Dead cone effect in charm and bottom quark jets
S Kluth, W Ochs, R Perez-Ramos - Nuclear and Particle Physics …, 2024 - Elsevier
The evolution of a heavy quark initiated jet is mainly ruled by gluon bremsstrahlung. As a
consequence of the dead-cone effect, this radiation is suppressed in the forward direction at
angles smaller than that proportional to the heavy quark mass MQ, ie Θ 0= MQ/EQ at energy
EQ of the primary quark. In this paper, we unveil this effect in charm and bottom quark jets
using DELPHI and OPAL data from Z 0 boson decays in e+ e− annihilation at center of mass
energy 91.2 GeV. The analysis of the reconstructed heavy quark fragmentation function in …
consequence of the dead-cone effect, this radiation is suppressed in the forward direction at
angles smaller than that proportional to the heavy quark mass MQ, ie Θ 0= MQ/EQ at energy
EQ of the primary quark. In this paper, we unveil this effect in charm and bottom quark jets
using DELPHI and OPAL data from Z 0 boson decays in e+ e− annihilation at center of mass
energy 91.2 GeV. The analysis of the reconstructed heavy quark fragmentation function in …