A search for excited fermions in $e+p$ collisions at HERA

Autor: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Yoshida, R, Zhang, H, Mattingly, Mck, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, De Pasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Feld, L, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, Ds, Campbell Robson, S, Cottingham, Wn, Foster, B, Hall Wilton, R, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Arneodo, M, Ayad, R, Capua, M, Garfagnini, Alberto, Iannotti, L, Schioppa, M, Susinno, G, Kim, Jy, Lee, Jh, Lim, It, Pac, My, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, Ja, Ritz, S, Sampson, S, Sciulli, F, Straub, Pb, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosse Knetter, J, Haas, T, Hain, W, Hasell, D, Johnson, Kf, Kasemann, E, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Manczak, O, Milewsci, J, Monteiro, T, Jst, Ng, Notz, D, Ohrenberg, K, Parks, Ih, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, Jj, Savin, Aa, Schneekloth, U, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, Af, Zeuner, W, Burow, Bd, Grabosch, Hj, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bohnet, I, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Strickland, E, Utley, Ml, Waugh, R, Wilson, As, Gendner, N, Holm, U, Meyer Larsen, A, Salehi, H, Wick, K, Gladilin, K, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Butterworth, I, Cole, Je, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Sm, Wu, Jt, Cloth, P, Filges, D, Fleck, Ji, Ishii, T, Kuze, M, Nakao, M, Tokushuku, K, Yamada, S, Yamazaki, Y, An, Sh, Lee, Sb, Nam, Sw, Park, Hs, Park, Sk, Barreiro, F, Fernandez, Jp, Garcia, G, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz JF, Corriveau, F, Hanna, Ds, Hartmann, J, Hung, Lw, Lim, Jn, Murray, Wn, Ochs, A, Riveline, M, Stairs, Dg, St Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Golubkov, Ya, Khein, La, Korotkova, Na, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, As, Shcheglova, Lm, Shumilin, Av, Solomin, An, Zotkin, Sa, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Kooijman, P, Kruse, A, van Sighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, Ls, Gilmore, J, Ginsburg, Cm, Kim, Cl, Ling, Ty, Nylander, P, Romanowski, Ta, Blaikley, He, Cashmore, Rj, Cooper Sarkar AM, Devenish, Rce, Edmonds, Jk, Harnew, N, Lancaster, M, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Ruske, O, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, Ds, Bertolin, A, Brugnera, Riccardo, Carlin, Roberto, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, Roberto, Voci, C, Bulmahn, J, Feild, Rg, Oh, By, Okrasinski, Jr, Whitmore, Jj, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, Jc, Mccubbin, Na, Shah, Tp, Epperson, D, Heusch, C, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Schwarzer, O, Walenta, Ah, Abramowicz, H, Briskin, G, Dagan, S, Doeker, T, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Suzuki, I, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Monaco, V, Peroni, C, Petrucci, Mc, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Pawlak, R, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Badgett, Wf, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, D, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Frisken, Wr, Khakzad, M, Schmidke, Wb
Přispěvatelé: Zeus (IHEF, IoP, FNWI)
Rok vydání: 1997
Předmět:
Zdroj: Zeitschrift für Physik. C, Particles and Fields, 76. Springer Verlag
ISSN: 0170-9739
Popis: Using the ZEUS detector at HERA, we have searched for heavy excited states of electrons, neutrinos, and quarks in $e^+p$ collisions at a center-of-mass energy of 300~GeV. With an integrated luminosity of 9.4~pb$^{-1}$, no evidence was found for electroweak production and decay of such states. Limits on the production cross section times branching ratio and on the characteristic couplings, $f/\Lambda$, are derived for masses up to 250~GeV. For the particular choice $f/\Lambda = 1/M_{f^*}$, we exclude at the 95% confidence level excited electrons with mass between 30 and 200~GeV, excited electron neutrinos with mass between 40 and 96~GeV, and quarks excited electroweakly with mass between 40 and 169~GeV.
Comment: 39 pages including 11 figures
Databáze: OpenAIRE