First measurement of jet axis decorrelation with photon-tagged jets in pp and $ \mathrm{PbPb} $ collisions at 5.02 TeV
- Hayrapetyan, Aram et al
- arXiv:2602.18279CMS-HIN-21-019CERN-EP-2024-331
 | Photon-tagged jet axis decorrelation \ddr in \pp collisions (red boxes, open circles) and \PbPb collisions (blue boxes, filled circles), normalized per photon. The columns show different \PbPb centralities, while the top (bottom) row shows low (high) jet \pt. The leftmost bins extend down to $\ddr = 0$. The shaded boxes represent systematic uncertainties, the vertical bars indicate statistical uncertainties, and the horizontal bars indicate the bin width. |
 | Ratios of photon-tagged jet \ddr spectra in \PbPb and \pp collisions normalized per photon-jet pair. The columns show different \PbPb centralities, while the top (bottom) row shows low (high) jet \pt. The leftmost bins extend down to $\ddr = 0$. The shaded boxes represent total systematic uncertainties, the vertical bars indicate statistical uncertainties, and the horizontal bars indicate the bin width. |
 | Photon-tagged jet axis decorrelation \ddr in \pp collisions, normalized per photon. The left (right) panel shows low (high) jet \pt. The leftmost bins extend down to $\ddr = 0$. The shaded boxes represent systematic uncertainties, statistical uncertainties are within the marker size, and the horizontal bars indicate the bin width. The results are compared to theoretical predictions from the \hybrid, \jewel, \pyquen, and \PYTHIA models. The theory bands represent the statistical uncertainties. |
 | Photon-tagged jet axis decorrelation \ddr in \PbPb collisions with 0--10\% centrality, normalized per photon. The left (right) column shows low (high) jet \pt while the top (bottom) row shows comparisons to predictions from the \hybrid (\jewel and \pyquen) models. The leftmost bins extend down to $\ddr = 0$. The shaded boxes represent systematic uncertainties, the vertical bars indicate statistical uncertainties, and the horizontal bars indicate the bin width. The theory bands represent the statistical uncertainties. |
 | Photon-tagged jet axis decorrelation \ddr in \PbPb collisions with 0--10\% centrality, normalized per photon. The left (right) column shows low (high) jet \pt while the top (bottom) row shows comparisons to predictions from the \hybrid (\jewel and \pyquen) models. The leftmost bins extend down to $\ddr = 0$. The shaded boxes represent systematic uncertainties, the vertical bars indicate statistical uncertainties, and the horizontal bars indicate the bin width. The theory bands represent the statistical uncertainties. |
 | Ratios of photon-tagged jet axis decorrelation \ddr in \PbPb and \pp collisions normalized per photon-jet pair, shown for centrality 0--10\%. The left (right) column shows low (high) jet \pt while the top (bottom) row shows comparisons to predictions from the \hybrid (\jewel and \pyquen) models. The leftmost bins extend down to $\ddr = 0$. The shaded boxes represent systematic uncertainties, the vertical bars indicate statistical uncertainties, and the horizontal bars indicate the bin width. The theory bands represent the statistical uncertainties. |
 | Ratios of photon-tagged jet axis decorrelation \ddr in \PbPb and \pp collisions normalized per photon-jet pair, shown for centrality 0--10\%. The left (right) column shows low (high) jet \pt while the top (bottom) row shows comparisons to predictions from the \hybrid (\jewel and \pyquen) models. The leftmost bins extend down to $\ddr = 0$. The shaded boxes represent systematic uncertainties, the vertical bars indicate statistical uncertainties, and the horizontal bars indicate the bin width. The theory bands represent the statistical uncertainties. |