Measurement of hadron composition in charged jets from pp collisions with the ALICE experiment

May 20, 2014, 2:20 PM
titanium (darmstadtium)



Schlossgraben 1 64283 Darmstadt Germany
Contributed Talk Jets Jets


Xianguo Lu (Ruprecht-Karls-Universitaet Heidelberg (DE))


Jets are defined in QCD as cascades of consecutive emission of partons from an initial hard scattering. The process of parton showering and subsequent hadronisation is broadly known as fragmentation. Identified particles in the final state provide an enhanced sensitivity to the flavor dependence of fragmentation. ALICE at the CERN LHC is a general-purpose heavy ion experiment designed to study the physics of strongly interacting matter. It provides excellent tracking and particle identification. Charged pions, kaons and (anti-)protons are identified using the TPC specific energy loss (d$E$/d$x$) in the momentum range up to about 40 GeV/$c$. In this talk we present novel measurements of hadron composition ($\pi$/K/p) of charged jets from pp collisions at $\sqrt{\rm s} = 7$ TeV. The results are compared to model calculations and the implications for identified hadron fragmentation functions are discussed.
On behalf of collaboration: ALICE

Primary author

Xianguo Lu (Ruprecht-Karls-Universitaet Heidelberg (DE))

Presentation materials