Abstract (data abstract)

A study of angular correlations arising from gluon polarization effects inside jets is performed using proton-proton collisions at a center-of-mass energy of $\sqrt{s}$ = 13.6 TeV.The data correspond to an integrated luminosity of 34.7 $fb^{-1}$, collected in 2022 with the CMS detector at the LHC.The details of the parton shower are investigated using jets reconstructed with the $anti-k_T$ algorithm and declustered with the Cambridge–Aachen algorithm.A novel analysis technique is developed to identify characteristic features of the jet substructure and to select intermediate gluon splittings into quark-antiquark pairs.An observable sensitive to gluon polarization in the shower is measured and compared with PYTHIA 8 and HERWIG 7 model predictions, with and without spin correlations.The results support the predictions that include gluon polarization effects, while strongly disfavoring models that neglect them.

Figure 1 qqbar Score

Data from Figure 1, located on page 4.

10.17182/hepdata.168217.v1/t1

DNN output qqbar score for a jet identified in the qqbar class in the data and in the different MC...
Figure 2 Delta phi (left)

Data from Figure 2(left), located on page 5.

10.17182/hepdata.168217.v1/t2

Delta phi distribution in data and MC simulations for the inclusive sample
Figure 2 Delta phi (right)

Data from Figure 2(right), located on page 5.

10.17182/hepdata.168217.v1/t3

Delta phi distribution in data and MC simulations in the qqbar category with score qq > 0.6 cut
Figure 3 Unfolded Delta phi

Data from Figure 3, located on page 6.

10.17182/hepdata.168217.v1/t4

Unfolded Delta phi distribution in events of the qqbar category with score qq > 0.6 in data compared to MC...
Figure A.1 Delta phi (up left)

Data from Figure A.1(up left), located on page 10.

10.17182/hepdata.168217.v1/t5

Delta phi distribution in data and MC simulations in the unmatched category.
Figure A.1 Delta phi (up right)

Data from Figure A.1(up right), located on page 10.

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Delta phi distribution in data and MC simulations in the qg category.
Figure A.1 Delta phi (bottom)

Data from Figure A.1(bottom), located on page 10.

10.17182/hepdata.168217.v1/t7

Delta phi distribution in data and MC simulations in the gg category.
Figure A.2 Delta phi (up left)

Data from Figure A.2(up left), located on page 11.

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Delta phi distribution in data and MC simulations in the qqbar category with score qq > 0.4 cut.
Figure A.2 Delta phi (up right)

Data from Figure A.2(up right), located on page 11.

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Delta phi distribution in data and MC simulations in the qqbar category with score qq > 0.5 cut.
Figure A.2 Delta phi (bottom)

Data from Figure A.2(bottom), located on page 11.

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Ratio of the data to the correlation-off PYTHIA 8 predictions.
Figure A.3 Unfolded Delta phi

Data from Figure A.3, located on page 12.

10.17182/hepdata.168217.v1/t11

Unfolded Delta phi distribution in the inclusive events in data compared to MC simulations.

Figure 1 qqbar Score

Figure 2 Delta phi (left)

Figure 2 Delta phi (right)

Figure 3 Unfolded Delta phi

Figure A.1 Delta phi (up left)

Figure A.1 Delta phi (up right)

Figure A.1 Delta phi (bottom)

Figure A.2 Delta phi (up left)

Figure A.2 Delta phi (up right)

Figure A.2 Delta phi (bottom)

Figure A.3 Unfolded Delta phi

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