Production of charm jets tagged with D\(^0\) mesons in pp collisions at \(\sqrt{s}\) = 13TeV with ALICE

Kvapil, Jakub ORCID: 0000-0002-0298-9073 (2022). Production of charm jets tagged with D\(^0\) mesons in pp collisions at \(\sqrt{s}\) = 13TeV with ALICE. University of Birmingham. Ph.D.

Preview

Kvapil2022PhD_Redacted.pdf
Text - Redacted Version
Available under License All rights reserved.
Download (17MB) | Preview

Abstract

The production of charm jets tagged with fully reconstructed D\(^0\) mesons measured at \(\sqrt{s}\) = 13 TeV by the ALICE detector at the CERN LHC, is presented in this thesis. The D\(^0\) mesons are reconstructed through the hadronic decay channel D\(^0\) →K− \(\pi\)+ and its charge conjugate. Jets are reconstructed from charged-particle tracks and the D\(^0\) candidate using the anti-\(k_T\) algorithm. Results are given for the jet resolution parameters R = 0.2, 0.4, and 0.6 in the pseudorapidity range \(\eta_{ch.jet}\) < (0.9 − R) and charged-particle jet transverse momentum 5 < \(p_{T,ch.jet}\) < 50 GeV/\(c\). The \(p_{T,ch jet}\)-differential cross-section and the parallel momentum fraction carried by the D\(^0\), \(z^{ch}_\|\) , is presented in this thesis. The measurement of in-jet fragmentation can provide valuable information for constraining gluon-to-hadron fragmentation functions, and this measurement provides a unique insight into intermediate transverse momentum. The measurement is compared to several Monte Carlo generators with both leading-order and next-to-leading-order accuracy. The models describe the main features of the \(p_{T,ch jet}\) spectra well and provide a good description of the \(z^{ch}_\|\) for \(p_{T,chjet}\) > 10 GeV/\(c\). A discrepancy in \(z^{ch}_\|\) distributions between data and models is observed for lower \(p_{T,ch jet}\).

Type of Work:

Thesis (Doctorates > Ph.D.)

Award Type:

Doctorates > Ph.D.

Supervisor(s):