Prompt production at hadron colliders may provide a unique test for the color-octet mechanism in nonrelativistic QCD. We present an analysis for the polarization observables of and at next-to-leading order in and propose to measure them at the LHC, which is expected to be important for testing the validity of nonrelativistic QCD.
DOI:https://doi.org/10.1103/PhysRevLett.112.182003
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The cross section ratio vs the transverse momentum at the Tevatron Run II (left panel) and LHC at (right two panels). The rapidity cuts are the same as in the experiments [19, 23, 24]. Results for LO NRQCD (solid lines), NLO NRQCD (dashed lines), and LO CSM (dotted lines) are shown.
Reuse & Permissions, , for with and in the helicity frame at NLO in NRQCD. The thin lines represent whereas the thick lines represent . Negative values are marked red (lighter).
Reuse & PermissionsPredictions of spectra for the helicity-summed (left column) and (right column) at the LHC with . Cross sections in the central rapidity region () and forward rapidity region () for are plotted. Results for LO NRQCD (solid lines), NLO NRQCD (dashed lines), and LO CSM (dotted lines) are shown.
Reuse & PermissionsThe dependence of with angular distributions from radiative decays (left column) and (right column) in the helicity frame at the LHC with . Results in central and forward rapidity regions are plotted. The LO NRQCD (solid lines), NLO NRQCD (dashed lines), and LO CSM (dotted lines) predictions are shown.
Reuse & PermissionsThe dependence of with dilepton angular distributions from cascade decays (left column) and (right column) in the helicity frame at the LHC with . Results in central rapidity and forward rapidity regions are plotted, and the LO NRQCD (solid lines), NLO NRQCD (dashed lines), and LO CSM (dotted lines) predictions are shown.
Reuse & Permissions
