Accelerator Neutrinos

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Upper limit on the lifetime difference of short- and long-lived Bs0 mesons

PHYSICS LETTERS B 438:3-4 (1998) 417-429

Authors:

M Acciarri, O Adriani, M Aguilar-Benitez, S Ahlen, J Alcaraz, G Alemanni, J Allaby, A Aloisio, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, F Anselmo, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, S Banerjee, K Banicz, A Barczyk, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, J Berdugo, P Berges, B Bertucci, BL Betev, S Bhattacharya, M Biasini, A Biland, GM Bilei, JJ Blaising, SC Blyth, GJ Bobbink, R Bock, A Bohm, L Boldizsar, B Borgia, D Bourilkov, M Bourquin, D Boutigny, S Braccini, JG Branson, V Brigljevic, IC Brock, A Buffini, A Buijs, JD Burger, WJ Burger, J Busenitz, XD Cai, M Campanelli, M Capell, GC Romeo, G Carlino, AM Cartacci, J Casaus, G Castellini, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, YH Chang, UK Chaturvedi, M Chemarin, A Chen, G Chen, GM Chen, HF Chen, HS Chen, M Chen, G Chiefari, CY Chien, L Cifarelli, F Cindolo, G Civinini, I Clare, R Clare, G Coignet, AP Colijn, N Colino, S Costantini, F Cotorobai, B de la Cruz, A Csilling, TS Dai, R D'Alessandro, R de Asmundis, A Degre, K Deiters, P Denes, F DeNotaristefani, M Diemoz, D van Dierendonck, F Di Lodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, MT Dova, E Drago, D Duchesneau, P Duinker, I Duran, S Easo, H El Mamouni, A Engler, FJ Eppling, FC Erne, P Extermann, M Fabre, R Faccini, MA Falagan, S Falciano, A Favara, J Fay, O Fedin, M Felcini, T Ferguson, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, I Fisk, G Forconi, L Fredj, K Freudenreich, C Furetta, Y Galaktionov, SN Ganguli, P Garcia-Abia, M Gataullin, SS Gau, S Gentile, J Gerald, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZF Gong, A Gougas, G Gratta, MW Gruenewald, R van Gulik, VK Gupta, A Gurtu, LJ Gutay, D Haas, B Hartmann, A Hasan, D Hatzifotiadou, T Hebbeker, A Herve, P Hidas, J Hirschfelder, WC van Hoek, H Hofer, H Hoorani, SR Hou, G Hu, I Iashvili, BN Jin, LW Jones, P de Jong, I Josa-Mutuberria, A Kasser, RA Khan, D Kamrad, JS Kapustinsky, Y Karyotakis, M Kaur, MN Kienzle-Focacci, D Kim, DH Kim, JK Kim, SC Kim, WW Kinnison, A Kirkby, D Kirkby, J Kirkby, D Kiss, W Kittel, A Klimentov, AC Konig, A Kopp, I Korolko, V Koutsenko, RW Kraemer, W Krenz, A Kunin, P Lacentre, PL de Guevara, G Landi, C Lapoint, K Lassila-Perini, P Laurikainen, A Lavorato, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P Lecoq, P Le Coultre, HJ Lee, C Leggett, JM Le Goff, R Leiste, E Leonardi, P Levtchenko, C Li, CH Lin, WT Lin, FL Linde, L Lista, ZA Liu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Luminari, W Lustermann, WG Ma, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, D Mangeol, P Marchesini, G Marian, A Marin, JP Martin, F Marzano, GGG Massaro, K Mazumdar, S Mele, L Merola, M Meschini, WJ Metzger, M von der Mey, Y Mi, D Migani, A Mihul, AJW van Mil, H Milcent, G Mirabelli, J Mnich, P Molnar, B Monteleoni, R Moore, T Moulik, R Mount, GS Muanza, F Muheim, AJM Muijs, S Nahn, M Napolitano, F Nessi-Tedaldi, H Newman, T Niessen, A Nippe, A Nisati, H Nowak, YD Oh, G Organtini, R Ostonen, C Palomares, D Pandoulas, S Paoletti, P Paolucci, HK Park, IH Park, G Pascale, G Passaleva, S Patricelli, T Paul, M Pauluzzi, C Paus, F Pauss, D Peach, M Pedace, YJ Pei, S Pensotti, D Perret-Gallix, B Petersen, S Petrak, A Pevsner, D Piccolo, M Pieri, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, J Pothier, N Produit, D Prokofiev, J Quartieri, G Rahal-Callot, N Raja, PG Rancoita, M Rattaggi, G Raven, P Razis, D Ren, M Rescigno, S Reucroft, T van Rhee, S Riemann, K Riles, O Rind, A Robohm, J Rodin, BP Roe, L Romero, S Rosier-Lees, P Rosselet, S Roth, JA Rubio, D Ruschmeier, H Rykaczewski, S Sakar, J Salicio, E Sanchez, MP Sanders, ME Sarakinos, G Sauvage, C Schafer, V Schegelsky, S Schmidt-Kaerst, D Schmitz, M Schneegans, N Scholz, H Schopper, DJ Schotanus, J Schwenke, G Schwering, C Sciacca, D Sciarrino, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, A Shvorob, T Siedenburg, D Son, V Soulimov, B Smith, P Spillantini, M Steuer, DP Stickland, H Stone, B Stoyanov, A Straessner, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Tauscher, L Taylor, C Timmermans, SCC Ting, SM Ting, SC Tonwar, J Toth, C Tully, KL Tung, Y Uchida, J Ulbricht, E Valente, G Vesztergombi, I Vetlitsky, G Viertel, S Villa, M Vivargent, S Vlachos, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, A Vorvolakos, M Wadhwa, W Wallraff, JC Wang, XL Wang, ZM Wang, A Weber, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, HJ Yang, M Yang, JB Ye, SC Yeh, JM You, A Zalite, Y Zalite, P Zemp, Y Zeng, ZP Zhang, B Zhou, Y Zhou, GY Zhu, RY Zhu, A Zichichi, F Ziegler, G Zilizi
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Zγ production in p(p)over-bar collisions at √s=1.8 TeV and limits on anomalous ZZγ and Zγγ couplings

PHYSICAL REVIEW D 57:7 (1998) R3817-R3821

Authors:

B Abbott, M Abolins, BS Acharya, I Adam, DL Adams, M Adams, S Ahn, H Aihara, GA Alves, E Amidi, N Amos, EW Anderson, R Astur, MM Baarmand, A Baden, V Balamurali, J Balderston, B Baldin, S Banerjee, J Bantly, E Barberis, JF Bartlett, K Bazizi, A Belyaev, SB Beri, I Bertram, VA Bezzubov, PC Bhat, V Bhatnagar, M Bhattacharjee, N Biswas, G Blazey, S Blessing, P Bloom, A Boehnlein, NI Bojko, F Borcherding, C Boswell, A Brandt, R Brock, A Bross, D Buchholz, VS Burtovoi, JM Butler, W Carvalho, D Casey, Z Casilum, H Castilla-Valdez, D Chakraborty, SM Chang, SV Chekulaev, LP Chen, W Chen, S Choi, S Chopra, BC Choudhary, JH Christenson, M Chung, D Claes, AR Clark, WG Cobau, J Cochran, WE Cooper, C Cretsinger, D Cullen-Vidal, MAC Cummings, D Cutts, OI Dahl, K Davis, K De, K Del Signore, M Demarteau, D Denisov, SP Denisov, HT Diehl, H Diesburg, G Di Loreto, P Draper, Y Ducros, LV Dudko, SR Dugad, D Edmunds, J Ellison, VD Elvira, R Engelmann, S Eno, G Eppley, P Ermolov, OV Eroshin, VN Evdokimov, T Fahland, M Fatyga, MK Fatyga, S Feher, D Fein, T Ferbel, G Finocchiaro, HE Fisk, Y Fisyak, E Flattum, GE Forden, M Fortner, KC Frame, S Fuess, E Gallas, AN Galyaev, P Gartung, TL Geld, RJ Genik, K Genser, CE Gerber, B Gibbard, S Glenn, B Gobbi, M Goforth, A Goldschmidt, B Gomez, G Gomez, PI Goncharov, JLG Solis, H Gordon, LT Goss, K Gounder, A Goussiou, N Graf, PD Grannis, DR Green, J Green, H Greenlee, G Grim, S Grinstein, N Grossman, P Grudberg, S Grunendahl, G Guglielmo, JA Guida, JM Guida, A Gupta, SN Gurzhiev, P Gutierrez, YE Gutnikov, NJ Hadley, H Haggerty, S Hagopian, V Hagopian, KS Hahn, RE Hall, P Hanlet, S Hansen, JM Hauptman, D Hedin, AP Heinson, U Heintz, R Hernandez-Montoya, T Heuring, R Hirosky, JD Hobbs, B Hoeneisen, JS Hoftun, F Hsieh, T Hu, T Hu, T Huehn, AS Ito, E James, J Jaques, SA Jerger, R Jesik, JZY Jiang, T Joffe-Minor, K Johns, M Johnson, A Jonckheere, M Jones, H Jostlein, SY Jun, CK Jung, S Kahn, G Kalbfleisch, JS Kang, D Karmgard, R Kehoe, ML Kelly, CL Kim, SK Kim, A Klatchko, B Klima, C Klopfenstein, VI Klyukhin, VI Kochetkov, JM Kohli, D Koltick, AV Kostritskiy, J Kotcher, AV Kotwal, J Kourlas, AV Kozelov, EA Kozlovski, J Krane, MR Krishnaswamy, S Krzywdzinski, S Kunori, S Lami, H Lan, R Lander, F Landry, G Landsberg, B Lauer, A Leflat, H Li, J Li, QZ Li-Demarteau, JGR Lima, D Lincoln, SL Linn, J Linnemann, R Lipton, YC Liu, F Lobkowicz, SC Loken, S Lokos, L Lueking, AL Lyon, AKA Maciel, RJ Madaras, R Madden, L Magana-Mendoza, S Mani, HS Mao, R Markeloff, T Marshall, MI Martin, KM Mauritz, B May, AA Mayorov, R McCarthy, J McDonald, T McKibben, J McKinley, T McMahon, HL Melanson, M Merkin, KW Merritt, H Miettinen, A Mincer, CS Mishra, N Mokhov, NK Mondal, HE Montgomery, P Mooney, H da Motta, C Murphy, F Nang, M Narain, VS Narasimham, A Narayanan, HA Neal, JP Negret, P Nemethy, D Norman, L Oesch, V Oguri, E Oltman, N Oshima, D Owen, P Padley, M Pang, A Para, YM Park, R Partridge, N Parua, M Paterno, B Pawlik, J Perkins, M Peters, R Piegaia, H Piekarz, Y Pischalnikov, VM Podstavkov, BG Pope, HB Prosper, S Protopopescu, J Qian, PZ Quintas, R Raja, S Rajagopalan, O Ramirez, L Rasmussen, S Reucroft, M Rijssenbeek, T Rockwell, NA Roe, P Rubinov, R Ruchti, J Rutherfoord, A Sanchez-Hernandez, A Santoro, L Sawyer, RD Schamberger, H Schellman, J Sculli, E Shabalina, C Schaffer, HC Shankar, RK Shivpuri, M Shupe, H Singh, JB Singh, V Sirotenko, W Smart, RP Smith, R Snihur, GR Snow, J Snow, S Snyder, J Solomon, PM Sood, M Sosebee, N Sotnikova, M Souza, AL Spadafora, RW Stephens, ML Stevenson, D Stewart, F Stichelbaut, DA Stoianova, D Stoker, M Strauss, K Streets, M Strovink, A Sznajder, P Tamburello, J Tarazi, M Tartaglia, TLT Thomas, J Thompson, TG Trippe, PM Tuts, N Varelas, EW Varnes, D Vititoe, AA Volkov, AP Vorobiev, HD Wahl, G Wang, J Warchol, G Watts, M Wayne, H Weerts, A White, JT White, JA Wightman, S Willis, SJ Wimpenny, JVD Wirjawan, J Womersley, E Won, DR Wood, H Xu, R Yamada, P Yamin, J Yang, T Yasuda, P Yepes, C Yoshikawa, S Youssef, J Yu, Y Yu, ZH Zhu, D Zieminska, A Zieminski, EG Zverev, A Zylberstejn
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Measurement of double parton scattering in p̄ p collisions at √s = 1.8 TeV

Physical Review Letters 79:4 (1997) 584-589

Authors:

F Abe, H Akimoto, A Akopian, MG Albrow, SR Amendolia, D Amidei, J Antos, 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, M Barone, 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, MT 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

Abstract:

A strong signal for double parton scattering (DP) is observed in a 16 pb-1 sample of p̄ p → γ + 3 jets + X data from the CDF experiment at the Fermilab Tevatron. The process-independent DP parameter, σeff, is obtained without reference to theoretical calculations by comparing observed DP events to events with hard scatterings at separate p̄ p collisions. The result, σeff = (14.5 ± 1.7-2.3+1.7) mb, represents a significant improvement over previous measurements. For the first time, the Feynman x dependence of the σeff parameter is investigated, and no dependence is seen.
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Search for third generation leptoquarks in p̄ p collisions at √s = 1.8 TeV

Physical Review Letters 78:15 (1997) 2906-2911

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, M Barone, 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, MT 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

Abstract:

We present the results of a search for third generation leptoquark (LQ) pairs in 110 ± 8 pb-1 of pp collisions at √s = 1.8 TeV recorded by the Collider Detector at Fermilab. We assume third generation leptoquarks decay to a τ lepton and a b quark with branching ratio β. We observe one candidate event, consistent with standard model background expectations. We place upper limits on σ(p̄p → LQLQ) · β2 as a function of the leptoquark mass MLQ. We exclude at 95% confidence level scalar leptoquarks with MLQ < 99 GeV/c2, gauge vector leptoquarks with MLQ < 225 GeV/c2, and nongauge vector leptoquarks with MLQ < 170 GeV/c2 for β= 1.
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Color coherent radiation in multijet events from pp- collisions at √s = 1.8 TeV

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 414:3-4 (1997) 419-427

Authors:

B Abbott, M Abolins, BS Acharya, I Adam, DL Adams, M Adams, S Ahn, H Aihara, GA Alves, E Amidi, N Amos, EW Anderson, R Astur, MM Baarmand, A Baden, V Balamurali, J Balderston, B Baldin, S Banerjee, J Bantly, JF Bartlett, K Bazizi, A Belyaev, SB Beri, I Bertram, VA Bezzubov, PC Bhat, V Bhatnagar, M Bhattacharjee, N Biswas, G Blazey, S Blessing, P Bloom, A Boehnlein, NI Bojko, F Borcherding, C Boswell, A Brandt, R Brock, A Bross, D Buchholz, VS Burtovoi, JM Butler, W Carvalho, D Casey, Z Casilum, H Castilla-Valdez, D Chakraborty, SM Chang, SV Chekulaev, LP Chen, W Chen, S Choi, S Chopra, BC Choudhary, JH Christenson, M Chung, D Claes, AR Clark, WG Cobau, J Cochran, WE Cooper, C Cretsinger, D Cullen-Vidal, MAC Cummings, D Cutts, OI Dahl, K Davis, K De, K Del Signore, M Demarteau, D Denisov, SP Denisov, HT Diehl, M Diesburg, G di Loreto, P Draper, Y Ducros, LV Dudko, SR Dugad, D Edmunds, J Ellison, VD Elvira, R Engelmann, S Eno, G Eppley, P Ermolov, OV Eroshin, VN Evdokimov, T Fahland, M Fatyga, MK Fatyga, S Feher, D Fein, T Ferbel, G Finocchiaro, HE Fisk, Y Fisyak, E Flattum, GE Forden

Abstract:

We report on a study of color coherence effects in pp- collisions at a center of mass energy √s = 1.8 TeV. The data were collected with the DØ detector during the 1992-1993 run of the Fermilab Tevatron Collider. We observe the presence of initial-to-final state color interference with the spatial correlations between soft and hard jets in multijet events in the central and in forward pseudorapidity regions. The results are compared to Monte Carlo simulations with different color coherence implementations and to the predictions of script O sign(α3s) QCD calculations. © 1997 Elsevier Science B.V.
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