CP-Violating Effect of QCD Vacuum in Quark Fragmentation

Abstract

We demonstrate that the non-trivial CP-violating structure of QCD vacuum can lead to an observable effect in $e^{+}{e}^{-}\to q\bar{q}\to 2$-jet annihilation. We find that the sign of the jet handedness correlation can be opposite to that predicted by factorization of $q\bar{q}$ fragmentation and CP-conjugation of the two jets. A simple model estimation of the handedness correlation magnitude is given.

significantly revised and extended version to appear in Phys.Lett.B

References in corpus (1)

• Soft Photons in Hadron-Hadron Collisions: Synchrotron Radiation from the QCD Vacuum?

Cited by in corpus (12)

• The Chiral Magnetic Effect and Anomaly-Induced Transport
• Possibility of spontaneous parity violation in hot QCD
• Pionic Measures of Parity and CP Violation in High Energy Nuclear Collisions
• Interference fragmentation functions in electron-positron annihilation
• Real-time non-perturbative dynamics of jet production: quantum entanglement and vacuum modification
• Quark fragmentation in the $\theta$-vacuum
• Di-hadron fragmentation and mapping of the nucleon structure
• High Energy Collisions and Nonperturbative QCD
• Azimuthal asymmetries from $\theta$ Vacuum
• Parity odd Fragmentation Functions
• Parity-odd Parton Distribution Functions from $\theta$-Vacuum
• Handedness Correlation from Quark Polarization