Comparison of ZEUS Data with Standard Model Predictions for e^+ p -> e^+ X Scattering at High x and Q^2

ArXiv hep-ex/9702015 (1997)

Authors:

ZEUS Collaboration, Breitweg et al

Search for New Particles Decaying to Dijets at CDF

ArXiv hep-ex/9702004 (1997)

Observation of Λb0→J/ψ Λ at the Fermilab proton-antiproton collider

Physical Review D American Physical Society (APS) 55:3 (1997) 1142-1152

Authors:

F Abe, H Akimoto, A Akopian, MG Albrow, SR Amendolia, D Amidei, J Antos, C Anway-Wiese, S Aota, G Apollinari, T Asakawa, W Ashmanskas, M Atac, F Azfar, P Azzi-Bacchetta, N Bacchetta, W Badgett, S Bagdasarov, MW Bailey, J Bao, P de Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, E Barzi, 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, J Berryhill, S Bertolucci, B Bevensee, A Bhatti, K Biery, M Binkley, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, G Bolla, D Bortoletto, J Boudreau, L Breccia, C Bromberg, N Bruner, 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, D Cauz, Y Cen, F Cervelli, PS Chang, PT Chang, HY Chao, J Chapman, M-T Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, E Cocca, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, D Cronin-Hennessy, R Culbertson, T Daniels, F DeJongh, S Delchamps, S Dell'Agnello, M Dell'Orso, R Demina, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, JR Dittmann, S Donati, J Done, T Dorigo, A Dunn, N Eddy, K Einsweiler, JE Elias, R Ely, E Engels, D Errede, S Errede, Q Fan, C Ferretti, I Fiori, B Flaugher, GW Foster, M Franklin, M Frautschi, J Freeman, J Friedman, TA Fuess, Y Fukui, S Funaki, G Gagliardi, S Galeotti, M Gallinaro, M Garcia-Sciveres, AF Garfinkel, C Gay, S Geer, DW Gerdes, P Giannetti, N Giokaris, P Giromini, G Giusti, L Gladney, D Glenzinski, M Gold, J Gonzalez, A Gordon, AT Goshaw, K Goulianos, H Grassmann, L Groer, C Grosso-Pilcher, G Guillian, RS Guo, C Haber, E Hafen, SR Hahn, R Hamilton, R Handler, RM Hans, K Hara, AD Hardman, B Harral, RM Harris, SA Hauger, J Hauser, C Hawk, E Hayashi, J Heinrich, KD Hoffman, M Hohlmann, C Holck, R Hollebeek, L Holloway, A Hölscher, S Hong, G Houk, P Hu, BT Huffman, R Hughes, J Huston, J Huth, J Hylen, H Ikeda, M Incagli, J Incandela, G Introzzi, J Iwai, Y Iwata, H Jensen, U Joshi, RW Kadel, E Kajfasz, H Kambara, T Kamon, T Kaneko, K Karr, H Kasha, Y Kato, TA Keaffaber, L Keeble, K Kelley, RD Kennedy, R Kephart, P Kesten, D Kestenbaum, RM Keup, H Keutelian, F Keyvan, B Kharadia, BJ Kim, DH Kim, HS Kim, SB Kim, SH Kim, YK Kim, L Kirsch, P Koehn, K Kondo, J Konigsberg, S Kopp, K Kordas, A Korytov, W Koska, E Kovacs, W Kowald, M Krasberg, J Kroll, M Kruse, T Kuwabara, 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, O Long, C Loomis, M Loreti, J Lu, D Lucchesi, P Lukens, S Lusin, J Lys, 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, S Metzler, C Miao, T Miao, G Michail, R Miller, H Minato, S Miscetti, M Mishina, H Mitsushio, T Miyamoto, S Miyashita, N Moggi, Y Morita, J Mueller, A Mukherjee, T Muller, P Murat, H Nakada, I Nakano, C Nelson, D Neuberger, C Newman-Holmes, M Ninomiya, L Nodulman, SH Oh, KE Ohl, T Ohmoto, T Ohsugi, R Oishi, M Okabe, T Okusawa, R Oliveira, J Olsen, C Pagliarone, R Paoletti, V Papadimitriou, SP Pappas, S Park, A Parri, J Patrick, G Pauletta, M Paulini, A Perazzo, L Pescara, MD Peters, TJ Phillips, G Piacentino, M Pillai, KT Pitts, R Plunkett, L Pondrom, J Proudfoot, F Ptohos, G Punzi, K Ragan, D Reher, A Ribon, F Rimondi, L Ristori, WJ Robertson, T Rodrigo, S Rolli, J Romano, L Rosenson, R Roser, WK Sakumoto, D Saltzberg, A Sansoni, L Santi, H Sato, P Schlabach, EE Schmidt, MP Schmidt, A Scribano, S Segler, S Seidel, Y Seiya, G Sganos, MD Shapiro, NM Shaw, Q Shen, PF Shepard, M Shimojima, M Shochet, J Siegrist, A Sill, P Sinervo, P Singh, J Skarha, K Sliwa, FD Snider, T Song, J Spalding, T Speer, P Sphicas, F Spinella, M Spiropulu, L Spiegel, L Stanco, J Steele, A Stefanini, K Strahl, J Strait, R Ströhmer, D Stuart, G Sullivan, A Soumarokov, K Sumorok, J Suzuki, T Takada, T Takahashi, T Takano, K Takikawa, N Tamura, F Tartarelli, W Taylor, PK Teng, Y Teramoto, S Tether, D Theriot, TL Thomas, R Thun, M Timko, P Tipton, A Titov, S Tkaczyk, D Toback, K Tollefson, A Tollestrup, JF de Troconiz, S Truitt, J Tseng, N Turini, T Uchida, N Uemura, F Ukegawa, G Unal, J Valls, SC van den Brink, S Vejcik, G Velev, R Vidal, M Vondracek, D Vucinic, RG Wagner, RL Wagner, J Wahl, N Wallace, C Wang, CH Wang, J Wang, MJ Wang, QF Wang, A Warburton, T Watts, R Webb, C Wei, C Wendt, H Wenzel, WC Wester, AB Wicklund, E Wicklund, R Wilkinson, HH Williams, P Wilson, BL Winer, D Winn, D Wolinski, J Wolinski, S Worm, X Wu, J Wyss, A Yagil, W Yao, K Yasuoka, Y Ye, GP Yeh, P Yeh, M Yin, J Yoh, C Yosef, T Yoshida, D Yovanovitch, I Yu, L Yu, JC Yun, A Zanetti, F Zetti, L Zhang, W Zhang, S Zucchelli

The CDF SVX-II upgrade for the Tevatron run II

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 386:1 (1997) 87-95

Authors:

Daniela Bortoletto, CDF Collaboration

A measurement of the energy loss spectrum of 150 GeV muons in iron

Zeitschrift Fur Physik C Particles and Fields 73:3 (1997) 455-463

Authors:

E Berger, R Blair, J Dawson, T Fuess, V Guarino, N Hill, S Magill, E May, L Nodulman, L Price, J Proudfoot, R Stanek, D Underwood, R Wagner, B Wicklund, G Blanchot, M Bosman, P Casado, M Cavalli-Sforza, I Efthymiopoulos, Y Ivanyushenkov, A Juste, L Miralles, S Orteu, C Padilla, JA Perlas, I Riu, B Ronceux, F Teubert, R Arsenescu, S Constantinescu, C Blaj, V Boldea, S Dita, M Cobal, O Gildemeister, M Nessi, A Henriques, L Poggioli, P Sonderegger, G Karapetian, K Anderson, E Blucher, H Evans, F Merritt, J Pilcher, H Sanders, M Shochet, F Tang, A Turcot, D Wagner, Z Ajaltouni, F Badaud, N Bouhemaid, P Brette, M Brassard, R Chadelas, JC Chevaleyre, M Crouau, F Daudon, JJ Dugne, B Michel, G Montarou, GS Muanza, D Pallin, H Plothow-Besch, S Poirot, G Reinmuth, LP Says, F Vazeille, A Astvatsaturov, O Borisov, J Budagov, I Chirikov-Zorin, G Chlachidze, V Glagolev, S Kakurin, V Kolomoets, V Kovtun, V Kukhtin, A Lebedev, I Liba, O Lomakina, Y Lomakin, S Malyukov, I Minashvili, D Pantea, O Pukhov, V Romanov, N Russakovich, V Senchishin, A Semenov, A Sissakian, A Shchelchkov, V Shevtsov, S Studenov, S Tokar, N Topilin, V Vinogradov, S Vorozhtsov

Abstract:

The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS. The differential probability dP/dυ per radiation length of a fractional energy loss υ = ΔEμ/Eμ has been measured in the range υ = 0.01 ÷ 0.95; it is compared with the theoretical predictions for energy losses due to bremsstrahlung and production of electron-positron pairs or of energetic knock-on electrons. The integrated probability ∫0.010.95(dP/dυ)dυ is (1.610 ± 0.015stat ±0 .105syst)·10-3 in agreement with the theoretical predictions 1.556·10-3 and 1.619·10-3. Agreement with theory is also found in two intervals of υ where production of electron-positron pairs and knock-on electrons dominates. In the region of bremsstrahlung dominance (υ = 0.12 ÷ 0.95) the measured integrated probability (1.160 ± 0.040stat ± 0.075syst)·10-4 is in agreement with the theoretical value of 1.185·10-4, obtained using the Petrukhin and Shestakov description of the bremsstrahlung process. The same result is about 3.6 standard deviations (defined as the quadratic sum of statistical and systematic errors) lower than the theoretical prediction of 1.472·10-4, obtained using Tsai's description of bremsstrahlung. © Springer-Verlag 1997.