The article discusses research showing how formulas for single-minus scattering amplitudes can be extended from gluons to gravitons. Scattering amplitudes measure the probability that particles interact in a certain way.
For decades, physicists believed tree-level interactions where one gluon has negative helicity and the rest positive had zero amplitude, meaning they should not occur. Researchers found that in a specific kinematic setting called the half-collinear regime, these amplitudes are actually nonzero and can be expressed with a closed-form formula.
The result was discovered with help from GPT-5.2 and verified using known physics constraints. The same mathematical approach can now be applied to gravitons, opening new research directions.
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