2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185185Heavy quark production is studied at the high energy linear e^+e^- collider (LC) TESLA both in its nominal and Photon Collider (PC) mode. Leading order cross-sections are calculated for the production of heavy quarks, e^+e^- -> e^+e^- Q\bar{Q}X, at high transverse momenta. The sensitivity of this process to the gluon content in the photon is studied.16 pages, Latex, 10 ps figures, uses epsfig.sty. IFT 2001/39High Energy Physics - Phenomenologytext