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Search for high-mass resonances decaying into ZZ in p$\bar{p}$ collisions at $\sqrt{s}=1.96$\,TeV

ArXiv 1111.3432 (2011)

Authors:

CDF Collaboration, T Aaltonen, B Alvarez Gonzalez, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, JA Appel, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, B Auerbach, A Aurisano, F Azfar, W Badgett, T Bae, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Barria, P Bartos, M Bauce, F Bedeschi, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, D Bisello, I Bizjak, KR Bland, B Blumenfeld, A Bocci, A Bodek, D Bortoletto, J Boudreau, A Boveia, L Brigliadori, C Bromberg, E Brucken, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, A Buzatu, A Calamba, C Calancha, S Camarda, M Campanelli, M Campbell, F Canelli, B Carls, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, WH Chung, YS Chung, MA Ciocci, A Clark, C Clarke, G Compostella, ME Convery, J Conway, M Corbo, M Cordelli, CA Cox, DJ Cox, F Crescioli, J Cuevas, R Culbertson, D Dagenhart, N d'Ascenzo, M Datta, P de Barbaro, M Dell'Orso, L Demortier, M Deninno, F Devoto, M d'Errico, A Di Canto, B Di Ruzza, JR Dittmann, M D'Onofrio, S Donati, P Dong, M Dorigo, T Dorigo, K Ebina, A Elagin, A Eppig, R Erbacher, S Errede, N Ershaidat, R Eusebi, S Farrington, M Feindt, JP Fernandez, R Field, G Flanagan, R Forrest, MJ Frank, M Franklin, JC Freeman, Y Funakoshi, I Furic, M Gallinaro, JE Garcia, AF Garfinkel, P Garosi, H Gerberich, E Gerchtein, S Giagu, V Giakoumopoulou, P Giannetti, K Gibson, CM Ginsburg, N Giokaris, P Giromini, G Giurgiu, V Glagolev, D Glenzinski, M Gold, D Goldin, N Goldschmidt, A Golossanov, G Gomez, G Gomez-Ceballos, M Goncharov, O González, I Gorelov, AT Goshaw, K Goulianos, S Grinstein, C Grosso-Pilcher, RC Group, J Guimaraes da Costa, SR Hahn, E Halkiadakis, A Hamaguchi, JY Han, F Happacher, K Hara, D Hare, M Hare, RF Harr, K Hatakeyama, C Hays, M Heck, J Heinrich, M Herndon, S Hewamanage, A Hocker, W Hopkins, D Horn, S Hou, RE Hughes, M Hurwitz, U Husemann, N Hussain, M Hussein, J Huston, G Introzzi, M Iori, A Ivanov, E James, D Jang, B Jayatilaka, EJ Jeon, S Jindariani, M Jones, KK Joo, SY Jun, TR Junk, T Kamon, PE Karchin, A Kasmi, Y Kato, W Ketchum, J Keung, V Khotilovich, B Kilminster, DH Kim, HS Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kim, YJ Kim, N Kimura, M Kirby, S Klimenko, K Knoepfel, K Kondo, DJ Kong, J Konigsberg, AV Kotwal, M Kreps, J Kroll, D Krop, M Kruse, V Krutelyov, T Kuhr, M Kurata, S Kwang, AT Laasanen, S Lami, S Lammel, M Lancaster, RL Lander, K Lannon, A Lath, G Latino, T LeCompte, E Lee, HS Lee, JS Lee, SW Lee, S Leo, S Leone, JD Lewis, A Limosani, C-J Lin, M Lindgren, E Lipeles, A Lister, DO Litvintsev, C Liu, H Liu, Q Liu, T Liu, S Lockwitz, A Loginov, D Lucchesi, J Lueck, P Lujan, P Lukens, G Lungu, J Lys, R Lysak, R Madrak, K Maeshima, P Maestro, S Malik, G Manca, A Manousakis-Katsikakis, F Margaroli, C Marino, M Martinez, P Mastrandrea, K Matera, ME Mattson, A Mazzacane, P Mazzanti, KS McFarland, P McIntyre, R McNulty, A Mehta, P Mehtala, C Mesropian, T Miao, D Mietlicki, A Mitra, H Miyake, S Moed, N Moggi, MN Mondragon, CS Moon, R Moore, MJ Morello, J Morlock, P Movilla Fernandez, A Mukherjee, Th Muller, P Murat, M Mussini, J Nachtman, Y Nagai, J Naganoma, I Nakano, A Napier, J Nett, C Neu, MS Neubauer, J Nielsen, L Nodulman, SY Noh, O Norniella, L Oakes, SH Oh, YD Oh, I Oksuzian, T Okusawa, R Orava, L Ortolan, S Pagan Griso, C Pagliarone, E Palencia, V Papadimitriou, AA Paramonov, J Patrick, G Pauletta, M Paulini, C Paus, DE Pellett, A Penzo, TJ Phillips, G Piacentino, E Pianori, J Pilot, K Pitts, C Plager, L Pondrom, S Poprocki, K Potamianos, F Prokoshin, A Pranko, F Ptohos, G Punzi, A Rahaman, V Ramakrishnan, N Ranjan, I Redondo, P Renton, M Rescigno, T Riddick, F Rimondi, L Ristori, A Robson, T Rodrigo, T Rodriguez, E Rogers, S Rolli, R Roser, F Ruffini, A Ruiz, J Russ, V Rusu, A Safonov, WK Sakumoto, Y Sakurai, L Santi, K Sato, V Saveliev, A Savoy-Navarro, P Schlabach, A Schmidt, EE Schmidt, T Schwarz, L Scodellaro, A Scribano, F Scuri, S Seidel, Y Seiya, A Semenov, F Sforza, SZ Shalhout, T Shears, PF Shepard, M Shimojima, M Shochet, I Shreyber-Tecker, A Simonenko, P Sinervo, K Sliwa, JR Smith, FD Snider, A Soha, V Sorin, H Song, P Squillacioti, M Stancari, R St Denis, B Stelzer, O Stelzer-Chilton, D Stentz, J Strologas, GL Strycker, Y Sudo, A Sukhanov, I Suslov, K Takemasa, Y Takeuchi, J Tang, M Tecchio, PK Teng, J Thom, J Thome, GA Thompson, E Thomson, D Toback, S Tokar, K Tollefson, T Tomura, D Tonelli, S Torre, D Torretta, P Totaro, M Trovato, F Ukegawa, S Uozumi, A Varganov, F Vazquez, G Velev, C Vellidis, M Vidal, I Vila, R Vilar, J Vizan, M Vogel, G Volpi, P Wagner, RL Wagner, T Wakisaka, R Wallny, SM Wang, A Warburton, D Waters, WC Wester III, D Whiteson, AB Wicklund, E Wicklund, S Wilbur, F Wick, HH Williams, JS Wilson, P Wilson, BL Winer, P Wittich, S Wolbers, H Wolfe, T Wright, X Wu, Z Wu, K Yamamoto, D Yamato, T Yang, UK Yang, YC Yang, W-M Yao, GP Yeh, K Yi, J Yoh, K Yorita, T Yoshida, GB Yu, I Yu, SS Yu, JC Yun, A Zanetti, Y Zeng, C Zhou, S Zucchelli

Abstract:

We search for high-mass resonances decaying into Z boson pairs using data corresponding to 6 fb^-1 collected by the CDF experiment in p\bar{p} collisions at sqrt{s}=1.96 TeV. The search is performed in three distinct final states: ZZ --> l^+l^-l^+l^-, ZZ --> l^+l^-\nu\nu, and ZZ --> l^+l^-jj. For a Randall-Sundrum graviton G*, the 95% CL upper limits on the production cross section times branching ratio to ZZ, sigma(p\bar{p} --> G^* --> ZZ), vary between 0.26 pb and 0.045 pb in the mass range 300 < M_{G*} < 1000 GeV/c^2.
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Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector

(2011)

Authors:

K Abe, N Abgrall, Y Ajima, H Aihara, JB Albert, C Andreopoulos, B Andrieu, MD Anerella, S Aoki, O Araoka, J Argyriades, A Ariga, T Ariga, S Assylbekov, D Autiero, A Badertscher, M Barbi, GJ Barker, G Barr, M Bass, M Batkiewicz, F Bay, S Bentham, V Berardi, BE Berger, I Bertram, M Besnier, J Beucher, D Beznosko, S Bhadra, FDM Blaszczyk, J Blocki, A Blondel, C Bojechko, J Bouchez, SB Boyd, A Bravar, C Bronner, DG Brook-Roberge, N Buchanan, H Budd, D Calvet, SL Cartwright, A Carver, R Castillo, MG Catanesi, A Cazes, A Cervera, C Chavez, S Choi, G Christodoulou, J Coleman, G Collazuol, W Coleman, K Connolly, A Curioni, A Dabrowska, I Danko, R Das, GS Davies, S Davis, M Day, G De Rosa, JPAM de André, P de Perio, T Dealtry, A Delbart, C Densham, F Di Lodovico, S Di Luise, P Dinh Tran, J Dobson, U Dore, O Drapier, F Dufour, J Dumarchez, S Dytman, M Dziewiecki, M Dziomba, S Emery, A Ereditato, JE Escallier, L Escudero, LS Esposito, M Fechner, A Ferrero, AJ Finch, E Frank, Y Fujii, Y Fukuda, V Galymov, GL Ganetis, FC Gannaway, A Gaudin, A Gendotti, M George, S Giffin, C Giganti, K Gilje, AK Ghosh, T Golan, M Goldhaber, JJ Gomez-Cadenas, S Gomi, M Gonin, N Grant, A Grant, P Gumplinger, P Guzowski, A Haesler, MD Haigh, K Hamano, C Hansen, D Hansen, T Hara, PF Harrison, B Hartfiel, M Hartz, T Haruyama, T Hasegawa, NC Hastings, A Hatzikoutelis, K Hayashi, Y Hayato, C Hearty, RL Helmer, R Henderson, N Higashi, J Hignight, A Hillairet, E Hirose, J Holeczek, S Horikawa, A Hyndman, AK Ichikawa, K Ieki, M Ieva, M Iida, M Ikeda, J Ilic, J Imber, T Ishida, C Ishihara, T Ishii, SJ Ives, M Iwasaki, K Iyogi, A Izmaylov, B Jamieson, RA Johnson, KK Joo, GV Jover-Manas, CK Jung, H Kaji, T Kajita, H Kakuno, J Kameda, K Kaneyuki, D Karlen, K Kasami, I Kato, H Kawamuko, E Kearns, M Khabibullin, F Khanam, A Khotjantsev, D Kielczewska, T Kikawa, J Kim, JY Kim, SB Kim, N Kimura, B Kirby, J Kisiel, P Kitching, T Kobayashi, G Kogan, S Koike, A Konaka, LL Kormos, A Korzenev, K Koseki, Y Koshio, Y Kouzuma, K Kowalik, V Kravtsov, I Kreslo, W Kropp, H Kubo, J Kubota, Y Kudenko, N Kulkarni, Y Kurimoto, R Kurjata, T Kutter, J Lagoda, K Laihem, M Laveder, KP Lee, PT Le, JM Levy, C Licciardi, IT Lim, T Lindner, RP Litchfield, M Litos, A Longhin, GD Lopez, PF Loverre, L Ludovici, T Lux, M Macaire, K Mahn, Y Makida, M Malek, S Manly, A Marchionni, AD Marino, AJ Marone, J Marteau, JF Martin, T Maruyama, T Maryon, J Marzec, P Masliah, EL Mathie, C Matsumura, K Matsuoka, V Matveev, K Mavrokoridis, E Mazzucato, N McCauley, KS McFarland, C McGrew, T McLachlan, M Messina, W Metcalf, C Metelko, M Mezzetto, P Mijakowski, CA Miller, A Minamino, O Mineev, S Mine, AD Missert, G Mituka, M Miura, K Mizouchi, L Monfregola, F Moreau, B Morgan, S Moriyama, A Muir, A Murakami, JF Muratore, M Murdoch, S Murphy, J Myslik, N Nagai, T Nakadaira, M Nakahata, T Nakai, K Nakajima, T Nakamoto, K Nakamura, S Nakayama, T Nakaya, D Naples, ML Navin, B Nelson, TC Nicholls, C Nielsen, K Nishikawa, H Nishino, K Nitta, T Nobuhara, JA Nowak, Y Obayashi, T Ogitsu, H Ohhata, T Okamura, K Okumura, T Okusawa, SM Oser, M Otani, RA Owen, Y Oyama, T Ozaki, MY Pac, V Palladino, V Paolone, P Paul, D Payne, GF Pearce, JD Perkin, V Pettinacci, F Pierre, E Poplawska, B Popov, M Posiadala, J-M Poutissou, R Poutissou, P Przewlocki, W Qian, JL Raaf, E Radicioni, PN Ratoff, TM Raufer, M Ravonel, M Raymond, F Retiere, A Robert, PA Rodrigues, E Rondio, JM Roney, B Rossi, S Roth, A Rubbia, D Ruterbories, S Sabouri, R Sacco, K Sakashita, F Sánchez, A Sarrat, K Sasaki, K Scholberg, J Schwehr, M Scott, DI Scully, Y Seiya, T Sekiguchi, H Sekiya, M Shibata, Y Shimizu, M Shiozawa, S Short, M Siyad, RJ Smith, M Smy, JT Sobczyk, H Sobel, M Sorel, A Stahl, P Stamoulis, J Steinmann, B Still, J Stone, M Stodulski, C Strabel, R Sulej, A Suzuki, K Suzuki, S Suzuki, SY Suzuki, Y Suzuki, Y Suzuki, J Swierblewski, T Szeglowski, M Szeptycka, R Tacik, M Tada, M Taguchi, S Takahashi, A Takeda, Y Takenaga, Y Takeuchi, K Tanaka, HA Tanaka, M Tanaka, MM Tanaka, N Tanimoto, K Tashiro, I Taylor, A Terashima, D Terhorst, R Terri, LF Thompson, A Thorley, W Toki, S Tobayama, T Tomaru, Y Totsuka, C Touramanis, T Tsukamoto, M Tzanov, Y Uchida, K Ueno, A Vacheret, M Vagins, G Vasseur, T Wachala, JJ Walding, AV Waldron, CW Walter, PJ Wanderer, J Wang, MA Ward, GP Ward, D Wark, MO Wascko, A Weber, R Wendell, N West, LH Whitehead, G Wikström, RJ Wilkes, MJ Wilking, Z Williamson, JR Wilson, RJ Wilson, T Wongjirad, S Yamada, Y Yamada, A Yamamoto, K Yamamoto, Y Yamanoi, H Yamaoka, T Yamauchi, C Yanagisawa, T Yano, S Yen, N Yershov, M Yokoyama, T Yuan, A Zalewska, J Zalipska, L Zambelli, K Zaremba, M Ziembicki, ED Zimmerman, M Zito, J Zmuda
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Observation of the baryonic flavor-changing neutral current decay Λb0→Λμ+μ-

Physical Review Letters 107:20 (2011)

Authors:

T Aaltonen, B Álvarez González, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, JA Appel, A Apresyan, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, B Auerbach, A Aurisano, F Azfar, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Barria, P Bartos, M Bauce, G Bauer, F Bedeschi, D Beecher, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, I Bizjak, KR Bland, C Blocker, B Blumenfeld, A Bocci, A Bodek, D Bortoletto, J Boudreau, A Boveia, B Brau, L Brigliadori, A Brisuda, C Bromberg, E Brucken, M Bucciantonio, J Budagov, HS Budd, S Budd, K Burkett, G Busetto, P Bussey, A Buzatu, S Cabrera, C Calancha, S Camarda, M Campanelli, M Campbell, F Canelli, A Canepa, B Carls, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, JP Chou, WH Chung, YS Chung, CI Ciobanu, MA Ciocci, A Clark, D Clark, G Compostella, ME Convery, J Conway, M Corbo, M Cordelli, CA Cox, DJ Cox, F Crescioli

Abstract:

We report the first observation of the baryonic flavor-changing neutral current decay Λb0→Λμ+μ- with 24 signal events and a statistical significance of 5.8 Gaussian standard deviations. This measurement uses a pp̄ collisions data sample corresponding to 6.8fb-1 at √s=1.96TeV collected by the CDF II detector at the Tevatron collider. The total and differential branching ratios for Λb0→Λμ+μ- are measured. We find B(Λb0→Λμ+μ-)=[1.73±0. 42(stat)±(syst)]×10-6. We also report the first measurement of the differential branching ratio of Bs0→μ+μ -, using 49 signal events. In addition, we report branching ratios for B+→K+μ+μ-, B0→K0μ+μ-, and B→K*(892) μ+μ- decays. © 2011 American Physical Society.
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Search for Bs0→μ+μ- and B0→μ+μ- decays with CDF II

Physical Review Letters 107:19 (2011)

Authors:

T Aaltonen, B Álvarez González, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, JA Appel, A Apresyan, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, B Auerbach, A Aurisano, F Azfar, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Barria, P Bartos, M Bauce, G Bauer, F Bedeschi, D Beecher, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, I Bizjak, KR Bland, B Blumenfeld, A Bocci, A Bodek, D Bortoletto, J Boudreau, A Boveia, L Brigliadori, A Brisuda, C Bromberg, E Brucken, M Bucciantonio, J Budagov, HS Budd, S Budd, K Burkett, G Busetto, P Bussey, A Buzatu, C Calancha, S Camarda, M Campanelli, M Campbell, F Canelli, B Carls, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, JP Chou, WH Chung, YS Chung, CI Ciobanu, MA Ciocci, A Clark, C Clarke, G Compostella, ME Convery, J Conway, M Corbo, M Cordelli, CA Cox, DJ Cox, F Crescioli, C Cuenca Almenar, J Cuevas, R Culbertson, D Dagenhart

Abstract:

A search has been performed for Bs0→μ+μ- and B0→μ+μ- decays using 7fb-1 of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. The observed number of B0 candidates is consistent with background-only expectations and yields an upper limit on the branching fraction of B(B0→μ+μ-)<6.0×10-9 at 95% confidence level. We observe an excess of Bs0 candidates. The probability that the background processes alone could produce such an excess or larger is 0.27%. The probability that the combination of background and the expected standard model rate of Bs0→μ+μ- could produce such an excess or larger is 1.9%. These data are used to determine B(Bs0→μ+μ-)=(1.8-0.9+1.1)×10 -8 and provide an upper limit of B(Bs0→μ+μ -)<4.0×10-8 at 95% confidence level. © 2011 American Physical Society.
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Search for new T′ particles in final states with large jet multiplicities and missing transverse energy in pp̄ collisions at √s=1.96TeV

Physical Review Letters 107:19 (2011)

Authors:

T Aaltonen, B Álvarez González, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, JA Appel, A Apresyan, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, B Auerbach, A Aurisano, F Azfar, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Barria, P Bartos, M Bauce, G Bauer, F Bedeschi, D Beecher, S Behari, G Bellettini, J Bellinger, D Benjamin, M Bentivegna, A Beretvas, A Bhatti, M Binkley, D Bisello, I Bizjak, KR Bland, B Blumenfeld, A Bocci, A Bodek, D Bortoletto, J Boudreau, A Boveia, B Brau, L Brigliadori, A Brisuda, C Bromberg, E Brucken, M Bucciantonio, J Budagov, HS Budd, S Budd, K Burkett, G Busetto, P Bussey, A Buzatu, C Calancha, S Camarda, M Campanelli, M Campbell, F Canelli, A Canepa, B Carls, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, JP Chou, WH Chung, YS Chung, CI Ciobanu, MA Ciocci, A Clark, G Compostella, ME Convery, J Conway, M Corbo, M Cordelli, CA Cox, DJ Cox, F Crescioli, C Cuenca Almenar, J Cuevas

Abstract:

We present a search for a new particle T′ decaying to a top quark via T′→t+X, where X goes undetected. We use a data sample corresponding to 5.7fb-1 of integrated luminosity of pp̄ collisions with √s=1.96TeV, collected at Fermilab Tevatron by the CDF II detector. Our search for pair production of T′ is focused on the hadronic decay channel, pp̄→T′T ̄′→tt̄+XX̄→bqq̄b̄ qq̄+XX̄. We interpret our results in terms of a model where T ′ is an exotic fourth generation quark and X is a dark matter particle. The data are consistent with standard model expectations. We set a limit on the generic production of T′T̄′→tt̄+XX̄, excluding the fourth generation exotic quarks T′ at 95% confidence level up to m T′=400GeV/c2 for mX≤70GeV/c2. © 2011 American Physical Society.
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