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Insertion of STC into TRT at the Department of Physics, Oxford
Credit: CERN

Professor Amanda Cooper-Sarkar

Emeritus Professor

Research theme

  • Fundamental particles and interactions

Sub department

  • Particle Physics

Research groups

  • ATLAS
Amanda.Cooper-Sarkar@physics.ox.ac.uk
Telephone: 01865 (2)73406
Denys Wilkinson Building, room 659
  • About
  • Publications

Measurement of the proton structure function F2 in ep scattering at HERA

Physics Letters B 316:2-3 (1993) 412-426

Authors:

M Derrick, D Krakauer, S Magill, B Musgrave, J Repond, S Repond, R Stanek, RL Talaga, J Thron, F Arzarello, R Ayad, G Bari, M Basile, L Bellagamba, D Boscherini, A Bruni, G Bruni, P Bruni, G Cara Romero, G Castellini, M Chiarini, L Cifarelli, F Cindolo, F Ciralli, A Contin, S D'Auria, C Del Papa, F Frasconi, P Giusti, G Iacobucci, G Laurenti, G Levi, O Lin, B Losowski, G Maccarrone, A Margotti, T Massam, D Monaldi, R Nania, C Nemoz, F Palmonari, G Sartorelli, R Timellini, Y Zamora Garcia, A Zichini, A Bargende, J Crittenden, K Desch, B Diekmann, T Doeker, A Frey, M Geerts, G Geitz, H Hartmann, D Haun, K Heinloth, E Hilger, HP Jacob, S Kramaczyk, M Kückes, A Mass, S Mengel, J Mollen, H Müsch, E Paul, R Schattevoy, JL Schneider, D Schramm, R Wedemeyer, A Cassidy, DG Cussans, N Dyce, B Foster, S George, R Gilmore, GP Heath, HF Heath, M Lancaster, TJ Llwellyn, CJS Morgado, JA O'Mara, RJ Tapper, SS Wilson, R Yoshida, RR Rau, M Arneodo, M Schioppa, G Susinno, A Bernstein, A Caldwell, I Gialas, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, P Borzemski, J Chwastowski, A Dwuraźny

Abstract:

This paper presents our first measurement of the F2 structure function in neutral-current, deep inelastic scattering using the ZEUS detector at HERA, the ep colliding beam facility at DESY. The data correspond to an integrated luminosity of 24.7 nb-1. Results are presented for data in range of Q2 from 10 GeV2 to 4700 GeV2 and Bjorken x down to 3.0 × 10-4. The F2 structure function increases rapidly as x decreases. © 1993.
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Search for excited electrons using the ZEUS detector

Physics Letters B 316:1 (1993) 207-218

Authors:

M Derrick, D Krakauer, S Magill, B Musgrave, J Repond, S Repond, R Stanek, RL Talaga, J Thron, F Arzarello, 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, F Ciralli, A Contin, S D'Auria, C Del Papa, F Frasconi, P Giusti, G Iacobucci, G Laurenti, G Levi, Q Lin, B Lisowski, G Maccarrone, A Margotti, T Massam, R Nania, C Memoz, F Palmonari, G Sartorelli, R Timellini, Y Zamora Garcia, A Zichichi, A Bargende, J Crittenden, H Dabbous, K Desch, B Diekmann, T Doeker, M Geerts, G Geitz, H Hartmann, D Haun, K Heinloth, E Hilger, HP Jakob, S Kramarczyk, M Kückes, A Mass, S Mengel, J Mollen, D Monaldi, H Müsch, E Paul, R Schattevoy, JL Schneider, D Schramm, R Wedemeyer, A Cassidy, DG Cussans, N Dyce, B Foster, R Gilmore, GP Heath, HF Heath, M Lancaster, TJ Llewellyn, J Malos, CJS Morgado, RJ Tapper, SS Wilson, R Yoshida, RR Rau, M Arneodo, T Barillari, M Schioppa, G Susinno, A Bernstein, A Caldwell, I Gialas, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, J Chwastowski, A Dwuraźny, A Eskreys

Abstract:

This paper reports a search for excited electrons at the HERA electron-proton collider. In a sample corresponding to an integrated luminosity of 26 nb-, no evidence was found for any resonant state decaying into e-γ, νW- or e-Z0. Limits on the coupling strength of an excited electron have been determined for masses between 45 and 225 GeV. This study also reports the observation of the wide-angle eγ Compton scattering process. © 1993.
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Observation of events with a large rapidity gap in deep inelastic scattering at HERA

Physics Letters B Elsevier 315:3-4 (1993) 481-493

Authors:

ZEUS Collaboration, M Derrick, D Krakauer, S Magill, B Musgrave, J Repond, S Repond, R Stanek, RL Talaga, J Thron, F Arzarello, 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, F Ciralli, A Contin, S D'Auria, C Del Papa, F Frasconi, P Giusti, G Iacobucci, G Laurenti, G Levi, Q Lin, B Lisowski, G Maccarrone, A Margotti, T Massam, R Nania, C Nemoz, F Palmonari, G Sartorelli, R Timellini, Y Zamora Garcia, A Zichichi, A Bargende, J Crittenden, K Desch, B Diekmann, T Doeker, A Frey, M Geerts, G Geitz, H Hartmann, D Haun, K Heinloth, E Hilger, H-P Jakob, S Kramarczyk, M Kückes, A Mass, S Mengel, J Mollen, D Monaldi, H Müsch, E Paul, R Schattevoy, J-L Schneider, D Schramm, R Wedemeyer, A Cassidy, DG Cussans, N Dyce, B Foster, R Gilmore, GP Heath, HF Heath, M Lancaster, TJ Llewellyn, J Malos, CJS Morgado, RJ Tapper, SS Wilson, R Yoshida, RR Rau, M Arneodo, M Schioppa, G Susinno, A Bernstein, A Caldwell, I Gialas, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, P Borzemski, J Chwastowski, A Dwuraźny, A Eskreys, Z Jakubowski, B Niziol, K Piotrzkowski, M Zachara, L Zawiejski, L Adamczyk, B Bednarek, K Eskreys, K Jeleń, D Kisielewska, T Kowalski, E Rulikowska-Zarȩbska, L Suszycki, J Zaja̧c, T Kȩdzieski, A Kotański, M Przybycień, LAT Bauerdick, U Behrens, JK Bienlein, S Böttcher, C Coldewey, A Dannemann, G Drews, P Erhard, M Flasiński, I Fleck, R Gläser, P Göttlicher, B Gutjahr, T Haas, L Hagge, W Hain, D Hasell, H Hultschig, G Jahnen, P Joos, M Kasemann, R Klanner, W Koch, L Köpke, U Kötz, H Kowalski, W Kröger, J Krüger, J Labs, A Ladage, B Löhr, M Löwe, D Lüke, J Mainusch, O Manczak, M Momayezi, JST Ng, S Nickel, D Notz, K-U Pösnecker, M Rohde, J Roldán, E Ros, U Schneekloth, J Schroeder, W Schulz, F Selonke, E Stiliaris, E Tscheslog, T Tsurugai, W Vogel, G Wolf, C Youngman, HJ Grabosch, A Leich, A Meyer, C Rethfeldt, S Schlenstedt, G Barbagli, A Francescato, M Nuti, P Pelfer, G Anzivino, R Casaccia, S De Pasquale, S Qian, L Votano, A Bamberger, A Freidhof, T Poser, S Söldner-Rembold, G Theisen, T Trefzger, NH Brook, PJ Bussey, AT Doyle, JR Forbes, VA Jamieson, C Raine, DH Saxon, H Brückmann, G Gloth, U Holm, H Kammerlocher, B Krebs, T Neumann, K Wick, A Fürtjes, E Lohrmann, J Milewski, M Nakahata, N Pavel, G Poelz, W Schott, J Terron, F Zetsche, TC Bacon, R Beuselinck, I Butterworth, E Gallo, VL Harris, DB Miller, A Prinias, JK Sedgbeer, A Vorvolakos, A Whitfield, T Bienz, H Kreutzmann, U Mallik, E McCliment, M Roco, MZ Wang, P Cloth, D Filges, SH An, SM Hong, CO Kim, TY Kim, 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, L Hervás, L Labarga, J del Peso, JF de Trocóniz, F Ikraiam, JK Mayer, GR Smith, F Corriveau, DJ Gilkinson, DS Hanna, J Hartmann, LW Hung, JN Lim, R Meijer Drees, JW Mitchell, PM Patel, LE Sinclair, DG Stairs, M St.Laurent, R Ullmann, GL Bashindzhagyan, PF Ermolov, LK Gladilin, YA Golubkov, VA Kuzmin, EN Kuznetsov, AA Savin, AG Voronin, NP Zotov, S Bentvelsen, M Botje, A Dake, J Engelen, P de Jong, M de Kamps, P Kooijman, A Kruse, H van der Lugt, V O'Dell, A Tenner, H Tiecke, H Uijterwaal, M Vreeswijk, L Wiggers, E de Wolf, R van Woudenberg, B Bylsma, LS Durkin, K Honscheid, C Li, TY Ling, KW McLean, WN Murray, IH Park, TA Romanowski, R Seidlein, GA Blair, A Byrne, RJ Cashmore, AM Cooper-Sarkar, RCE Devenish, DM Gingrich, PM Hallam-Baker, N Harnew, T Khatri, KR Long, P Luffman, I McArthur, P Morawitz, J Nash, SJP Smith, NC Roocroft, FF Wilson, G Abbiendi, R Brugnera, R Carlin, F Dal Corso, M De Giorgi, U Dosselli, F Gasparini, S Limentani, M Morandin, M Posocco, L Stanco, R Stroili, C Voci, JM Butterworth, J Bulmahn, G Feild, BY Oh, J Whitmore, U Contino, G D'Agostini, M Guida, M Iori, SM Mari, G Marini, M Mattioli, A Nigro, JC Hart, NA McCubbin, K Prytz, TP Shah, TL Short, E Barberis, N Cartiglia, C Heusch, B Hubbard, J Leslie, W Lockman, K O'Shaughnessy, HF Sadrozinski, A Seiden, D Zer-Zion, E Badura, J Biltzinger, RJ Seifert, AH Walenta, G Zech, S Dagan, A Levy, T Hasegawa, M Hazumi, T Ishii, S Kasai, M Kuze, S Mine, Y Nagasawa, T Nagira, M Nakao, H Okuno, I Suzuki, K Tokushuku, S Yamada, Y Yamazaki, M Chiba, R Hamatsu, T Hirose, S Kitamura, S Nagayama, Y Nakamitsu, R Cirio, M Costa, MI Ferrero, L Lamberti, S Maselli, C Peroni, A Solano, A Staiano, M Dardo, DC Bailey, D Bandyopadhyay, F Bernard, S Bhadra, M Brkic, BD Burow, FS Chlebana, MB Crombie, GF Hartner, GM Levman, JF Martin, RS Orr, JD Prentice, CR Sampson, GG Stairs, RJ Teuscher, T-S Yoon, FW Bullock, CD Catterall, JC Giddings, TW Jones, AM Khan, JB Lane, PL Makkar, D Shaw, J Shulman, K Blankenship, J Kochocki, B Lu, LW Mo, K Charchuła, J Ciborowski, J Gajewski, G Grzelak, M Kasprzak, M Krzyżanowski, K Muchorowski, RJ Nowak, JM Pawlak, A Stopczyński, T Tymieniecka, R Walczak, AK Wróblewski, JA Zakrzewski, AF Żarnecki, M Adamus, H Abramowicz, Y Eisenberg, C Glasman, U Karshon, A Montag, D Revel, A Shapira, C Foudas, C Fordham, RJ Loveless, A Goussiou, I Ali, B Behrens, S Dasu, DD Reeder, WH Smith, S Silverstein, WR Frisken, KM Furutani, Y Iga
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Hadronic energy distributions in deep-inelastic electron-proton scattering

Zeitschrift für Physik C Particles and Fields 59:2 (1993) 231-242

Authors:

M Derrick, D Krakauer, S Magill, B Musgrave, J Repond, S Repond, R Stanek, RL Talaga, J Thron, F Arzarello, 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, F Ciralli, A Contin, S D'Auria, C Del Papa, F Frasconi, P Giusti, G Iacobucci, G Laurenti, G Levi, Q Lin, B Lisowski, G Maccarrone, A Margotti, T Massam, F Nania, C Nemoz, F Palmonari, G Sartorelli, R Timellini, Y Zamora Garcia, A Zichichi, A Bargende, J Crittenden, H Dabbous, K Desch, B Diekmann, T Doeker, M Geerts, G Geitz, H Hartmann, D Haun, K Heinloth, E Hilger, HP Jakob, S Kramarczyk, M Kückes, A Mass, S Mengel, J Mollen, D Monaldi, H Müsch, E Paul, R Schattevoy, JL Schneider, D Schramm, R Wedemeyer, A Cassidy, DG Cussans, N Dyce, B Foster, R Gilmore, GP Heath, HF Heath, M Lancaster, TJ Llewellyn, J Malos, CJS Morgado, RJ Tapper, SS Wilson, R Yoshida, RR Rau, M Arneodo, T Barillari, M Schioppa, G Susinno, A Bernstein, A Caldwell, I Gialas, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, J Chwastowski, A Dwurzźny, A Eskreys

Abstract:

This paper presents energy distributions of the hadronic system produced in neutral-current electron-proton deep-inelastic scattering at a centre of mass energy of 296 GeV. Comparison of the results with QCD Monte Carlo models shows that QCD radiation has a strong influence on the characteristics of the final state. The data are reasonably reproduced by the Lund model based on a matrix element calculation in first order of αs, followed by appropriate parton showers, as well as by the colour dipole model. The HERWIG parton shower model also gives a reasonable representation of the data. Neither the first order matrix elements alone nor the Lund parton shower model, without the matrix element calculation, reproduce the data. © 1993 Springer-Verlag.
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Observation of two-jet production in deep inelastic scattering at HERA

Physics Letters B 306:1-2 (1993) 158-172

Authors:

M Derrick, D Krakauer, S Magill, B Musgrave, J Repond, S Repond, R Stanek, RL Talaga, J Thron, F Arzarello, 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, F Ciralli, A Contin, S D'Auria, C Del Papa, F Frasconi, P Giusti, G Iacobucci, G Laurenti, G Levi, Q Lin, B Lisowski, G Maccarrone, A Margotti, T Massam, R Nania, C Nemoz, F Palmonari, G Sartorelli, R Timellini, Y Zamora Garcia, A Zichichi, A Bargende, J Crittenden, H Dabbous, K Desch, B Diekmann, T Doeker, M Geerts, G Geitz, B Gutjahr, H Hartmann, D Haun, K Heinloth, E Hilger, HP Jakob, S Kramarczyk, M Kückes, A Mass, S Mengel, J Mollen, D Monaldi, H Müsch, E Paul, R Schattevoy, JL Schneider, R Wedemeyer, A Cassidy, DG Cussans, N Dyce, HF Fawcett, B Foster, R Gilmore, GP Heath, M Lancaster, TJ Llewellyn, J Malos, CJS Morgado, RJ Tapper, SS Wilson, RR Rau, M Arneodo, T Barillari, M Schioppa, G Susinno, A Bernstein, A Caldwell, I Gialas, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, J Chwastowski, A Dwuraźny, A Eskreys, Z Jakubowski

Abstract:

A sample of events with two distinct jets, in addition to the proton remnant, has been identified in deep inelastic, neutral current ep interactions recorded at HERA by the ZEUS experiment. For these events, the mass of the hadronic system ranges from 40 to 260 GeV. The salient features of the observed jet production agree with the predictions of higher order QCD. © 1993.
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