Search for anomalous production of multilepton events in pp collisions at
Journal of High Energy Physics Springer Nature 2012:6 (2012) 169
Authors:
The CMS collaboration, S Chatrchyan, V Khachatryan, AM Sirunyan, A Tumasyan, W Adam, T Bergauer, M Dragicevic, J Erö, C Fabjan, M Friedl, R Frühwirth, VM Ghete, J Hammer, N Hörmann, J Hrubec, M Jeitler, W Kiesenhofer, V Knünz, M Krammer, D Liko, I Mikulec, M Pernicka, B Rahbaran, C Rohringer, H Rohringer, R Schöfbeck, J Strauss, A Taurok, P Wagner, W Waltenberger, G Walzel, E Widl, C-E Wulz, V Mossolov, N Shumeiko, J Suarez Gonzalez, S Bansal, K Cerny, T Cornelis, EA De Wolf, X Janssen, S Luyckx, T Maes, L Mucibello, S Ochesanu, B Roland, R Rougny, M Selvaggi, H Van Haevermaet, P Van Mechelen, N Van Remortel, A Van Spilbeeck, F Blekman, S Blyweert, J D’Hondt, R Gonzalez Suarez, A Kalogeropoulos, M Maes, A Olbrechts, W Van Doninck, P Van Mulders, GP Van Onsem, I Villella, O Charaf, B Clerbaux, G De Lentdecker, V Dero, APR Gay, T Hreus, A Léonard, PE Marage, T Reis, L Thomas, C Vander Velde, P Vanlaer, V Adler, K Beernaert, A Cimmino, S Costantini, G Garcia, M Grunewald, B Klein, J Lellouch, A Marinov, J Mccartin, AA Ocampo Rios, D Ryckbosch, N Strobbe, F Thyssen, M Tytgat, L Vanelderen, P Verwilligen, S Walsh, E Yazgan, N Zaganidis, S Basegmez, G Bruno, L Ceard, C Delaere, T du Pree, D Favart, L Forthomme, A Giammanco, J Hollar, V Lemaitre, J Liao, O Militaru, C Nuttens, D Pagano, A Pin, K Piotrzkowski, N Schul, N Beliy, T Caebergs, E Daubie, GH Hammad, GA Alves, M Correa Martins Junior, D De Jesus Damiao, T Martins, ME Pol, MHG Souza, WL Aldá Júnior, W Carvalho, A Custódio, EM Da Costa, C De Oliveira Martins, S Fonseca De Souza, D Matos Figueiredo, L Mundim, H Nogima, V Oguri, WL Prado Da Silva, A Santoro, SM Silva Do Amaral, L Soares Jorge, A Sznajder, TS Anjos, CA Bernardes, FA Dias, TR Fernandez Perez Tomei, EM Gregores, C Lagana, F Marinho, PG Mercadante, SF Novaes, Sandra S Padula, V Genchev, P Iaydjiev, S Piperov, M Rodozov, S Stoykova, G Sultanov, V Tcholakov, R Trayanov, M Vutova, A Dimitrov, R Hadjiiska, V Kozhuharov, L Litov, B Pavlov, P Petkov, JG Bian, GM Chen, HS Chen, CH Jiang, D Liang, S Liang, X Meng, J Tao, J Wang, J Wang, X Wang, Z Wang, H Xiao, M Xu, J Zang, Z Zhang, C Asawatangtrakuldee, Y Ban, S Guo, Y Guo, W Li, S Liu, Y Mao, SJ Qian, H Teng, S Wang, B Zhu, W Zou, C Avila, B Gomez Moreno, AF Osorio Oliveros, JC Sanabria, N Godinovic, D Lelas, R Plestina, D Polic, I Puljak, Z Antunovic, M Kovac, V Brigljevic, S Duric, K Kadija, J Luetic, S Morovic, A Attikis, M Galanti, G Mavromanolakis, J Mousa, C Nicolaou, F Ptochos, PA Razis, M Finger, M Finger, Y Assran, S Elgammal, A Ellithi Kamel, S Khalil, MA Mahmoud, A Radi, M Kadastik, M Müntel, M Raidal, L Rebane, A Tiko, V Azzolini, P Eerola, G Fedi, M Voutilainen, J Härkönen, A Heikkinen, V Karimäki, R Kinnunen, MJ Kortelainen, T Lampén, K Lassila-Perini, S Lehti, T Lindén, P Luukka, T Mäenpää, T Peltola, E Tuominen, J Tuominiemi, E Tuovinen, D Ungaro, L Wendland, K Banzuzi, A Korpela, T Tuuva, M Besancon, S Choudhury, M Dejardin, D Denegri, B Fabbro, JL Faure, F Ferri, S 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Vartak, S Wasserbaech, F Würthwein, A Yagil, J Yoo, D Barge, R Bellan, C Campagnari, M D’Alfonso, T Danielson, K Flowers, 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, C West, A Apresyan, A Bornheim, Y Chen, E Di Marco, J Duarte, M Gataullin, Y Ma, A Mott, HB Newman, C Rogan, V Timciuc, P Traczyk, J Veverka, R Wilkinson, Y Yang, RY Zhu, B Akgun, R Carroll, T Ferguson, Y Iiyama, DW Jang, YF Liu, M Paulini, H Vogel, I Vorobiev, JP Cumalat, BR Drell, CJ Edelmaier, WT Ford, A Gaz, B Heyburn, E Luiggi Lopez, JG Smith, K Stenson, KA Ulmer, SR Wagner, L Agostino, J Alexander, A Chatterjee, N Eggert, LK Gibbons, B Heltsley, W Hopkins, A Khukhunaishvili, B Kreis, N Mirman, G Nicolas Kaufman, JR Patterson, A Ryd, E Salvati, W Sun, WD Teo, J Thom, J Thompson, J Vaughan, Y Weng, L Winstrom, P Wittich, D Winn, S Abdullin, M Albrow, J Anderson, LAT Bauerdick, A Beretvas, J Berryhill, PC Bhat, I Bloch, K Burkett, JN Butler, V Chetluru, HWK Cheung, F Chlebana, VD Elvira, I Fisk, J Freeman, Y Gao, D Green, O Gutsche, A Hahn, J Hanlon, RM Harris, J Hirschauer, B Hooberman, S Jindariani, M Johnson, U Joshi, B Kilminster, B Klima, S Kunori, S Kwan, D Lincoln, R Lipton, L Lueking, J Lykken, K Maeshima, JM Marraffino, S Maruyama, D Mason, P McBride, K Mishra, S Mrenna, Y Musienko, C Newman-Holmes, V O’Dell, O Prokofyev, E Sexton-Kennedy, S Sharma, WJ Spalding, L Spiegel, P Tan, S Tkaczyk, NV Tran, L Uplegger, EW Vaandering, R Vidal, J Whitmore, W Wu, F Yang, F Yumiceva, JC Yun, D Acosta, P Avery, D Bourilkov, M Chen, S Das, M De Gruttola, GP Di Giovanni, D Dobur, A Drozdetskiy, RD Field, M Fisher, Y Fu, IK Furic, J Gartner, J Hugon, B Kim, J Konigsberg, A Korytov, A Kropivnitskaya, T Kypreos, JF Low, K Matchev, P Milenovic, G Mitselmakher, L Muniz, R Remington, A Rinkevicius, P Sellers, N Skhirtladze, M Snowball, J Yelton, M Zakaria, V Gaultney, LM Lebolo, S Linn, P Markowitz, G Martinez, 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, V Veeraraghavan, M Weinberg, MM Baarmand, B Dorney, M Hohlmann, H Kalakhety, I Vodopiyanov, MR Adams, IM Anghel, L Apanasevich, Y Bai, VE Bazterra, RR Betts, I Bucinskaite, J Callner, R Cavanaugh, C Dragoiu, O Evdokimov, EJ Garcia-Solis, L Gauthier, CE Gerber, DJ Hofman, S Khalatyan, F Lacroix, M Malek, C O’Brien, C Silkworth, D Strom, N Varelas, U Akgun, EA Albayrak, B Bilki, K Chung, W Clarida, F Duru, S Griffiths, CK Lae, J-P Merlo, H Mermerkaya, A Mestvirishvili, A Moeller, J Nachtman, CR Newsom, E Norbeck, J Olson, Y Onel, F Ozok, S Sen, E Tiras, J Wetzel, T Yetkin, K Yi, BA Barnett, B Blumenfeld, S Bolognesi, D Fehling, G Giurgiu, AV Gritsan, ZJ Guo, G Hu, P Maksimovic, S Rappoccio, M Swartz, A Whitbeck, P Baringer, A Bean, G Benelli, O Grachov, RP Kenny, M Murray, D Noonan, V Radicci, S Sanders, R Stringer, G Tinti, JS Wood, V Zhukova, AF Barfuss, T Bolton, I Chakaberia, A Ivanov, S Khalil, M Makouski, Y Maravin, S Shrestha, I Svintradze, J Gronberg, D Lange, D Wright, A Baden, M Boutemeur, B Calvert, SC Eno, JA Gomez, NJ Hadley, RG Kellogg, M Kirn, T Kolberg, Y Lu, M Marionneau, AC Mignerey, K Pedro, A Peterman, K Rossato, A Skuja, J Temple, MB Tonjes, SC Tonwar, E Twedt, G Bauer, J Bendavid, W Busza, E Butz, IA Cali, M Chan, V Dutta, G Gomez Ceballos, M Goncharov, KA Hahn, Y Kim, M Klute, W Li, PD Luckey, T Ma, S Nahn, C Paus, D Ralph, C Roland, G Roland, M Rudolph, GSF Stephans, F Stöckli, K Sumorok, K Sung, D Velicanu, EA Wenger, R Wolf, B Wyslouch, S Xie, M Yang, Y Yilmaz, AS Yoon, M Zanetti, SI Cooper, P Cushman, B Dahmes, A De Benedetti, G Franzoni, A Gude, J Haupt, SC Kao, K Klapoetke, Y Kubota, J Mans, N Pastika, R Rusack, M Sasseville, A Singovsky, N Tambe, J Turkewitz, LM Cremaldi, R Kroeger, L Perera, R Rahmat, DA Sanders, E Avdeeva, K Bloom, S Bose, J Butt, DR Claes, A Dominguez, M Eads, P Jindal, J Keller, I Kravchenko, J Lazo-Flores, H Malbouisson, S Malik, GR Snow, U Baur, A Godshalk, I Iashvili, S Jain, A Kharchilava, A Kumar, SP Shipkowski, K Smith, G Alverson, E Barberis, D Baumgartel, M Chasco, J Haley, D Trocino, D Wood, J Zhang, A Anastassov, A Kubik, N Mucia, N Odell, RA Ofierzynski, B Pollack, A Pozdnyakov, M Schmitt, S Stoynev, M Velasco, S Won, L Antonelli, D Berry, A Brinkerhoff, M Hildreth, C Jessop, DJ Karmgard, J Kolb, K Lannon, W Luo, S Lynch, N Marinelli, DM Morse, T Pearson, R Ruchti, J Slaunwhite, N Valls, J Warchol, M Wayne, M Wolf, J Ziegler, B Bylsma, LS Durkin, C Hill, R Hughes, P Killewald, K Kotov, TY Ling, D Puigh, M Rodenburg, C Vuosalo, G Williams, BL Winer, N Adam, E Berry, P Elmer, D Gerbaudo, V Halyo, P Hebda, J Hegeman, A Hunt, E Laird, D Lopes Pegna, P Lujan, D Marlow, T Medvedeva, M Mooney, J Olsen, P Piroué, X Quan, A Raval, H Saka, D Stickland, C Tully, JS Werner, A Zuranski, JG Acosta, E Brownson, XT Huang, A Lopez, H Mendez, S Oliveros, JE Ramirez Vargas, A Zatserklyaniy, E Alagoz, VE Barnes, D Benedetti, G Bolla, D Bortoletto, M De Mattia, A Everett, Z Hu, M Jones, O Koybasi, M Kress, AT Laasanen, N Leonardo, V Maroussov, P Merkel, DH Miller, N Neumeister, I Shipsey, D Silvers, A Svyatkovskiy, M Vidal Marono, HD Yoo, J Zablocki, Y Zheng, S Guragain, N Parashar, A Adair, C Boulahouache, V Cuplov, KM Ecklund, FJM Geurts, BP Padley, R Redjimi, J Roberts, J Zabel, B Betchart, A Bodek, YS Chung, R Covarelli, P de Barbaro, R Demina, Y Eshaq, A Garcia-Bellido, P Goldenzweig, Y Gotra, J Han, A Harel, S Korjenevski, DC Miner, D Vishnevskiy, M Zielinski, A Bhatti, R Ciesielski, L Demortier, K Goulianos, G Lungu, S Malik, C Mesropian, S Arora, A Barker, JP Chou, C Contreras-Campana, E Contreras-Campana, D Duggan, D Ferencek, Y Gershtein, R Gray, E Halkiadakis, D Hidas, D Hits, A Lath, S Panwalkar, M Park, R Patel, V Rekovic, J Robles, K Rose, S Salur, C Seitz, S Somalwar, R Stone, S Thomas, P Thomassen, M Walker, G Cerizza, M Hollingsworth, S Spanier, ZC Yang, A York, R Eusebi, W Flanagan, J Gilmore, T Kamon, V Khotilovich, R Montalvo, I Osipenkov, Y Pakhotin, A Perloff, J Roe, A Safonov, T Sakuma, S Sengupta, I Suarez, A Tatarinov, D Toback, N Akchurin, J Damgov, PR Dudero, C Jeong, K Kovitanggoon, SW Lee, T Libeiro, Y Roh, I Volobouev, E Appelt, D Engh, C Florez, S Greene, A Gurrola, W Johns, P Kurt, C Maguire, A Melo, P Sheldon, B Snook, S Tuo, J Velkovska, MW Arenton, M Balazs, S Boutle, B Cox, B Francis, J Goodell, R Hirosky, A Ledovskoy, C Lin, C Neu, J Wood, R Yohay, S Gollapinni, R Harr, PE Karchin, C Kottachchi Kankanamge Don, P Lamichhane, A Sakharov, M Anderson, M Bachtis, D Belknap, L Borrello, D Carlsmith, M Cepeda, S Dasu, L Gray, KS Grogg, M Grothe, R Hall-Wilton, M Herndon, A Hervé, P Klabbers, J Klukas, A Lanaro, C Lazaridis, J Leonard, R Loveless, A Mohapatra, I Ojalvo, GA Pierro, I Ross, A Savin, WH Smith, J SwansonEvidence for the charmless annihilation decay mode Bs0→π +π-
Physical Review Letters 108:21 (2012)
Authors:
T Aaltonen, B Álvarez González, 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'erricoAbstract:
We search for annihilation decay modes of neutral b mesons into pairs of charmless charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 6fb-1 of integrated luminosity, we obtain the first evidence for the Bs0→π+π - decay, with a significance of 3.7σ, and a measured branching ratio B(Bs0→π+π-)=(0.57±0.15(stat) ±0.10(syst))×10-6. A search for the B0→K +K- mode in the same sample yields a significance of 2.0σ, and a central value estimate B(B0→K+K -)=(0.23±0.10(stat)±0.10(syst))×10-6. © 2012 American Physical Society.Search for a heavy particle decaying to a top quark and a light quark in pp̄ collisions at √s=1.96TeV
Physical Review Letters 108:21 (2012)
Authors:
T Aaltonen, J Adelman, B Álvarez González, 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 DevotoAbstract:
We present a search for a new heavy particle X produced in association with a top quark, pp̄→t(X→t̄q) or pp̄→t̄(X̄ →tq̄), where q stands for up quarks and down quarks. Such a particle may explain the recent anomalous measurements of top-quark forward-backward asymmetry. If the light-flavor quark (q) is reconstructed as a jet (j), this gives a t̄+j or t+j resonance in tt̄+jet events, a previously unexplored experimental signature. In a sample of events with exactly one lepton, missing transverse momentum and at least five jets, corresponding to an integrated luminosity of 8.7fb-1 collected by the CDF II detector, we find the data to be consistent with the standard model. We set cross-section upper limits on the production (pp̄→Xt or X̄t̄) at 95% confidence level from 0.61 pb to 0.02 pb for X masses ranging from 200GeV/c2 to 800GeV/c2, respectively. © 2012 American Physical Society.Measurement of the masses and widths of the bottom baryons Σb± and Σb*±
Physical Review D - Particles, Fields, Gravitation and Cosmology 85:9 (2012)
Authors:
T Aaltonen, 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 CantoAbstract:
Using data from pp̄ collisions at √s=1.96TeV recorded by the CDF II detector at the Fermilab Tevatron, we present improved measurements of the masses and first measurements of natural widths of the four bottom baryon resonance states Σb+, Σb*+ and Σb-, Σb*-. These states are fully reconstructed in their decay modes to Λb0π ± where Λb0→Λc+π - with Λc+→pK -π +. The analysis is based on a data sample corresponding to an integrated luminosity of 6.0fb -1 collected by an online event selection based on tracks displaced from the pp̄ interaction point. © 2012 American Physical Society.Study of substructure of high transverse momentum jets produced in proton-antiproton collisions at √s=1.96TeV
Physical Review D - Particles, Fields, Gravitation and Cosmology 85:9 (2012)