On the extraction of the valence transversity distributions from SIDIS data

Abstract

The transversity distribution for $u$ and $d$ quarks is usually extracted from data on spin asymmetries in Semi Inclusive Deep Inelastic Scattering (SIDIS): however, due to its chiral odd nature, it has to be coupled to another chiral odd function, typically the Collins or the di-hadron fragmentation function. A recent suggestion of considering SIDIS data involving ratios of spin asymmetries and avoiding a knowledge of the Collins function, is briefly discussed. New measurements, involving ratios of cross sections, are suggested. They would allow a direct extraction of the transversity ratio, $h_1^{d_V}/h_1^{u_V}$. Numerical estimates are given.

arXiv comment6 pages, 2 figures. Revised version accepted for publication in PRD. Minor changes and a few references added. Scale of the figures changed

References in corpus (21)

• Parton distributions for the LHC
• Fragmentation of Transversely Polarized Quarks Probed in Transverse Momentum Distributions
• Semi-inclusive deep inelastic scattering at small transverse momentum
• Models for the Polarized Parton Distributions of the Nucleon
• Transversity and Collins functions from SIDIS and e+e- data
• Parton Distributions for LHC
• Parton-to-Pion Fragmentation Reloaded
• Extraction of Quark Transversity Distribution and Collins Fragmentation Functions with QCD Evolution
• Update on transversity and Collins functions from SIDIS and e+ e- data
• Axial, Scalar and Tensor Charges of the Nucleon from 2+1+1-flavor Lattice QCD
• First extraction of valence transversities in a collinear framework
• Flavor diagonal tensor charges of the nucleon from 2+1+1 flavor lattice QCD
• First glances at the transversity parton distribution through dihadron fragmentation functions
• Nucleon charges with dynamical overlap fermions
• General Helicity Formalism for Polarized Semi-Inclusive Deep Inelastic Scattering
• Transverse spin effects in hard semi-inclusive collisions
• Simultaneous extraction of transversity and Collins functions from new SIDIS and e+e- data
• Nucleon scalar and tensor charges using lattice QCD simulations at the physical value of the pion mass
• A Strategy for the Analysis of Semi-Inclusive Deep Inelastic Scattering
• Role of transverse momentum dependence of unpolarised parton distribution and fragmentation functions in the analysis of azimuthal spin asymmetries
• Transversity distributions from difference asymmetries in semi-inclusive DIS

Cited by in corpus (3)

• Weinberg operator contribution to the nucleon electric dipole moment in the quark model
• Longitudinal and transverse spin transfer to $\Lambda$ and $\overline{\Lambda }$ hyperons in polarized $p$+$p$ collisions at $\sqrt{s}=200$ GeV
• Light-Front Transverse Momentum Distributions for $\mathcal{J}$=1/2 Hadronic Systems in Valence Approximation