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Measuring transverse spin correlations by 4-particle correlations in $e^+ e^-\to 2 \ {\rm jets}$
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abstract
The azimuthal distribution of pairs of particles in a jet is sensitive to the transverse polarization of the quark initiating the jet, but with a sensitivity that involves a nonperturbative analyzing power. We show in detail how to measure the analyzing power from 4-hadron correlations in $e^+ e^- \to 2 \ {\rm jets}$. We explain the combinations of particle flavor that are likely to give the biggest effect.
Forward citations
Cited by 4 Pith papers
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Probing Gluon Linear Polarization with Dihadron Fragmentation in $\chi_b$ Decays
The two gluons from chi_b0 decay carry correlated linear polarizations, so the angular correlation between two pion pairs can directly probe the previously unmeasured linearly polarized gluon dihadron fragmentation function.
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Bell Inequality Violation of Light Quarks in Back-to-Back Dihadron Pair Production at Lepton Colliders
Using dihadron fragmentation functions as spin analyzers, the paper shows that Bell inequality violation in massless quark pairs can be probed through azimuthal correlations, with projected discovery significance from...
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Dihadron azimuthal asymmetry and light-quark dipole moments at the Electron-Ion Collider
Proposal for a new observable—dihadron azimuthal asymmetry in unpolarized SIDIS at EIC—that isolates linear dependence on light-quark dipole couplings via SM-dipole interference.
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StringSpinner 2.0: Enabling quark spin effects in PYTHIA for $e^+e^-$ annihilation
StringSpinner 2.0 implements propagation of spin correlations from a user-defined joint q qbar density matrix in PYTHIA for e+e- to hadrons, demonstrated via Collins asymmetry calculations for back-to-back pions.
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