Jet areas as a tool for background subtraction
نویسندگان
چکیده
In all modern hadronic colliders, jets recieve a large contribution from a soft background: pileup in the case of proton-proton collisions at the LHC, or the underlying event for heavy-ion collisions at RHIC or the LHC. In these proceedings, we present a generic and simple method, based on jet areas, to subtract the contribution of the soft background from the jets. This allows for more precise kinematic reconstruction of jets in dense environments.
منابع مشابه
Searching for Jets in Heavy Ion Collisions
Jet quenching measurements using leading particles and their correlations suffer from known biases, which can be removed via direct reconstruction of jets in central heavy ion collisions. In this talk, we discuss several modern jet reconstruction algorithms and background subtraction techniques that are appropriate to heavy ion collisions.
متن کاملHeavy Ion Collisions by STAR
We present the first measurement of reconstructed jets in ultra-relativistic heavy ion collisions. Utilizing the large coverage of the STAR Time Projection Chamber and Electromagnetic Calorimeter, we apply several modern jet reconstruction algorithms and background subtraction techniques and explore their systematic uncertainties in heavy ion events. The differential spectrum for inclusive jet ...
متن کاملJet Reconstruction in Heavy Ion Collisions
Measurements of strong suppression of inclusive hadron distributions and di-hadron correlations at high pT , while providing evidence for partonic energy loss, also suffer from geometric biases due to the competition of energy loss and fragmentation. The measurements of fully reconstructed jets is expected to lack these biases as the energy flow is measured independently of the fragmentation de...
متن کاملCalorimetric transverse energy-energy correlations as a probe of jet quenching
The sensitivity of calorimetric energy-energy correlation function to the mediuminduced energy loss of fast partons in high multiplicity heavy ion interactions is demonstrated at the appropriate selection of events for the analysis, namely, the availability of one high-pT jet in an event at least and using the procedure of “thermal” background subtraction. Without jet trigger this correlation f...
متن کاملIntelligent Knowledge Based System Approach for Optimization of Design and Manufacturing for Abrasive Water Jet Machining
A water jet machining is an industrial tool capable of cutting a wide variety of materials using a very high-pressure jet of water, or a mixture of water and an abrasive substance. This paper addresses the concept of the Intelligent knowledge base system (IKBS) for optimization of product design and manufacturing process for water jet machining in computer based concurrent engineering environme...
متن کامل