Speaker
Description
Jet substructure measurements are powerful tools for studying the fragmentation and hadronization processes in vacuum, as well as for quantifying jet quenching effects due to the quark gluon plasma in heavy ion collisions. In particular, jet mass is sensitive to virtuality of the initial hard scattering and has been used for quark- and gluon-initiated jet separation. Measurements of jet mass in $p + p$ collisions also serve as the baseline for future studies in $Au+Au$ collisions and input to angularity measurements. The sPHENIX detector was designed to enable jet structure measurements with precision tracking and calorimetry. This poster presents the measurement of ungroomed ($m/p_{_T}$) in $p+p$ collisions at $\sqrt{s}=200$ GeV, using the sPHENIX calorimeters. The performance of this measurement is assessed by determining the mass energy scale and resolution. This work is an important step toward future sPHENIX jet substructure measurements in $Au+Au$ collisions and that incorporate tracking data.
| Is this an experimental talk? | Yes |
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| Is this on behalf of a collaboration? | Yes |
| Which collaboration? | sPHENIX |
| Are you willing to present as a poster if it is not selected for oral presentation? | Yes |