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Search for strong gravity signatures in same-sign dimuon final states using the ATLAS detector at the LHC

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 709:4-5 (2012) 322-340

Authors:

G Aad, B Abbott, J Abdallah, AA Abdelalim, A Abdesselam, O Abdinov, B Abi, M Abolins, H Abramowicz, H Abreu, E Acerbi, BS Acharya, 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, 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, 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, JP Archambault, S Arfaoui, JF Arguin, E Arik, M Arik, AJ Armbruster, O Arnaez, A Artamonov, G Artoni, D Arutinov

Abstract:

A search for microscopic black holes has been performed in a same-sign dimuon final state using 1.3 fb -1 of proton-proton collision data collected with the ATLAS detector at a centre of mass energy of 7 TeV at the CERN Large Hadron Collider. The data are found to be consistent with the expectation from the Standard Model and the results are used to derive exclusion contours in the context of a low scale gravity model. © 2012 CERN.
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Measurement of the inclusive jet cross section in pp̄ collisions at √s=1.96TeV

Physical Review D - Particles, Fields, Gravitation and Cosmology 85:5 (2012)

Authors:

VM Abazov, B Abbott, BS Acharya, M Adams, T Adams, GD Alexeev, G Alkhazov, A Alton, G Alverson, GA Alves, M Aoki, A Askew, B Åsman, S Atkins, O Atramentov, K Augsten, C Avila, J Backusmayes, F Badaud, L Bagby, B Baldin, DV Bandurin, S Banerjee, E Barberis, P Baringer, J Barreto, JF Bartlett, U Bassler, V Bazterra, A Bean, M Begalli, C Belanger-Champagne, L Bellantoni, SB Beri, G Bernardi, R Bernhard, I Bertram, M Besançon, R Beuselinck, VA Bezzubov, PC Bhat, V Bhatnagar, G Blazey, S Blessing, K Bloom, A Boehnlein, D Boline, EE Boos, G Borissov, T Bose, A Brandt, O Brandt, R Brock, G Brooijmans, A Bross, D Brown, J Brown, XB Bu, M Buehler, V Buescher, V Bunichev, S Burdin, TH Burnett, CP Buszello, B Calpas, E Camacho-Pérez, MA Carrasco-Lizarraga, BCK Casey, H Castilla-Valdez, S Chakrabarti, D Chakraborty, KM Chan, A Chandra, E Chapon, G Chen, S Chevalier-Théry, DK Cho, SW Cho, S Choi, B Choudhary, S Cihangir, D Claes, J Clutter, M Cooke, WE Cooper, M Corcoran, F Couderc, MC Cousinou, A Croc, D Cutts, A Das, G Davies, K De, SJ De Jong, E De La Cruz-Burelo, F Déliot, R Demina, D Denisov, SP Denisov, S Desai

Abstract:

We present a measurement of the inclusive jet cross section using the Run II cone algorithm and data collected by the D0 experiment in pp̄ collisions at a center-of-mass energy √s=1.96TeV, corresponding to an integrated luminosity of 0.70fb -1. The jet energy calibration and the method used to extract the inclusive jet cross section are described. We discuss the main uncertainties, which are dominated by the jet energy scale uncertainty. The results cover jet transverse momenta from 50GeV to 600GeV with jet rapidities in the range -2.4 to 2.4 and are compared to predictions using recent proton parton distribution functions. Studies of correlations between systematic uncertainties in transverse momentum and rapidity are presented. © 2012 American Physical Society.
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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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