Transverse momentum spectra of charged hadrons in jets at the Tevatron

Abstract

The hadronic $\text{kt}$-spectrum inside a high energy jet is determined including corrections of relative magnitude $\text{cO}\sqrt{{\alpha }_s}$ with respect to the Modified Leading Logarithmic Approximation (MLLA), in the limiting spectrum approximation (assuming an infrared cut-off $Q_0=\text{lqcd}$) and beyond ($Q_0\ne \text{lqcd}$). The results in the limiting spectrum approximation are found to be, after normalization, in impressive agreement with measurements by the CDF collaboration. A new integral representation for the "hump-backed" plateau is also reported.

Comments: Contributed to Hard Probes 2008, Illa da Toxa (Galicia, Spain). 6 pages and 6 figures submitted to EPJC