Measurement of the cross section of charmed hadrons and the nuclear dependence alpha

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With data from the SELEX experiment we study charm hadro-production. We report the differential production cross sections as function of the longitudinal and transverse momentum, as well as for two different target materials, of 14 charmed hadron and/or their decay modes. This is the most extensive study to date. SELEX is a fixed target experiment at Fermilab with high forward acceptance; it took data during 1996-1997 with 600 GeV/c {Sigma}{sup -} and {pi}{sup -}, and 540 GeV/c proton and {pi}{sup +} beams. It used 5 target foils (two copper and three diamond). We use the results to determine {alpha}, used ... continued below

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401 pages

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Blanco-Covarrubias, E.Alejandro & U., /San Luis Potosi December 1, 2009.

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Description

With data from the SELEX experiment we study charm hadro-production. We report the differential production cross sections as function of the longitudinal and transverse momentum, as well as for two different target materials, of 14 charmed hadron and/or their decay modes. This is the most extensive study to date. SELEX is a fixed target experiment at Fermilab with high forward acceptance; it took data during 1996-1997 with 600 GeV/c {Sigma}{sup -} and {pi}{sup -}, and 540 GeV/c proton and {pi}{sup +} beams. It used 5 target foils (two copper and three diamond). We use the results to determine {alpha}, used in parametrizing the production cross section as {infinity} A{sup {alpha}}, where A is the mass number of the target nuclei. We found within our statistics that {alpha} is independent of the longitudinal momentum fraction x{sub F} in the interval 0.1 < x{sub F} < 1.0, with {alpha} = 0.778 {+-} 0.014. The average value of {alpha} for charm production by pion beams is {alpha}{sub meson} = 0.850 {+-} 0.028. This is somewhat larger than the corresponding average {alpha}{sub baryon} = 0.755 {+-} 0.016 for charm production by baryon beams ({Sigma}{sup -} and protons).

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401 pages

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  • Report No.: FERMILAB-THESIS-2009-43
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/969509 | External Link
  • Office of Scientific & Technical Information Report Number: 969509
  • Archival Resource Key: ark:/67531/metadc929582

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 1, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 6, 2016, 1:09 p.m.

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Blanco-Covarrubias, E.Alejandro & U., /San Luis Potosi. Measurement of the cross section of charmed hadrons and the nuclear dependence alpha, thesis or dissertation, December 1, 2009; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc929582/: accessed May 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.