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Search for scalar leptoquarks in the acoplanar jet topology in p over(p, ̄) collisions at sqrt(s) = 1.96   TeV

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 640:5-6 (2006) 230-237

Authors:

VM Abazov, B Abbott, M Abolins, BS Acharya, M Adams, T Adams, M Agelou, JL Agram, SH Ahn, M Ahsan, GD Alexeev, G Alkhazov, A Alton, G Alverson, GA Alves, M Anastasoaie, T Andeen, S Anderson, B Andrieu, MS Anzelc, Y Arnoud, M Arov, A Askew, B Åsman, ACS Assis Jesus, O Atramentov, C Autermann, C Avila, C Ay, F Badaud, A Baden, L Bagby, B Baldin, DV Bandurin, P Banerjee, S Banerjee, E Barberis, P Bargassa, P Baringer, C Barnes, J Barreto, JF Bartlett, U Bassler, D Bauer, A Bean, M Begalli, M Begel, C Belanger-Champagne, L Bellantoni, A Bellavance, JA Benitez, SB Beri, G Bernardi, R Bernhard, L Berntzon, I Bertram, M Besançon, R Beuselinck, VA Bezzubov, PC Bhat, V Bhatnagar, M Binder, C Biscarat, KM Black, I Blackler, G Blazey, F Blekman, S Blessing, D Bloch, K Bloom, U Blumenschein, A Boehnlein, O Boeriu, TA Bolton, G Borissov, K Bos, T Bose, A Brandt, R Brock, G Brooijmans, A Bross, D Brown, NJ Buchanan, D Buchholz, M Buehler, V Buescher, S Burdin, S Burke, TH Burnett, E Busato, CP Buszello, JM Butler, P Calfayan, S Calvet, J Cammin, S Caron, W Carvalho, BCK Casey, NM Cason, H Castilla-Valdez

Abstract:

A search for leptoquarks has been performed in 310 pb -1 of data from p over(p, ̄) collisions at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at the Fermilab Tevatron Collider. The topology analyzed consists of acoplanar jets with missing transverse energy. The data show good agreement with standard model expectations, and a lower mass limit of 136 GeV has been set at the 95% C.L. for a scalar leptoquark decaying exclusively into a quark and a neutrino. © 2006 Elsevier B.V. All rights reserved.
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Limits on anomalous trilinear gauge couplings from WW→e+e-, WW→e±e, and WW→μ+μ- events from pp̄ collisions at s=1.96TeV

Physical Review D Particles Fields Gravitation and Cosmology 74:5 (2006)

Authors:

VM Abazov, B Abbott, M Abolins, BS Acharya, M Adams, T Adams, M Agelou, SH Ahn, M Ahsan, GD Alexeev, G Alkhazov, A Alton, G Alverson, GA Alves, M Anastasoaie, T Andeen, S Anderson, B Andrieu, MS Anzelc, Y Arnoud, M Arov, A Askew, B Åsman, ACSA Jesus, O Atramentov, C Autermann, C Avila, C Ay, F Badaud, A Baden, L Bagby, B Baldin, DV Bandurin, P Banerjee, S Banerjee, E Barberis, P Bargassa, P Baringer, C Barnes, J Barreto, JF Bartlett, U Bassler, D Bauer, A Bean, M Begalli, M Begel, C Belanger-Champagne, L Bellantoni, A Bellavance, JA Benitez, SB Beri, G Bernardi, R Bernhard, L Berntzon, I Bertram, M Besançon, R Beuselinck, VA Bezzubov, PC Bhat, V Bhatnagar, M Binder, C Biscarat, KM Black, I Blackler, G Blazey, F Blekman, S Blessing, D Bloch, K Bloom, U Blumenschein, A Boehnlein, O Boeriu, TA Bolton, G Borissov, K Bos, T Bose, A Brandt, R Brock, G Brooijmans, A Bross, D Brown, NJ Buchanan, D Buchholz, M Buehler, V Buescher, S Burdin, S Burke, TH Burnett, E Busato, CP Buszello, JM Butler, P Calfayan, S Calvet, J Cammin, S Caron, W Carvalho, BCK Casey, NM Cason, H Castilla-Valdez, D Chakraborty

Abstract:

Limits are set on anomalous WWγ and WWZ trilinear gauge couplings using W+W-→e+νee-ν̄e, W+W-→e±νeμ νμ, and W+W-→μ+νμμ-ν̄μ events. The data set was collected by the Run II D0 detector at the Fermilab Tevatron Collider and corresponds to approximately 250pb-1 of integrated luminosity at s=1.96TeV. Under the assumption that the WWγ couplings are equal to the WWZ couplings and using a form factor scale of Λ=2.0TeV, the combined 95% C.L. one-dimensional coupling limits from all three channels are -0.32<Δκ<0.45 and -0.29<λ<0.30. © 2006 The American Physical Society.
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Search for resonant second generation slepton production at the Fermilab Tevatron.

Phys Rev Lett 97:11 (2006) 111801

Authors:

VM Abazov, B Abbott, M Abolins, BS Acharya, M Adams, T Adams, M Agelou, J-L Agram, SH Ahn, M Ahsan, GD Alexeev, G Alkhazov, A Alton, G Alverson, GA Alves, M Anastasoaie, T Andeen, S Anderson, B Andrieu, MS Anzelc, Y Arnoud, M Arov, A Askew, B Asman, ACS Assis Jesus, O Atramentov, C Autermann, C Avila, C Ay, F Badaud, A Baden, L Bagby, B Baldin, DV Bandurin, P Banerjee, S Banerjee, E Barberis, P Bargassa, P Baringer, C Barnes, J Barreto, JF Bartlett, U Bassler, D Bauer, A Bean, M Begalli, M Begel, C Belanger-Champagne, L Bellantoni, A Bellavance, JA Benitez, SB Beri, G Bernardi, R Bernhard, L Berntzon, I Bertram, M Besançon, R Beuselinck, VA Bezzubov, PC Bhat, V Bhatnagar, M Binder, C Biscarat, KM Black, I Blackler, G Blazey, F Blekman, S Blessing, D Bloch, K Bloom, U Blumenschein, A Boehnlein, O Boeriu, TA Bolton, F Borcherding, G Borissov, K Bos, T Bose, A Brandt, R Brock, G Brooijmans, A Bross, D Brown, NJ Buchanan, D Buchholz, M Buehler, V Buescher, S Burdin, S Burke, TH Burnett, E Busato, CP Buszello, JM Butler, P Calfayan, S Calvet, J Cammin, S Caron, W Carvalho, BCK Casey, NM Cason, H Castilla-Valdez, S Chakrabarti, D Chakraborty, KM Chan, A Chandra, D Chapin, F Charles, E Cheu, F Chevallier, DK Cho, S Choi, B Choudhary, L Christofek, D Claes, B Clément, C Clément, Y Coadou, M Cooke, WE Cooper, D Coppage, M Corcoran, M-C Cousinou, B Cox, S Crépé-Renaudin, D Cutts, M Cwiok, H da Motta, A Das, M Das, B Davies, G Davies, GA Davis, K De, P de Jong, SJ de Jong, E De La Cruz-Burelo, C De Oliveira Martins, JD Degenhardt, F Déliot, M Demarteau, R Demina, P Demine, D Denisov, SP Denisov, S Desai, HT Diehl, M Diesburg, M Doidge, A Dominguez, H Dong, LV Dudko, L Duflot, SR Dugad, A Duperrin, J Dyer, A Dyshkant, M Eads, D Edmunds, T Edwards, J Ellison, J Elmsheuser, VD Elvira, S Eno, P Ermolov, J Estrada, H Evans, A Evdokimov, VN Evdokimov, SN Fatakia, L Feligioni, AV Ferapontov, T Ferbel, F Fiedler, F Filthaut, W Fisher, HE Fisk, I Fleck, M Ford, M Fortner, H Fox, S Fu, S Fuess, T Gadfort, CF Galea, E Gallas, E Galyaev, C Garcia, A Garcia-Bellido, J Gardner, V Gavrilov, A Gay, P Gay, D Gelé, R Gelhaus, CE Gerber, Y Gershtein, D Gillberg, G Ginther, N Gollub, B Gómez, K Gounder, A Goussiou, PD Grannis, H Greenlee, ZD Greenwood, EM Gregores, G Grenier, Ph Gris, J-F Grivaz, S Grünendahl, MW Grünewald, F Guo, J Guo, G Gutierrez, P Gutierrez, A Haas, NJ Hadley, P Haefner, S Hagopian, J Haley, I Hall, RE Hall, L Han, K Hanagaki, K Harder, A Harel, R Harrington, JM Hauptman, R Hauser, J Hays, T Hebbeker, D Hedin, JG Hegeman, JM Heinmiller, AP Heinson, U Heintz, C Hensel, G Hesketh, MD Hildreth, R Hirosky, JD Hobbs, B Hoeneisen, H Hoeth, M Hohlfeld, SJ Hong, R Hooper, P Houben, Y Hu, Z Hubacek, V Hynek, I Iashvili, R Illingworth, AS Ito, S Jabeen, M Jaffré, S Jain, K Jakobs, C Jarvis, A Jenkins, R Jesik, K Johns, C Johnson, M Johnson, A Jonckheere, P Jonsson, A Juste, D Käfer, S Kahn, E Kajfasz, AM Kalinin, JM Kalk, JR Kalk, S Kappler, D Karmanov, J Kasper, P Kasper, I Katsanos, D Kau, R Kaur, R Kehoe, S Kermiche, S Kesisoglou, N Khalatyan, A Khanov, A Kharchilava, YM Kharzheev, D Khatidze, H Kim, TJ Kim, MH Kirby, B Klima, JM Kohli, J-P Konrath, M Kopal, VM Korablev, J Kotcher, B Kothari, A Koubarovsky, AV Kozelov, J Kozminski, A Kryemadhi, S Krzywdzinski, T Kuhl, A Kumar, S Kunori, A Kupco, T Kurca, J Kvita, S Lager, S Lammers, G Landsberg, J Lazoflores, A-C Le Bihan, P Lebrun, WM Lee, A Leflat, F Lehner, V Lesne, J Leveque, P Lewis, J Li, QZ Li, JGR Lima, D Lincoln, J Linnemann, VV Lipaev, R Lipton, Z Liu, L Lobo, A Lobodenko, M Lokajicek, A Lounis, P Love, HJ Lubatti, M Lynker, AL Lyon, AKA Maciel, RJ Madaras, P Mättig, C Magass, A Magerkurth, A-M Magnan, N Makovec, PK Mal, HB Malbouisson, S Malik, VL Malyshev, HS Mao, Y Maravin, M Martens, SEK Mattingly, R McCarthy, R McCroskey, D Meder, A Melnitchouk, A Mendes, L Mendoza, M Merkin, KW Merritt, A Meyer, J Meyer, M Michaut, H Miettinen, T Millet, J Mitrevski, J Molina, NK Mondal, J Monk, RW Moore, T Moulik, GS Muanza, M Mulders, M Mulhearn, L Mundim, YD Mutaf, E Nagy, M Naimuddin, M Narain, NA Naumann, HA Neal, JP Negret, S Nelson, P Neustroev, C Noeding, A Nomerotski, SF Novaes, T Nunnemann, V O'dell, DC O'neil, G Obrant, V Oguri, N Oliveira, N Oshima, R Otec, GJ Otero Y Garzón, M Owen, P Padley, N Parashar, S-J Park, SK Park, J Parsons, R Partridge, N Parua, A Patwa, G Pawloski, PM Perea, E Perez, K Peters, P Pétroff, M Petteni, R Piegaia, M-A Pleier, PLM Podesta-Lerma, VM Podstavkov, Y Pogorelov, M-E Pol, A Pompos, BG Pope, AV Popov, WL Prado da Silva, HB Prosper, S Protopopescu, J Qian, A Quadt, B Quinn, KJ Rani, K Ranjan, PA Rapidis, PN Ratoff, P Renkel, S Reucroft, M Rijssenbeek, I Ripp-Baudot, F Rizatdinova, S Robinson, RF Rodrigues, C Royon, P Rubinov, R Ruchti, VI Rud, G Sajot, A Sánchez-Hernández, MP Sanders, A Santoro, G Savage, L Sawyer, T Scanlon, D Schaile, RD Schamberger, Y Scheglov, H Schellman, P Schieferdecker, C Schmitt, C Schwanenberger, A Schwartzman, R Schwienhorst, S Sengupta, H Severini, E Shabalina, M Shamim, V Shary, AA Shchukin, WD Shephard, RK Shivpuri, D Shpakov, V Siccardi, RA Sidwell, V Simak, V Sirotenko, P Skubic, P Slattery, RP Smith, GR Snow, J Snow, S Snyder, S Söldner-Rembold, X Song, L Sonnenschein, A Sopczak, M Sosebee, K Soustruznik, M Souza, B Spurlock, J Stark, J Steele, K Stevenson, V Stolin, A Stone, DA Stoyanova, J Strandberg, MA Strang, M Strauss, R Ströhmer, D Strom, M Strovink, L Stutte, S Sumowidagdo, A Sznajder, M Talby, P Tamburello, W Taylor, P Telford, J Temple, B Tiller, M Titov, VV Tokmenin, M Tomoto, T Toole, I Torchiani, S Towers, T Trefzger, S Trincaz-Duvoid, D Tsybychev, B Tuchming, C Tully, AS Turcot, PM Tuts, R Unalan, L Uvarov, S Uvarov, S Uzunyan, B Vachon, PJ van den Berg, R Van Kooten, WM van Leeuwen, N Varelas, EW Varnes, A Vartapetian, IA Vasilyev, M Vaupel, P Verdier, LS Vertogradov, M Verzocchi, F Villeneuve-Seguier, P Vint, J-R Vlimant, E Von Toerne, M Voutilainen, M Vreeswijk, HD Wahl, L Wang, J Warchol, G Watts, M Wayne, M Weber, H Weerts, N Wermes, M Wetstein, A White, D Wicke, GW Wilson, SJ Wimpenny, M Wobisch, J Womersley, DR Wood, TR Wyatt, Y Xie, N Xuan, S Yacoob, R Yamada, M Yan, T Yasuda, YA Yatsunenko, K Yip, HD Yoo, SW Youn, C Yu, J Yu, A Yurkewicz, A Zatserklyaniy, C Zeitnitz, D Zhang, T Zhao, Z Zhao, B Zhou, J Zhu, M Zielinski, D Zieminska, A Zieminski, V Zutshi, EG Zverev, D0 Collaboration

Abstract:

We present a search for supersymmetry in the R-parity violating resonant production and decay of smuons and muon sneutrinos in the channels mu-->chi(1)(0)mu, mu-->chi(2,3,4)(0)mu, and nu(mu)-->chi(1,2)(+/-)mu. We analyzed 0.38 fb(-1) of integrated luminosity collected between April 2002 and August 2004 with the D0 detector at the Fermilab Tevatron Collider. The observed number of events is in agreement with the standard model expectation, and we calculate 95% C.L. limits on the slepton production cross section times branching fraction to gaugino plus muon, as a function of slepton and gaugino masses. In the framework of minimal supergravity, we set limits on the coupling parameter lambda(211)('), extending significantly previous results obtained in Run I of the Tevatron and at the CERN LEP collider.
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The upgraded DØ detector

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 565:2 (2006) 463-537

Authors:

VM Abazov, B Abbott, M Abolins, BS Acharya, DL Adams, M Adams, T Adams, M Agelou, JL Agram, SN Ahmed, SH Ahn, M Ahsan, GD Alexeev, G Alkhazov, A Alton, G Alverson, GA Alves, M Anastasoaie, T Andeen, JT Anderson, S Anderson, B Andrieu, R Angstadt, V Anosov, Y Arnoud, M Arov, A Askew, B Åsman, ACS Assis Jesus, O Atramentov, C Autermann, C Avila, L Babukhadia, TC Bacon, F Badaud, A Baden, S Baffioni, L Bagby, B Baldin, PW Balm, P Banerjee, S Banerjee, E Barberis, O Bardon, W Barg, P Bargassa, P Baringer, C Barnes, J Barreto, JF Bartlett, U Bassler, M Bhattacharjee, MA Baturitsky, D Bauer, A Bean, B Baumbaugh, S Beauceron, M Begalli, F Beaudette, M Begel, A Bellavance, SB Beri, G Bernardi, R Bernhard, I Bertram, M Besançon, A Besson, R Beuselinck, D Beutel, VA Bezzubov, PC Bhat, V Bhatnagar, M Binder, C Biscarat, A Bishoff, KM Black, I Blackler, G Blazey, F Blekman, S Blessing, D Bloch, U Blumenschein, E Bockenthien, V Bodyagin, A Boehnlein, O Boeriu, TA Bolton, P Bonamy, D Bonifas, F Borcherding, G Borissov, K Bos, T Bose, C Boswell, M Bowden, A Brandt, G Briskin, R Brock, G Brooijmans, A Bross

Abstract:

The DØ experiment enjoyed a very successful data-collection run at the Fermilab Tevatron collider between 1992 and 1996. Since then, the detector has been upgraded to take advantage of improvements to the Tevatron and to enhance its physics capabilities. We describe the new elements of the detector, including the silicon microstrip tracker, central fiber tracker, solenoidal magnet, preshower detectors, forward muon detector, and forward proton detector. The uranium/liquid-argon calorimeters and central muon detector, remaining from Run I, are discussed briefly. We also present the associated electronics, triggering, and data acquisition systems, along with the design and implementation of software specific to DØ. © 2006 Elsevier B.V. All rights reserved.
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Measurement of the Lambda_b Lifetime in Lambda_b --> J/psi Lambda0 in p-pbar Collisions at sqrt(s)=1.96 TeV

ArXiv hep-ex/0609021 (2006)

Authors:

CDF Collaboration, A Abulencia
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