Jun 13 – 17, 2011
Europe/Berlin timezone
Proceedings are now available online at <a href="http://www.slac.stanford.edu/econf/C110613/">eConf</a>

Cross section for quasi-real photo-production of charged hadrons with high transverse momenta in muon-deuteron scattering

Jun 14, 2011, 3:10 PM
Club 1 (Künstlerhaus)

Club 1


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Mr Christian Hoeppner (TU Muenchen)


The measurement of unpolarized high-$p_T$ hadron-production cross sections provides an important benchmark for the applicability of perturbative QCD (pQCD) calculations, especially at lower center-of- mass energies, where corrections beyond the next-to-leading order could become important. These calculations rely on the factorization of unpolarized and polarized cross sections into non-perturbative parton distribution functions, which parametrize the structure of the nucleon, hard scattering cross sections, calculable in pQCD, and non-perturbative fragmentation functions. In this contribution we shall present the first measurement of the unpolarized cross section for the quasi-real photo-production of charged hadrons with high transverse momenta from muon-deuteron scattering data at $/sqrt{s}=17.4$\,GeV at COMPASS. The dependence of the cross section on $p_T$ for forward and central rapidities is discussed. The presented cross section results are compared to recent NLO pQCD calculations.

Primary author

Mr Christian Hoeppner (TU Muenchen)

Presentation materials