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Search for resonances decaying to e(+)-jet in e(+)p interactions at HERA

Breitweg, J. et al. (2000) Search for resonances decaying to e(+)-jet in e(+)p interactions at HERA. European Physical Journal C, 16 (2). 253 -267. ISSN 1434-6044 (doi:10.1007/s100520050018)

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Abstract

The e(+)-jet invariant mass spectrum produced in the reaction e(+)p → e(+)X has been studied at a center-of-mass energy of 300 GeV. The data were collected. using the ZEUS detector operating at the HERA collider, and correspond to an integrated luminosity of 47.7 pb(-1). The observed mass spectrum is in good agreement with Standard Model expectations up to an e(+)- jet mass of 210 GeV. Above this mass. some excess is seen. The angular distribution of these events is typical of high-Q(2) neutral current events and does not give convincing evidence for the presence of a narrow scalar or vector state. Limits are presented on the product of cross section and branching ratio for such a slate and are interpreted as limits on leptoquark or R-parity-violating squark production. Specific leptoquark types are ruled out at 95% confidence level for coupling strength lambda = 0.3 for masses between 150 and 280 GeV.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Saxon, Prof David and Bussey, Dr Peter and Doyle, Prof Anthony and Skillicorn, Prof 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, G., 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, K., 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., Sacchi, R., Sampson, S., Sciulli, F., Chwastowski, J., Eskreys, A., Figiel, J., Klimek, K., Olkiewicz, K., Piotrzkowski, K., Przybycien, M.B., Stopa, P., Zawiejski, L., Adamczyk, 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., 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., Grabosch, H.J., Viani, A.L.D., Meyer, A., Schlenstedt, S., Straub, P.B., Barbagli, C., Gallo, E., Pelfer, P., Maccarrone, C., 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., Dannheim, D., 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., Dologshein, 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., and Schagen, S.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal C
ISSN:1434-6044

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