Journal of High Energy Physics (May 2024)

Heavy quark transverse momentum dependent fragmentation

  • Lin Dai,
  • Chul Kim,
  • Adam K. Leibovich

DOI
https://doi.org/10.1007/JHEP05(2024)002
Journal volume & issue
Vol. 2024, no. 5
pp. 1 – 41

Abstract

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Abstract In this paper, we investigate the heavy quark (HQ) mass effects on the transverse momentum dependent fragmentation function (TMDFF). We first calculate the one-loop TMDFF initiated by a heavy quark. We then investigate the HQ TMDFF in the limit where the transverse momentum, q ⊥ is small compared to the heavy quark mass, q ⊥ ≪ m and also in the opposite limit where q ⊥ ≫ m. As applications of the HQ TMDFF, we study the HQ transverse momentum dependent jet fragmentation function, where the heavy quark fragments into a jet containing a heavy hadron, and we investigate a heavy hadron’s transverse momentum dependent distribution with respect to the thrust axis in e + e − collisions.

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