Leptoquarks and compositeness scales from a contact interaction analysis of deep inelastic e±p scattering at HERA

A contact interaction analysis is presented to search for new phenomena beyond the Standard Model in deep inelastic e ± p → e ± hadrons scattering. The data are collected with the H1 detector at HERA and correspond to integrated luminosities of 0.909 pb −1 and 2.947 pb −1 for electron and positron b...

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Veröffentlicht in:	Physics letters. B 1995, Vol.353 (4), p.578-588
Hauptverfasser:	Appuhn, R.-D., Babaev, A., Bassler, U., Bertrand-Coremans, G., Besançon, M., Borras, K., Boudry, V., Brasse, F., Buchholz, R., Burke, S., Charlet, M., Clarke, D., Clegg, A.B., Courau, A., Coutures, Ch, Criegee, L., Cussans, D.G., Dainton, J.B., Delcourt, B., De Roeck, A., De Wolf, E.A., Düllmann, D., Dünger, O., Ebert, J., Eckerlin, G., Erdmann, M., Evrard, E., Ferrarotto, F., Fleischer, M., Flieser, M., Fomenko, A., Fominykh, B., Fretwurst, E., Gellrich, A., Glazov, A., Grässler, R., Hess, M.F., Hiller, K.H., Hladký, J., Höppner, M., Hudgson, V.L., Hufnagel, H., Janoth, J., Jansen, T., Kaschowitz, R., Katzy, J., Klein, M., Kleinwort, C., Köhler, T., Korbel, V., Kostka, P., Krämerkämper, T., Krehbiel, H., Krüner-Marquis, U., Kurča, T., Kuznik, B., Lander, R., Landon, M.P.J., Laporte, J.-F., Lipinski, J., Lomas, J.W., Lüke, D., Marks, J., Martyniak, J., Maxfield, S.J., Meyer, J., Migliori, A., Mroczko, E., Müller, G., Müller, K., Nagovizin, V., Nahnhauer, R., Newton, D., Nicholls, T.C., Niedzballa, Ch, Oakden, M., Panaro, E., Patel, G.D., Pichler, Ch, Pope, G., Rabbertz, K., Ribarics, P., Robertson, S.M., Sahlmann, N., Schleif, S., Sefkow, F., Sirois, Y., Spiekermann, J., Starosta, R., Steenbock, M., Steinberg, R., Stella, B., Stößlein, U., Straumann, U., Tchernyshov, V., Turnau, J., Valkár, S., Verrecchia, P., Wagener, A., Zarbock, D.
Format:	Artikel
Sprache:	eng
Schlagworte:	High Energy Physics - Experiment Physics
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Zusammenfassung:	A contact interaction analysis is presented to search for new phenomena beyond the Standard Model in deep inelastic e ± p → e ± hadrons scattering. The data are collected with the H1 detector at HERA and correspond to integrated luminosities of 0.909 pb −1 and 2.947 pb −1 for electron and positron beams, respectively. The differential cross sections dσ/d Q 2 are measured in the Q 2 range between 160 GeV 2 and 20 000 GeV 2. The absence of any significant deviation from the Standard Model prediction is used to constrain the couplings and masses of new leptoquarks and to set limits on electron-quark compositeness scales and on the radius of light quarks.
ISSN:	0370-2693 1873-2445
DOI:	10.1016/0370-2693(95)00611-N