Signature of the gluon orbital angular momentum
| Autor: | Shohini Bhattacharya, Renaud Boussarie, Yoshitaka Hatta |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
High Energy Physics - Experiment (hep-ex)
High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) High Energy Physics::Phenomenology Nuclear Theory FOS: Physical sciences General Physics and Astronomy Physics::Accelerator Physics High Energy Physics::Experiment Nuclear Experiment High Energy Physics - Experiment |
| Zdroj: | Physical Review Letters |
| Popis: | We propose a novel observable for the experimental detection of the gluon orbital angular momentum (OAM) that constitutes the proton spin sum rule. We consider longitudinal double spin asymmetry in exclusive dijet production in electron-proton scattering and demonstrate that the $\cos \phi$ azimuthal angle correlation between the scattered electron and proton is a sensitive probe of the gluon OAM at small-$x$ and its interplay with the gluon helicity. We also present a numerical estimate of the cross section for the kinematics of the Electron-Ion Collider. Comment: Version accepted for publication in Physical Review Letters |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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