Exploring universality of transversity in proton-proton collisions

Abstract

We consider the azimuthal correlations of charged hadron pairs with large total transverse momentum and small relative momentum, produced in proton-proton collisions with one transversely polarized proton. One of these correlations directly probes the chiral-odd transversity parton distribution in connection with a chiral-odd interference fragmentation function. We present predictions for this observable based on previous extractions of transversity (from charged pion pair production in semi-inclusive deep-inelastic scattering) and of the interference fragmentation function (from the production of back-to-back charged pion pairs in electron-positron annihilations). All analyses are performed in the framework of collinear factorization. We compare our predictions to the recent data on proton-proton collisions released by the STAR collaboration at RHIC, and we find them reasonably compatible. This comparison confirms for the first time the predicted role of transversity in proton-proton collisions and it allows to test its universality.

5 pages, revtex4-1 with pdflatex, 4 figures in pdf format

References in corpus (5)

• Parton distributions for the LHC
• Evidence for a Transverse Single-Spin Asymmetry in Leptoproduction of pi+pi- Pairs
• Modeling dihadron fragmentation functions
• Evolution equations for extended dihadron fragmentation functions
• Extracting the transversity distributions from single-hadron and dihadron production

Cited by in corpus (21)

• Parton Fragmentation Functions
• Parton distributions and lattice QCD calculations: toward 3D structure
• First Extraction of Transversity from a Global Analysis of Electron-Proton and Proton-Proton Data
• Nucleon structure from basis light-front quantization
• Proton structure from a light-front Hamiltonian
• Transverse spin effects in hard semi-inclusive collisions
• Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p${}^{\uparrow }$+p collisions at $\sqrt{s}$ = 500 GeV
• First simultaneous global QCD analysis of dihadron fragmentation functions and transversity parton distribution functions
• Semi-inclusive production of two back-to-back hadron pairs in $e^{+}{e}^{-}$ annihilation revisited
• Invariant-mass and fractional-energy dependence of inclusive production of di-hadrons in $e^{+}{e}^{-}$ annihilation at $\sqrt{s}=$ 10.58 GeV
• Single-spin asymmetry in dihadron production in SIDIS off the longitudinally polarized nucleon target
• Double spin asymmetry in dihadron production in SIDIS off the longitudinally polarized nucleon target
• Analogies between hadron-in-jet and dihadron fragmentation
• Boer-Mulders function of the pion and pretzelosity distribution of the proton in the polarized pion-proton Drell-Yan process at COMPASS
• Single spin asymmetry $A_{UL}^{\sin ({\varphi }_h-{\varphi }_R)}$ in dihadron semi-inclusive DIS
• Dihadron fragmentation framework for near-side energy-energy correlators
• ECCE Sensitivity Studies for Single Hadron Transverse Single Spin Asymmetry Measurements
• Single spin asymmetry $A_{UL}^{\sin (2{\varphi }_h-2{\varphi }_R)}$ in dihadron semi-inclusive DIS
• The Tensor and the Scalar Charges of the Nucleon from Hadron Phenomenology
• Phenomenology of Dihadron Fragmentation Function
• Instanton induced transverse single spin asymmetry for ${\pi }^0$ production in $pp$-scattering