Production of vector mesons in the String+${}^3{P}_0$ model of polarized quark fragmentation

Abstract

The production of vector mesons in the fragmentation process of polarized quarks is studied within the recursive String+${}^3{P}_0$ model, improving a previous version of the model in which the production of pseudoscalar mesons only was considered. Two types of couplings of the vector meson to quarks are introduced, their coupling constants being the additional free parameters of the model. The angular distribution of the decay products of the polarized vector meson is deduced from the spin density matrix of the meson and the spin information is propagated along the fragmentation chain taking into account the entanglement of spin states. The new model is implemented in a stand alone Monte Carlo program utilized to investigate in detail kinematic distributions and transverse spin asymmetries. The sensitivity of these observables to the new free parameters is discussed and the Monte Carlo results are compared with experimental data on transverse spin asymmetries.

21 pages, 23 figures, 2 appendices

References in corpus (9)

• PYTHIA 6.4 Physics and Manual
• Parton Fragmentation Functions
• Collins and Sivers asymmetries in muonproduction of pions and kaons off transversely polarised proton
• Evidence for a Transverse Single-Spin Asymmetry in Leptoproduction of pi+pi- Pairs
• Modeling dihadron fragmentation functions
• Spin observables and spin structure functions: inequalities and dynamics
• Extracting the transversity distributions from single-hadron and dihadron production
• Observation of Beam Spin Asymmetries in the Process $ep\to e{\pi }^{+}{\pi }^{-}X$ with CLAS12
• A simplified recursive ${}^3{P}_0$ model for the fragmentation of polarized quarks

Cited by in corpus (7)

• Event Generators for High-Energy Physics Experiments
• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
• Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of ${\rho }^0$ mesons
• Production cross sections of light and charmed mesons in $e^{+}{e}^{-}$ annihilation near 10.58 GeV
• Spinning Pairs: Supporting ${}^3{P}_0$ Quark-Pair Creation from Landau Gauge Green's Functions
• The String+${}^3{P}_0$ Model of Hadronization
• Simulation of the Polarized Quark Fragmentation with Vector Meson Production