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Study of the photon remnant in resolved photoproduction at HERA

ArXiv hep-ex/9505001 (1995)
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Kinematic evidence for top quark pair production in W+multijet events in pp¯ collisions at √s =1.8 TeV

Physical Review D American Physical Society (APS) 51:9 (1995) 4623-4637

Authors:

F Abe, MG Albrow, SR Amendolia, D Amidei, J Antos, C Anway-Wiese, G Apollinari, H Areti, M Atac, P Auchincloss, F Azfar, P Azzi, N Bacchetta, W Badgett, MW Bailey, J Bao, P de Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Bartalini, G Bauer, T Baumann, F Bedeschi, S Behrends, S Belforte, G Bellettini, J Bellinger, D Benjamin, J Benlloch, J Bensinger, D Benton, A Beretvas, JP Berge, S Bertolucci, A Bhatti, K Biery, M Binkley, F Bird, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, C Boswell, T Boulos, G Brandenburg, C Bromberg, E Buckley-Geer, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, J Cammerata, C Campagnari, M Campbell, A Caner, W Carithers, D Carlsmith, A Castro, Y Cen, F Cervelli, HY Chao, J Chapman, M-T Cheng, G Chiarelli, T Chikamatsu, CN Chiou, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, JD Cunningham, T Daniels, F DeJongh, S Delchamps, S Dell’Agnello, M Dell’Orso, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, M Dickson, JR Dittmann, S Donati, RB Drucker, A Dunn, K Einsweiler, JE Elias, R Ely, E Engels, S Eno, D Errede, S Errede, Q Fan, B Farhat, I Fiori, B Flaugher, GW Foster, M Franklin, M Frautschi, J Freeman, J Friedman, H Frisch, A Fry, TA Fuess, Y Fukui, S Funaki, G Gagliardi, S Galeotti, M Gallinaro, AF Garfinkel, S Geer, DW Gerdes, P Giannetti, L Gladney, D Glenzinski, M Gold, J Gonzalez, A Gordon, AT Goshaw, K Goulianos, H Grassmann, A Grewal, G Grieco, L Groer, C Grosso-Pilcher, C Haber, SR Hahn, R Hamilton, R Handler, RM Hans, K Hara, B Harral, RM Harris, SA Hauger, J Hauser, C Hawk, J Heinrich, D Cronin-Hennessey, R Hollebeek, L Holloway, A Hölscher, S Hong, G Houk, P Hu, BT Huffman, R Hughes, P Hurst, J Huston, J Huth, J Hylen, M Incagli, J Incandela, H Iso, H Jensen, CP Jessop, U Joshi, RW Kadel, E Kajfasz, T Kamon, T Kaneko, DA Kardelis, H Kasha, Y Kato, L Keeble, RD Kennedy, R Kephart, P Kesten, D Kestenbaum, RM Keup, H Keutelian, F Keyvan, DH Kim, HS Kim, SB Kim, SH Kim, YK Kim, L Kirsch, P Koehn, K Kondo, J Konigsberg, S Kopp, K Kordas, W Koska, E Kovacs, W Kowald, M Krasberg, J Kroll, M Kruse, SE Kuhlmann, E Kuns, AT Laasanen, N Labanca, S Lammel, JI Lamoureux, T LeCompte, S Leone, JD Lewis, P Limon, M Lindgren, TM Liss, N Lockyer, C Loomis, O Long, M Loreti, EH Low, J Lu, D Lucchesi, CB Luchini, P Lukens, J Lys, P Maas, K Maeshima, A Maghakian, P Maksimovic, M Mangano, J Mansour, M Mariotti, JP Marriner, A Martin, JAJ Matthews, R Mattingly, P McIntyre, P Melese, A Menzione, E Meschi, G Michail, S Mikamo, M Miller, R Miller, T Mimashi, S Miscetti, M Mishina, H Mitsushio, S Miyashita, Y Morita, S Moulding, J Mueller, A Mukherjee, T Muller, P Musgrave, LF Nakae, I Nakano, C Nelson, D Neuberger, C Newman-Holmes, L Nodulman, S Ogawa, SH Oh, KE Ohl, R Oishi, T Okusawa, C Pagliarone, R Paoletti, V Papadimitriou, S Park, J Patrick, G Pauletta, M Paulini, L Pescara, MD Peters, TJ Phillips, G Piacentino, M Pillai, R Plunkett, L Pondrom, N Produit, J Proudfoot, F Ptohos, G Punzi, K Ragan, F Rimondi, L Ristori, M Roach-Bellino, WJ Robertson, T Rodrigo, J Romano, L Rosenson, WK Sakumoto, D Saltzberg, V Scarpine, A Schindler, P Schlabach, EE Schmidt, MP Schmidt, O Schneider, GF Sciacca, A Scribano, S Segler, S Seidel, Y Seiya, G Sganos, A Sgolacchia, M Shapiro, NM Shaw, Q Shen, PF Shepard, M Shimojima, M Shochet, J Siegrist, A Sill, P Sinervo, P Singh, J Skarha, DA Smith, FD Snider, L Song, T Song, J Spalding, L Spiegel, P Sphicas, A Spies, L Stanco, J Steele, A Stefanini, K Strahl, J Strait, D Stuart, G Sullivan, K Sumorok, RL Swartz, T Takahashi, K Takikawa, F Tartarelli, W Taylor, PK Teng, Y Teramoto, S Tether, D Theriot, J Thomas, TL Thomas, R Thun, P Tipton, A Titov, S Tkaczyk, K Tollefson, A Tollestrup, J Tonnison, JF de Troconiz, J Tseng, M Turcotte, N Turini, F Uemura, F Ukegawa, G Unal, S van den Brink, S Vejcik, R Vidal, M Vondracek, RG Wagner, RL Wagner, N Wainer, RC Walker, CH Wang, G Wang, J Wang, MJ Wang, QF Wang, A Warburton, G Watts, T Watts, R Webb, C Wendt, WC Wester, T Westhusing, AB Wicklund, E Wicklund, R Wilkinson, HH Williams, P Wilson, BL Winer, J Wolinski, DY Wu, X Wu, J Wyss, A Yagil, W Yao, K Yasuoka, Y Ye, GP Yeh, P Yeh, M Yin, T Yoshida, D Yovanovitch, I Yu, JC Yun, A Zanetti, F Zetti, L Zhang, S Zhang, W Zhang, S Zucchelli
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Search for New Particles Decaying to Dijets in pp¯ Collisions at √s=1.8 TeV

Physical Review Letters American Physical Society (APS) 74:18 (1995) 3538-3543

Authors:

F Abe, MG Albrow, SR Amendolia, D Amidei, J Antos, C Anway-Wiese, G Apollinari, H Areti, M Atac, P Auchincloss, F Azfar, P Azzi, N Bacchetta, W Badgett, MW Bailey, J Bao, P de Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Bartalini, G Bauer, T Baumann, F Bedeschi, S Behrends, S Belforte, G Bellettini, J Bellinger, D Benjamin, J Benlloch, J Bensinger, D Benton, A Beretvas, JP Berge, S Bertolucci, A Bhatti, K Biery, M Binkley, F Bird, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, C Boswell, T Boulos, G Brandenburg, C Bromberg, E Buckley-Geer, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, J Cammerata, C Campagnari, M Campbell, A Caner, W Carithers, D Carlsmith, A Castro, Y Cen, F Cervelli, HY Chao, J Chapman, M-T Cheng, G Chiarelli, T Chikamatsu, CN Chiou, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, JD Cunningham, T Daniels, F DeJongh, S Delchamps, S Dell'Agnello, M Dell'Orso, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, M Dickson, JR Dittmann, S Donati, RB Drucker, A Dunn, K Einsweiler, JE Elias, R Ely, E Engels, S Eno, D Errede, S Errede, Q Fan, B Farhat, I Fiori, B Flaugher, GW Foster, M Franklin, M Frautschi, J Freeman, J Friedman, H Frisch, A Fry, TA Fuess, Y Fukui, S Funaki, G Gagliardi, S Galeotti, M Gallinaro, AF Garfinkel, S Geer, DW Gerdes, P Giannetti, N Giokaris, P Giromini, L Gladney, D Glenzinski, M Gold, J Gonzalez, A Gordon, AT Goshaw, K Goulianos, H Grassmann, A Grewal, G Grieco, L Groer, C Grosso-Pilcher, C Haber, SR Hahn, R Hamilton, R Handler, RM Hans, K Hara, B Harral, RM Harris, SA Hauger, J Hauser, C Hawk, J Heinrich, D Cronin-Hennessy, R Hollebeek, L Holloway, A Hölscher, S Hong, G Houk, P Hu, BT Huffman, R Hughes, P Hurst, J Huston, J Huth, J Hylen, M Incagli, J Incandela, H Iso, H Jensen, CP Jessop, U Joshi, RW Kadel, E Kajfasz, T Kamon, T Kaneko, DA Kardelis, H Kasha, Y Kato, L Keeble, RD Kennedy, R Kephart, P Kesten, D Kestenbaum, RM Keup, H Keutelian, F Keyvan, DH Kim, HS Kim, SB Kim, SH Kim, YK Kim, L Kirsch, P Koehn, K Kondo, J Konigsberg, S Kopp, K Kordas, W Koska, E Kovacs, W Kowald, M Krasberg, J Kroll, M Kruse, SE Kuhlmann, E Kuns, AT Laasanen, N Labanca, S Lammel, JI Lamoureux, T LeCompte, S Leone, JD Lewis, P Limon, M Lindgren, TM Liss, N Lockyer, C Loomis, O Long, M Loreti, EH Low, J Lu, D Lucchesi, CB Luchini, P Lukens, P Maas, K Maeshima, A Maghakian, P Maksimovic, M Mangano, J Mansour, M Mariotti, JP Marriner, A Martin, JAJ Matthews, R Mattingly, P McIntyre, P Melese, A Menzione, E Meschi, G Michail, S Mikamo, M Miller, R Miller, T Mimashi, S Miscetti, M Mishina, H Mitsushio, S Miyashita, Y Morita, S Moulding, J Mueller, A Mukherjee, T Muller, P Musgrave, LF Nakae, I Nakano, C Nelson, D Neuberger, C Newman-Holmes, L Nodulman, S Ogawa, SH Oh, KE Ohl, R Oishi, T Okusawa, C Pagliarone, R Paoletti, V Papadimitriou, S Park, J Patrick, G Pauletta, M Paulini, L Pescara, MD Peters, TJ Phillips, G Piacentino, M Pillai, R Plunkett, L Pondrom, N Produit, J Proudfoot, F Ptohos, G Punzi, K Ragan, F Rimondi, L Ristori, M Roach-Bellino, WJ Robertson, T Rodrigo, J Romano, L Rosenson, WK Sakumoto, D Saltzberg, A Sansoni, V Scarpine, A Schindler, P Schlabach, EE Schmidt, MP Schmidt, O Schneider, GF Sciacca, A Scribano, S Segler, S Seidel, Y Seiya, G Sganos, A Sgolacchia, M Shapiro, NM Shaw, Q Shen, PF Shepard, M Shimojima, M Shochet, J Siegrist, A Sill, P Sinervo, P Singh, J Skarha, K Sliwa, DA Smith, FD Snider, L Song, T Song, J Spalding, L Spiegel, P Sphicas, A Spies, L Stanco, J Steele, A Stefanini, K Strahl, J Strait, D Stuart, G Sullivan, K Sumorok, RL Swartz, T Takahashi, K Takikawa, F Tartarelli, W Taylor, PK Teng, Y Teramoto, S Tether, D Theriot, J Thomas, TL Thomas, R Thun, M Timko, P Tipton, A Titov, S Tkaczyk, K Tollefson, A Tollestrup, J Tonnison, JF de Troconiz, J Tseng, M Turcotte, N Turini, N Uemura, F Ukegawa, G Unal, S van den Brink, S Vejcik, R Vidal, M Vondracek, RG Wagner, RL Wagner, N Wainer, RC Walker, CH Wang, G Wang, J Wang, MJ Wang, QF Wang, A Warburton, G Watts, T Watts, R Webb, C Wendt, H Wenzel, WC Wester, T Westhusing, AB Wicklund, E Wicklund, R Wilkinson, HH Williams, P Wilson, BL Winer, J Wolinski, DY Wu, X Wu, J Wyss, A Yagil, W Yao, K Yasuoka, Y Ye, GP Yeh, P Yeh, M Yin, J Yoh, T Yoshida, D Yovanovitch, I Yu, JC Yun, A Zanetti, F Zetti, L Zhang, S Zhang, W Zhang, S Zucchelli
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Measurement of the cross section for the reaction γp → J/ψ p with the ZEUS detector at HERA

Physics Letters B Elsevier 350:1 (1995) 120-134

Authors:

ZEUS Collaboration, M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave, J Repond, R Stanek, RL Talaga, H Zhang, R Ayad, G Bari, M Basile, L Bellagamba, D Boscherini, A Bruni, G Bruni, P Bruni, G Cara Romeo, G Castellini, M Chiarini, L Cifarelli, F Cindolo, A Contin, M Corradi, I Gialas, P Giusti, G Iacobucci, G Laurenti, G Levi, A Margotti, T Massam, R Nania, C Nemoz, F Palmonari, A Polini, G Sartorelli, R Timellini, Y Zamora Garcia, A Zichichi, A Bargende, J Crittenden, K Desch, B Diekmann, T Doeker, M Eckert, L Feld, A Frey, M Geerts, G Geitz, M Grothe, T Haas, H Hartmann, D Haun, K Heinloth, E Hilger, H-P Jakob, UF Katz, SM Mari, A Mass, S Mengel, J Mollen, E Paul, Ch Rembser, R Schattevoy, D Schramm, J Stamm, R Wedemeyer, S Campbell-Robson, A Cassidy, N Dyce, B Foster, S George, R Gilmore, GP Heath, HF Heath, TJ Llewellyn, CJS Morgado, DJP Norman, JA O'Mara, RJ Tapper, SS Wilson, R Yoshida, RR Rau, M Arneodo, L Iannotti, M Schioppa, G Susinno, A Bernstein, A Caldwell, N Cartiglia, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, Q Zhu, P Borzemski, J Chwastowski, A Eskreys, K Piotrzkowski, M Zachara, L Zawiejski, L Adamczyk, B Bednarek, K Jeleń, D Kisielewska, T Kowalski, E Rulikowska-Zarȩbska, L Suszycki, J Zaja̧c, A Kotański, M Przybycień, LAT Bauerdick, U Behrens, H Beier, JK Bienlein, C Coldewey, O Deppe, K Desler, G Drews, M Flasiński, DJ Gilkinson, C Glasman, P Göttlicher, J Große-Knetter, B Gutjahr, W Hain, D Hasell, H Heßling, Y Iga, P Joos, M Kasemann, R Klanner, W Koch, L Köpke, U Kötz, H Kowalski, J Labs, A Ladage, B Löhr, M Löwe, D Lüke, O Mańczak, T Monteiro, JST Ng, S Nickel, D Notz, K Ohrenberg, M Roco, M Rohde, J Roldán, U Schneekloth, W Schulz, F Selonke, E Stiliaris, B Surrow, T Voß, D Westphal, G Wolf, C Youngman, JF Zhou, HJ Grabosch, A Kharchilava, A Leich, MCK Mattingly, A Meyer, S Schlenstedt, N Wulff, G Barbagli, P Pelfer, G Anzivino, G Maccarrone, S De Pasquale, L Votano, A Bamberger, S Eisenhardt, A Freidhof, S Söldner-Rembold, J Schroeder, T Trefzger, NH Brook, PJ Bussey, AT Doyle, JI Fleck, DH Saxon, ML Utley, AS Wilson, A Dannemann, U Holm, D Horstmann, T Neumann, R Sinkus, K Wick, E Badura, BD Burow, L Hagge, E Lohrmann, J Mainusch, J Milewski, M Nakahata, N Pavel, G Poelz, W Schott, F Zetsche, TC Bacon, I Butterworth, E Gallo, VL Harris, BYH Hung, KR Long, DB Miller, PPO Morawitz, A Prinias, JK Sedgbeer, AF Whitfield, U Mallik, E McCliment, MZ Wang, SM Wang, JT Wu, Y Zhang, P Cloth, D Filges, SH An, SM Hong, SW Nam, SK Park, MH Suh, SH Yon, R Imlay, S Kartik, H-J Kim, RR McNeil, W Metcalf, VK Nadendla, F Barreiro, G Cases, R Graciani, JM Hernández, L Hervás, L Labarga, J del Peso, J Puga, J Terron, JF de Trocóniz, GR Smith, F Corriveau, DS Hanna, J Hartmann, LW Hung, JN Lim, CG Matthews, PM Patel, LE Sinclair, DG Stairs, M St.Laurent, R Ullmann, G Zacek, V Bashkirov, BA Dolgoshein, A Stifutkin, GL Bashindzhagyan, PF Ermolov, LK Gladilin, YA Golubkov, VD Kobrin, VA Kuzmin, AS Proskuryakov, AA Savin, LM Shcheglova, AN Solomin, NP Zotov, M Botje, F Chlebana, A Dake, J Engelen, M de Kamps, P Kooijman, A Kruse, H Tiecke, W Verkerke, M Vreeswijk, L Wiggers, E de Wolf, R van Woudenberg, D Acosta, B Bylsma, LS Durkin, K Honscheid, C Li, TY Ling, KW McLean, WN Murray, IH Park, TA Romanowski, R Seidlein, DS Bailey, GA Blair, A Byrne, RJ Cashmore, AM Cooper-Sarkar, D Daniels, RCE Devenish, N Harnew, M Lancaster, PE Luffman, L Lindemann, JD McFall, C Nath, VA Noyes, A Quadt, H Uijterwaal, R Walczak, FF Wilson, T Yip, G Abbiendi, A Bertolin, R Brugnera, R Carlin, F Dal Corso, M De Giorgi, U Dosselli, S Limentani, M Morandin, M Posocco, L Stanco, R Stroili, C Voci, J Bulmahn, JM Butterworth, RG Feild, BY Oh, JJ Whitmore, G D'Agostini, G Marini, A Nigro, E Tassi, JC Hart, NA McCubbin, K Prytz, TP Shah, TL Short, E Barberis, T Dubbs, C Heusch, M Van Hook, B Hubbard, W Lockman, JT Rahn, HF-W Sadrozinski, A Seiden, J Biltzinger, RJ Seifert, AH Walenta, G Zech, H Abramowicz, G Briskin, S Dagan, A Levy, T Hasegawa, M Hazumi, T Ishii, M Kuze, S Mine, Y Nagasawa, M Nakao, I Suzuki, K Tokushuku, S Yamada, Y Yamazaki, M Chiba, R Hamatsu, T Hirose, K Homma, S Kitamura, Y Nakamitsu, K Yamauchi, R Cirio, M Costa, MI Ferrero, L Lamberti, S Maselli, C Peroni, R Sacchi, A Solano, A Staiano, M Dardo, DC Bailey, D Bandyopadhyay, F Benard, M Brkic, MB Crombie, DM Gingrich, GF Hartner, KK Joo, GM Levman, JF Martin, RS Orr, CR Sampson, RJ Teuscher, CD Catterall, TW Jones, PB Kaziewicz, JB Lane, RL Saunders, J Shulman, K Blankenship, B Lu, LW Mo, W Bogusz, K Charchuła, J Ciborowski, J Gajewski, G Grzelak, M Kasprzak, M Krzyżanowski, K Muchorowski, RJ Nowak, JM Pawlak, T Tymieniecka, AK Wróblewski, JA Zakrzewski, AF Żarnecki, M Adamus, Y Eisenberg, U Karshon, D Revel, D Zer-Zion, I Ali, WF Badgett, B Behrens, S Dasu, C Fordham, C Foudas, A Goussiou, RJ Loveless, DD Reeder, S Silverstein, WH Smith, A Vaiciulis, M Wodarczyk, T Tsurugai, S Bhadra, ML Cardy, C-P Fagerstroem, WR Frisken, KM Furutani, M Khakzad, WB Schmidke
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Study of D*(2010)±production in ep collisions at HERA

Physics Letters B 349:1-2 (1995) 225-237

Authors:

M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave, J Repond, R Stanek, RL Talaga, H Zhang, R Ayad, G Bari, M Basile, L Bellagamba, D Boscherini, A Bruni, G Bruni, P Bruni, G Cara Romeo, G Castellini, M Chiarini, L Cifarelli, F Cindolo, A Contin, M Corradi, I Gialas, P Giusti, G Iacobucci, G Laurenti, G Levi, A Margotti, T Massam, R Nania, C Nemoz, F Palmonari, A Polini, G Sartorelli, R Timellini, Y Zamora Garcia, A Zichichi, A Bargende, J Crittenden, K Desch, B Diekmann, T Doeker, M Eckert, L Feld, A Frey, M Geerts, G Geitz, M Grothe, T Haas, H Hartmann, D Haun, K Heinloth, E Hilger, HP Jakob, UF Katz, SM Mari, A Mass, S Mengel, J Mollen, E Paul, C Rembser, R Schattevoy, D Schramm, J Stamm, R Wedemeyer, S Campbell-Robson, A Cassidy, N Dyce, B Foster, S George, R Gilmore, GP Heath, HF Heath, TJ Llewellyn, CJS Morgado, DJP Norman, JA O'Mara, RJ Tapper, SS Wilson, R Yoshida, RR Rau, M Arneodo, L Iannotti, M Schioppa, G Susinno, A Bernstein, A Caldwell, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, Q Zhu, P Borzemski, J Chwastowski, A Eskreys, K Piotrzkowski

Abstract:

We report the first observation of charmed mesons with the ZEUS detector at HERA using the decay channel D*+→ (D0→ K-π+)π+(+c.c.). Clear signals in the mass difference ΔM=M(D*)-M(D0) as well as in the M(Kπ) distribution at the D0mass are found. The ep cross section for inclusive D*±production with Q2< 4 GeV2in the γp centre-of-mass energy range 115 < W < 275 GeV has been determined to be (32±7-7+4) nb in the kinematic regionpt(D*) ≥ 1.7 GeV, |η(D*)| < 1.5. Extrapolating outside this region, assuming a mass of the charm quark of 1.5 GeV, we estimate the ep charm cross section to be σ(ep → ccX) = (0.45 ± 0.11-0.22+0.37) μb at s=296 GeV and 〈W〉 = 198 GeV. The average γp charm cross section σ(γp → ccX) is found to be (6.3 ± 2.2-3.0+6.3) μb at 〈W〉 = 163 GeV and (16.9 ± 5.2-8.5+13.9) μb at 〈W〉 = 243 GeV. The increase of the total charm photoproduction cross section by one order of magnitude with respect to low energy data experiments is well described by QCD NLO calculations using singular gluon distributions in the proton. © 1995.
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