High energy collision experiments provide a suitable environment where Lorentz symmetry breaking can be tested. This motivates us to study the effect of Lorentz-violating (LV) terms on the hadron production process from pair annihilation in the case correspondent to vectorial nonminimal couplings between the fermions and gauge fields. To be specific, we study the effect of LV terms on B-meson production through pair annihilation: $e^{+}{e}^{-}\to q\overline{q}\to B+\mathrm{Jets}$. To this aim, we first discuss the LV modifications on the quantum electrodynamics part of the process, i.e., $e^{+}{e}^{-}\to q\overline{q}$, due to the inclusion of a vectorial nonminimal coupling between the fermions and vector gauge field (photon in the case $s\ll m_Z^2$). In the following, we study the modifications on the quantum chromodynamics part of the process which is described by the fragmentation functions of $q/\overline{q}\to B$. Considering the available data and the analytical result for the leading order (LO) cross section $\sigma (e^{+}{e}^{-}\to B+\mathrm{Jets})$ in the presence of LV terms, we determine a limit on the corresponding Lorentz violation coefficients which are consistent with other analyses resulting from different processes.

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• Lorentz symmetry