Breitweg, J. et al. (2000) Measurement of inclusive (D-s(+/-)) photoproduction at HERA. Physics Letters B, 481(2-4), 213 -227. (doi: 10.1016/S0370-2693(00)00431-7)
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Abstract
The first measurement of inclusive D-s(+/-) photoproduction at HERA has been performed with the ZEUS detector for photon- proton centre-of-mass energies; 130 lt W lt 280 GeV The measured cross section for 3 lt p(perpendicular to)(Ds) lt 12 GeV and \eta(Ds)\ lt 1.5 is sigma(ep→DsX) = 3.79 +/- 0.59(stat.)(- 0.46)(+0.26)(syst.) +/- 0.94(br.) nb, where the last error arises from the uncertainty in the D-s(+/-) decay branching ratio. The measurements are compared with inclusive D*(+/-) photoproduction cross sections in the same kinematic region and with QCD calculations. The D-s(+/-) cross sections lie above a fixed-order next-to-leading order calculation and agree better with a tree-level O(alpha alpha(s)(3)) calculation that was tuned to describe the ZEUS D* (+/-) cross sections. The ratio of D-s(+/-) to D*(+/-) cross sections is 0.41 +/- 0.07(stat.)(- 0.05)(+0.03)(syst.) +/- 0.10 (br.). From this ratio, the strangeness-suppression factor in charm photoproduction, within the LUND string fragmentation model, has been calculated to be gamma(s)= 0.27 +/- 0.05 +/- 0.07(br.). The cross-section ratio and gamma(s) are in good agreement with those obtained in charm production in e(+)e(-) annihilation.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Saxon, Professor David and Bussey, Dr Peter and Doyle, Professor Anthony and Skillicorn, Professor Ian |
Authors: | Breitweg, J., Chekanov, S., Derrick, M., Krakauer, D., Magill, S., Musgrave, B., Pellegrino, A., Repond, J., Stanek, R., Yoshida, R., Mattingly, M.C.K., Abbiendi, G., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, C., Romeo, G.C., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Coppola, N., Corradi, M., de Pasquale, S., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Sartorelli, G., Garcia, Y.Z., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coboken, K., Crittenden, J., Deffner, R., Hartmann, H., Heinloth, K., Hilger, E., Irrgang, P., Jakob, H.P., Kappes, A., Katz, U.F., Kerger, R., Paul, E., Schnurbusch, H., Stifutkin, A., Tandler, J., Voss, K.C., Weber, A., Wieber, H., Bailey, D.S., Barret, O., Brook, N.H., Foster, B., Heath, G.P., Heath, H.F., McFall, J.D., Piccioni, D., Rodrigues, E., Scott, J., Tapper, R.J., Capua, M., Mastroberardino, A., Schioppa, M., Susinno, G., Jeoung, H.Y., Kim, J.Y., Lee, J.H., Lim, I.T., Ma, K.J., Pac, M.Y., Caldwell, A., Liu, W., Liu, X., Mellado, B., Paganis, S., Sampson, S., Schmidke, W.B., Sciulli, F., Chwastowski, J., Eskreys, A., Figiel, J., Klimek, K., Olkiewicz, K., Piotrzkowski, K., Przybycien, M.B., Stopa, P., Zawiejski, L., Bednarek, B., Jelen, K., Kisielewska, D., Kowal, A.M., Kowalski, T., Przybycien, M., Rulikowska-Zarebska, E., Suszycki, L., Szuba, D., Kotanski, A., Bauerdick, L.A.T., Behrens, U., Bienlein, J.K., Burgard, C., Dannheim, D., Desler, K., Drews, G., Fox-Murphy, A., Fricke, U., Goebel, F., Gottlicher, P., Graciani, R., Haas, T., Hain, W., Hartner, G.F., Hasell, D., Hebbel, K., Johnson, K.F., Kasemann, M., Koch, W., Kotz, U., Kowalski, H., Lindemann, L., Lohr, B., Martinez, M., Milite, M., Monteiro, T., Moritz, M., Notz, D., Pelucchi, F., Petrucci, M.C., Rohde, M., Saull, P.R.B., Savin, A.A., Schneekloth, U., Selonke, F., Sievers, M., Stonjek, S., Tassi, E., Wolf, G., Wollmer, U., Youngman, C., Zeuner, W., Coldewey, C., Viani, A.L.D., Meyer, A., Schlenstedt, S., Straub, P.B., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Benen, A., Eisenhardt, S., Markun, P., Raach, H., Wolfle, S., Bussey, P.J., Doyle, A.T., Lee, S.W., Macdonald, N., McCance, G.J., Saxon, D.H., Sinclair, L.E., Skillicorn, I.O., Waugh, R., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Wick, K., Garfagnini, A., Gialas, I., Gladilin, L.K., Kcira, D., Klanner, R., Lohrmann, E., Poelz, G., Zetsche, F., Goncalo, R., Long, K.R., Miller, D.B., Tapper, A.D., Walker, R., Mallik, U., Cloth, P., Filges, D., Ishii, T., Kuze, M., Nagano, K., Tokushuku, K., Yamada, S., Yamazaki, Y., Ahn, S.H., Lee, S.B., Park, S.K., Lim, H., Park, I.H., Son, D., Barreiro, F., Garcia, G., Glasman, C., Gonzalez, O., Labarga, L., del Peso, J., Redondo, I., Terron, J., Barbi, M., Corriveau, F., Hanna, D.S., Ochs, A., Padhi, S., Riveline, M., Stairs, D.G., Wing, M., Tsurugai, T., Bashkirov, V., Dolgoshein, B.A., Dementiev, R.K., Ermolov, P.F., Golubkov, Y.A., Katkov, I.I., Khein, L.A., Korotkova, N.A., Korzhavina, I.A., Kuzmin, V.A., Lukina, O.Y., Proskuryakov, A.S., Shcheglova, L.M., Solomin, A.N., Vlasov, N.N., Zotkin, S.A., Bokel, C., Botje, M., Brummer, N., Engelen, J., Grijpink, S., Koffeman, E., Kooijman, P., Schagen, S., van Sighem, A., and Tiecke, H. |
Subjects: | Q Science > QC Physics |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Physics Letters B |
Publisher: | Elsevier BV |
ISSN: | 0370-2693 |
ISSN (Online): | 1873-2445 |
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