Jet reconstruction in hadronic collisions by Gaussian filtering

Understand

A new algorithm for jet finding in hadronic collisions is presented.

• The algorithm, based on a Gaussian filter in $(\eta,\phi)$, is specifically intended for use in heavy ion collisions and/or for detectors with limited acceptance.
• The performance of the algorithm is compared to two conventional algorithms, a seedless cone algorithm and a $k_\perp$ algorithm, for Pythia simulated di-jet events in $\sqrt{s} = 200 \mathrm{GeV}$ $p + p$ collisions with $4 \mathrm{GeV}/c \le \sqrt{Q^2} \le 16 \mathrm{GeV}/c$.
• The Gaussian filter is found to perform as well as, and in some instances better than, the conventional algorithms.