Transverse spin effects in hadron-pair production from semi-inclusive deep inelastic scattering

Abstract

First measurements of azimuthal asymmetries in hadron-pair production in deep-inelastic scattering of muons on transversely polarised ^6LiD (deuteron) and NH_3 (proton) targets are presented. The data were taken in the years 2002-2004 and 2007 with the COMPASS spectrometer using a muon beam of 160 GeV/c at the CERN SPS. The asymmetries provide access to the transversity distribution functions, without involving the Collins effect as in single hadron production. The sizeable asymmetries measured on the NH_ target indicate non-vanishing u-quark transversity and two-hadron interference fragmentation functions. The small asymmetries measured on the ^6LiD target can be interpreted as indication for a cancellation of u- and d-quark transversities.

13 pages, 4 figures, updated to the published version

References in corpus (10)

• The COMPASS Experiment at CERN
• Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs in e+e- Annihilation at \sqrt{s} = 10.58 GeV
• Transverse-Spin and Transverse-Momentum Effects in High-Energy Processes
• Observation of transverse polarization asymmetries of charged pion pairs in e+e- annihilation near sqrt s=10.58 GeV
• First glances at the transversity parton distribution through dihadron fragmentation functions
• Evidence for a Transverse Single-Spin Asymmetry in Leptoproduction of pi+pi- Pairs
• Modeling dihadron fragmentation functions
• Evolution equations for extended dihadron fragmentation functions
• Asymmetries involving dihadron fragmentation functions: from DIS to e+e- annihilation
• Transversity from two pion interference fragmentation

Cited by in corpus (46)

• The Spin Structure of the Nucleon
• Parton distributions and lattice QCD calculations: toward 3D structure
• Experimental investigation of transverse spin asymmetries in muon-p SIDIS processes: Sivers asymmetries
• First extraction of valence transversities in a collinear framework
• First measurement of transverse-spin-dependent azimuthal asymmetries in the Drell-Yan process
• Experimental investigation of transverse spin asymmetries in muon-p SIDIS processes: Collins asymmetries
• First Extraction of Transversity from a Global Analysis of Electron-Proton and Proton-Proton Data
• Gluon TMD in particle production from low to moderate x
• A high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering
• Beyond-Standard-Model Tensor Interaction and Hadron Phenomenology
• Sivers asymmetry extracted in SIDIS at the hard scale of the Drell-Yan process at COMPASS
• Observation of Transverse Spin-Dependent Azimuthal Correlations of Charged Pion Pairs in $p^{\uparrow }+p$ at $\sqrt{s}=200$ GeV
• Extracting the transversity distributions from single-hadron and dihadron production
• Exploring universality of transversity in proton-proton collisions
• Transverse Spin Structure of the Nucleon
• Production of two hadrons in semi-inclusive Deep Inelatic Scattering
• Constrained fit of the valence transversity distributions from dihadron production
• Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p${}^{\uparrow }$+p collisions at $\sqrt{s}$ = 500 GeV
• Studies of Azimuthal Modulations in Two Hadron Fragmentation of a Transversely Polarised Quark
• 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
• Exclusive rho^0 muoproduction on transversely polarised protons and deuterons
• Azimuthal asymmetries of charged hadrons produced in high-energy muon scattering off longitudinally polarised deuterons
• Di-hadron fragmentation and mapping of the nucleon structure
• Azimuthal transverse single-spin asymmetries of inclusive jets and identified hadrons within jets from polarized $pp$ collisions at $\sqrt{s}$ = 200 GeV
• Predictions for Sivers single spin asymmetries in one- and two-hadron electroproduction at CLAS12 and EIC
• Dihadron fragmentation functions in the quark-jet model: Transversely polarized quarks
• Electron-Ion Collider impact study on the tensor charge of the nucleon
• Single-spin asymmetry in dihadron production in SIDIS off the longitudinally polarized nucleon target
• Realistic estimate of valence transversity distributions from inclusive dihadron production
• Semi-inclusive back-to-back production of a hadron pair and a single hadron in $e^{+}{e}^{-}$ annihilation
• Extraction of Azimuthal Asymmetries using Optimal Observables
• Double spin asymmetry in dihadron production in SIDIS off the longitudinally polarized nucleon target
• Sivers Effect in Dihadron Semi-Inclusive Deep Inelastic Scattering
• Transversity distributions from difference asymmetries in semi-inclusive DIS
• Spin Orbit Correlations and the Structure of the Nucleon
• Analogies between hadron-in-jet and dihadron fragmentation
• Detecting correlated di-hadron pairs: about the extraction of transversity and beyond
• Studies of Transverse Momentum Dependent Parton Distributions and Bessel Weighting
• Single spin asymmetry $A_{UL}^{\sin ({\varphi }_h-{\varphi }_R)}$ in dihadron semi-inclusive DIS
• Transverse Spin Effects in Future Drell-Yan Experiments
• Single spin asymmetry $A_{UL}^{\sin (2{\varphi }_h-2{\varphi }_R)}$ in dihadron semi-inclusive DIS
• Status on the transversity parton distribution: the dihadron fragmentation functions way
• The cos${\varphi }_R$ asymmetry of dihadron production in double longitudinally polarized SIDIS
• Dihadron Fragmentation Functions and Transversity
• Chiral-odd generalized parton distributions for the low-lying octet baryons