Suppression of Spin Transfer to $\Lambda$ Hyperon in Deep-Inelastic Scattering

Abstract

We investigate $\Lambda$ production in semi-inclusive deep-inelastic scattering using a polarized lepton beam and find that the spin transfer is significantly suppressed by target fragmentation. As further demonstrated by a model estimation, experimental data can be well described once the target fragmentation is taken into account, which alleviates the tension with calculations solely based on current fragmentation. Our findings suggest that, at the energies of existing fixed-target experiments, the separation of current and target fragmentation regions is not distinct. Spin transfer as well as other spin effects offers a sensitive probe into the origin of the produced hadron.

arXiv comment7 pages, 4 figures, match the published version in Physical Review Letters

References in corpus (51)

• Semi-inclusive deep inelastic scattering at small transverse momentum
• QCD Factorization for Semi-Inclusive Deep-Inelastic Scattering at Low Transverse Momentum
• Electron-Ion Collider in China
• Phenomenology of Forward Hadrons in DIS: Fracture Functions and its $Q^2$ Evolution
• QCD Factorization for Spin-Dependent Cross Sections in DIS and Drell-Yan Processes at Low Transverse Momentum
• Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab
• QCD Constrains on the Shape of Polarized Quark and Gluon Distributions
• Transverse-momentum distributions in a diquark spectator model
• The Quark/Antiquark Asymmetry of the Nucleon Sea
• Parton Fragmentation Functions
• QCD Analysis of Unpolarized and Polarized Lambda - Baryon Production in Leading and Next-to-Leading Order
• Delineating parton distributions and the strong coupling
• Unpolarised Transverse Momentum Dependent Distribution and Fragmentation Functions from SIDIS Multiplicities
• Asymmetry of Lambda Baryons in Hadronic Z^0 Decays
• Polarized Lambdas in the Current Fragmentation Region
• Behavior of Diffractive Parton Distribution Functions
• Semi-Inclusive Hadron Production at HERA: the Effect of QCD Gluon Resummation
• Semi-Inclusive Deeply Inelastic Scattering at Small q_T
• Observation of Transverse $\Lambda /\bar{\Lambda }$ Hyperon Polarization in $e^{+}{e}^{-}$ Annihilation at Belle
• Connecting Different TMD Factorization Formalisms in QCD
• Lambda and Antilambda polarization from deep inelastic muon scattering
• Angular dependences in electroweak semi-inclusive leptoproduction
• Extracting the Transverse Momentum Dependent Polarizing Fragmentation Functions
• Kinematics of Current Region Fragmentation in Semi-Inclusive Deeply Inelastic Scattering
• Measurement of the Longitudinal Spin Transfer to Lambda and Anti-Lambda Hyperons in Polarised Muon DIS
• SIDIS in the target fragmentation region: polarized and transverse momentum dependent fracture functions
• Measurement of Longitudinal Spin Transfer to Lambda Hyperons in Deep-Inelastic Lepton Scattering
• Resummation for Polarized Semi-Inclusive Deep-Inelastic Scattering at Small Transverse Momentum
• Measurement of the Antilambda Polarization in nu_mu Charged Current Interactions in the NOMAD Experiment
• Longitudinal Spin Transfer to the $\Lambda$ Hyperon in Semi-Inclusive Deep-Inelastic Scattering
• Mapping the Kinematical Regimes of Semi-Inclusive Deep Inelastic Scattering
• The strange quark spin of the proton in semi-inclusive $\Lambda$ leptoproduction
• 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
• Longitudinal Spin Transfer to $\Lambda$ and $\bar{\Lambda }$ Hyperons in Polarized Proton-Proton Collisions at $\sqrt{s}$ = 200 GeV
• Transverse spin transfer to $\Lambda$ and $\bar{\Lambda }$ hyperons in polarized proton-proton collisions at $\sqrt{s}=200\mathrm{GeV}$
• Longitudinal Polarization of Lambda and anti-Lambda Hyperons in Lepton-Nucleon Deep-Inelastic Scattering
• Improved measurement of the longitudinal spin transfer to $\Lambda$ and $\bar{\Lambda }$ hyperons in polarized proton-proton collisions at $\sqrt{s}$ = 200 GeV
• Measurement of K0S, Lambda, Antilambda production at HERA
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• A New Fracture Function Approach to QCD Initial State Radiation
• Current fragmentation in semiinclusive leptoproduction
• Polarized Lambda hyperon production in Semi-inclusive deep inelastic scattering off an unpolarized nulceon target
• Nucleon strange $s\bar{s}$ asymmetry to the $\Lambda /\bar{\Lambda }$ fragmentation
• Fracture Functions in Different Kinematic Regions and Their Factorizations
• Twist-3 Contributions in Semi-Inclusive DIS in the Target Fragmentation Region
• Longitudinal and transverse spin transfer to $\Lambda$ and $\overline{\Lambda }$ hyperons in polarized $p$+$p$ collisions at $\sqrt{s}=200$ GeV
• Strange quark-antiquark asymmetry of nucleon sea from $\Lambda /\bar{\Lambda }$ polarization
• Gluonic contributions to semi-inclusive DIS in the target fragmentation region
• Longitudinal Spin Transfer to $\Lambda$ Hyperons in CLAS12
• Semi-Inclusive DIS: an explicit calculation in the Target Fragmentation Region
• Target Fragmentation in Semi-Inclusive DIS: Fracture Functions, Cut Vertices and the OPE

Cited by in corpus (2)

• Transverse spin polarization as a novel probe of medium-induced transverse-momentum-broadening effect
• Longitudinal Spin Transfer to $\Lambda$ Hyperons in Semi-Inclusive Deep Inelastic Scattering with CLAS12