A high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering

Abstract

A measurement of the azimuthal asymmetry in dihadron production in deep-inelastic scattering of muons on transversely polarised proton (NH${}_3$) targets are presented. They provide independent access to the transversity distribution functions through the measurement of the Collins asymmetry in single hadron production. The data were taken in the year $2010$ with the COMPASS spectrometer using a $160\,\mbox{GeV}/c$ muon beam of the CERN SPS, increasing by a factor of about three the available statistics of the previously published data taken in the year $2007$. The measured sizeable asymmetry is in good agreement with the published data. An approximate equality of the Collins asymmetry and the dihadron asymmetry is observed, suggesting a common physical mechanism in the underlying fragmentation.

14 pages, 8 figures

References in corpus (9)

• The COMPASS Experiment at CERN
• Transverse-Spin and Transverse-Momentum Effects in High-Energy Processes
• 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
• Studies of Azimuthal Modulations in Two Hadron Fragmentation of a Transversely Polarised Quark
• Dihadron fragmentation functions for large invariant mass
• Transversity from two pion interference fragmentation

Cited by in corpus (41)

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• Parton distributions and lattice QCD calculations: toward 3D structure
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• First Extraction of Transversity from a Global Analysis of Electron-Proton and Proton-Proton Data
• Hadrons and Nuclei
• Beyond-Standard-Model Tensor Interaction and Hadron Phenomenology
• Lattice QCD study of the Boer-Mulders effect in a pion
• Sivers effect in Inelastic $J/\psi$ Photoproduction in $e{p}^{\uparrow }$ Collision in Color Octet Model
• Extracting the transversity distributions from single-hadron and dihadron production
• Exploring universality of transversity in proton-proton collisions
• 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
• Recursive model for the fragmentation of polarized quarks
• 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
• Production of vector mesons in the String+${}^3{P}_0$ model of polarized quark fragmentation
• Dihadron fragmentation functions in the quark-jet model: Transversely polarized quarks
• Interplay among transversity induced asymmetries in hadron leptoproduction
• Quark-Jet model for transverse momentum dependent fragmentation functions
• Monte Carlo Implementation of Polarized Hadronization
• Single-spin asymmetry in dihadron production in SIDIS off the longitudinally polarized nucleon target
• Electron-Ion Collider impact study on the tensor charge of the nucleon
• Semi-inclusive back-to-back production of a hadron pair and a single hadron in $e^{+}{e}^{-}$ annihilation
• Realistic estimate of valence transversity distributions from inclusive dihadron production
• A simplified recursive ${}^3{P}_0$ model for the fragmentation of polarized quarks
• One-Loop Corrections of Single Spin Asymmetries in Semi-Inclusive DIS
• Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of ${\rho }^0$ mesons
• Double spin asymmetry in dihadron production in SIDIS off the longitudinally polarized nucleon target
• Transversity distributions from difference asymmetries in semi-inclusive DIS
• Analogies between hadron-in-jet and dihadron fragmentation
• Recent COMPASS results on Transverse Spin Asymmetries in SIDIS
• Single spin asymmetry $A_{UL}^{\sin ({\varphi }_h-{\varphi }_R)}$ in dihadron semi-inclusive DIS
• Probing the Sivers asymmetries through $J/\psi$ photoproduction in ${\mathrm{p}}^{\uparrow }\mathrm{p}$ collision with forward proton tagging
• Azimuthal Correlations in the Structure Functions of polarized Dihadron Semi-Inclusive Deep Inelastic Scattering
• The cos${\varphi }_R$ asymmetry of dihadron production in double longitudinally polarized SIDIS
• Dihadron Fragmentation Functions and Transversity
• Single spin asymmetry $A_{UL}^{\sin (2{\varphi }_h-2{\varphi }_R)}$ in dihadron semi-inclusive DIS
• Work on the interplay among $h^{+}$, $h^{-}$ and hadron pair transverse spin asymmetries in SIDIS