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Inclusive J/psi production in pp collisions at sqrt(s) = 2.76 TeV

ArXiv 1203.3641 (2012)

Authors:

ALICE Collaboration, B Abelev, J Adam, D Adamova, AM Adare, MM Aggarwal, G Aglieri Rinella, AG Agocs, A Agostinelli, S Aguilar Salazar, Z Ahammed, A Ahmad Masoodi, N Ahmad, SU Ahn, A Akindinov, D Aleksandrov, B Alessandro, R Alfaro Molina, A Alici, A Alkin, E Almaraz Avina, J Alme, T Alt, V Altini, S Altinpinar, I Altsybeev, C Andrei, A Andronic, V Anguelov, J Anielski, C Anson, T Anticic, F Antinori, P Antonioli, L Aphecetche, H Appelshauser, N Arbor, S Arcelli, A Arend, N Armesto, R Arnaldi, T Aronsson, IC Arsene, M Arslandok, A Asryan, A Augustinus, R Averbeck, TC Awes, J Aysto, MD Azmi, M Bach, A Badala, YW Baek, R Bailhache, R Bala, R Baldini Ferroli, A Baldisseri, A Baldit, F Baltasar Dos Santos Pedrosa, J Ban, RC Baral, R Barbera, F Barile, GG Barnafoldi, LS Barnby, V Barret, J Bartke, M Basile, N Bastid, B Bathen, G Batigne, B Batyunya, C Baumann, IG Bearden, H Beck, I Belikov, F Bellini, R Bellwied, E Belmont-Moreno, G Bencedi, S Beole, I Berceanu, A Bercuci, Y Berdnikov, D Berenyi, C Bergmann, D Berzano, L Betev, A Bhasin, AK Bhati, L Bianchi, N Bianchi, C Bianchin, J Bielcik, J Bielcikova, S Bjelogrlic, F Blanco, F Blanco, D Blau, C Blume, M Boccioli, N Bock, A Bogdanov, H Boggild, M Bogolyubsky, L Boldizsar, M Bombara, J Book, H Borel, A Borissov, S Bose, F Bossu, M Botje, S Bottger, B Boyer, E Braidot, P Braun-Munzinger, M Bregant, T Breitner, TA Browning, M Broz, R Brun, E Bruna, GE Bruno, D Budnikov, H Buesching, S Bufalino, K Bugaiev, O Busch, Z Buthelezi, D Caballero Orduna, D Caffarri, X Cai, H Caines, E Calvo Villar, P Camerini, V Canoa Roman, G Cara Romeo, W Carena, F Carena, N Carlin Filho, F Carminati, CA Carrillo Montoya, A Casanova Diaz, J Castillo Castellanos, JF Castillo Hernandez, EAR Casula, V Catanescu, C Cavicchioli, J Cepila, P Cerello, B Chang, S Chapeland, JL Charvet, S Chattopadhyay, S Chattopadhyay, I Chawla, M Cherney, C Cheshkov, B Cheynis, E Chiavassa, V Chibante Barroso, DD Chinellato, P Chochula, M Chojnacki, P Christakoglou, CH Christensen, P Christiansen, T Chujo, SU Chung, C Cicalo, L Cifarelli, F Cindolo, J Cleymans, F Coccetti, F Colamaria, D Colella, G Conesa Balbastre, Z Conesa del Valle, P Constantin, G Contin, JG Contreras, TM Cormier, Y Corrales Morales, P Cortese, I Cortes Maldonado, MR Cosentino, F Costa, ME Cotallo, E Crescio, P Crochet, E Cruz Alaniz, E Cuautle, L Cunqueiro, A Dainese, HH Dalsgaard, A Danu, K Das, I Das, D Das, A Dash, S Dash, S De, GOV de Barros, A De Caro, G de Cataldo, J de Cuveland, A De Falco, D De Gruttola, H Delagrange, E Del Castillo Sanchez, A Deloff, V Demanov, N De Marco, E Denes, S De Pasquale, A Deppman, GD Erasmo, R de Rooij, MA Diaz Corchero, D Di Bari, T Dietel, C Di Giglio, S Di Liberto, A Di Mauro, P Di Nezza, R Divia, O Djuvsland, A Dobrin, T Dobrowolski, I Dominguez, B Donigus, O Dordic, O Driga, AK Dubey, L Ducroux, P Dupieux, AK Dutta Majumdar, MR Dutta Majumdar, D Elia, D Emschermann, H Engel, HA Erdal, B Espagnon, M Estienne, S Esumi, D Evans, G Eyyubova, D Fabris, J Faivre, D Falchieri, A Fantoni, M Fasel, R Fearick, A Fedunov, D Fehlker, L Feldkamp, D Felea, G Feofilov, A Fernandez Tellez, EG Ferreiro, A Ferretti, R Ferretti, J Figiel, MAS Figueredo, S Filchagin, D Finogeev, FM Fionda, EM Fiore, M Floris, S Foertsch, P Foka, S Fokin, E Fragiacomo, M Fragkiadakis, U Frankenfeld, U Fuchs, C Furget, M Fusco Girard, JJ Gaardhoje, M Gagliardi, A Gago, M Gallio, DR Gangadharan, P Ganoti, C Garabatos, E Garcia-Solis, I Garishvili, J Gerhard, M Germain, C Geuna, A Gheata, M Gheata, B Ghidini, P Ghosh, P Gianotti, MR Girard, P Giubellino, E Gladysz-Dziadus, P Glassel, R Gomez, LH Gonzalez-Trueba, P Gonzalez-Zamora, S Gorbunov, A Goswami, S Gotovac, V Grabski, LK Graczykowski, R Grajcarek, A Grelli, A Grigoras, C Grigoras, V Grigoriev, A Grigoryan, S Grigoryan, B Grinyov, N Grion, P Gros, JF Grosse-Oetringhaus, J-Y Grossiord, R Grosso, F Guber, R Guernane, C Guerra Gutierrez, B Guerzoni, M Guilbaud, K Gulbrandsen, T Gunji, A Gupta, R Gupta, H Gutbrod, O Haaland, C Hadjidakis, M Haiduc, H Hamagaki, G Hamar, BH Han, LD Hanratty, A Hansen, Z Harmanova, JW Harris, M Hartig, D Hasegan, D Hatzifotiadou, A Hayrapetyan, ST Heckel, M Heide, H Helstrup, A Herghelegiu, G Herrera Corral, N Herrmann, KF Hetland, B Hicks, PT Hille, B Hippolyte, T Horaguchi, Y Hori, P Hristov, I Hrivnacova, M Huang, S Huber, TJ Humanic, DS Hwang, R Ichou, R Ilkaev, I Ilkiv, M Inaba, E Incani, GM Innocenti, PG Innocenti, M Ippolitov, M Irfan, C Ivan, V Ivanov, A Ivanov, M Ivanov, O Ivanytskyi, A Jacholkowski, PM Jacobs, L Jancurova, HJ Jang, S Jangal, MA Janik, R Janik, PHSY Jayarathna, S Jena, RT Jimenez Bustamante, L Jirden, PG Jones, H Jung, A Jusko, AB Kaidalov, V Kakoyan, S Kalcher, P Kalinak, M Kalisky, T Kalliokoski, A Kalweit, K Kanaki, JH Kang, V Kaplin, A Karasu Uysal, O Karavichev, T Karavicheva, E Karpechev, A Kazantsev, U Kebschull, R Keidel, MM Khan, SA Khan, P Khan, A Khanzadeev, Y Kharlov, B Kileng, M Kim, JS Kim, DJ Kim, T Kim, B Kim, S Kim, SH Kim, DW Kim, JH Kim, S Kirsch, I Kisel, S Kiselev, A Kisiel, JL Klay, J Klein, C Klein-Bosing, M Kliemant, A Kluge, ML Knichel, AG Knospe, K Koch, MK Kohler, A Kolojvari, V Kondratiev, N Kondratyeva, A Konevskikh, A Korneev, C Kottachchi Kankanamge Don, R Kour, M Kowalski, S Kox, G Koyithatta Meethaleveedu, J Kral, I Kralik, F Kramer, I Kraus, T Krawutschke, M Krelina, M Kretz, M Krivda, F Krizek, M Krus, E Kryshen, M Krzewicki, Y Kucheriaev, C Kuhn, PG Kuijer, P Kurashvili, A Kurepin, AB Kurepin, A Kuryakin, S Kushpil, V Kushpil, H Kvaerno, MJ Kweon, Y Kwon, P Ladron de Guevara, I Lakomov, R Langoy, C Lara, A Lardeux, P La Rocca, C Lazzeroni, R Lea, Y Le Bornec, SC Lee, KS Lee, F Lefevre, J Lehnert, L Leistam, M Lenhardt, V Lenti, H Leon, I Leon Monzon, H Leon Vargas, P Levai, J Lien, R Lietava, S Lindal, V Lindenstruth, C Lippmann, MA Lisa, L Liu, PI Loenne, VR Loggins, V Loginov, S Lohn, D Lohner, C Loizides, KK Loo, X Lopez, E Lopez Torres, G Lovhoiden, X-G Lu, P Luettig, M Lunardon, J Luo, G Luparello, L Luquin, C Luzzi, K Ma, R Ma, DM Madagodahettige-Don, A Maevskaya, M Mager, DP Mahapatra, A Maire, M Malaev, I Maldonado Cervantes, L Malinina, D Mal'Kevich, P Malzacher, A Mamonov, L Manceau, L Mangotra, V Manko, F Manso, V Manzari, Y Mao, M Marchisone, J Mares, GV Margagliotti, A Margotti, A Marin, CA Marin Tobon, C Markert, I Martashvili, P Martinengo, MI Martinez, A Martinez Davalos, G Martinez Garcia, Y Martynov, A Mas, S Masciocchi, M Masera, A Masoni, L Massacrier, M Mastromarco, A Mastroserio, ZL Matthews, A Matyja, D Mayani, C Mayer, J Mazer, MA Mazzoni, F Meddi, A Menchaca-Rocha, J Mercado Perez, M Meres, Y Miake, L Milano, J Milosevic, A Mischke, AN Mishra, D Miskowiec, C Mitu, J Mlynarz, AK Mohanty, B Mohanty, L Molnar, L Montano Zetina, M Monteno, E Montes, T Moon, M Morando, DA Moreira De Godoy, S Moretto, A Morsch, V Muccifora, E Mudnic, S Muhuri, H Muller, MG Munhoz, L Musa, A Musso, BK Nandi, R Nania, E Nappi, C Nattrass, NP Naumov, S Navin, TK Nayak, S Nazarenko, G Nazarov, A Nedosekin, M Nicassio, BS Nielsen, T Niida, S Nikolaev, V Nikolic, V Nikulin, S Nikulin, BS Nilsen, MS Nilsson, F Noferini, P Nomokonov, G Nooren, N Novitzky, A Nyanin, A Nyatha, C Nygaard, J Nystrand, A Ochirov, H Oeschler, SK Oh, S Oh, J Oleniacz, C Oppedisano, A Ortiz Velasquez, G Ortona, A Oskarsson, P Ostrowski, J Otwinowski, G Ovrebekk, K Oyama, K Ozawa, Y Pachmayer, M Pachr, F Padilla, P Pagano, G Paic, F Painke, C Pajares, SK Pal, S Pal, A Palaha, A Palmeri, V Papikyan, GS Pappalardo, WJ Park, A Passfeld, B Pastircak, DI Patalakha, V Paticchio, A Pavlinov, T Pawlak, T Peitzmann, E Pereira De Oliveira Filho, D Peresunko, CE Perez Lara, E Perez Lezama, D Perini, D Perrino, W Peryt, A Pesci, V Peskov, Y Pestov, V Petracek, M Petran, M Petris, P Petrov, M Petrovici, C Petta, S Piano, A Piccotti, M Pikna, P Pillot, O Pinazza, L Pinsky, N Pitz, F Piuz, DB Piyarathna, M Ploskon, J Pluta, T Pocheptsov, S Pochybova, PLM Podesta-Lerma, MG Poghosyan, K Polak, B Polichtchouk, A Pop, S Porteboeuf-Houssais, V Pospisil, B Potukuchi, SK Prasad, R Preghenella, F Prino, CA Pruneau, I Pshenichnov, S Puchagin, G Puddu, J Pujol Teixido, A Pulvirenti, V Punin, M Putis, J Putschke, E Quercigh, H Qvigstad, A Rachevski, A Rademakers, S Radomski, TS Raiha, J Rak, A Rakotozafindrabe, L Ramello, A Ramirez Reyes, S Raniwala, R Raniwala, SS Rasanen, BT Rascanu, D Rathee, KF Read, JS Real, K Redlich, P Reichelt, M Reicher, R Renfordt, AR Reolon, A Reshetin, F Rettig, J-P Revol, K Reygers, L Riccati, RA Ricci, T Richert, M Richter, P Riedler, W Riegler, F Riggi, M Rodriguez Cahuantzi, K Roed, D Rohr, D Rohrich, R Romita, F Ronchetti, P Rosnet, S Rossegger, A Rossi, F Roukoutakis, C Roy, P Roy, AJ Rubio Montero, R Rui, E Ryabinkin, A Rybicki, S Sadovsky, K Safarik, R Sahoo, PK Sahu, J Saini, H Sakaguchi, S Sakai, D Sakata, CA Salgado, J Salzwedel, S Sambyal, V Samsonov, X Sanchez Castro, L Sandor, A Sandoval, S Sano, M Sano, R Santo, R Santoro, J Sarkamo, E Scapparone, F Scarlassara, RP Scharenberg, C Schiaua, R Schicker, HR Schmidt, C Schmidt, S Schreiner, S Schuchmann, J Schukraft, Y Schutz, K Schwarz, K Schweda, G Scioli, E Scomparin, PA Scott, R Scott, G Segato, I Selyuzhenkov, S Senyukov, J Seo, S Serci, E Serradilla, A Sevcenco, I Sgura, A Shabetai, G Shabratova, R Shahoyan, N Sharma, S Sharma, K Shigaki, M Shimomura, K Shtejer, Y Sibiriak, M Siciliano, E Sicking, S Siddhanta, T Siemiarczuk, D Silvermyr, C Silvestre, G Simonetti, R Singaraju, R Singh, S Singha, T Sinha, BC Sinha, B Sitar, M Sitta, TB Skaali, K Skjerdal, R Smakal, N Smirnov, RJM Snellings, C Sogaard, R Soltz, H Son, M Song, J Song, C Soos, F Soramel, I Sputowska, M Spyropoulou-Stassinaki, BK Srivastava, J Stachel, I Stan, I Stan, G Stefanek, G Stefanini, T Steinbeck, M Steinpreis, E Stenlund, G Steyn, D Stocco, M Stolpovskiy, K Strabykin, P Strmen, AAP Suaide, MA Subieta Vasquez, T Sugitate, C Suire, M Sukhorukov, R Sultanov, M Sumbera, T Susa, A Szanto de Toledo, I Szarka, A Szostak, C Tagridis, J Takahashi, JD Tapia Takaki, A Tauro, G Tejeda Munoz, A Telesca, C Terrevoli, J Thader, D Thomas, R Tieulent, AR Timmins, D Tlusty, A Toia, H Torii, L Toscano, F Tosello, D Truesdale, WH Trzaska, T Tsuji, A Tumkin, R Turrisi, TS Tveter, J Ulery, K Ullaland, J Ulrich, A Uras, J Urban, GM Urciuoli, GL Usai, M Vajzer, M Vala, L Valencia Palomo, S Vallero, N van der Kolk, P Vande Vyvre, M van Leeuwen, L Vannucci, A Vargas, R Varma, M Vasileiou, A Vasiliev, V Vechernin, M Veldhoen, M Venaruzzo, E Vercellin, S Vergara, DC Vernekohl, R Vernet, M Verweij, L Vickovic, G Viesti, O Vikhlyantsev, Z Vilakazi, O Villalobos Baillie, A Vinogradov, Y Vinogradov, L Vinogradov, T Virgili, YP Viyogi, A Vodopyanov, S Voloshin, K Voloshin, G Volpe, B von Haller, D Vranic, J Vrlakova, B Vulpescu, A Vyushin, B Wagner, V Wagner, R Wan, Y Wang, D Wang, Y Wang, M Wang, K Watanabe, JP Wessels, U Westerhoff, J Wiechula, J Wikne, M Wilde, G Wilk, A Wilk, MCS Williams, B Windelband, L Xaplanteris Karampatsos, H Yang, S Yang, S Yasnopolskiy, J Yi, Z Yin, H Yokoyama, I-K Yoo, J Yoon, W Yu, X Yuan, I Yushmanov, C Zach, C Zampolli, S Zaporozhets, A Zarochentsev, P Zavada, N Zaviyalov, H Zbroszczyk, P Zelnicek, IS Zgura, M Zhalov, X Zhang, D Zhou, Y Zhou, F Zhou, X Zhu, A Zichichi, A Zimmermann, G Zinovjev, Y Zoccarato, M Zynovyev

Abstract:

The ALICE Collaboration has measured inclusive J/psi production in pp collisions at a center of mass energy sqrt(s)=2.76 TeV at the LHC. The results presented in this Letter refer to the rapidity ranges |y|<0.9 and 2.5
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Measurement of the cross section for production of b b-bar X, decaying to muons in pp collisions at sqrt(s)=7 TeV

ArXiv 1203.3458 (2012)
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Measurement of the charge asymmetry in top-quark pair production in proton-proton collisions at √s=7 TeV

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 709:1-2 (2012) 28-49

Authors:

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, M Hoch, N Hörmann, J Hrubec, M Jeitler, W Kiesenhofer, A Knapitsch, M Krammer, D Liko, I Mikulec, M Pernicka, B Rahbaran, C Rohringer, H Rohringer, R Schöfbeck, J Strauss, A Taurok, F Teischinger, P Wagner, W Waltenberger, G Walzel, E Widl, CE Wulz, V Mossolov, N Shumeiko, J Suarez Gonzalez, S Bansal, L Benucci, 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, GH Hammad, T Hreus, A Léonard, PE Marage, L Thomas, C Vander Velde, P Vanlaer, J Wickens, V Adler, K Beernaert, A Cimmino, S Costantini, 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, N Zaganidis, S Basegmez, G Bruno, J Caudron, L Ceard

Abstract:

The difference in angular distributions between top quarks and antiquarks, commonly referred to as the charge asymmetry, is measured in pp collisions at the LHC with the CMS experiment. The data sample corresponds to an integrated luminosity of 1.09fb -1 at a centre-of-mass energy of 7 TeV. Top-quark pairs are selected in the final state with an electron or muon and four or more jets. At least one jet is identified as originating from b-quark hadronization. The charge asymmetry is measured in two variables, one based on the pseudorapidities (η) of the top quarks and the other on their rapidities (y). The results ACη=-0.017±0.032(stat.)-0.036+0.025(syst.) and ACy=-0.013±0.028(stat.)-0.031+0.029(syst.) are consistent within uncertainties with the standard-model predictions. © 2012 CERN.
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Search for the standard model Higgs boson in the diphoton decay channel with 4.9fb-1 of pp collision data at √s=7TeV with atlas

Physical Review Letters 108:11 (2012)

Authors:

G Aad, B Abbott, J Abdallah, S Abdel Khalek, AA Abdelalim, A Abdesselam, O Abdinov, B Abi, M Abolins, OS Abouzeid, H Abramowicz, H Abreu, E Acerbi, BS Acharya, L Adamczyk, DL Adams, TN Addy, J Adelman, M Aderholz, S Adomeit, P Adragna, T Adye, S Aefsky, JA Aguilar-Saavedra, M Aharrouche, SP Ahlen, F Ahles, A Ahmad, M Ahsan, G Aielli, T Akdogan, TPA Åkesson, G Akimoto, AV Akimov, A Akiyama, MS Alam, MA Alam, J Albert, S Albrand, M Aleksa, IN Aleksandrov, F Alessandria, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, M Aliev, G Alimonti, J Alison, M Aliyev, BMM Allbrooke, PP Allport, SE Allwood-Spiers, J Almond, A Aloisio, R Alon, A Alonso, B Alvarez Gonzalez, MG Alviggi, K Amako, P Amaral, C Amelung, VV Ammosov, A Amorim, G Amorós, N Amram, C Anastopoulos, LS Ancu, N Andari, T Andeen, CF Anders, G Anders, KJ Anderson, A Andreazza, V Andrei, ML Andrieux, XS Anduaga, A Angerami, F Anghinolfi, A Anisenkov, N Anjos, A Annovi, A Antonaki, M Antonelli, A Antonov, J Antos, F Anulli, S Aoun, L Aperio Bella, R Apolle, G Arabidze, I Aracena, Y Arai, ATH Arce, S Arfaoui, JF Arguin, E Arik, M Arik, AJ Armbruster

Abstract:

A search for the standard model Higgs boson is performed in the diphoton decay channel. The data used correspond to an integrated luminosity of 4.9fb-1 collected with the ATLAS detector at the Large Hadron Collider in proton-proton collisions at a center-of-mass energy of √s=7TeV. In the diphoton mass range 110-150GeV, the largest excess with respect to the background-only hypothesis is observed at 126.5GeV, with a local significance of 2.8 standard deviations. Taking the look-elsewhere effect into account in the range 110-150GeV, this significance becomes 1.5 standard deviations. The standard model Higgs boson is excluded at 95% confidence level in the mass ranges of 113-115GeV and 134.5-136GeV. © 2012 CERN.
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Search for the standard model Higgs boson in the decay channel H→ZZ→4l in pp collisions at √s=7TeV

Physical Review Letters 108:11 (2012)

Authors:

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, M Hoch, N Hörmann, J Hrubec, M Jeitler, W Kiesenhofer, M Krammer, D Liko, I Mikulec, M Pernicka, B Rahbaran, C Rohringer, H Rohringer, R Schöfbeck, J Strauss, A Taurok, F Teischinger, P Wagner, W Waltenberger, G Walzel, E Widl, CE Wulz, V Mossolov, N Shumeiko, J Suarez Gonzalez, S Bansal, L Benucci, 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, GH Hammad, T Hreus, A Léonard, PE Marage, L Thomas, C Vander Velde, P Vanlaer, J Wickens, 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

Abstract:

A search for a Higgs boson in the four-lepton decay channel H→ZZ, with each Z boson decaying to an electron or muon pair, is reported. The search covers Higgs boson mass hypotheses in the range of 110100GeV (with 13 below 160GeV), while 67.1±6.0 (9.5±1.3) events are expected from background. The four-lepton mass distribution is consistent with the expectation of standard model background production of ZZ pairs. Upper limits at 95% confidence level exclude the standard model Higgs boson in the ranges of 134-158GeV, 180-305GeV, and 340-465GeV. Small excesses of events are observed around masses of 119, 126, and 320GeV, making the observed limits weaker than expected in the absence of a signal. © 2012 CERN.
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