Net-charge fluctuations and balance functions at the LHC

Jet charge at the LHC.

Knowing the charge of the parton initiating a light-quark jet could be extremely useful both for testing aspects of the standard model and for characterizing potential beyond-the-standard-model signals. We show that despite the complications of hadronization and out-of-jet radiation such as pileup, a weighted sum of the charges of a jet's constituents can be used at the LHC to distinguish among...

Event by event Net Charge Fluctuations

We present analyses of event-by-event dynamical net charge fluctuations measured in130 and 200 GeV Au Au collisions with the STAR detector. The dynamical net charge fluctuations are evaluated using the ν+−,dyn observable. Dynamical fluctuations measured in Au Au collisions at 130 and 200 GeV are finite, and exceed charge conservation limits. They deviate from a perfect 1/N scaling and provide a...

Characterization of Jet Charge at the LHC

The Large Hadron Collider (LHC) produces a staggering amount of data about 30 petabytes annually. One of the largest difficulties in analyzing this data is the analysis of hadronic ”jets” of particles produced by quantum chromodynamic processes. Due to the thresholds that particles must exceed in order to have their data stored, it is not possible to simply add the charges of every particle in ...

Removing Distortions from Charge Balance Functions

Charge balance functions provide insight into critical issues concerning hadronization and transport in heavy-ion collisions by statistically isolating charge/anti-charge pairs which are correlated by charge conservation. However, distortions from residual interactions and unbalanced charges cloud the observable. Within the context of simple models, the significance of these effects is studied ...

Net charge fluctuations in Au+Au collisions at root s(NN)=130 GeV