6–12 Apr 2025
Goethe University Frankfurt, Campus Westend, Theodor-W.-Adorno-Platz 1, 60629 Frankfurt am Main, Germany
Europe/Berlin timezone

Tackling selection bias in heavy-ion jets with energy correlators

7 Apr 2025, 16:55
20m
HZ 6 (Goethe University Frankfurt, Campus Westend, Hörsaalzentrum)

HZ 6

Goethe University Frankfurt, Campus Westend, Hörsaalzentrum

Oral Jets Parallel session 5

Speaker

Jack Holguin

Description

The first measurement of the two-point energy correlator (EEC) in Pb-Pb collisions has revealed its sizeable modifications with respect to the p-p baseline. Nevertheless, challenges arise in comparing these measurements due to selection bias caused by energy loss, which leads to a shift in the Pb-Pb EEC spectrum toward smaller angles as compared to the p-p measurement. In this talk, we will show that jets retain a memory of their original distribution before losing energy, allowing us to define a new EEC-based observable that corrects for the leading-order effects of this selection bias while keeping sensitivity to other medium effects. This represents the first-ever jet substructure observable whose medium modifications cannot be explained solely by selection bias and/or changes in quark/gluon fractions. Finally, we will extend this procedure to charged energy correlators, which correlate the energy flux carried by hadrons of different quantum numbers

Category Theory

Authors

Carlota Andres (MIT) Jack Holguin Jussi Viinikainen (Vanderbilt University (US)) Prof. Raghav Kunnawalkam Elayavalli (Vanderbilt University)

Presentation materials

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