Title: | Search for top-squark pairs decaying into Higgs or Z bosons in pp collisions at √s=8 TeV |
Authors: | Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Erö, J Fabjan, C Friedl, M Frühwirth, R Ghete, VM Hernandez, JM Nash, D Orimoto, T Trocino, D Wood, D Zhang, J Hahn, KA Kubik, A Mucia, N Odell, N Liko, D Josa, MI Wang, Z Pollack, B Pozdnyakov, A Schmitt, M Stoynev, S Sung, K Velasco, M Won, S Brinkerhoff, A Chan, KM Merino, G Drozdetskiy, A Asawatangtrakuldee, C Hildreth, M Jessop, C Karmgard, DJ Kellams, N Lannon, K Luo, W Lynch, S Marinelli, N Navarro De Martino, E Pearson, T Planer, M Ban, Y Ruchti, R Valls, N Wayne, M Wolf, M Woodard, A Antonelli, L Brinson, J Pérez-Calero Yzquierdo, A Bylsma, B Durkin, LS Flowers, S Guo, Y Hill, C Hughes, R Kotov, K Ling, TY Puigh, D Rodenburg, M Puerta Pelayo, J Smith, G Vuosalo, C Winer, BL Wolfe, H Li, Q Wulsin, HW Berry, E Driga, O Elmer, P Hebda, P Quintario Olmeda, A Hunt, A Koay, SA Lujan, P Marlow, D Medvedeva, T Li, W Mooney, M Olsen, J Piroué, P Quan, X Redondo, I Saka, H Stickland, D Tully, C Werner, JS Zenz, SC Zuranski, A Liu, S Brownson, E Mendez, H Ramirez Vargas, JE Romero, L Alagoz, E Barnes, VE Benedetti, D Bolla, G Bortoletto, D De Mattia, M Everett, A Mao, Y Hu, Z Jha, MK Soares, MS Jones, M Jung, K Kress, M Leonardo, N Lopes Pegna, D Maroussov, V Merkel, P Miller, DH Qian, SJ Neumeister, N Tytgat, M Da Silveira, GG Radburn-Smith, BC Shi, X Shipsey, I Silvers, D Svyatkovskiy, A Wang, F Xie, W Xu, L Yoo, HD Wang, D Albajar, C Zablocki, J Zheng, Y Parashar, N Stupak, J Adair, A Akgun, B Ecklund, KM Geurts, FJM Li, W Michlin, B de Trocóniz, JF Mikulec, I Zhang, L Padley, BP Redjimi, R Roberts, J Zabel, J Betchart, B Bodek, A Covarelli, R de Barbaro, P Missiroli, M Demina, R Eshaq, Y Zou, W Ferbel, T Garcia-Bellido, A Goldenzweig, P Han, J Harel, A Khukhunaishvili, A Miner, DC Brun, H Petrillo, G Vishnevskiy, D Ciesielski, R Avila, C Demortier, L Goulianos, K Lungu, G Mesropian, C Arora, S Barker, A Cuevas, J Chou, JP Contreras-Campana, C Contreras-Campana, E Duggan, D Chaparro Sierra, LF Ferencek, D Gershtein, Y Gray, R Halkiadakis, E Hidas, D Fernandez Menendez, J Lath, A Panwalkar, S Park, M Patel, R Rekovic, V Florez, C Salur, S Schnetzer, S Seitz, C Somalwar, S Folgueras, S Stone, R Thomas, S Thomassen, P Walker, M Rose, K Spanier, S Gomez, JP York, A Bouhali, O Eusebi, R Gonzalez Caballero, I Flanagan, W Gilmore, J Kamon, T Khotilovich, V Krutelyov, V Montalvo, R Osipenkov, I Gomez Moreno, B Pakhotin, Y Perloff, A Lloret Iglesias, L Roe, J Rose, A Safonov, A Sakuma, T Suarez, I Tatarinov, A Akchurin, N Cowden, C Sanabria, JC Damgov, J Uvarov, L Brochero Cifuentes, JA Dragoiu, C Dudero, PR Faulkner, J Kovitanggoon, K Kunori, S Lee, SW Libeiro, T Volobouev, I Appelt, E Godinovic, N Hartl, C Delannoy, AG Greene, S Gurrola, A Johns, W Maguire, C Mao, Y Melo, A Sharma, M Sheldon, P Snook, B Delaere, C Lelas, D Tuo, S Velkovska, J Arenton, MW Boutle, S Cox, B Francis, B Goodell, J Hirosky, R Ledovskoy, A Cabrillo, IJ Li, H Rabady, D Polic, D Lin, C Neu, C Wood, J Gollapinni, S Harr, R Karchin, PE Kottachchi Kankanamge Don, C Calderon, A Lamichhane, P Sturdy, J Belknap, DA Puljak, I Carlsmith, D Cepeda, M Dasu, S Duric, S Friis, E Hall-Wilton, R Duarte Campderros, J Herndon, M Hervé, A Klabbers, P Klukas, J Antunovic, Z Lanaro, A Lazaridis, C Levine, A Loveless, R Mohapatra, A Fernandez, M Ojalvo, I Perry, T Pierro, GA Polese, G Ross, I Kovac, M Sarangi, T Savin, A Smith, WH Woods, N Gomez, G Brigljevic, V Kadija, K Luetic, J Mekterovic, D Sudic, L Attikis, A Rahbaran, B Mavromanolakis, G Mousa, J Nicolaou, C Graziano, A Ptochos, F Razis, PA Bodlak, M Finger, M Finger, M Assran, Y Ellithi Kamel, A Rohringer, H Mahmoud, MA Radi, A Lopez Virto, A Kadastik, M Murumaa, M Raidal, M Tiko, A Eerola, P Fedi, G Voutilainen, M Härkönen, J Schöfbeck, R Karimäki, V Vavilov, S Marco, J Kinnunen, R Kortelainen, MJ Lampén, T Lassila-Perini, K Lehti, S Lindén, T Luukka, P Mäenpää, T Peltola, T Strauss, J Marco, R Tuominen, E Tuominiemi, J Tuovinen, E Wendland, L Tuuva, T Besancon, M Couderc, F Dejardin, M Denegri, D Fabbro, B Martinez Rivero, C Taurok, A Faure, JL Favaro, C Ferri, F Ganjour, S Givernaud, A Gras, P Hamel de Monchenault, G Jarry, P Locci, E du Pree, T Malcles, J Treberer-Treberspurg, W Nayak, A Rander, J Rosowsky, A Titov, M Baffioni, S Beaudette, F Busson, P Charlot, C Matorras, F Dahms, T Dalchenko, M Waltenberger, W Dobrzynski, L Filipovic, N Florent, A Granier de Cassagnac, R Mastrolorenzo, L Miné, P Mironov, C Munoz Sanchez, FJ Naranjo, IN Nguyen, M Ochando, C Wulz, C-E Paganini, P Salerno, R Sauvan, JB Sirois, Y Veelken, C Yilmaz, Y Piedra Gomez, J Zabi, A Agram, J-L Andrea, J Aubin, A Mossolov, V Bloch, D Brom, J-M Chabert, EC Collard, C Conte, E Rodrigo, T Fontaine, J-C Gelé, D Goerlach, U Goetzmann, C Le Bihan, A-C Shumeiko, N Van Hove, P Gadrat, S Beauceron, S Beaupere, N Rodríguez-Marrero, AY Boudoul, G Brochet, S Carrillo Montoya, CA Chasserat, J Chierici, R Contardo, D Suarez Gonzalez, J Depasse, P El Mamouni, H Fan, J Ruiz-Jimeno, A Fay, J Gascon, S Gouzevitch, M Ille, B Kurca, T Lethuillier, M Mirabito, L Alderweireldt, S Perries, S Ruiz Alvarez, JD Vorobyev, A Scodellaro, L Sabes, D Sgandurra, L Sordini, V Vander Donckt, M Verdier, P Viret, S Xiao, H Tsamalaidze, Z Bansal, M Autermann, C Vila, I Beranek, S Bontenackels, M Calpas, B Edelhoff, M Feld, L Hindrichs, O Klein, K Ostapchuk, A Perieanu, A Bansal, S Vilar Cortabitarte, R Raupach, F Sammet, J Schael, S Sprenger, D Weber, H Wittmer, B Zhukov, V Ata, M Caudron, J Dietz-Laursonn, E Abbaneo, D Cornelis, T Duchardt, D Erdmann, M Fischer, R Güth, A Hebbeker, T Heidemann, C Hoepfner, K Klingebiel, D Knutzen, S Favart, D Kreuzer, P De Wolf, EA Merschmeyer, M Meyer, A Olschewski, M Padeken, K Papacz, P Reithler, H Schmitz, SA Sonnenschein, L Auffray, E Teyssier, D Thüer, S Janssen, X Weber, M Cherepanov, V Erdogan, Y Flügge, G Geenen, H Geisler, M Haj Ahmad, W Auzinger, G Hoehle, F Kargoll, B Kress, T Knutsson, A Kuessel, Y Lingemann, J Nowack, A Nugent, IM Perchalla, L Pooth, O Bachtis, M Stahl, A Asin, I Bartosik, N Behr, J Luyckx, S Behrenhoff, W Behrens, U Bell, AJ Bergholz, M Bethani, A Baillon, P Borras, K Burgmeier, A Cakir, A Calligaris, L Campbell, A Ochesanu, S Choudhury, S Costanza, F Diez Pardos, C Dooling, S Ball, AH Dorland, T Eckerlin, G Eckstein, D Eichhorn, T Flucke, G Garay Garcia, J Roland, B Geiser, A Gunnellini, P Hauk, J Vorobyev, A Barney, D Hellwig, G Hempel, M Horton, D Jung, H Kasemann, M Katsas, P Kieseler, J Rougny, R Kleinwort, C Krücker, D Benaglia, A Lange, W Leonard, J Lipka, K Lobanov, A Lohmann, W Lutz, B Mankel, R Marfin, I Van De Klundert, M Melzer-Pellmann, I-A Bendavid, J Meyer, AB Mnich, J Mussgiller, A Naumann-Emme, S Novgorodova, O Nowak, F Ntomari, E Perrey, H Pitzl, D Van Haevermaet, H Benhabib, L Placakyte, R Raspereza, A Ribeiro Cipriano, PM Ron, E Sahin, M Salfeld-Nebgen, J Saxena, P Schmidt, R Schoerner-Sadenius, T Schröder, M Benitez, JF Van Mechelen, P Spannagel, S Vargas Trevino, ADR Walsh, R Wissing, C Aldaya Martin, M Blobel, V Centis Vignali, M Erfle, J Garutti, E Forthomme, L Goebel, K Van Remortel, N Görner, M Gosselink, M Haller, J Höing, RS Kirschenmann, H Klanner, R Kogler, R Lange, J Bernet, C Lapsien, T Lenz, T Van Spilbeeck, A Marchesini, I Ott, J Peiffer, T Pietsch, N Rathjens, D Sander, C Schettler, H Bianchi, G Schleper, P Schlieckau, E Schmidt, A Blekman, F Seidel, M Sibille, J Sola, V Stadie, H Steinbrück, G Troendle, D Bloch, P Usai, E Vanelderen, L Barth, C Baus, C Blyweert, S Berger, J Böser, C Butz, E Chwalek, T De Boer, W Bocci, A Descroix, A Dierlamm, A Feindt, M Frensch, F Hartmann, F D'Hondt, J Hauth, T Husemann, U Katkov, I Kornmayer, A Andreev, Y Bonato, A Kuznetsova, E Lobelle Pardo, P Mozer, MU Müller, T Nürnberg, A Quast, G Daci, N Rabbertz, K Ratnikov, F Röcker, S Bondu, O Simonis, HJ Stober, FM Ulrich, R Wagner-Kuhr, J Wayand, S Weiler, T Wolf, R Heracleous, N Anagnostou, G Daskalakis, G Botta, C Geralis, T Giakoumopoulou, VA Kyriakis, A Loukas, D Markou, A Markou, C Psallidas, A Topsis-Giotis, I Kalogeropoulos, A Panagiotou, A Breuker, H Saoulidou, N Stiliaris, E Aslanoglou, X Evangelou, I Flouris, G Foudas, C Kokkas, P Manthos, N Papadopoulos, I Keaveney, J Camporesi, T Paradas, E Bencze, G Hajdu, C Hidas, P Horvath, D Sikler, F Veszpremi, V Vesztergombi, G Zsigmond, AJ Beni, N Cerminara, G Kim, TJ Czellar, S Karancsi, J Molnar, J Palinkas, J Szillasi, Z Raics, P Trocsanyi, ZL Ujvari, B Swain, SK Giammanco, A Beri, SB Lowette, S Bhatnagar, V Dhingra, N Gupta, R Kalsi, AK Kaur, M Mittal, M Nishu, N Singh, JB Christiansen, T Kumar, A Kumar, A Maes, M Ahuja, S Bhardwaj, A Choudhary, BC Malhotra, S Naimuddin, M Ranjan, K Sharma, V Colafranceschi, S Banerjee, S Bhattacharya, S Chatterjee, K Olbrechts, A Dutta, S Gomber, B Jain, S Jain, S Khurana, R Modak, A D'Alfonso, M Mukherjee, S Roy, D Sarkar, S Sharan, M Python, Q Abdulsalam, A Dutta, D Kailas, S Kumar, V Mohanty, AK 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G Cuffiani, M Dallavalle, GM Fabbri, F Fanfani, A Fasanella, D Dupont-Sagorin, N Giacomelli, P Grandi, C Clerbaux, B Guiducci, L Marcellini, S Masetti, G Montanari, A Navarria, FL Perrotta, A Primavera, F Elliott-Peisert, A Rossi, AM Rovelli, T Siroli, GP De Lentdecker, G Tosi, N Travaglini, R Albergo, S Cappello, G Chiorboli, M Costa, S Gninenko, S Eugster, J Giordano, F Potenza, R Tricomi, A Tuve, C Dobur, D Barbagli, G Ciulli, V Civinini, C D'Alessandro, R Focardi, E Franzoni, G Gallo, E Gonzi, S Gori, V Lenzi, P Meschini, M Favart, L Paoletti, S Sguazzoni, G Tropiano, A Benussi, L Funk, W Bianco, S Fabbri, F Piccolo, D Ferro, F Lo Vetere, M Robutti, E Gay, APR Tosi, S Dinardo, ME Fiorendi, S Giffels, M Gennai, S Gerosa, R Ghezzi, A Govoni, P Lucchini, MT Malvezzi, S Manzoni, RA Grebenyuk, A Martelli, A Marzocchi, B Gigi, D Menasce, D Moroni, L Paganoni, M Pedrini, D Ragazzi, S Redaelli, N Tabarelli de Fatis, T Buontempo, S Léonard, A Cavallo, N Gill, K Di Guida, S Fabozzi, F Iorio, AOM Lista, L Meola, S Merola, M Paolucci, P Azzi, P Bacchetta, N Mohammadi, A Giordano, D Branca, A Carlin, R Checchia, P Dall'Osso, M Dorigo, T Galanti, M Gasparini, F Gasparini, U Giubilato, P Gonella, F Girone, M Perniè, L Gozzelino, A Kanishchev, K Lacaprara, S Margoni, M Meneguzzo, AT Montecassiano, F Pazzini, J Pozzobon, N Ronchese, P Jez, P Simonetto, F Reis, T Torassa, E Tosi, M Vanini, S Zotto, P Zucchetta, A Gabusi, M Ratti, SP Riccardi, C Glege, F Salvini, P Vitulo, P Seva, T Biasini, M Bilei, GM Ciangottini, D Fanò, L Lariccia, P Mantovani, G Menichelli, M Golubev, N Guida, R Romeo, F Saha, A Santocchia, A Thomas, L Spiezia, A Androsov, K Azzurri, P Bagliesi, G Bernardini, J Boccali, T Gundacker, S Broccolo, G Castaldi, R Ciocci, MA Dell'Orso, R Vander Velde, C Donato, S Fiori, F Foà, L Giassi, A Grippo, MT Guthoff, M Ligabue, F Lomtadze, T Martini, L Messineo, A Moon, CS Vanlaer, P Palla, F Rizzi, A Savoy-Navarro, A Serban, AT Hammer, J Spagnolo, P Squillacioti, P 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Dildick, S Park, H Sakharov, A Son, DC Kim, JY Song, S Choi, S Lecoq, P Gyun, D Hong, B Jo, M Kim, H Fagot, A Kim, Y Lee, B Lee, KS Park, SK Roh, Y Lourenço, C Choi, M Kim, JH Park, IC Park, S Ryu, G Garcia, G Ryu, MS Choi, Y Choi, YK Goh, J Magini, N Kwon, E Lee, J Seo, H Yu, I Juodagalvis, A Komaragiri, JR Klein, B Castilla-Valdez, H De La Cruz-Burelo, E Heredia-de La Cruz, I Malgeri, L Lopez-Fernandez, R Sanchez-Hernandez, A Carrillo Moreno, S Vazquez Valencia, F Pedraza, I Salazar Ibarguen, HA Casimiro Linares, E Mccartin, J Morelos Pineda, A Krofcheck, D Mannelli, M Butler, PH Reucroft, S Ahmad, A Ahmad, M Hassan, Q Hoorani, HR Khalid, S Khan, WA Ocampo Rios, AA Khurshid, T Masetti, L Shah, MA Shoaib, M Bialkowska, H Bluj, M Boimska, B Frueboes, T Górski, M Kazana, M Nawrocki, K Ryckbosch, D Meijers, F Romanowska-Rybinska, K Szleper, M Zalewski, P Brona, G Bunkowski, K Cwiok, M Dominik, W Doroba, K Kalinowski, A Konecki, M Mersi, S Salva Diblen, S Krolikowski, J Misiura, M Olszewski, M Wolszczak, W Bargassa, P Beirão Da Cruz E Silva, C Faccioli, P Ferreira Parracho, PG Gallinaro, M Krasnikov, N Lemaitre, V Nguyen, F Sigamani, M Rodrigues Antunes, J Seixas, J Varela, J Vischia, P Afanasiev, S Bunin, P Golutvin, I Gorbunov, I Meschi, E Karjavin, V Konoplyanikov, V Strobbe, N Kozlov, G Lanev, A Malakhov, A Matveev, V Moisenz, P Palichik, V Perelygin, V Moortgat, F Shmatov, S Skatchkov, N Smirnov, V Thyssen, F Yuldashev, BS Zarubin, A Golovtsov, V Ivanov, Y Kim, V Levchenko, P Morovic, S Murzin, V Oreshkin, V Smirnov, I Sulimov, V Mulders, M Musella, P Orsini, L Pape, L Perez, E Perrozzi, L Yazgan, E Petrilli, A Liao, J Petrucciani, G Pfeiffer, A Pierini, M Pimiä, M Piparo, D Plagge, M Racz, A Rolandi, G Pashenkov, A Rovere, M Sakulin, H Hörmann, N Nuttens, C Schäfer, C Schwick, C Sekmen, S Sharma, A Siegrist, P Silva, P Tlisov, D Simon, M Sphicas, P Spiga, D Steggemann, J Pagano, D Stieger, B Stoye, M Treille, D Tsirou, A Veres, GI Toropin, A Vlimant, JR Wardle, N Wöhri, HK Zeuner, WD Bertl, W Perrini, L Deiters, K Erdmann, W Horisberger, R Ingram, Q Epshteyn, V Kaestli, HC König, S Kotlinski, D Langenegger, U Renker, D Rohe, T Pin, A Bachmair, F Bäni, L Bianchini, L Gavrilov, V Bortignon, P Buchmann, MA Casal, B Chanon, N Deisher, A Dissertori, G Dittmar, M Piotrzkowski, K Donegà, M Dünser, M Lychkovskaya, N Eller, P Grab, C Hits, D Lustermann, W Mangano, B Marini, AC Martinez Ruiz del Arbol, P Meister, D Popov, A Mohr, N Popov, V Nägeli, C Nef, P Nessi-Tedaldi, F Pandolfi, F Pauss, F Peruzzi, M Quittnat, M Rebane, L Ronga, FJ Quertenmont, L Safronov, G Rossini, M Starodumov, A Takahashi, M Theofilatos, K Wallny, R Weber, HA Amsler, C Canelli, MF Chiochia, V De Cosa, A Semenov, S Selvaggi, M Hinzmann, A Hreus, T Ivova Rikova, M Kilminster, B Millan Mejias, B Ngadiuba, J Robmann, P Snoek, H Taroni, S Spiridonov, A Verzetti, M Vidal Marono, M Yang, Y Cardaci, M Chen, KH Ferro, C Kuo, CM Lin, W Lu, YJ Volpe, R Zaganidis, N Yu, SS Chang, 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Keywords: | CMS;Higgs;Stop;SUSY |
Issue Date: | 2014 |
Publisher: | Elsevier |
Citation: | Physics Letters B, 736: 371-397, (7 September 2014) |
Abstract: | A search for supersymmetry through the direct pair production of top squarks, with Higgs (H) or Z bosons in the decay chain, is performed using a data sample of proton-proton collisions at s=8 TeV collected in 2012 with the CMS detector at the LHC. The sample corresponds to an integrated luminosity of 19.5 fb-1. The search is performed using a selection of events containing leptons and bottom-quark jets. No evidence for a significant excess of events over the standard model background prediction is observed. The results are interpreted in the context of simplified supersymmetric models with pair production of a heavier top-squark mass eigenstate t~2 decaying to a lighter top-squark mass eigenstate t~1 via either t~2→Ht~1 or t~2→Zt~1, followed in both cases by t~1→tχ~10, where χ~10 is an undetected, stable, lightest supersymmetric particle. The interpretation is performed in the region where the mass difference between the t~1 and χ~10 states is approximately equal to the top-quark mass (mt~1-mχ~10≃mt), which is not probed by searches for direct t~1 squark pair production. The analysis excludes top squarks with masses mt~2<575 GeV and mt~1<400 GeV at a 95% confidence level. |
Description: | This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Funded by SCOAP3. |
URI: | http://www.sciencedirect.com/science/article/pii/S0370269314005553 http://bura.brunel.ac.uk/handle/2438/9312 |
DOI: | http://dx.doi.org/10.1016/j.physletb.2014.07.053 |
ISSN: | 0370-2693 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers
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