Title: | First measurement of the underlying event activity at the LHC with root s=0.9 TeV |
Authors: | Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Ero, J Fabjan, C Friedl, M Fruhwirth, R Ghete, VM Palichik, V Eskew, C Glege, F Fehling, D Giurgiu, G Polic, D Gritsan, AV Guo, ZJ Hu, G Maksimovic, P Killewald, P Perelygin, V Arenton, MW Rappoccio, S Swartz, M Tran, NV Garrido, RGR Whitbeck, A Baringer, P Bean, A Puljak, I Benelli, G Shmatov, S Grachov, O Balazs, M Murray, M Radicci, V Sanders, S Wood, JS Gowdy, S Zhukova, V Bandurin, D Bolton, T Smirnov, V Chakaberia, I Antunovic, Z Boutle, S Ivanov, A Kaadze, K Maravin, Y Shrestha, S Svintradze, I Guiducci, L Wan, Z Volodko, A Gronberg, J Lange, D Wright, D Buehler, M Baden, A Dzelalija, M Boutemeur, M Eno, SC Ferencek, D Hadley, NJ Zarubin, A Hansen, M Kellogg, RG Kirn, M Mignerey, AC Klem, J Rossato, K Rumerio, P Santanastasio, F Brigljevic, V Skuja, A Giammanco, A Temple, J Tonjes, MB Souza, MHG Tonwar, SC Twedt, E Conetti, S Alver, B Bauer, G Bendavid, J Busza, W Theofilatos, K Butz, E Duric, S Cali, IA Chan, M Hartl, C D'Enterria, D Cox, B Everaerts, P Ceballos, GG Goncharov, M Bondar, N Hahn, KA Harris, P Kim, Y Klute, M Kiesenhofer, W Kadija, K Harvey, J Hirosky, R Lee, YJ Li, W Golovtsov, V Loizides, C Luckey, PD Ma, T Nahn, S Paus, C Roland, C Roland, G Rudolph, M Ledovskoy, A Hegner, B Chung, YS Miner, DC Morovic, S Stephans, GSF Sumorok, K Sung, K Wenger, EA Wyslouch, B Xie, S Yilmaz, Y Yoon, AS Petrilli, A Ivanov, Y Zanetti, M Henderson, C Cole, P Attikis, A Cooper, SI Cushman, P Dahmes, B De Benedetti, A Dudero, PR Franzoni, G Kim, V Ling, TY Neu, C Haupt, J Klapoetke, K Hoffmann, HF Kubota, Y Mans, J Fereos, R Rekovic, V Rusack, R Levchenko, P Sasseville, M Singovsky, A Yohay, R Cremaldi, LM Godang, R Kroeger, R Honma, A Perera, L Rahmat, R Sanders, DA Smirnov, I Galanti, M Sonnek, P Summers, D Gollapinni, S Bloom, K Bose, S Butt, J Claes, DR Innocente, V Dominguez, A Sulimov, V Eads, M Keller, J Kelly, T Mousa, J Gunthoti, K Kravchenko, I Lazo-Flores, J Lundstedt, C Malbouisson, H Malik, S Uvarov, L Janot, P Snow, GR Baur, U Iashvili, I Kharchilava, A Harr, R Kumar, A Nicolaou, C Smith, K Zennamo, J Vavilov, S Alverson, G Barberis, E Lecoq, P Baumgartel, D Boeriu, O Reucroft, S Karchin, PE Swain, J Wood, D Zhang, J Vorobyev, A Ptochos, F Anastassov, A Kubik, A Ofierzynski, RA Leonidopoulos, C Pozdnyakov, A Schmitt, M Kortelainen, MJ Stoynev, S Velasco, M Treille, D Won, S Antonelli, L Berry, D Razis, PA Hildreth, M Jessop, C Carvalho, W Karmgard, DJ Mattson, M Kolb, J Janulis, M Gregoire, G Kolberg, T Lannon, K Lynch, S Marinelli, N Morse, DM Ruchti, R Rykaczewski, H Slaunwhite, J Milstene, C Sakharov, A Lourenco, C Krammer, M Pfeiffer, A Anderson, M Bachtis, M Bellinger, JN Carlsmith, D Dasu, S Dutta, S Efron, J Lampen, T Meschi, E Gray, L Macpherson, A Grogg, KS Pierini, M Grothe, M Herndon, M Klabbers, P Klukas, J Lanaro, A Lazaridis, C Andreev, Y Leonard, J Lomidze, D Mahmoud, MA Lassila-Perini, K Loveless, R Albajar, C Pimiaa, M Mohapatra, A Polese, G Reeder, D Gninenko, S Savin, A Smith, WH Swanson, J Rodenburg, M Weinberg, M CMS Collaboration Lehti, S Linden, T Hammer, J Mikulec, I Golubev, N Luukka, P Maenpaa, T Tuominen, E Tuominiemi, J Williams, G Tuovinen, E Ungaro, D Wendland, L Banzuzi, K Korpela, A Kirsanov, M Damiao, DD Tuuva, T Pernicka, M Sillou, D Besancon, M Adam, N Dejardin, M Denegri, D Descamps, J Fabbro, B Krasnikov, N Faure, JL Ferri, F Racz, A Ganjour, S Gentit, FX Rohringer, H Berry, E Givernaud, A Gras, P de Monchenault, GH Matveev, V Jarry, P Locci, E Malcles, J Marionneau, M Rolandi, G Millischer, L Rander, J Elmer, P Rosowsky, A Schofbeck, R Pashenkov, A Rousseau, D Titov, M Verrecchia, P Baffioni, S Bianchini, L Bluj, M Rovelli, C Broutin, C Gerbaudo, D Busson, P Basegmez, S Toropin, A Charlot, C Dobrzynski, L Strauss, J Elgammal, S de Cassagnac, RG Haguenauer, M Kalinowski, A Mine, P Rovere, M Halyo, V Troitsky, S Paganini, P Sabes, D Sirois, Y Thiebaux, C Zabi, A Taurok, A Agram, JL Besson, A Bloch, D Bodin, D Do Amaral, SMS Hunt, A Sakulin, H Brom, JM Cardaci, M Conte, E Drouhin, F Ferro, C Fontaine, JC Teischinger, F Gele, D Orbaker, D Goerlach, U Jones, J Greder, S Schafer, C Juillot, P Karim, M Le Bihan, AC Mikami, Y Speck, J Van Hove, P Epshteyn, V Fassi, F Waltenberger, W Maki, T Mercier, D Baty, C Schwick, C Beaupere, N Bedjidian, M Bondu, O Boudoul, G Hollar, J Boumediene, D Brun, H Chanon, N Laird, E Chierici, R Walzel, G Contardo, D de Troconiz, JF Segoni, I Depasse, P Gavrilov, V El Mamouni, H Fay, J Gascon, S Ille, B Hektor, A Kurca, T Le Grand, T Lethuillier, M Mirabito, L Widl, E Ilina, N Sharma, A Perries, S Sordini, V Tosi, S Tschudi, Y Pegna, DL Verdier, P Xiao, H Roinishvili, V Anagnostou, G Kaftanov, V Edelhoff, M Feld, L Siegrist, P Wulz, CE Heracleous, N Hindrichs, O Marlow, D Jussen, R Klein, K Merz, J Kossov, M Mohr, N Ostapchuk, A Perieanu, A Raupach, F Martins, CD Sammet, J Mossolov, V Medvedeva, T Schael, S Sprenger, D Martisiute, D Krokhotin, A Weber, H Weber, M Wittmer, B Actis, O Ata, M Bender, W Simon, M Biallass, P Mooney, M Erdmann, M Kuleshov, S Shumeiko, N Frangenheim, J Hebbeker, T Hinzmann, A Hoepfner, K Hof, C Kirsch, M Klimkovich, T Sphicas, P Olsen, J Oulianov, A Kreuzer, P Lanske, D Magass, C Gonzalez, JS Merschmeyer, M Meyer, A Papacz, P Pieta, H Reithler, H Schmitz, SA Safronov, G Piroue, P Spiga, D Sonnenschein, L Sowa, M Steggemann, J Teyssier, D Benucci, L Zeidler, C Bontenackels, M Davids, M Petrillo, G Duda, M Stickland, D Flugge, G Spiropulu, M Geenen, H Giffels, M Ahmad, WH Heydhausen, D Kress, T Ceard, L Calderon, A Kuessel, Y Linn, A Tully, C Nowack, A Perchalla, L Stockli, F Pooth, O Sauerland, P Stahl, A Thomas, M Weber, M Tornier, D Zoeller, MH De Wolf, EA Malgeri, L Martin, MA Behrenhoff, W Behrens, U Stoye, M Bergholz, M Borras, K Semenov, S Campbell, A Castro, E Dammann, D Eckerlin, G Werner, JS Flossdorf, A Hashemi, M Flucke, G Geiser, A Cuevas, J Shreyber, I Tropea, P Hauk, J Jung, H Kasemann, M Katkov, I Zuranski, A Kleinwort, C Kluge, H Knutsson, A Kuznetsova, E Lemaitre, V Janssen, X Lange, W Tsirou, A Lohmann, W Mankel, R Marienfeld, M Kadastik, M Melzer-Pellmann, IA Meyer, AB Mnich, J Petrov, P Stolin, V Mussgiller, A Olzem, J Parenti, A Maes, T Veres, GI Raspereza, A Schmidt, R Acosta, JG Schoerner-Sadenius, T Sen, N Vlasov, E Stein, M Tomaszewska, J Volyanskyy, D Wissing, C Autermann, C Draeger, J Vichoudis, P Mucibello, L Huang, XT Eckstein, D Zhokin, A Enderle, H Gebbert, U Kaschube, K Kaussen, G Klanner, R Mura, B Naumann-Emme, S Nowak, F De Souza, SF Lopez, A Boos, E Sander, C Ochesanu, S Schettler, H Schleper, P Schroder, M Schum, T Schwandt, J Srivastava, AK Stadie, H Steinbruck, G Dubinin, M Mendez, H Voutilainen, M Thomsen, J Wolf, R Roland, B Bauer, J Buege, V Cakir, A Chwalek, T Daeuwel, D Vishnevskiy, D De Boer, W Oliveros, S Dierlamm, A Zeuner, WD Dirkes, G Feindt, M Gruschke, J Rougny, R Hackstein, C Hartmann, F Dudko, L Heinrich, M Held, H Vargas, JER Hoffmann, KH Honc, S Bertl, W Kuhr, T Martschei, D Mueller, S Muller, T Ershov, A Selvaggi, M Niegel, M Oberst, O Zatzerklyaniy, A Oehler, A Ott, J Peiffer, T Deiters, K Piparo, D Quast, G Wehrli, L Rabbertz, K Ratnikov, F Renz, M Van Haevermaet, H Mannelli, M Sabellek, A Saout, C Scheurer, A Schieferdecker, P Erdmann, W Gribushin, A Schilling, FP Schott, G Simonis, HJ Stober, FM Troendle, D Alagoz, E Wagner-Kuhr, J Van Mechelen, P Zeise, M Zhukovh, V Sabonis, T Kodolova, O Ziebarth, EB Menendez, JF Gabathuler, K Daskalakis, G Geralis, T Kyriakis, A Barnes, VE Loukas, D Manolakos, I Markou, A Lokhtin, I Markou, C Van Remortel, N Mavrommatis, C Petrakou, E Horisberger, R Gouskos, L Katsas, P Bolla, G Panagiotou, A Evangelou, I Militaru, O Kokkas, P Manthos, N Papadopoulos, I Patras, V Adler, V Triantis, FA Ingram, Q Aranyi, A Kannike, K Bencze, G Obraztsov, S Boldizsar, L Debreczeni, G Hajdu, C Horvath, D Kapusi, A Krajczar, K Laszlo, A Beauceron, S Kaestli, HC Borrello, L Petrushanko, S Sikler, F Vesztergombi, G Beni, N Molnar, J Palinkas, J Szillasi, Z Veszpremi, V Raics, P Trocsanyi, ZL Ujvari, B Sarycheva, L Bortoletto, D Konig, S Blyweert, S Bansal, S Beri, SB Bhatnagar, V Jindal, M Kaur, M Kohli, JM Mehta, MZ Zielinski, M Nishu, N Everett, A Saini, LK Mundim, L Sharma, A D'Hondt, J Sharma, R Singh, AP Singh, JB Singh, SP Savrin, V Ahuja, S Bhattacharya, S Garfinkel, AF Chauhan, S Choudhary, BC Kotlinski, D Gupta, P Jain, S Devroede, O Jain, S Snigirev, A Kumar, A Ranjan, K Shivpuri, RK Gecse, Z Choudhury, RK Dutta, D Kailas, S Langenegger, U Kataria, SK Mohanty, AK Andreev, V Pant, LM Kalogeropoulos, A Shukla, P Suggisetti, P Gutay, L Aziz, T Guchait, M Gurtu, A Maity, M Meier, F Valdez, HC Weng, J Majumder, D Majumder, G Mazumdar, K Mohanty, GB Maes, J Masetti, L Saha, A Sudhakar, K Wickramage, N Banerjee, S Dremin, I Dugad, S Renker, D Mondal, NK Arfaei, H Bakhshiansohi, H Fahim, A Jones, M Jafari, A Maes, M Najafabadi, MM Kirakosyan, M Mehdiabadi, SP Safarzadeh, B Zeinali, M Caballero, IG Rohe, T Abbrescia, M Barbone, L Koybasi, O Colaleo, A Creanza, D Rusakov, SV De Filippis, N De Palma, M Tavernier, S Dimitrov, A Fedele, F Fiore, L Sibille, J Iaselli, G Laasanen, AT Lusito, L Vinogradov, A Maggi, G Maggi, M Manna, N Marangelli, B My, S Van Doninck, W Nuzzo, S Pierro, GA Starodumov, A Leonardo, N Ovyn, S Pompili, A Pugliese, G Romano, F Roselli, G Selvaggi, G Silvestris, L Trentadue, R Tupputi, S Van Mulders, P Zito, G Azhgirey, I Muntel, M Caminada, L Abbiendi, G Benvenuti, AC Bonacorsi, D Braibant-Giacomelli, S Capiluppi, P Castro, A Cavallo, FR Codispoti, G Bhatti, A Cuffiani, M Liu, C Villella, I Chen, Z Dallavalle, GM Fabbri, F Fanfani, A Fasanella, D Giacomelli, P Giunta, M Bitioukov, S Marcellini, S Masetti, G Maroussov, V Montanari, A Navarria, FL Cittolin, S Chabert, EC Odorici, F Perrotta, A Rovelli, T Datsko, K Siroli, G Travaglini, R Albergo, S Merkel, P Cappello, G Chiorboli, M Costa, S Nogima, H Tricomi, A Charaf, O Burelo, ED Grishin, V Tuve, C Barbagli, G Broccolo, G Ciulli, V Miller, DH Civinini, C D'Alessandro, R Focardi, E Frosali, S Dissertori, G Kachanov, V Gallo, E Genta, C Clerbaux, B Lenzi, P Meschini, M Neumeister, N Paoletti, S Sguazzoni, G Tropiano, A Benussi, L Amsler, C Bianco, S Dittmar, M Colafranceschi, S Fabbri, F Piccolo, D De Lentdecker, G Mavromanolakis, G Fabbricatore, P Musenich, R Benaglia, A Konstantinov, D Cerati, GB De Guio, F Di Matteo, L Eugster, J Ghezzi, A Govoni, P Malberti, M Potamianos, K Malvezzi, S Dero, V Krychkine, V Martelli, A Massironi, A Menasce, D Miccio, V Moroni, L Iglesias, LL Freudenreich, K Negri, P Shipsey, I Paganoni, M Petrov, V Pedrini, D Ragazzi, S Redaelli, N Gay, APR Sala, S Salerno, R de Fatis, TT Tancini, V Grab, C Silvers, D Ryutin, R Taroni, S Buontempo, S Cimmino, A De Cosa, A De Gruttola, M Fabozzi, F Hammad, GH Iorio, AOM Lista, L Noli, P Slabospitsky, S Yoo, HD Herve, A Paolucci, P Azzi, P Bacchetta, N Bellan, P Bisello, D Carlin, R Checchia, P Marage, PE Demortier, L De Mattia, M Zablocki, J Dorigo, T Hintz, W Dosselli, U Gasparini, F Giubilato, P Gresele, A Gulmini, M Lacaprara, S Pagano, D Lazzizzera, I Margoni, M Raidal, M Vander Velde, C Mazzucato, M Lecomte, P Meneguzzo, AT Passaseo, M Perrozzi, L Pozzobon, N Lopez-Fernandez, R Sobol, A Ronchese, P Simonetto, F Torassa, E Zheng, Y Tosi, M Triossi, A Vanlaer, P Lustermann, W Vanini, S Ventura, S Sytine, A Zotto, P Baesso, P Berzano, U Riccardi, C Jindal, P Torre, P Vitulo, P Viviani, C Biasini, M Marchica, C Tourtchanovitch, L Wickens, J Bilei, GM Caponeri, B Fano, L Lariccia, P Parashar, N Lucaroni, A Mantovani, G Menichelli, M Nappi, A Troshin, S Santocchia, A Oguri, V Servoli, L Costantini, S Valdata, M Volpe, R Cuplov, V Azzurri, P Bagliesi, G Bernardini, J Chiochia, V Boccali, T Castaldi, R D'Agnolo, RT Meridiani, P Dell'Orso, R Fiori, F Grunewald, M Meijers, F Foa, L Giassi, A Tyurin, N Kraan, A Ligabue, F Lomtadze, T Martini, L Messineo, A Milenovic, P Palla, F Palmonari, F Ecklund, KM Segneri, G Uzunian, A Klein, B Serban, AT Spagnolo, P Tenchini, R Tonelli, G Venturi, A Verdini, PG Garcia, JMV Moortgat, F Geurts, FJM Volkov, A Barone, L Cavallari, F Del Re, D Di Marco, E Marinov, A Diemoz, M Franci, D Grassi, M Longo, E Organtini, G Adzic, P Liu, JH Nardulli, A Palma, A Pandolfi, F Paramatti, R Rahatlou, S Amapane, N Ryckbosch, D Arcidiacono, R Argiro, S Goulianos, K Arneodo, M Morales, J Biino, C Nef, P Botta, C Cartiglia, N Castello, R Costa, M Demaria, N Graziano, A Hernandez, AS Djordjevic, M Thyssen, F Mariotti, C Padley, BP Marone, M Maselli, S Nessi-Tedaldi, F Migliore, E Mila, G Monaco, V Musich, M Krpic, D Obertino, MM Pastrone, N Pelliccioni, M Redjimi, R Tytgat, M Romero, A Ruspa, M Pape, L Sacchi, R Solano, A Pin, A Staiano, A Trocino, D Pereira, AV Ambroglini, F Rebane, L Belforte, S Cossutti, F Vanelderen, L Della Ricca, G Pauss, F Maletic, D Gobbo, B Montanino, D Penzo, A Chang, S Chung, J Roberts, J Kim, DH Kim, GN Kim, JE Kong, DJ Milosevic, J Verwilligen, P Punz, T Park, H Son, D Son, DC Kim, Z Betchart, B Kim, JY Song, S Hong, B Puzovic, J Kim, H Kim, JH Kim, TJ Rizzi, A Walsh, S Lee, KS Moon, DH Bodek, A Park, SK Rhee, HB De Visscher, S Sim, KS Choi, M Kang, S Kim, H Park, C Santoro, A Park, IC Zaganidis, N Mersi, S Park, S Aguilar-Benitez, M Choi, S Choi, Y Choi, YK Goh, J Lee, J Lee, S Seo, H Ronga, FJ Yu, I Maestre, JA Arce, P Cabrillo, IJ Hatakeyama, K Battilana, C Calvo, E Cepeda, M Cerrada, M Piotrzkowski, K Llatas, MC Colino, N Rikova, MI De La Cruz, B de Barbaro, P Pardos, CD Eerola, P Bedoya, CF Ramos, JPF Ferrando, A Flix, J Fouz, MC Garcia-Abia, P Quertenmont, L Lopez, OG Sala, L Mejias, BM Lopez, SG Valls, N Lungu, G Hernandez, JM Josa, MI Merino, G Pelayo, JP Redondo, I Romero, L Villasenor-Cendejas, LM Santaolalla, J Willmott, C Regenfus, C Robmann, P Schul, N Chuang, SH Sznajder, A Rommerskirchen, T Schmidt, A Tsirigkas, D Moreno, SC Wilke, L Chang, YH Chen, KH Chen, WT Go, A Da Costa, EM Kuo, CM Beliy, N Li, SW De Araujo, FTD Ibarguen, HAS Lin, W Liu, MH Lu, YJ Wu, JH Yu, SS Bartalini, P Mesropian, C Chang, P Chang, YH Merino, ID Bruno, G Chang, YW Chao, Y Hansel, S Dias, FA Chen, KF Hou, WS Hsiung, Y Yan, M Kao, KY Lei, YJ Linares, EC Lin, SW Gonzalez, CD Lu, RS Shiu, JG Tzeng, YM Ueno, K Dias, MAF Wang, CC Atramentov, O Wang, M Pineda, AM Wei, JT Adiguzel, A Ayhan, A Campderros, JD Bakirci, MN Cerci, S Demir, Z Dozen, C Dumanoglu, I Gershtein, Y Reyes-Santos, MA Tomei, TRFP Eskut, E Girgis, S Gokbulut, G Guler, Y Fernandez, M Gurpinar, E Hos, I Kangal, EE Karaman, T Allfrey, P Gray, R Topaksu, AK Nart, A Gregores, EM Onengut, G Ozdemir, K Ozturk, S Gomez, G Polatoz, A Sahin, O Krofcheck, D Sengul, O Halkiadakis, E Sogut, K Tali, B Topakli, H Uzun, D Marinho, F Vergili, LN Vergili, M Sanchez, JG Demina, R Zorbilmez, C Akin, IV Hidas, D Aliev, T Bilmis, S Deniz, M Gamsizkan, H Guler, AM Ocalan, K Novaes, SF Tam, J Ozpineci, A Suarez, RG Serin, M Warchol, J Hits, D Sever, R Surat, UE Yildirim, E Zeyrek, M Deliomeroglu, M Sanchez, AK Demir, D Gulmez, E Halu, A Padula, SS Jorda, C Lath, A Isildak, B Kaya, M Kaya, O Ozbek, M Butler, PH Ozkorucuklu, S Sonmez, N Levchuk, L Bell, P Bostock, F Brooke, JJ Czellar, S Pardo, PL Darmenov, N Cheng, TL Signal, T Cussans, D Frazier, R Goldstein, J Hansen, M Heath, GP Heath, HF Hill, C Moser, R Huckvale, B Virto, AL Williams, JC Jackson, J Dimitrov, L Kreczko, L Mackay, CK Metson, S Newbold, DM Nirunpong, K Smith, VJ Rose, K Ward, S Ahmad, M Basso, L Caebergs, T Bell, KW Belyaev, A Genchev, V Brew, C Brown, RM Camanzi, B Cockerill, DJA Schnetzer, S Caudron, J Coughlan, JA Harder, K Harper, S Marco, J Kennedy, BW Olaiya, E Petyt, D Hoch, M Iaydjiev, P Radburn-Smith, BC Ahmed, I Somalwar, S Shepherd-Themistocleous, CH Tomalin, IR Womersley, WJ Worm, SD Marco, R Bainbridge, R Ball, G Ballin, J Beuselinck, R Asghar, MI Buchmuller, O Stone, R Piperov, S Colling, D Cripps, N Cutajar, M Davies, G Rivero, CM Della Negra, M Foudas, C Hoorani, HR Fulcher, J Futyan, D Thomas, S Bryer, AG Hall, G Stoykova, S Hatherell, Z Hays, J Iles, G del Arbol, PMR Flacher, H Karapostoli, G Lyons, L Magnan, AM Cerizza, G Marrouche, J Nandi, R Nash, J Nikitenko, A Sultanov, G Papageorgiou, A Khan, WA Pesaresi, M Matorras, F Petridis, K Pioppi, M Wayne, M Hollingsworth, M Raymond, DM Rompotis, N Rose, A Ryan, MJ Khurshid, T Seez, C Sharp, P Trayanov, R Sparrow, A Rodrigo, T Tapper, A Spanier, S Tourneur, S Acosta, MV Virdee, T Sawley, MC Wakefield, S Wardrope, D Whyntie, T Barrett, M Chadwick, M Vankov, I Jimeno, AR Yang, ZC Cole, JE Hobson, PR Qazi, S Khan, A Kyberd, P Leslie, D Reid, ID Teodorescu, L Bose, T Jarrin, EC Clough, A York, A Scodellaro, L Cwiok, M Dyulendarova, M Heister, A John, JS Lawson, P Lazic, D Rohlf, J Sulak, L Andrea, J Avetisyan, A Mozer, MU Dominik, W Bhattacharya, S Sanudo, MS Chou, JP Hadjiiska, R Cutts, D Esen, S Ferapontov, A Heintz, U Jabeen, S Kukartsev, G Doroba, K Liko, D 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Keywords: | Tevatron |
Issue Date: | 2010 |
Publisher: | Springer Verlag |
Citation: | European Physical Journal C: Particles and Fields, 70(3): 555 - 572, Dec 2010 |
Abstract: | A measurement of the underlying activity in scattering processes with transverse momentum scale in the GeV region is performed in proton-proton collisions at sqrt(s) = 0.9 TeV, using data collected by the CMS experiment at the LHC. Charged hadron production is studied with reference to the direction of a leading object, either a charged particle or a set of charged particles forming a jet. Predictions of several QCD-inspired models as implemented in PYTHIA are compared, after full detector simulation, to the data. The models generally predict too little production of charged hadrons with pseudorapidity eta < 2, p_T > 0.5 GeV/c, and azimuthal direction transverse to that of the leading object. |
Description: | This is the Pre-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2010 Springer Verlag |
URI: | http://www.springerlink.com/content/558l50703j1490g7/ http://bura.brunel.ac.uk/handle/2438/6216 |
DOI: | http://dx.doi.org/10.1140/epjc/s10052-010-1453-9 |
ISSN: | 1434-6044 |
Appears in Collections: | Electronic and Electrical Engineering Dept of Electronic and Electrical Engineering Research Papers
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