Asymmetries between the production of D+ and D- mesons from 500 GeV/c pi- nucleon interactions as a function of xF and pt2

Asymmetries between the production of D+ and D- mesons from 500 GeV/c pi- nucleon interactions as a function of xF and pt2

Phys.Lett.B371:157-162,1996 We present asymmetries between the production of D+ and D- mesons in Fermilab experiment E791 as a function of xF and pt**2. The data used here consist of 74,000 fully-reconstructed charmed mesons produced by a 500 GeV/c pi- beam on C and Pt foils. The measurements are co...

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Hauptverfasser: Aitala, E. M, Amato, S, Anjos, J. C, Appel, J. A, Aryal, M, Ashery, D, Astorga, J, Banerjee, S, Bediaga, I, Blaylock, G, Bracker, S. B, Burchat, P. R, Burnstein, R. A, Carter, T, Carvalho, H. S, Costa, I, Cremaldi, L. M, Darling, C, Denisenko, K, Fernandez, A, Gagnon, P, Gerzon, S, Gobel, C, Gounder, K, Granite, D, Halling, A. M, Herrera, G, Hurvits, G, James, C, Kasper, P. A, Kondakis, N, Kwan, S, Langs, D. C, Leslie, J, Lichtenstadt, J, Lundberg, B, Manacero, A, MayTal-Beck, S, Meadows, B, Neto, J. R. T. de Mello, Milburn, R. H, de Miranda, J. M, Napier, A, Nguyen, A, d'Oliveira, A. B, O'Shaughnessy, K, Peng, K. C, Perera, L. P, Purohit, M. V, Quinn, B, Radeztsky, S, Rafatian, A, Reay, N. W, Reidy, J. J, Reis, A. C, Rubin, H. A, Santha, A. K. S, Santoro, A. F. S, Schwartz, A. J, Sheaff, M, Sidwell, R. A, Slaughter, A. J, Smith, J. G, Sokoloff, M. D, Stanton, N. R, Sugano, K, Summers, D. J, Takach, S, Thorne, K, Tripathi, A. K, Watanabe, S, Weiss-Babai, R, Wiener, J, Witchey, N, Wolin, E, Yi, D, Zaliznyak, R, Zhang, C
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Sprache:eng
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Physics - High Energy Physics - Experiment
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Zusammenfassung:Phys.Lett.B371:157-162,1996 We present asymmetries between the production of D+ and D- mesons in Fermilab experiment E791 as a function of xF and pt**2. The data used here consist of 74,000 fully-reconstructed charmed mesons produced by a 500 GeV/c pi- beam on C and Pt foils. The measurements are compared to results of models which predict differences between the production of heavy-quark mesons that have a light quark in common with the beam (leading particles) and those that do not (non-leading particles). While the default models do not agree with our data, we can reach agreement with one of them, PYTHIA, by making a limited number of changes to parameters used.
DOI:10.48550/arxiv.hep-ex/9601001