Improved search for a Higgs boson produced in association with Z → l+ l- in pp collisions sqrt[s] = 1.96 TeV.
Physical review letters 105:25 (2010) 251802
Authors:
T Aaltonen, B Alvarez 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, C Cuenca Almenar, J Cuevas, R Culbertson, D Dagenhart, N d'Ascenzo, M Datta, P de Barbaro, S De Cecco, G De Lorenzo, M Dell'Orso, C Deluca, L Demortier, J Deng, M Deninno, F Devoto, M d'Errico, A Di Canto, B Di Ruzza, JR Dittmann, M D'Onofrio, S Donati, P Dong, T Dorigo, K Ebina, A Elagin, A Eppig, R Erbacher, D Errede, S Errede, N Ershaidat, R Eusebi, HC Fang, S Farrington, M Feindt, JP Fernandez, C Ferrazza, R Field, G Flanagan, R Forrest, MJ Frank, M Franklin, JC Freeman, I Furic, M Gallinaro, J Galyardt, JE Garcia, AF Garfinkel, P Garosi, H Gerberich, E Gerchtein, S Giagu, V Giakoumopoulou, P Giannetti, K Gibson, CM Ginsburg, N Giokaris, P Giromini, M Giunta, 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, A Gresele, S Grinstein, C Grosso-Pilcher, J Guimaraes da Costa, Z Gunay-Unalan, C Haber, 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, D Hidas, 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, MK Jha, S Jindariani, W Johnson, M Jones, KK Joo, SY Jun, TR Junk, T Kamon, PE Karchin, Y Kato, W Ketchum, J Keung, V Khotilovich, B Kilminster, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kim, N Kimura, S Klimenko, K Kondo, DJ Kong, J Konigsberg, A Korytov, AV Kotwal, M Kreps, J Kroll, D Krop, N Krumnack, 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, I Lazzizzera, T Lecompte, E Lee, HS Lee, JS Lee, SW Lee, S Leo, S Leone, JD Lewis, C-J Lin, J Linacre, M Lindgren, E Lipeles, A Lister, DO Litvintsev, C Liu, Q Liu, T Liu, S Lockwitz, NS Lockyer, A Loginov, D Lucchesi, J Lueck, P Lujan, P Lukens, G Lungu, J Lys, R Lysak, R Madrak, K Maeshima, K Makhoul, P Maksimovic, S Malik, G Manca, A Manousakis-Katsikakis, F Margaroli, C Marino, M Martínez, R Martínez-Ballarín, P Mastrandrea, M Mathis, ME Mattson, P Mazzanti, KS McFarland, P McIntyre, R McNulty, A Mehta, P Mehtala, A Menzione, 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, O Norniella, E Nurse, 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, K Potamianos, O Poukhov, F Prokoshin, A Pronko, F Ptohos, E Pueschel, G Punzi, J Pursley, A Rahaman, V Ramakrishnan, N Ranjan, I Redondo, P Renton, M Rescigno, F Rimondi, L Ristori, A Robson, T Rodrigo, T Rodriguez, E Rogers, S Rolli, R Roser, M Rossi, F Ruffini, A Ruiz, J Russ, V Rusu, A Safonov, WK Sakumoto, L Santi, L Sartori, K Sato, V Saveliev, A Savoy-Navarro, P Schlabach, A Schmidt, EE Schmidt, MP Schmidt, M Schmitt, T Schwarz, L Scodellaro, A Scribano, F Scuri, A Sedov, S Seidel, Y Seiya, A Semenov, F Sforza, A Sfyrla, SZ Shalhout, T Shears, R Shekhar, PF Shepard, M Shimojima, S Shiraishi, M Shochet, I Shreyber, A Simonenko, P Sinervo, A Sissakian, K Sliwa, JR Smith, FD Snider, A Soha, S Somalwar, V Sorin, P Squillacioti, M Stanitzki, 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, P Ttito-Guzmán, S Tkaczyk, D Toback, S Tokar, K Tollefson, T Tomura, D Tonelli, S Torre, D Torretta, P Totaro, M Trovato, Y Tu, N Turini, F Ukegawa, S Uozumi, A Varganov, E Vataga, F Vázquez, G Velev, C Vellidis, M Vidal, I Vila, R Vilar, M Vogel, G Volpi, P Wagner, RL Wagner, T Wakisaka, R Wallny, SM Wang, A Warburton, D Waters, M Weinberger, WC Wester, B Whitehouse, 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, J Yamaoka, 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, S Zucchelli, CDF CollaborationAbstract:
We search for the standard model Higgs boson produced with a Z boson in 4.1 fb(-1) of integrated luminosity collected with the CDF II detector at the Tevatron. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z boson to electrons or muons, we set 95% credibility level upper limits on the ZH production cross section multiplied by the H → bb branching ratio. Improved analysis methods enhance signal sensitivity by 20% relative to previous searches. At a Higgs boson mass of 115 GeV/c2 we set a limit of 5.9 times the standard model cross section.Search for quark compositeness with the dijet centrality ratio in pp collisions at √s=7 TeV.
Physical review letters 105:26 (2010) 262001
Authors:
V Khachatryan, AM Sirunyan, A Tumasyan, W Adam, T Bergauer, M Dragicevic, J Erö, C Fabjan, M Friedl, R Frühwirth, VM Ghete, J Hammer, S Hänsel, C Hartl, M Hoch, N Hörmann, J Hrubec, M Jeitler, G Kasieczka, W Kiesenhofer, M Krammer, D Liko, I Mikulec, M Pernicka, H Rohringer, R Schöfbeck, J Strauss, A Taurok, F Teischinger, W Waltenberger, G Walzel, E Widl, C-E Wulz, V Mossolov, N Shumeiko, J Suarez Gonzalez, J Suarez Gonzalez, L Benucci, L Ceard, EA De Wolf, X Janssen, T Maes, L Mucibello, S Ochesanu, B Roland, R Rougny, M Selvaggi, H Van Haevermaet, P Van Mechelen, N Van Remortel, V Adler, S Beauceron, S Blyweert, J D'Hondt, O Devroede, A Kalogeropoulos, J Maes, M Maes, S Tavernier, W Van Doninck, P Van Mulders, GP Van Onsem, I Villella, O Charaf, B Clerbaux, G De Lentdecker, V Dero, APR Gay, GH Hammad, T Hreus, PE Marage, L Thomas, C Vander Velde, P Vanlaer, J Wickens, S Costantini, M Grunewald, B Klein, A Marinov, D Ryckbosch, F Thyssen, M Tytgat, L Vanelderen, P Verwilligen, S Walsh, N Zaganidis, S Basegmez, G Bruno, J Caudron, J De Favereau De Jeneret, C Delaere, P Demin, D Favart, A Giammanco, G Grégoire, J Hollar, V Lemaitre, O Militaru, S Ovyn, D Pagano, A Pin, K Piotrzkowski, L Quertenmont, N Schul, N Beliy, T Caebergs, E Daubie, GA Alves, D De JesusDamiao, ME Pol, MHG Souza, W Carvalho, EM Da Costa, C De Oliveira Martins, S Fonseca De Souza, L Mundim, H Nogima, V Oguri, JM Otalora Goicochea, WL Prado Da Silva, A Santoro, SM Silva Do Amaral, A Sznajder, F Torres Da Silva De Araujo, FA Dias, MAF Dias, TR Fernandez Perez Tomei, EM Gregores, F Marinho, SF Novaes, Sandra S Padula, N Darmenov, L Dimitrov, V Genchev, P Iaydjiev, S Piperov, M Rodozov, S Stoykova, G Sultanov, V Tcholakov, R Trayanov, I Vankov, M Dyulendarova, R Hadjiiska, V Kozhuharov, L Litov, E Marinova, M Mateev, B Pavlov, P Petkov, JG Bian, GM Chen, HS Chen, CH Jiang, D Liang, S Liang, J Wang, J Wang, X Wang, Z Wang, M Yang, J Zang, Z Zhang, Y Ban, S Guo, Z Hu, W Li, Y Mao, SJ Qian, H Teng, B Zhu, A Cabrera, B Gomez Moreno, AA Ocampo Rios, AF Osorio Oliveros, JC Sanabria, N Godinovic, D Lelas, K Lelas, R Plestina, D Polic, I Puljak, Z Antunovic, M Dzelalija, V Brigljevic, S Duric, K Kadija, S Morovic, A Attikis, R Fereos, M Galanti, J Mousa, C Nicolaou, F Ptochos, PA Razis, H Rykaczewski, A Abdel-basit, Y Assran, MA Mahmoud, A Hektor, M Kadastik, K Kannike, M Müntel, M Raidal, L Rebane, V Azzolini, P Eerola, S Czellar, J Härkönen, A Heikkinen, V Karimäki, R Kinnunen, J Klem, MJ Kortelainen, T Lampén, K Lassila-Perini, S Lehti, T Lindén, P Luukka, T Mäenpää, E Tuominen, J Tuominiemi, E Tuovinen, D Ungaro, L Wendland, K Banzuzi, A Korpela, T Tuuva, D Sillou, M Besancon, M Dejardin, D Denegri, B Fabbro, JL Faure, F Ferri, S Ganjour, FX Gentit, A Givernaud, P Gras, G Hamel de Monchenault, P Jarry, E Locci, J Malcles, M Marionneau, L Millischer, J Rander, A Rosowsky, M Titov, P Verrecchia, S Baffioni, L Bianchini, M Bluj, C Broutin, P Busson, C Charlot, L Dobrzynski, R Granier 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J Goldstein, M Grimes, M Hansen, GP Heath, HF Heath, B Huckvale, J Jackson, L Kreczko, S Metson, DM Newbold, K Nirunpong, A Poll, VJ Smith, S Ward, L Basso, KW Bell, A Belyaev, C Brew, RM Brown, B Camanzi, DJA Cockerill, JA Coughlan, K Harder, S Harper, BW Kennedy, E Olaiya, D Petyt, BC Radburn-Smith, CH Shepherd-Themistocleous, IR Tomalin, WJ Womersley, SD Worm, R Bainbridge, G Ball, J Ballin, R Beuselinck, O Buchmuller, D Colling, N Cripps, M Cutajar, G Davies, M Della Negra, J Fulcher, D Futyan, A Guneratne Bryer, G Hall, Z Hatherell, J Hays, G Iles, G Karapostoli, L Lyons, A-M Magnan, J Marrouche, R Nandi, J Nash, A Nikitenko, A Papageorgiou, M Pesaresi, K Petridis, M Pioppi, DM Raymond, N Rompotis, A Rose, MJ Ryan, C Seez, P Sharp, A Sparrow, A Tapper, S Tourneur, M Vazquez Acosta, T Virdee, S Wakefield, D Wardrope, T Whyntie, M Barrett, M Chadwick, JE Cole, PR Hobson, A Khan, P Kyberd, D Leslie, W Martin, ID Reid, L Teodorescu, K Hatakeyama, T Bose, E Carrera Jarrin, A Clough, C 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Letts, B Mangano, J Muelmenstaedt, S Padhi, C Palmer, G Petrucciani, H Pi, M Pieri, R Ranieri, M Sani, V Sharma, S Simon, Y Tu, A Vartak, F Würthwein, A Yagil, D Barge, R Bellan, C Campagnari, M D'Alfonso, T Danielson, P Geffert, J Incandela, C Justus, P Kalavase, SA Koay, D Kovalskyi, V Krutelyov, S Lowette, N McColl, V Pavlunin, F Rebassoo, J Ribnik, J Richman, R Rossin, D Stuart, W To, JR Vlimant, M Witherell, A Bornheim, J Bunn, Y Chen, M Gataullin, D Kcira, V Litvine, Y Ma, A Mott, HB Newman, C Rogan, K Shin, V Timciuc, P Traczyk, J Veverka, R Wilkinson, Y Yang, RY Zhu, B Akgun, A Calamba, R Carroll, T Ferguson, Y Iiyama, DW Jang, SY Jun, YF Liu, M Paulini, J Russ, N Terentyev, H Vogel, I Vorobiev, JP Cumalat, ME Dinardo, BR Drell, CJ Edelmaier, WT Ford, B Heyburn, E Luiggi Lopez, U Nauenberg, JG Smith, K Stenson, KA Ulmer, SR Wagner, SL Zang, L Agostino, J Alexander, F Blekman, A Chatterjee, S Das, N Eggert, LJ Fields, LK Gibbons, B Heltsley, K Henriksson, W Hopkins, A Khukhunaishvili, B Kreis, V Kuznetsov, Y Liu, G Nicolas Kaufman, JR Patterson, D Puigh, D Riley, A Ryd, M Saelim, X Shi, W Sun, WD Teo, J Thom, J Thompson, J Vaughan, Y Weng, L Winstrom, P Wittich, A Biselli, G Cirino, D Winn, S Abdullin, M Albrow, J Anderson, G Apollinari, M Atac, JA Bakken, S Banerjee, LAT Bauerdick, A Beretvas, J Berryhill, PC Bhat, I Bloch, F Borcherding, K Burkett, JN Butler, V Chetluru, HWK Cheung, F Chlebana, S Cihangir, M Demarteau, DP Eartly, VD Elvira, I Fisk, J Freeman, Y Gao, E Gottschalk, D Green, K Gunthoti, O Gutsche, A Hahn, J Hanlon, RM Harris, J Hirschauer, B Hooberman, E James, H Jensen, M Johnson, U Joshi, R Khatiwada, B Kilminster, B Klima, K Kousouris, S Kunori, S Kwan, P Limon, R Lipton, J Lykken, K Maeshima, JM Marraffino, D Mason, P McBride, T McCauley, T Miao, K Mishra, S Mrenna, Y Musienko, C Newman-Holmes, V O'Dell, S Popescu, R Pordes, O Prokofyev, N Saoulidou, E Sexton-Kennedy, S Sharma, A Soha, WJ Spalding, L Spiegel, P Tan, L Taylor, S Tkaczyk, L Uplegger, EW Vaandering, R Vidal, J Whitmore, W Wu, F Yang, F Yumiceva, JC Yun, D Acosta, P Avery, D Bourilkov, M Chen, GP Di Giovanni, D Dobur, A Drozdetskiy, RD Field, M Fisher, Y Fu, IK Furic, J Gartner, S Goldberg, B Kim, S Klimenko, J Konigsberg, A Korytov, K Kotov, A Kropivnitskaya, T Kypreos, K Matchev, G Mitselmakher, L Muniz, Y Pakhotin, M Petterson, C Prescott, R Remington, M Schmitt, B Scurlock, P Sellers, N Skhirtladze, M Snowball, D Wang, J Yelton, M Zakaria, C Ceron, V Gaultney, L Kramer, LM Lebolo, S Linn, P Markowitz, G Martinez, G Martinez, D Mesa, JL Rodriguez, T Adams, A Askew, J Bochenek, J Chen, B Diamond, SV Gleyzer, J Haas, S Hagopian, V Hagopian, M Jenkins, KF Johnson, H Prosper, S Sekmen, V Veeraraghavan, MM Baarmand, B Dorney, S Guragain, M Hohlmann, H Kalakhety, R Ralich, I Vodopiyanov, MR Adams, IM Anghel, L Apanasevich, Y Bai, VE Bazterra, RR Betts, J Callner, R Cavanaugh, C Dragoiu, EJ Garcia-Solis, CE Gerber, DJ Hofman, S Khalatyan, F Lacroix, C O'Brien, C Silvestre, A Smoron, D Strom, N Varelas, U Akgun, EA Albayrak, B Bilki, K Cankocak, W Clarida, F Duru, CK Lae, E McCliment, J-P Merlo, H Mermerkaya, A Mestvirishvili, A Moeller, J Nachtman, CR Newsom, E Norbeck, J Olson, Y Onel, F Ozok, S Sen, J Wetzel, T Yetkin, K Yi, BA Barnett, B Blumenfeld, A Bonato, C Eskew, D Fehling, G Giurgiu, AV Gritsan, ZJ Guo, G Hu, P Maksimovic, S Rappoccio, M Swartz, NV Tran, A Whitbeck, P Baringer, A Bean, G Benelli, O Grachov, M Murray, D Noonan, V Radicci, S Sanders, JS Wood, V Zhukova, D Bandurin, T Bolton, I Chakaberia, A Ivanov, M Makouski, Y Maravin, S Shrestha, I Svintradze, Z Wan, J Gronberg, D Lange, D Wright, A Baden, M Boutemeur, SC Eno, D Ferencek, JA Gomez, NJ Hadley, RG Kellogg, M Kirn, Y Lu, AC Mignerey, K Rossato, P Rumerio, F Santanastasio, A Skuja, J Temple, MB Tonjes, SC Tonwar, E Twedt, B Alver, G Bauer, J Bendavid, W Busza, E Butz, IA Cali, M Chan, V Dutta, P Everaerts, G Gomez Ceballos, M Goncharov, KA Hahn, P Harris, Y Kim, M Klute, Y-J Lee, W Li, C Loizides, J Lopez, PD Luckey, T Ma, S Nahn, C Paus, C Roland, G Roland, M Rudolph, GSF Stephans, K Sumorok, K Sung, EA Wenger, S Xie, M Yang, Y Yilmaz, AS Yoon, M Zanetti, P Cole, SI Cooper, P Cushman, B Dahmes, A De Benedetti, PR Dudero, G Franzoni, J Haupt, K Klapoetke, Y Kubota, J Mans, V Rekovic, R Rusack, M Sasseville, A Singovsky, LM Cremaldi, R Godang, R Kroeger, L Perera, R Rahmat, DA Sanders, D Summers, K Bloom, S Bose, J Butt, DR Claes, A Dominguez, M Eads, J Keller, T Kelly, I Kravchenko, J Lazo-Flores, C Lundstedt, H Malbouisson, S Malik, GR Snow, U Baur, A Godshalk, I Iashvili, A Kharchilava, A Kumar, K Smith, J Zennamo, G Alverson, E Barberis, D Baumgartel, O Boeriu, M Chasco, K Kaadze, S Reucroft, J Swain, D Wood, J Zhang, A Anastassov, A Kubik, N Odell, RA Ofierzynski, B Pollack, A Pozdnyakov, M Schmitt, S Stoynev, M Velasco, S Won, L Antonelli, D Berry, M Hildreth, C Jessop, DJ Karmgard, J Kolb, T Kolberg, K Lannon, W Luo, S Lynch, N Marinelli, DM Morse, T Pearson, R Ruchti, J Slaunwhite, N Valls, J Warchol, M Wayne, J Ziegler, B Bylsma, LS Durkin, J Gu, C Hill, P Killewald, TY Ling, M Rodenburg, G Williams, N Adam, E Berry, P Elmer, D Gerbaudo, V Halyo, P Hebda, A Hunt, J Jones, E Laird, D Lopes Pegna, D Marlow, T Medvedeva, M Mooney, J Olsen, P Piroué, H Saka, D Stickland, C Tully, JS Werner, A Zuranski, JG Acosta, XT Huang, A Lopez, H Mendez, S Oliveros, JE Ramirez Vargas, A Zatserklyaniy, E Alagoz, VE Barnes, G Bolla, L Borrello, D Bortoletto, A Everett, AF Garfinkel, Z Gecse, L Gutay, M Jones, O Koybasi, AT Laasanen, N Leonardo, C Liu, V Maroussov, M Meier, P Merkel, DH Miller, N Neumeister, K Potamianos, I Shipsey, D Silvers, A Svyatkovskiy, HD Yoo, J Zablocki, Y Zheng, P Jindal, N Parashar, C Boulahouache, V Cuplov, KM Ecklund, FJM Geurts, JH Liu, J Morales, BP Padley, R Redjimi, J Roberts, J Zabel, B Betchart, A Bodek, YS Chung, P de Barbaro, R Demina, Y Eshaq, H Flacher, A Garcia-Bellido, P Goldenzweig, Y Gotra, J Han, A Harel, DC Miner, D Orbaker, G Petrillo, D Vishnevskiy, M Zielinski, A Bhatti, L Demortier, K Goulianos, G Lungu, C Mesropian, M Yan, O Atramentov, A Barker, D Duggan, Y Gershtein, R Gray, E Halkiadakis, D Hidas, D Hits, A Lath, S Panwalkar, R Patel, A Richards, K Rose, S Schnetzer, S Somalwar, R Stone, S Thomas, G Cerizza, M Hollingsworth, S Spanier, ZC Yang, A York, J Asaadi, R Eusebi, J Gilmore, A Gurrola, T Kamon, V Khotilovich, R Montalvo, CN Nguyen, J Pivarski, A Safonov, S Sengupta, A Tatarinov, D Toback, M Weinberger, N Akchurin, C Bardak, J Damgov, C Jeong, K Kovitanggoon, SW Lee, P Mane, Y Roh, A Sill, I Volobouev, R Wigmans, E Yazgan, E Appelt, E Brownson, D Engh, C Florez, W Gabella, W Johns, P Kurt, C Maguire, A Melo, P Sheldon, J Velkovska, MW Arenton, M Balazs, S Boutle, M Buehler, S Conetti, B Cox, B Francis, R Hirosky, A Ledovskoy, C Lin, C Neu, T Patel, R Yohay, S Gollapinni, R Harr, PE Karchin, M Mattson, C Milstène, A Sakharov, M Anderson, M Bachtis, JN Bellinger, D Carlsmith, S Dasu, J Efron, L Gray, KS Grogg, M Grothe, R Hall-Wilton, M Herndon, P Klabbers, J Klukas, A Lanaro, C Lazaridis, J Leonard, J Liu, D Lomidze, R Loveless, A Mohapatra, W Parker, D Reeder, I Ross, A Savin, WH Smith, J Swanson, M Weinberg, CMS CollaborationAbstract:
A search for quark compositeness in the form of quark contact interactions, based on hadronic jet pairs (dijets) produced in proton-proton collisions at √s=7 TeV, is described. The data sample of the study corresponds to an integrated luminosity of 2.9 pb(-1) collected with the CMS detector at the LHC. The dijet centrality ratio, which quantifies the angular distribution of the dijets, is measured as a function of the invariant mass of the dijet system and is found to agree with the predictions of the standard model. A statistical analysis of the data provides a lower limit on the energy scale of quark contact interactions. The sensitivity of the analysis is such that the expected limit is 2.9 TeV; because the observed value of the centrality ratio at high invariant mass is below the expectation, the observed limit is 4.0 TeV at the 95% confidence level.Top quark mass measurement in the lepton + jets channel using a matrix element method and in situ jet energy calibration.
Physical review letters 105:25 (2010) 252001
Authors:
T Aaltonen, B Alvarez 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, 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, R Culbertson, D Dagenhart, N d'Ascenzo, M Datta, P de Barbaro, S De Cecco, G De Lorenzo, M Dell'Orso, C Deluca, L Demortier, J Deng, M Deninno, F Devoto, M d'Errico, A Di Canto, B Di Ruzza, JR Dittmann, M D'Onofrio, S Donati, P Dong, T Dorigo, K Ebina, A Elagin, A Eppig, R Erbacher, D Errede, S Errede, N Ershaidat, R Eusebi, HC Fang, S Farrington, M Feindt, JP Fernandez, C Ferrazza, R Field, G Flanagan, R Forrest, MJ Frank, M Franklin, JC Freeman, I Furic, M Gallinaro, J Galyardt, JE Garcia, AF Garfinkel, P Garosi, H Gerberich, E Gerchtein, S Giagu, V Giakoumopoulou, P Giannetti, K Gibson, CM Ginsburg, N Giokaris, P Giromini, M Giunta, 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, A Gresele, S Grinstein, C Grosso-Pilcher, J Guimaraes da Costa, Z Gunay-Unalan, C Haber, 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, D Hidas, 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, MK Jha, S Jindariani, W Johnson, M Jones, KK Joo, SY Jun, TR Junk, T Kamon, PE Karchin, Y Kato, W Ketchum, J Keung, V Khotilovich, B Kilminster, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kim, N Kimura, M Kirby, S Klimenko, K Kondo, DJ Kong, J Konigsberg, AV Kotwal, M Kreps, J Kroll, D Krop, N Krumnack, 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, I Lazzizzera, T LeCompte, E Lee, HS Lee, JS Lee, SW Lee, S Leo, S Leone, JD Lewis, C-J Lin, J Linacre, M Lindgren, E Lipeles, A Lister, DO Litvintsev, C Liu, Q Liu, T Liu, S Lockwitz, NS Lockyer, A Loginov, D Lucchesi, J Lueck, P Lujan, P Lukens, G Lungu, J Lys, R Lysak, R Madrak, K Maeshima, K Makhoul, P Maksimovic, S Malik, G Manca, A Manousakis-Katsikakis, F Margaroli, C Marino, M Martínez, R Martínez-Ballarín, P Mastrandrea, M Mathis, ME Mattson, P Mazzanti, KS McFarland, P McIntyre, R McNulty, A Mehta, P Mehtala, A Menzione, 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, O Norniella, E Nurse, 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, K Potamianos, O Poukhov, F Prokoshin, A Pronko, F Ptohos, E Pueschel, G Punzi, J Pursley, A Rahaman, V Ramakrishnan, N Ranjan, I Redondo, P Renton, M Rescigno, F Rimondi, L Ristori, A Robson, T Rodrigo, T Rodriguez, E Rogers, S Rolli, R Roser, M Rossi, F Rubbo, F Ruffini, A Ruiz, J Russ, V Rusu, A Safonov, WK Sakumoto, L Santi, L Sartori, K Sato, V Saveliev, A Savoy-Navarro, P Schlabach, A Schmidt, EE Schmidt, MP Schmidt, M Schmitt, T Schwarz, L Scodellaro, A Scribano, F Scuri, A Sedov, S Seidel, Y Seiya, A Semenov, F Sforza, A Sfyrla, SZ Shalhout, T Shears, PF Shepard, M Shimojima, S Shiraishi, M Shochet, I Shreyber, J Siegrist, A Simonenko, P Sinervo, A Sissakian, K Sliwa, JR Smith, FD Snider, A Soha, S Somalwar, V Sorin, P Squillacioti, M Stanitzki, 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, P Ttito-Guzmán, S Tkaczyk, D Toback, S Tokar, K Tollefson, T Tomura, D Tonelli, S Torre, D Torretta, P Totaro, M Trovato, Y Tu, N Turini, F Ukegawa, S Uozumi, A Varganov, E Vataga, F Vázquez, G Velev, C Vellidis, M Vidal, I Vila, R Vilar, I Volobouev, M Vogel, G Volpi, P Wagner, RL Wagner, T Wakisaka, R Wallny, SM Wang, A Warburton, D Waters, M Weinberger, WC Wester, B Whitehouse, 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, J Yamaoka, 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, S Zucchelli, CDF CollaborationAbstract:
A precision measurement of the top quark mass m(t) is obtained using a sample of tt events from pp collisions at the Fermilab Tevatron with the CDF II detector. Selected events require an electron or muon, large missing transverse energy, and exactly four high-energy jets, at least one of which is tagged as coming from a b quark. A likelihood is calculated using a matrix element method with quasi-Monte Carlo integration taking into account finite detector resolution and jet mass effects. The event likelihood is a function of m(t) and a parameter Δ(JES) used to calibrate the jet energy scale in situ. Using a total of 1087 events in 5.6 fb(-1) of integrated luminosity, a value of m(t)=173.0 ± 1.2 GeV/c(2) is measured.Studies of the performance of the ATLAS detector using cosmic-ray muons
ArXiv 1011.6665 (2010)
Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at sqrt(S(NN))= 2.76 TeV with the ATLAS Detector at the LHC
ArXiv 1011.6182 (2010)