ϒ(nS) polarizations versus particle multiplicity in pp collisions at s = 7  TeV

Physics Letters B Elsevier 761 (2016) 31-52

Authors:

V Khachatryan, AM Sirunyan, A Tumasyan, W Adam, E Asilar, T Bergauer, J Brandstetter, E Brondolin, M Dragicevic, J Erö, C Fabjan, M Flechl, M Friedl, R Frühwirth, VM Ghete, C Hartl, N Hörmann, J Hrubec, M Jeitler, V Knünz, A König, M Krammer, I Krätschmer, D Liko, T Matsushita, I Mikulec, D Rabady, N Rad, B Rahbaran, H Rohringer, J Schieck, R Schöfbeck, J Strauss, W Treberer-Treberspurg, W Waltenberger, C-E Wulz, V Mossolov, N Shumeiko, J Suarez Gonzalez, S Alderweireldt, T Cornelis, EA De Wolf, X Janssen, A Knutsson, J Lauwers, S Luyckx, M Van De Klundert, H Van Haevermaet, P Van Mechelen, N Van Remortel, A Van Spilbeeck, S Abu Zeid, F Blekman, J D'Hondt, N Daci, I De Bruyn, K Deroover, N Heracleous, J Keaveney, S Lowette, L Moreels, A Olbrechts, Q Python, D Strom, S Tavernier, W Van Doninck, P Van Mulders, GP Van Onsem, I Van Parijs, P Barria, H Brun, C Caillol, B Clerbaux, G De Lentdecker, W Fang, G Fasanella, L Favart, R Goldouzian, A Grebenyuk, G Karapostoli, T Lenzi, A Léonard, T Maerschalk, A Marinov, L Perniè, A Randle-conde, T Seva, C Vander Velde, P Vanlaer, R Yonamine, F Zenoni, F Zhang, K Beernaert, L Benucci, A Cimmino, S Crucy, D Dobur, A Fagot, G Garcia, M Gul, J Mccartin, AA Ocampo Rios, D Poyraz, D Ryckbosch, S Salva, M Sigamani, M Tytgat, W Van Driessche, E Yazgan, N Zaganidis, S Basegmez, C Beluffi, O Bondu, S Brochet, G Bruno, A Caudron, L Ceard, C Delaere, D Favart, L Forthomme, A Giammanco, A Jafari, P Jez, M Komm, V Lemaitre, A Mertens, M Musich, C Nuttens, L Perrini, K Piotrzkowski, A Popov, L Quertenmont, M Selvaggi, M Vidal Marono, N Beliy, GH Hammad, WL Aldá Júnior, FL Alves, GA Alves, L Brito, M Correa Martins, M Hamer, C Hensel, A Moraes, ME Pol, P Rebello Teles, E Belchior Batista Das Chagas, W Carvalho, J Chinellato, A Custódio, EM Da Costa, D De Jesus Damiao, C De Oliveira Martins, S Fonseca De Souza, LM Huertas Guativa, H Malbouisson, D Matos Figueiredo, C Mora Herrera, L Mundim, H Nogima, WL Prado Da Silva, A Santoro, A Sznajder, EJ Tonelli Manganote, A Vilela Pereira, S Ahuja, CA Bernardes, A De Souza Santos, S Dogra, TR Fernandez Perez Tomei, EM Gregores, PG Mercadante, CS Moon, SF Novaes, Sandra S Padula, D Romero Abad, JC Ruiz Vargas, A Aleksandrov, R Hadjiiska, P Iaydjiev, M Rodozov, S Stoykova, G Sultanov, M Vutova, A Dimitrov, I Glushkov, L Litov, B Pavlov, P Petkov, M Ahmad, JG Bian, GM Chen, HS Chen, M Chen, T Cheng, R Du, CH Jiang, D Leggat, R Plestina, F Romeo, SM Shaheen, A Spiezia, J Tao, C Wang, Z Wang, H Zhang, C Asawatangtrakuldee, Y Ban, Q Li, S Liu, Y Mao, SJ Qian, D Wang, Z Xu, C Avila, A Cabrera, LF Chaparro Sierra, C Florez, JP Gomez, B Gomez Moreno, JC Sanabria, N Godinovic, D Lelas, I Puljak, PM Ribeiro Cipriano, Z Antunovic, M Kovac, V Brigljevic, K Kadija, J Luetic, S Micanovic, L Sudic, A Attikis, G Mavromanolakis, J Mousa, C Nicolaou, F Ptochos, PA Razis, H Rykaczewski, M Bodlak, M Finger, M Finger, AA Abdelalim, A Awad, A Mahrous, A Radi, B Calpas, M Kadastik, M Murumaa, M Raidal, A Tiko, C Veelken, P Eerola, J Pekkanen, M Voutilainen, J Härkönen, V Karimäki, R Kinnunen, T Lampén, K Lassila-Perini, S Lehti, T Lindén, P Luukka, T Peltola, J Tuominiemi, E Tuovinen, L Wendland, J Talvitie, T Tuuva, M Besancon, F Couderc, M Dejardin, D Denegri, B Fabbro, JL Faure, C Favaro, F Ferri, S Ganjour, A Givernaud, P Gras, G Hamel de Monchenault, P Jarry, E Locci, M Machet, J Malcles, J Rander, A Rosowsky, M Titov, A Zghiche, A Abdulsalam, I Antropov, S Baffioni, F Beaudette, P Busson, L Cadamuro, E Chapon, C Charlot, O Davignon, N Filipovic, R Granier de Cassagnac, M Jo, S Lisniak, L Mastrolorenzo, P Miné, IN Naranjo, M Nguyen, C Ochando, G Ortona, P Paganini, P Pigard, S Regnard, R Salerno, JB Sauvan, Y Sirois, T Strebler, Y Yilmaz, A Zabi, J-L Agram, J Andrea, A Aubin, D Bloch, J-M Brom, M Buttignol, EC Chabert, N Chanon, C Collard, E Conte, X Coubez, J-C Fontaine, D Gelé, U Goerlach, C Goetzmann, A-C Le Bihan, JA Merlin, K Skovpen, P Van Hove, S Gadrat, S Beauceron, C Bernet, G Boudoul, E Bouvier, CA Carrillo Montoya, R Chierici, D Contardo, B Courbon, P Depasse, H El Mamouni, J Fan, J Fay, S Gascon, M Gouzevitch, B Ille, F Lagarde, IB Laktineh, M Lethuillier, L Mirabito, AL Pequegnot, S Perries, JD Ruiz Alvarez, D Sabes, L Sgandurra, V Sordini, M Vander Donckt, P Verdier, S Viret, T Toriashvili, Z Tsamalaidze, C Autermann, S Beranek, L Feld, A Heister, MK Kiesel, K Klein, M Lipinski, A Ostapchuk, M Preuten, F Raupach, S Schael, JF Schulte, T Verlage, H Weber, V Zhukov, M Ata, M Brodski, E Dietz-Laursonn, D Duchardt, M Endres, M Erdmann, S Erdweg, T Esch, R Fischer, A Güth, T Hebbeker, C Heidemann, K Hoepfner, S Knutzen, P Kreuzer, M Merschmeyer, A Meyer, P Millet, S Mukherjee, M Olschewski, K Padeken, P Papacz, T Pook, M Radziej, H Reithler, M Rieger, F Scheuch, L Sonnenschein, D Teyssier, S Thüer, V Cherepanov, Y Erdogan, G Flügge, H Geenen, M Geisler, F Hoehle, B Kargoll, T Kress, A Künsken, J Lingemann, A Nehrkorn, A Nowack, IM Nugent, C Pistone, O Pooth, A Stahl, M Aldaya Martin, I Asin, N Bartosik, O Behnke, U Behrens, K Borras, A Burgmeier, A Campbell, C Contreras-Campana, F Costanza, C Diez Pardos, G Dolinska, S Dooling, T Dorland, G Eckerlin, D Eckstein, T Eichhorn, G Flucke, E Gallo, J Garay Garcia, A Geiser, A Gizhko, P Gunnellini, J Hauk, M Hempel, H Jung, A Kalogeropoulos, O Karacheban, M Kasemann, P Katsas, J Kieseler, C Kleinwort, I Korol, W Lange, J Leonard, K Lipka, A Lobanov, W Lohmann, R Mankel, I-A Melzer-Pellmann, AB Meyer, G Mittag, J Mnich, A Mussgiller, S Naumann-Emme, A Nayak, E Ntomari, H Perrey, D Pitzl, R Placakyte, A Raspereza, B Roland, MÖ Sahin, P Saxena, T Schoerner-Sadenius, C Seitz, S Spannagel, N Stefaniuk, KD Trippkewitz, R Walsh, C Wissing, V Blobel, M Centis Vignali, AR Draeger, J Erfle, E Garutti, K Goebel, D Gonzalez, M Görner, J Haller, M Hoffmann, RS Höing, A Junkes, R Klanner, R Kogler, N Kovalchuk, T Lapsien, T Lenz, I Marchesini, D Marconi, M Meyer, D Nowatschin, J Ott, F Pantaleo, T Peiffer, A Perieanu, N Pietsch, J Poehlsen, D Rathjens, C Sander, C Scharf, P Schleper, E Schlieckau, A Schmidt, S Schumann, J Schwandt, V Sola, H Stadie, G Steinbrück, FM Stober, H Tholen, D Troendle, E Usai, L Vanelderen, A Vanhoefer, B Vormwald, C Barth, C Baus, J Berger, C Böser, E Butz, T Chwalek, F Colombo, W De Boer, A Descroix, A Dierlamm, S Fink, F Frensch, R Friese, M Giffels, A Gilbert, D Haitz, F Hartmann, SM Heindl, U Husemann, I Katkov, A Kornmayer, P Lobelle Pardo, B Maier, H Mildner, MU Mozer, T Müller, Th Müller, M Plagge, G Quast, K Rabbertz, S Röcker, F Roscher, M Schröder, G Sieber, HJ Simonis, R Ulrich, J Wagner-Kuhr, S Wayand, M Weber, T Weiler, S Williamson, C Wöhrmann, R Wolf, G Anagnostou, G Daskalakis, T Geralis, VA Giakoumopoulou, A Kyriakis, D Loukas, A Psallidas, I Topsis-Giotis, A Agapitos, S Kesisoglou, A Panagiotou, N Saoulidou, E Tziaferi, I Evangelou, G Flouris, C Foudas, P Kokkas, N Loukas, N Manthos, I Papadopoulos, E Paradas, J Strologas, G Bencze, C Hajdu, A Hazi, P Hidas, D Horvath, F Sikler, V Veszpremi, G Vesztergombi, AJ Zsigmond, N Beni, S Czellar, J Karancsi, J Molnar, Z Szillasi, M Bartók, A Makovec, P Raics, ZL Trocsanyi, B Ujvari, S Choudhury, P Mal, K Mandal, DK Sahoo, N Sahoo, SK Swain, S Bansal, SB Beri, V Bhatnagar, R Chawla, R Gupta, U Bhawandeep, AK Kalsi, A Kaur, M Kaur, R Kumar, A Mehta, M Mittal, JB Singh, G Walia, Ashok Kumar, A Bhardwaj, BC Choudhary, RB Garg, S Malhotra, M Naimuddin, N Nishu, K Ranjan, R Sharma, V Sharma, S Bhattacharya, K Chatterjee, S Dey, S Dutta, N Majumdar, A Modak, K Mondal, S Mukhopadhyay, A Roy, D Roy, S Roy Chowdhury, S Sarkar, M Sharan, R Chudasama, D Dutta, V Jha, V Kumar, AK Mohanty, LM Pant, P Shukla, A Topkar, T Aziz, S Banerjee, S Bhowmik, RM Chatterjee, RK Dewanjee, S Dugad, S Ganguly, S Ghosh, M Guchait, A Gurtu, Jain, G Kole, S Kumar, B Mahakud, M Maity, G Majumder, K Mazumdar, S Mitra, GB Mohanty, B Parida, T Sarkar, N Sur, B Sutar, N Wickramage, S Chauhan, S Dube, A Kapoor, K Kothekar, S Sharma, H Bakhshiansohi, H Behnamian, SM Etesami, A Fahim, M Khakzad, M Mohammadi Najafabadi, M Naseri, S Paktinat Mehdiabadi, F Rezaei Hosseinabadi, B Safarzadeh, M Zeinali, M Felcini, M Grunewald, M Abbrescia, C Calabria, C Caputo, A Colaleo, D Creanza, L Cristella, N De Filippis, M De Palma, L Fiore, G Iaselli, G Maggi, M Maggi, G Miniello, S My, S Nuzzo, A Pompili, G Pugliese, R Radogna, A Ranieri, G Selvaggi, L Silvestris, R Venditti, G Abbiendi, C Battilana, D Bonacorsi, S Braibant-Giacomelli, L Brigliadori, R Campanini, P Capiluppi, A Castro, FR Cavallo, SS Chhibra, G Codispoti, M Cuffiani, GM Dallavalle, F Fabbri, A Fanfani, D Fasanella, P Giacomelli, C Grandi, L Guiducci, S Marcellini, G Masetti, A Montanari, FL Navarria, A Perrotta, AM Rossi, T Rovelli, GP Siroli, N Tosi, G Cappello, M Chiorboli, S Costa, A Di Mattia, F Giordano, R Potenza, A Tricomi, C Tuve, G Barbagli, V Ciulli, C Civinini, R D'Alessandro, E Focardi, V Gori, P Lenzi, M Meschini, S Paoletti, G Sguazzoni, L Viliani, L Benussi, S Bianco, F Fabbri, D Piccolo, F Primavera, V Calvelli, F Ferro, M Lo Vetere, MR Monge, E Robutti, S Tosi, L Brianza, ME Dinardo, S Fiorendi, S Gennai, R Gerosa, A Ghezzi, P Govoni, S Malvezzi, RA Manzoni, B Marzocchi, D Menasce, L Moroni, M Paganoni, D Pedrini, S Ragazzi, N Redaelli, T Tabarelli de Fatis, S Buontempo, N Cavallo, S Di Guida, M Esposito, F Fabozzi, AOM Iorio, G Lanza, L Lista, S Meola, M Merola, P Paolucci, C Sciacca, F Thyssen, P Azzi, N Bacchetta, L Benato, D Bisello, A Boletti, R Carlin, P Checchia, M Dall'Osso, T Dorigo, U Dosselli, F Fanzago, F Gasparini, U Gasparini, F Gonella, A Gozzelino, S Lacaprara, M Margoni, AT Meneguzzo, M Michelotto, J Pazzini, N Pozzobon, P Ronchese, F Simonetto, E Torassa, M Tosi, M Zanetti, P Zotto, A Zucchetta, G Zumerle, A Braghieri, A Magnani, P Montagna, SP Ratti, V Re, C Riccardi, P Salvini, I Vai, P Vitulo, L Alunni Solestizi, GM Bilei, D Ciangottini, L Fanò, P Lariccia, G 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Nam, DH Kim, GN Kim, MS Kim, DJ Kong, S Lee, YD Oh, A Sakharov, DC Son, JA Brochero Cifuentes, H Kim, TJ Kim, S Song, S Cho, S Choi, Y Go, D Gyun, B Hong, H Kim, Y Kim, B Lee, K Lee, KS Lee, S Lee, J Lim, SK Park, Y Roh, HD Yoo, M Choi, H Kim, JH Kim, JSH Lee, IC Park, G Ryu, MS Ryu, Y Choi, J Goh, D Kim, E Kwon, J Lee, I Yu, V Dudenas, A Juodagalvis, J Vaitkus, I Ahmed, ZA Ibrahim, JR Komaragiri, MAB Md Ali, F Mohamad Idris, WAT Wan Abdullah, MN Yusli, Z Zolkapli, E Casimiro Linares, H Castilla-Valdez, E De La Cruz-Burelo, I Heredia-De La Cruz, A Hernandez-Almada, R Lopez-Fernandez, J Mejia Guisao, A Sanchez-Hernandez, S Carrillo Moreno, F Vazquez Valencia, I Pedraza, HA Salazar Ibarguen, C Uribe Estrada, A Morelos Pineda, D Krofcheck, PH Butler, A Ahmad, M Ahmad, Q Hassan, HR Hoorani, WA Khan, T Khurshid, M Shoaib, M Waqas, H Bialkowska, M Bluj, B Boimska, T Frueboes, M Górski, M Kazana, K Nawrocki, K Romanowska-Rybinska, M Szleper, P Zalewski, G Brona, K Bunkowski, A Byszuk, K 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Mesyats, SV Rusakov, A Baskakov, A Belyaev, E Boos, A Demiyanov, A Ershov, A Gribushin, O Kodolova, V Korotkikh, I Lokhtin, I Miagkov, S Obraztsov, S Petrushanko, V Savrin, A Snigirev, I Vardanyan, I Azhgirey, I Bayshev, S Bitioukov, V Kachanov, A Kalinin, D Konstantinov, V Krychkine, V Petrov, R Ryutin, A Sobol, L Tourtchanovitch, S Troshin, N Tyurin, A Uzunian, A Volkov, P Adzic, P Cirkovic, D Devetak, J Milosevic, V Rekovic, J Alcaraz Maestre, E Calvo, M Cerrada, M Chamizo Llatas, N Colino, B De La Cruz, A Delgado Peris, A Escalante Del Valle, C Fernandez Bedoya, JP Fernández Ramos, J Flix, MC Fouz, P Garcia-Abia, O Gonzalez Lopez, S Goy Lopez, JM Hernandez, MI Josa, E Navarro De Martino, A Pérez-Calero Yzquierdo, J Puerta Pelayo, A Quintario Olmeda, I Redondo, L Romero, J Santaolalla, MS Soares, C Albajar, JF de Trocóniz, M Missiroli, D Moran, J Cuevas, J Fernandez Menendez, S Folgueras, I Gonzalez Caballero, E Palencia Cortezon, JM Vizan Garcia, IJ Cabrillo, A Calderon, JR 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S Wasserbaech, C Welke, F Würthwein, A Yagil, G Zevi Della Porta, J Bradmiller-Feld, C Campagnari, A Dishaw, V Dutta, K Flowers, M Franco Sevilla, P Geffert, C George, F Golf, L Gouskos, J Gran, J Incandela, N Mccoll, SD Mullin, J Richman, D Stuart, I Suarez, C West, J Yoo, D Anderson, A Apresyan, A Bornheim, J Bunn, Y Chen, J Duarte, A Mott, HB Newman, C Pena, M Spiropulu, JR Vlimant, S Xie, RY Zhu, MB Andrews, V Azzolini, A Calamba, B Carlson, T Ferguson, M Paulini, J Russ, M Sun, H Vogel, I Vorobiev, JP Cumalat, WT Ford, A Gaz, F Jensen, A Johnson, M Krohn, T Mulholland, U Nauenberg, K Stenson, SR Wagner, J Alexander, A Chatterjee, J Chaves, J Chu, S Dittmer, N Eggert, N Mirman, G Nicolas Kaufman, JR Patterson, A Rinkevicius, A Ryd, L Skinnari, L Soffi, W Sun, SM Tan, WD Teo, J Thom, J Thompson, J Tucker, Y Weng, P Wittich, S Abdullin, M Albrow, G Apollinari, S Banerjee, LAT Bauerdick, A Beretvas, J Berryhill, PC Bhat, G Bolla, K Burkett, JN Butler, HWK Cheung, F Chlebana, S 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Combined Electroweak and QCD Fit to HERA data

Physical Review D American Physical Society 94:5 (2016)

Authors:

I Abt, Amanda Cooper-Sarkar, Brian Foster, Claire Gwenlan, V Myronenko, O Turkot, K Wichmann

Abstract:

A simultaneous electroweak and QCD fit of electroweak parameters and parton distribution functions to HERA data on deep inelastic scattering is presented. The input data are neutral current and charged current inclusive cross sections measured by the H1 and ZEUS collaborations at the $ep$ collider HERA. The polarization of the electron beam was taken into account for the ZEUS and H1 data recorded between 2004 and 2007. Results are presented on the vector and axial-vector couplings of the $Z$ boson to $u-$ and $d-$type quarks. The values are in agreement with Standard Model predictions. The results on $au$ and $vu$ represent the most precise measurements from a single process.

The CMS trigger system

ArXiv 1609.02366 (2016)

Search for pair production of Higgs bosons in the bb¯bb¯ final state using proton-proton collisions at sqrt(s)=13  TeV with the ATLAS detector

Physical Review D American Physical Society 94:5 (2016) 1-29

Authors:

Cigdem Issever, AJ Barr, K Becker, L Beresford, D Bortoletto, AM Cooper-Sarkar, M Crispin Ortuzar, WJ Fawcett, JA Frost, EJ Gallas, F Guili, S Gupta, C Gwenlan, CP Hays, J Henderson, TB Huffman, CW Kalderon, K Nagai, RB Nickerson, N Norjaharuddeen, M Petrov, MA Pickering, JC-L Tseng, GHA Viehhauser, L Vigani, AR Weidberg, J Zhong

Abstract:

A search for Higgs-boson pair production in the bb¯bb¯ final state is carried out with 3.2  fb−1 of proton-proton collision data collected at s√=13  TeV with the ATLAS detector. The data are consistent with the estimated background and are used to set upper limits on the production cross section of Higgs-boson pairs times branching ratio to bb¯bb¯ for both nonresonant and resonant production. In the case of resonant production of Kaluza-Klein gravitons within the Randall-Sundrum model, upper limits in the 24 to 91 fb range are obtained for masses between 600 and 3000 GeV, at the 95% confidence level. The production cross section times branching ratio for nonresonant Higgs-boson pairs is also constrained to be less than 1.22 pb, at the 95% confidence level.

Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in √s = 8 TeV proton-proton collisions

Journal of High Energy Physics Springer Berlin Heidelberg 2016 (2016) 175

Authors:

Giacomo Artoni, Alan Barr, A Kathrin Becker, Lydia A Beresford, Daniela Bortoletto, Jonathan TP Burr, Amanda M Cooper-Sarkar, William J Fawcett, James A Frost, Elizabeth J Gallas, Francesco Giuli, Claire Gwenlan, Christopher P Hays, B Todd Huffman, Cigdem Issever, C William Kalderon, Koichi Nagai, Richard B Nickerson, Nurfikri Norjoharuddeen, Mariyan B Petrov, Mark Pickering, Jeffrey C-L Tseng, Georg HA Viehhauser, Luigi Vigani, Anthony R Weidberg, Jiahang Zhong

Abstract:

A selection of searches by the ATLAS experiment at the LHC for the electroweak production of SUSY particles are used to study their impact on the constraints on dark matter candidates. The searches use 20 fb−1 of proton–proton collision data at √ s = 8 TeV. A likelihood-driven scan of a five-dimensional effective model focusing on the gaugino–higgsino and Higgs sector of the phenomenological minimal supersymmetric Standard Model is performed. This scan uses data from direct dark matter detection experiments, the relic dark matter density and precision flavour physics results. Further constraints from the ATLAS Higgs mass measurement and SUSY searches at LEP are also applied. A subset of models selected from this scan are used to assess the impact of the selected ATLAS searches in this five-dimensional parameter space. These ATLAS searches substantially impact those models for which the mass m( ˜χ 0 1 ) of the lightest neutralino is less than 65 GeV, excluding 86% of such models. The searches have limited impact on models with larger m( ˜χ 0 1 ) due to either heavy electroweakinos or compressed mass spectra where the mass splittings between the produced particles and the lightest supersymmetric particle is small.