Interplay among transversity induced asymmetries in hadron leptoproduction

Abstract

In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhibits an azimuthal modulation known as Collins effect. When a pair of oppositely charged hadrons is observed, three asymmetries can be considered, a di-hadron asymmetry and two single hadron asymmetries. In lepton deep inelastic scattering on transversely polarized nucleons all these asymmetries are coupled with the transversity distribution. From the high statistics COMPASS data on oppositely charged hadron-pair production we have investigated for the first time the dependence of these three asymmetries on the difference of the azimuthal angles of the two hadrons. The similarity of transversity induced single and di-hadron asymmetries is discussed. A new analysis of the data allows to establish quantitative relationships among them, providing for the first time strong experimental indication that the underlying fragmentation mechanisms are all driven by a common physical process.

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References in corpus (11)

• 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
• A high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering
• Nucleon tensor charge from Collins azimuthal asymmetry measurements
• Simultaneous extraction of transversity and Collins functions from new SIDIS and e+e- data
• Extracting the transversity distributions from single-hadron and dihadron production
• Studies of Azimuthal Modulations in Two Hadron Fragmentation of a Transversely Polarised Quark
• Dihadron fragmentation functions for large invariant mass
• Azimuthal Correlations in the Structure Functions of polarized Dihadron Semi-Inclusive Deep Inelastic Scattering
• Transverse spin and transverse momentum structure of the nucleon from the COMPASS experiment

Cited by in corpus (10)

• Parton Fragmentation Functions
• Recursive model for the fragmentation of polarized quarks
• Production of vector mesons in the String+${}^3{P}_0$ model of polarized quark fragmentation
• Nucleon form factors and parton distributions in nonlocal chiral effective theory
• A simplified recursive ${}^3{P}_0$ model for the fragmentation of polarized quarks
• Transversity distributions from difference asymmetries in semi-inclusive DIS
• Spin Orbit Correlations and the Structure of the Nucleon
• Recent COMPASS results on Transverse Spin Asymmetries in SIDIS
• Transverse momentum correlations of quarks in recursive jet models
• Study of the Transverse-Momentum-Dependent structure of the nucleon in Semi-Inclusive DIS