Speaker
Description
Transverse momentum broadening is one of the observables measured to study the hadronization process. This process is directly related to the space-time development of a deconfined quark in the nuclear medium before it evolves into a hadron [1, 2, 3]. I’ll show the preliminary results for the first experimental measurements of the transverse momentum broadening for positive pions, produced by lepton-nucleon deep inelastic scattering, in carbon, iron, and lead targets at Jefferson Lab’s CLAS detector with a 5.014GeV unpolarized electron beam. We used the particle identification scheme developed during the charged pions’ multiplicity ratio analysis measurements [4]. In addition, we applied detector acceptance and radiative corrections.
[1] R. Baier et al. “Radiative energy loss and p(T) broadening of high-energy partons in nuclei”. In: Nucl.Phys. B 484 (1997), pp. 265–282. doi: 10.1016/S0550-3213(96)00581-0. arXiv: hep-ph/9608322.
[2] B. Z. Kopeliovich et al. “Nuclear hadronization: Within or without?” In: Nucl. Phys. A 740 (2004), pp. 211–245. doi: 10.1016/j.nuclphysa.2004.04.110. arXiv: hep-ph/0311220.
[3] S. Domdey et al. “Transverse Momentum Broadening in Semi-inclusive DIS on Nuclei”. In: Nucl. Phys. A825 (2009), pp. 200–211. doi:10.1016/j.nuclphysa.2009.04.009. arXiv: 0812.2838 [hep-ph].
[4] S. Moran et al. “Measurement of charged-pion production in deep-inelastic scattering off nuclei with the CLAS detector”. In: Phys. Rev. C 105.1 (2022), p. 015201. doi: 10.1103/PhysRevC.105.015201. arXiv:2109.09951 [nucl-ex].1
