Search for Nonstandard Higgs Bosons Using High Mass Photon Pairs in pp¯→γγ+2 Jets at √s=1.8 TeV

Physical Review Letters American Physical Society (APS) 82:11 (1999) 2244-2249

Authors:

B Abbott, M Abolins, V Abramov, B Acharya, I Adam, D Adams, M Adams, S Ahn, G Alves, N Amos, E Anderson, M Baarmand, V Babintsev, L Babukhadia, A Baden, B Baldin, S Banerjee, J Bantly, E Barberis, P Baringer, J Bartlett, A Belyaev, S Beri, I Bertram, V Bezzubov, P Bhat, V Bhatnagar, M Bhattacharjee, N Biswas, G Blazey, S Blessing, P Bloom, A Boehnlein, N Bojko, F Borcherding, C Boswell, A Brandt, R Breedon, G Briskin, R Brock, A Bross, D Buchholz, V Burtovoi, J Butler, W Carvalho, D Casey, Z Casilum, H Castilla-Valdez, D Chakraborty, S Chekulaev, W Chen, S Choi, S Chopra, B Choudhary, J Christenson, M Chung, D Claes, A Clark, W Cobau, J Cochran, L Coney, W Cooper, D Coppage, C Cretsinger, D Cullen-Vidal, M Cummings, D Cutts, O Dahl, K Davis, K De, K Del Signore, M Demarteau, D Denisov, S Denisov, H Diehl, M Diesburg, G Di Loreto, P Draper, Y Ducros, L Dudko, S Dugad, A Dyshkant, D Edmunds, J Ellison, V Elvira, R Engelmann, S Eno, G Eppley, P Ermolov, O Eroshin, V Evdokimov, T Fahland, M Fatyga, S Feher, D Fein, T Ferbel, H Fisk, Y Fisyak, E Flattum, G Forden, M Fortner, K Frame, S Fuess, E Gallas, A Galyaev, P Gartung, V Gavrilov, T Geld, R Genik, K Genser, C Gerber, Y Gershtein, B Gibbard, B Gobbi, B Gómez, G Gómez, P Goncharov, J González Solís, H Gordon, L Goss, K Gounder, A Goussiou, N Graf, P Grannis, D Green, H Greenlee, S Grinstein, P Grudberg, S Grünendahl, G Guglielmo, J Guida, J Guida, A Gupta, S Gurzhiev, G Gutierrez, P Gutierrez, N Hadley, H Haggerty, S Hagopian, V Hagopian, K Hahn, R Hall, P Hanlet, S Hansen, J Hauptman, C Hebert, D Hedin, A Heinson, U Heintz, R Hernández-Montoya, T Heuring, R Hirosky, J Hobbs, B Hoeneisen, J Hoftun, F Hsieh, Tong Hu, A Ito, J Jaques, S Jerger, R Jesik, T Joffe-Minor, K Johns, M Johnson, A Jonckheere, M Jones, H Jöstlein, S Jun, C Jung, S Kahn, G Kalbfleisch, D Karmanov, D Karmgard, R Kehoe, S Kim, B Klima, C Klopfenstein, W Ko, J Kohli, D Koltick, A Kostritskiy, J Kotcher, A Kotwal, A Kozelov, E Kozlovsky, J Krane, M Krishnaswamy, S Krzywdzinski, S Kuleshov, Y Kulik, S Kunori, F Landry, G Landsberg, B Lauer, A Leflat, J Li, Q Li, J Lima, D Lincoln, S Linn, J Linnemann, R Lipton, F Lobkowicz, A Lucotte, L Lueking, A Lyon, A Maciel, R Madaras, R Madden, L Magaña-Mendoza, V Manankov, S Mani, H Mao, R Markeloff, T Marshall, M Martin, K Mauritz, B May, A Mayorov, R McCarthy, J McDonald, T McKibben, J McKinley, T McMahon, H Melanson, M Merkin, K Merritt, C Miao, H Miettinen, A Mincer, C Mishra, N Mokhov, N Mondal, H Montgomery, P Mooney, M Mostafa, H da Motta, C Murphy, F Nang, M Narain, V Narasimham, A Narayanan, H Neal, J Negret, P Nemethy, D Norman, L Oesch, V Oguri, N Oshima, D Owen, P Padley, A Para, N Parashar, Y Park, R Partridge, N Parua, M Paterno, B Pawlik, J Perkins, M Peters, R Piegaia, H Piekarz, Y Pischalnikov, B Pope, H Prosper, S Protopopescu, J Qian, P Quintas, R Raja, S Rajagopalan, O Ramirez, S Reucroft, M Rijssenbeek, T Rockwell, M Roco, P Rubinov, R Ruchti, J Rutherfoord, A Sánchez-Hernández, A Santoro, L Sawyer, R Schamberger, H Schellman, J Sculli, E Shabalina, C Shaffer, H Shankar, R Shivpuri, D Shpakov, M Shupe, H Singh, J Singh, V Sirotenko, E Smith, R Smith, R Snihur, G Snow, J Snow, S Snyder, J Solomon, M Sosebee, N Sotnikova, M Souza, G Steinbrück, R Stephens, M Stevenson, F Stichelbaut, D Stoker, V Stolin, D Stoyanova, M Strauss, K Streets, M Strovink, A Sznajder, P Tamburello, J Tarazi, M Tartaglia, T Thomas, J Thompson, T Trippe, P Tuts, V Vaniev, N Varelas, E Varnes, A Volkov, A Vorobiev, H Wahl, G Wang, J Warchol, G Watts, M Wayne, H Weerts, A White, J White, J Wightman, S Willis, S Wimpenny, J Wirjawan, J Womersley, E Won, D Wood, Z Wu, R Yamada, P Yamin, T Yasuda, P Yepes, K Yip, C Yoshikawa, S Youssef, J Yu, Y Yu, B Zhang, Z Zhou, Z Zhu, M Zielinski, D Zieminska, A Zieminski, E Zverev, A Zylberstejn

The CLEO-III Ring Imaging Cherenkov Detector

(1999)

Authors:

RJ Mountain, M Artuso, R Ayad, F Azfar, A Efimov, S Kopp, G Majumder, S Schuh, T Skwarnicki, S Stone, G Viehhauser, S Anderson, A Smith, Y Kubota, E Lipeles, T Coan, J Staeck, V Fadeyev, I Volobouev, J Ye

Measurement of the mass splittings between the bb¯χb,J(1P) states

Physical Review D American Physical Society (APS) 59:3 (1999) 032003

Authors:

KW Edwards, A Bellerive, R Janicek, DB MacFarlane, PM Patel, AJ Sadoff, R Ammar, P Baringer, A Bean, D Besson, D Coppage, C Darling, R Davis, S Kotov, I Kravchenko, N Kwak, L Zhou, S Anderson, Y Kubota, SJ Lee, JJ O’Neill, R Poling, T Riehle, A Smith, MS Alam, SB Athar, Z Ling, AH Mahmood, S Timm, F Wappler, A Anastassov, JE Duboscq, D Fujino, KK Gan, T Hart, K Honscheid, H Kagan, R Kass, J Lee, H Schwarthoff, MB Spencer, M Sung, A Undrus, A Wolf, MM Zoeller, SJ Richichi, H Severini, P Skubic, M Bishai, J Fast, JW Hinson, N Menon, DH Miller, EI Shibata, IPJ Shipsey, M Yurko, S Glenn, Y Kwon, AL Lyon, S Roberts, EH Thorndike, CP Jessop, K Lingel, H Marsiske, ML Perl, V Savinov, D Ugolini, X Zhou, TE Coan, V Fadeyev, I Korolkov, Y Maravin, I Narsky, V Shelkov, J Staeck, R Stroynowski, I Volobouev, J Ye, M Artuso, F Azfar, A Efimov, M Goldberg, D He, S Kopp, GC Moneti, R Mountain, S Schuh, T Skwarnicki, S Stone, G Viehhauser, JC Wang, X Xing, J Bartelt, SE Csorna, V Jain, KW McLean, S Marka, R Godang, K Kinoshita, IC Lai, P Pomianowski, S Schrenk, G Bonvicini, D Cinabro, R Greene, LP Perera, GJ Zhou, M Chadha, S Chan, G Eigen, JS Miller, M Schmidtler, J Urheim, AJ Weinstein, F Würthwein, DW Bliss, DE Jaffe, G Masek, HP Paar, S Prell, V Sharma, DM Asner, J Gronberg, TS Hill, DJ Lange, RJ Morrison, HN Nelson, TK Nelson, D Roberts, BH Behrens, WT Ford, A Gritsan, J Roy, JG Smith, JP Alexander, R Baker, C Bebek, BE Berger, K Berkelman, K Bloom, V Boisvert, DG Cassel, DS Crowcroft, M Dickson, S von Dombrowski, PS Drell, KM Ecklund, R Ehrlich, AD Foland, P Gaidarev, RS Galik, L Gibbons, B Gittelman, SW Gray, DL Hartill, BK Heltsley, PI Hopman, J Kandaswamy, DL Kreinick, T Lee, Y Liu, NB Mistry, CR Ng, E Nordberg, M Ogg, JR Patterson, D Peterson, D Riley, A Soffer, B Valant-Spaight, C Ward, M Athanas, P Avery, CD Jones, M Lohner, S Patton, C Prescott, J Yelton, J Zheng, G Brandenburg, RA Briere, A Ershov, YS Gao, DY-J Kim, R Wilson, H Yamamoto, TE Browder, Y Li, JL Rodriguez, T Bergfeld, BI Eisenstein, J Ernst, GE Gladding, GD Gollin, RM Hans, E Johnson, I Karliner, MA Marsh, M Palmer, M Selen, JJ Thaler

Space charge in ionization detectors and the NA48 electromagnetic calorimeter

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 421:1-2 (1999) 75-89

Authors:

S Palestini, GD Barr, C Biino, P Calafiura, A Ceccucci, C Cerri, JC Chollet, M Cirilli, J Cogan, F Costantini, S Crépé, D Cundy, R Fantechi, L Fayard, G Fischer, A Formica, PL Frabetti, W Funk, A Gianoli, S Giudici, A Gonidec, B Gorini, G Govi, L Iconomidou-Fayard, V Kekelidze, W Kubischta, S Luitz, I Mannelli, M Martini, I Mikulec, A Norton, J Ocariz, D Schinzel, M Sozzi, G Tatishvili, A Tkatchev, G Unal, M Velasco, O Vossnack, H Wahl

Abstract:

The subject of space charge due to positive ions slowly moving in parallel plate ionization chambers is considered. A model for the degradation of the detector response is developed, with particular emphasis on electromagnetic calorimeters .The topics discussed include: (a) the stationary; (b) the time dependent cases; (c) the limit of very large space charge; (d) the electric field dependence of the electron drift velocity; (e) the effect of longitudinal development of showers; (f ) the behaviour of the average reductions of response; and (g) the non-uniformity of response for different positions of the shower axis inside the cell defined by the electrodes. The NA48 calorimeter is used as application and for comparison of results. © 1999 Elsevier Science B.V. All rights reserved.

Evaluation of the LEP Centre-of-Mass Energy Above the W-Pair Production Threshold

ArXiv hep-ex/9901002 (1999)