependent Fragmentation Functions from recent BELLE data
• Universality-breaking effects in $e^{+}{e}^{-}$ hadronic production processes
• First global QCD analysis of the TMD ${\mathbf{g}}_{1\mathbf{T}}$ from semi-inclusive DIS data
• Longitudinal and transverse polarizations of $\Lambda$ hyperon in unpolarized SIDIS and $e^{+}{e}^{-}$ annihilation
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• The transverse polarization of $\Lambda$ hyperons in $e^{+}{e}^{-}\to {\Lambda }^{\uparrow }hX$ processes within TMD factorization
• Inclusive and semi-inclusive production of spin-3/2 hadrons in $e^{+}{e}^{-}$ annihilation
• Observation of $\Lambda$ hyperon local polarization in pPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV
• Dihadron helicity correlation in photon-nucleus collisions
• $\sin ({\varphi }_{\Lambda }-{\varphi }_S)$ 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
• Transverse spin polarization as a novel probe of medium-induced transverse-momentum-broadening effect
• Extracting the $\Lambda$ Polarizing Fragmentation Function from Belle $e^{+}{e}^{-}$ Data Within the TMD Formalism
• Investigating the transverse momentum dependent gluon Sivers function in quarkonium production at $pp$ colliders
• The forward-backward asymmetry in the electron positron annihilation process at twist-4
• Accessing Polarized Fragmentation Functions at the Unpolarized EIC and BELLE Experiments
• General Helicity Formalism for Two-hadron Production in $e^{+}{e}^{-}$ Collisions and the $\Lambda$ Polarizing Fragmentation Function
• Measurement of transverse polarization of $\Lambda$ and $\bar{\Lambda }$ hyperons inside jets in $pp$ collisions at $\sqrt{s}=200$ GeV
• Twist-3 Gluon Fragmentation Contribution to Hyperon Polarization in Semi-Inclusive Deep Inelastic Scattering
• Kinematic regions in the $e^{+}{e}^{-}\to hX$ factorized cross section in a $2$-jet topology with thrust