Inclusive Charm Production at HERA and the Charm Content of the Photon

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dc.creatorDrees, M.
dc.creatorGodbole, R. M.
dc.date1995-05-12
dc.date.accessioned2026-07-07T03:57:37Z
dc.date.available2026-07-07T03:57:37Z
dc.descriptionWe calculate the contribution to inclusive high tranverse momentum ($p_T$) charm production at HERA from the excitation of charm in the photon. At large values of \pt\ the results of such a calculation, in the structure function language, will be more reliable as it sums the large logs, $\log(p_T^2/m_c^2)$, as opposed to calculating the contribution of the $2 \to 3 $ subprocess in fixed order of perturbation theory. We find that this contribution is large and comparable to the contribution from $γg$ fusion production of charm. Suitable cuts on the rapidity of the `away-side' large \pt\ jet allow a very neat separation between the contributions from the excitation process and from pair-production. We further find that including this excitation contribution we can reproduce the measured inclusive $D^*$ and $μ$ cross--sections measured by the ZEUS and H1 collaborations respectively, in a LO calculation.
dc.descriptionTalk given by RMG at `Photon 95', Sheffield, April 1995; LaTeX with equation.sty; 7 pages and 4 figures (not included). A compressed PS file of the entire paper, including figures, can be obtained via anonymous ftp from ftp://phenom.physics.wisc.edu/pub/preprints/1995/madph-95-889.ps.Z
dc.identifierhttps://arxiv.org/abs/hep-ph/9505297
dc.identifierhttp://arxiv.org/abs/hep-ph/9505297
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/45499
dc.subjectHigh Energy Physics - Phenomenology
dc.titleInclusive Charm Production at HERA and the Charm Content of the Photon
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