Title: | Measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P)) in pp collisions at √s = 8TeV |
Authors: | Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Erö, J Fabjan, C Friedl, M Frühwirth, R Ghete, VM Chamizo Llatas, M Meier, F Snow, GR Dolen, J Godshalk, A Iashvili, I Kharchilava, A Kumar, A Rappoccio, S Alverson, G Liko, D Colino, N Ban, Y Barberis, E Baumgartel, D Chasco, M Haley, J Massironi, A Morse, DM Nash, D Orimoto, T Trocino, D De La Cruz, B Wang, R-J Guo, Y Wood, D Zhang, J Hahn, KA Kubik, A Mucia, N Odell, N Pollack, B Pozdnyakov, A Delgado Peris, A Schmitt, M Stoynev, S Li, Q Sung, K Velasco, M Won, S Brinkerhoff, A Chan, KM Drozdetskiy, A Hildreth, M Domínguez Vázquez, D Jessop, C Karmgard, DJ Kellams, N Li, W Lannon, K Luo, W Lynch, S Marinelli, N Pearson, T Planer, M Escalante Del Valle, A Ruchti, R Valls, N Wayne, M Wolf, M Liu, S Woodard, A Antonelli, L Brinson, J Bylsma, B Durkin, LS Fernandez Bedoya, C Flowers, S Hill, C Hughes, R Kotov, K Ling, TY Mao, Y Puigh, D Rodenburg, M Smith, G Winer, BL Fernández Ramos, JP Wolfe, H Wulsin, HW Driga, O Elmer, P Hebda, P Hunt, A Qian, SJ Koay, SA Lujan, P Marlow, D Flix, J Medvedeva, T Mooney, M Olsen, J Piroué, P Quan, X Saka, H Stickland, D Wang, D Tully, C Werner, JS Fouz, MC Zenz, SC Zuranski, A Brownson, E Mendez, H Ramirez Vargas, JE Barnes, VE Benedetti, D Bolla, G Zhang, L Bortoletto, D Basegmez, S Favart, D De Mattia, M Hu, Z Jha, MK Jones, M Jung, K Kress, M Leonardo, N Lopes Pegna, D Maroussov, V Zou, W Garcia-Abia, P Merkel, P Miller, DH Neumeister, N Radburn-Smith, BC Shi, X Shipsey, I Silvers, D Svyatkovskiy, A Wang, F Xie, W Gonzalez Lopez, O Mikulec, I Avila, C Xu, L Yoo, HD Zablocki, J Zheng, Y Parashar, N Stupak, J Adair, A Akgun, B Goy Lopez, S Ecklund, KM Geurts, FJM Chaparro Sierra, LF Li, W Michlin, B Padley, BP Redjimi, R Roberts, J Zabel, J Betchart, B Hernandez, JM Bodek, A Covarelli, R de Barbaro, P Florez, C Demina, R Eshaq, Y Ferbel, T Garcia-Bellido, A Goldenzweig, P Han, J Josa, MI Harel, A Khukhunaishvili, A Petrillo, G Vishnevskiy, D Gomez, JP Ciesielski, R Demortier, L Goulianos, K Lungu, G Mesropian, C Merino, G Arora, S Barker, A Chou, JP Contreras-Campana, C Contreras-Campana, E Gomez Moreno, B Duggan, D Ferencek, D Gershtein, Y Gray, R Navarro De Martino, E Halkiadakis, E Hidas, D Kaplan, S Lath, A Panwalkar, S Park, M Sanabria, JC Patel, R Salur, S Schnetzer, S Pérez-Calero Yzquierdo, A Somalwar, S Stone, R Thomas, S Thomassen, P Walker, M Rose, K Spanier, S Godinovic, N York, A Bouhali, O Puerta Pelayo, J Castaneda Hernandez, A Eusebi, R Flanagan, W Gilmore, J Kamon, T Khotilovich, V Krutelyov, V Montalvo, R Lelas, D Osipenkov, I Skatchkov, N Quintario Olmeda, A Pakhotin, Y Perloff, A Roe, J Rose, A Safonov, A Sakuma, T Suarez, I Tatarinov, A Akchurin, N Polic, D Hartl, C Cowden, C Damgov, J Dragoiu, C Dudero, PR Faulkner, J Kovitanggoon, K Kunori, S Lee, SW Libeiro, T Volobouev, I Forthomme, L Puljak, I Appelt, E Delannoy, AG Greene, S Gurrola, A Johns, W Maguire, C Mao, Y Melo, A Sharma, M Redondo, I Sheldon, P Rabady, D Antunovic, Z Snook, B Tuo, S Velkovska, J Arenton, MW Boutle, S Cox, B Francis, B Romero, L Goodell, J Hirosky, R Ledovskoy, A Kovac, M Li, H Lin, C Neu, C Wood, J Clarke, C Harr, R Soares, MS Karchin, PE Kottachchi Kankanamge Don, C Lamichhane, P Sturdy, J Brigljevic, V Belknap, DA Carlsmith, D Cepeda, M Dasu, S Dodd, L Albajar, C Duric, S Friis, E Hall-Wilton, R Herndon, M Hervé, A Kadija, K Klabbers, P Lanaro, A Lazaridis, C Levine, A de Trocóniz, JF Loveless, R Mohapatra, A Ojalvo, I Perry, T Pierro, GA Polese, G Luetic, J Ross, I Sarangi, T Savin, A Missiroli, M Smith, WH Vuosalo, C Woods, N CMS, C Marzocchi, B Mekterovic, D Sudic, L Attikis, A Mavromanolakis, G Mousa, J Moran, D Rahbaran, B Nicolaou, C Ptochos, F Razis, PA Bodlak, M Finger, M Finger, M Assran, Y Ellithi Kamel, A Mahmoud, MA Smirnov, V Brun, H Radi, A Rohringer, H Kadastik, M Murumaa, M Raidal, M Tiko, A Eerola, P Fedi, G Voutilainen, M Härkönen, J Cuevas, J Karimäki, V Kinnunen, R Schöfbeck, R Kortelainen, MJ Lampén, T Lassila-Perini, K Lehti, S Lindén, T Luukka, P Mäenpää, T Fernandez Menendez, J Peltola, T Tuominen, E Tuominiemi, J Strauss, J Tuovinen, E Wendland, L Tuuva, T Besancon, M Couderc, F Dejardin, M Giammanco, A Denegri, D Fabbro, B Faure, JL Favaro, C Taurok, A Ferri, F Ganjour, S Givernaud, A Gras, P Hamel de Monchenault, G Folgueras, S Jarry, P Locci, E Malcles, J Rander, J Rosowsky, A Treberer-Treberspurg, W Titov, M Baffioni, S Beaudette, F Busson, P Gonzalez Caballero, I Charlot, C Dahms, T Dalchenko, M Dobrzynski, L Filipovic, N Florent, A Waltenberger, W Granier de Cassagnac, R Mastrolorenzo, L Miné, P Lloret Iglesias, L Mironov, C Naranjo, IN Nguyen, M Ochando, C Paganini, P Regnard, S Salerno, R Wulz, C-E Sauvan, JB Sirois, Y Brochero Cifuentes, JA Veelken, C Yilmaz, Y Zabi, A Agram, J-L Andrea, J Aubin, A Bloch, D Brom, J-M Mossolov, V Chabert, EC Cabrillo, IJ Collard, C Conte, E Fontaine, J-C Gelé, D Goerlach, U Goetzmann, C Le Bihan, A-C Van Hove, P Gadrat, S Shumeiko, N Calderon, A Beauceron, S Beaupere, N Boudoul, G Bouvier, E Brochet, S Carrillo Montoya, CA Chasserat, J Chierici, R Contardo, D Depasse, P Tikhonenko, E Duarte Campderros, J Suarez Gonzalez, J El Mamouni, H Fan, J Fay, J Gascon, S Gouzevitch, M Ille, B Kurca, T Lethuillier, M Mirabito, L Fernandez, M Perries, S Alderweireldt, S Ruiz Alvarez, JD Sabes, D Sgandurra, L Sordini, V Vander Donckt, M Verdier, P Viret, S Xiao, H Gomez, G Tsamalaidze, Z Autermann, C Bansal, M Beranek, S Bontenackels, M Edelhoff, M Feld, L Hindrichs, O Klein, K Ostapchuk, A Graziano, A Perieanu, A Raupach, F Sammet, J Bansal, S Schael, S Weber, H Wittmer, B Zhukov, V Ata, M Dietz-Laursonn, E Hollar, J Duchardt, D Erdmann, M Fischer, R Güth, A Cornelis, T Hebbeker, T Heidemann, C Hoepfner, K Klingebiel, D Knutzen, S Lopez Virto, A Kreuzer, P Merschmeyer, M Meyer, A Millet, P Olschewski, M De Wolf, EA Padeken, K Papacz, P Reithler, H Schmitz, SA Marco, J Sonnenschein, L Teyssier, D Thüer, S Weber, M Cherepanov, V Erdogan, Y Janssen, X Flügge, G Geenen, H Geisler, M Marco, R Haj Ahmad, W Heister, A Hoehle, F Kargoll, B Kress, T Kuessel, Y Lingemann, J Knutsson, A Nowack, A Nugent, IM Martinez Rivero, C Perchalla, L Pooth, O Stahl, A Asin, I Bartosik, N Behr, J Behrenhoff, W Behrens, U Luyckx, S Bell, AJ Matorras, F Bergholz, M Bethani, A Borras, K Burgmeier, A Cakir, A Calligaris, L Campbell, A Choudhury, S Costanza, F Ochesanu, S Yuldashev, BS Munoz Sanchez, FJ Diez Pardos, C Dooling, S Dorland, T Eckerlin, G Eckstein, D Eichhorn, T Flucke, G Garay Garcia, J Geiser, A Gunnellini, P Piedra Gomez, J Roland, B Hauk, J Hempel, M Horton, D Jung, H Kalogeropoulos, A Kasemann, M Katsas, P Kieseler, J Kleinwort, C Rodrigo, T Krücker, D Rougny, R Lange, W Leonard, J Lipka, K Lobanov, A Lohmann, W Lutz, B Mankel, R Marfin, I Rodríguez-Marrero, AY Melzer-Pellmann, I-A Meyer, AB Van De Klundert, M Mittag, G Mnich, J Mussgiller, A Naumann-Emme, S Nayak, A Novgorodova, O Nowak, F Ruiz-Jimeno, A Ntomari, E Perrey, H Pitzl, D Van Haevermaet, H Placakyte, R Raspereza, A Ribeiro Cipriano, PM Ron, E Sahin, MO Salfeld-Nebgen, J Jez, P Saxena, P Schmidt, R Schoerner-Sadenius, T Schröder, M Van Mechelen, P Seitz, C Spannagel, S Vargas Trevino, ADR Walsh, R Wissing, C Scodellaro, L Aldaya Martin, M Blobel, V Centis Vignali, M Draeger, AR Erfle, J Van Remortel, N Garutti, E Goebel, K Görner, M Haller, J Vila, I Hoffmann, M Höing, RS Kirschenmann, H Klanner, R Kogler, R Lange, J Van Spilbeeck, A Lapsien, T Lenz, T Marchesini, I Vilar Cortabitarte, R Ott, J Peiffer, T Pietsch, N Poehlsen, J Poehlsen, T Rathjens, D Sander, C Blekman, F Schettler, H Schleper, P Abbaneo, D Schlieckau, E Schmidt, A Seidel, M Sola, V Stadie, H Steinbrück, G Troendle, D Usai, E Blyweert, S Vanelderen, L Zarubin, A Auffray, E Barth, C Baus, C Berger, J Böser, C Butz, E Chwalek, T De Boer, W Descroix, A Dierlamm, A D'Hondt, J Auzinger, G Feindt, M Frensch, F Giffels, M Hartmann, F Hauth, T Husemann, U Katkov, I Kornmayer, A Kuznetsova, E Lobelle Pardo, P Bachtis, M Daci, N Mozer, MU Müller, T Nürnberg, A Quast, G Rabbertz, K Ratnikov, F Röcker, S Simonis, HJ Stober, FM Baillon, P Ulrich, R Heracleous, N Wagner-Kuhr, J Wayand, S Weiler, T Wolf, R Anagnostou, G Daskalakis, G Geralis, T Giakoumopoulou, VA Ball, AH Kyriakis, A Loukas, D Keaveney, J Markou, A Markou, C Psallidas, A Topsis-Giotis, I Kesisoglou, S Panagiotou, A Saoulidou, N Barney, D Stiliaris, E Aslanoglou, X Evangelou, I Lowette, S Flouris, G Foudas, C Kokkas, P Manthos, N Papadopoulos, I Paradas, E Komm, M Bencze, G Hajdu, C Hidas, P Horvath, D Maes, M Sikler, F Veszpremi, V Vesztergombi, G Zsigmond, AJ Beni, N Benaglia, A Czellar, S Karancsi, J Molnar, J Palinkas, J Szillasi, Z Olbrechts, A Raics, P Trocsanyi, ZL Ujvari, B Swain, SK Bendavid, J Beri, SB Bhatnagar, V Dhingra, N Gupta, R Bhawandeep, U Kalsi, AK Python, Q Kaur, M Mittal, M Nishu, N Benhabib, L Singh, JB Kumar, A Kumar, A Ahuja, S Bhardwaj, A Choudhary, BC Kumar, A Strom, D Malhotra, S Naimuddin, M Golovtsov, V Benitez, JF Ranjan, K Sharma, V Banerjee, S Bhattacharya, S Chatterjee, K Dutta, S Gomber, B Jain, S Tavernier, S Jain, S Bernet, C Khurana, R Modak, A Mukherjee, S Roy, D Sarkar, S Sharan, M Abdulsalam, A Dutta, D Kailas, S Van Doninck, W Bianchi, G Kumar, V Mohanty, AK Pant, LM Shukla, P Topkar, A Aziz, T Banerjee, S Bhowmik, S Chatterjee, RM Dewanjee, RK Bloch, P Van Mulders, P Dugad, S Ganguly, S Ghosh, S Guchait, M Gurtu, A Kole, G Kumar, S Maity, M Majumder, G Bocci, A Mazumdar, K Van Onsem, GP Mohanty, GB Parida, B Sudhakar, K Wickramage, N Bakhshiansohi, H Behnamian, H Etesami, SM Fahim, A Bonato, A Goldouzian, R Jafari, A Villella, I Khakzad, M Mohammadi Najafabadi, M Naseri, M Paktinat Mehdiabadi, S Rezaei Hosseinabadi, F Safarzadeh, B Zeinali, M Bondu, O Felcini, M Grunewald, M Abbrescia, M Caillol, C Barbone, L Calabria, C Chhibra, SS Colaleo, A Creanza, D De Filippis, N Lemaitre, V De Palma, M Fiore, L Iaselli, G Maggi, G Clerbaux, B Maggi, M My, S Nuzzo, S Pompili, A Pugliese, G Botta, C Radogna, R Selvaggi, G Silvestris, L Singh, G Venditti, R De Lentdecker, G Verwilligen, P Zito, G Abbiendi, G Benvenuti, AC Breuker, H Bonacorsi, D Braibant-Giacomelli, S Brigliadori, L Campanini, R Capiluppi, P Castro, A Dobur, D Cavallo, FR Codispoti, G Cuffiani, M Ivanov, Y Camporesi, T Dallavalle, GM Fabbri, F Fanfani, A Fasanella, D Giacomelli, P Grandi, C Guiducci, L Favart, L Marcellini, S Masetti, G Cerminara, G Montanari, A Navarria, FL Perrotta, A Primavera, F Rossi, AM Rovelli, T Siroli, GP Tosi, N Gay, APR Travaglini, R Colafranceschi, S Albergo, S Cappello, G Chiorboli, M Costa, S Giordano, F Potenza, R Tricomi, A Tuve, C Barbagli, G Grebenyuk, A D'Alfonso, M Ciulli, V Civinini, C D'Alessandro, R Focardi, E Gallo, E Gonzi, S Gori, V Lenzi, P Meschini, M Paoletti, S d'Enterria, D Léonard, A Sguazzoni, G Tropiano, A Benussi, L Bianco, S Fabbri, F Piccolo, D Ferro, F Lo Vetere, M Robutti, E Dabrowski, A Tosi, S Mohammadi, A Dinardo, ME Fiorendi, S Gennai, S Gerosa, R Ghezzi, A Govoni, P Lucchini, MT Malvezzi, S David, A Manzoni, RA Martelli, A Perniè, L Menasce, D Moroni, L Paganoni, M Pedrini, D Ragazzi, S Redaelli, N Tabarelli de Fatis, T De Guio, F Buontempo, S Cavallo, N Di Guida, S Reis, T Fabozzi, F Iorio, AOM Lista, L Meola, S Merola, M Paolucci, P Nuttens, C Azzi, P Bacchetta, N Bisello, D Branca, A Seva, T Carlin, R Checchia, P Dall'Osso, M Dorigo, T Dosselli, U De Roeck, A Galanti, M Gasparini, F Gasparini, U Giubilato, P Gonella, F Thomas, L Gozzelino, A Kanishchev, K Lacaprara, S Margoni, M Kim, V De Visscher, S Montecassiano, F Pazzini, J Pozzobon, N Ronchese, P Simonetto, F Tosi, M Vander Velde, C Zotto, P Zucchetta, A Zumerle, G Dobson, M Gabusi, M Ratti, SP Riccardi, C Salvini, P Vitulo, P Biasini, M Bilei, GM Vanlaer, P Ciangottini, D Fanò, L Dordevic, M Lariccia, P Mantovani, G Menichelli, M Romeo, F Saha, A Santocchia, A Spiezia, A Androsov, K Wang, J Azzurri, P Dupont-Sagorin, N Bagliesi, G Bernardini, J Boccali, T Broccolo, G Castaldi, R Ciocci, MA Dell'Orso, R Donato, S Fiori, F Adler, V Elliott-Peisert, A Foà, L Giassi, A Grippo, MT Ligabue, F Lomtadze, T Martini, L Messineo, A Moon, CS Palla, F Rizzi, A Eugster, J Beernaert, K Savoy-Navarro, A Serban, AT Spagnolo, P Squillacioti, P Tenchini, R Tonelli, G Venturi, A Verdini, PG Vernieri, C Franzoni, G Barone, L Benucci, L Cavallari, F D'imperio, G Del Re, D Diemoz, M Grassi, M Jorda, C Longo, E Margaroli, F Funk, W Meridiani, P Micheli, F Cimmino, A Nourbakhsh, S Organtini, G Paramatti, R Rahatlou, S Rovelli, C Santanastasio, F Soffi, L Gigi, D Traczyk, P Amapane, N Arcidiacono, R Costantini, S Argiro, S Arneodo, M Bellan, R Biino, C Cartiglia, N Casasso, S Pagano, D Costa, M Degano, A Demaria, N Dujany, G Crucy, S Finco, L Mariotti, C Maselli, S Migliore, E Monaco, V Levchenko, P Gill, K Musich, M Obertino, MM Ortona, G Pacher, L Pastrone, N Dildick, S Pelliccioni, M Pinna Angioni, GL Potenza, A Romero, A Giordano, D Ruspa, M Sacchi, R Solano, A Staiano, A Tamponi, U Belforte, S Fagot, A Candelise, V Casarsa, M Cossutti, F Girone, M Della Ricca, G Gobbo, B La Licata, C Marone, M Montanino, D Schizzi, A Umer, T Garcia, G Zanetti, A Chang, S Glege, F Kropivnitskaya, A Nam, SK Kim, DH Kim, GN Kim, MS Kong, DJ Lee, S Oh, YD Mccartin, J Park, H Guida, R Sakharov, A Son, DC Kim, TJ Kim, JY Song, S Choi, S Gyun, D Hong, B Jo, M Ocampo Rios, AA Gundacker, S Kim, H Kim, Y Lee, B Lee, KS Park, SK Roh, Y Choi, M Kim, JH Park, IC Park, S Guthoff, M Ryckbosch, D Ryu, G Ryu, MS Choi, Y Choi, YK Goh, J Kim, D Kwon, E Lee, J Seo, H Hammer, J Yu, I Salva Diblen, S Juodagalvis, A Komaragiri, JR Md Ali, MAB Castilla-Valdez, H De La Cruz-Burelo, E Heredia-de La Cruz, I Lopez-Fernandez, R Sanchez-Hernandez, A Hansen, M Carrillo Moreno, S Vazquez Valencia, F Sigamani, M Pedraza, I Salazar Ibarguen, HA Casimiro Linares, E Morelos Pineda, A Krofcheck, D Butler, PH Reucroft, S Harris, P Ahmad, A Ahmad, M Hassan, Q Strobbe, N Hoorani, HR Khalid, S Khan, WA Khurshid, T Shah, MA Shoaib, M Murzin, V Perrini, L Bialkowska, H Bluj, M Boimska, B Frueboes, T Thyssen, F Górski, M Kazana, M Nawrocki, K Romanowska-Rybinska, K Szleper, M Hegeman, J Zalewski, P Brona, G Bunkowski, K Cwiok, M Dominik, W Tytgat, M Doroba, K Kalinowski, A Konecki, M Krolikowski, J Innocente, V Misiura, M Olszewski, M Wolszczak, W Bargassa, P Beirão Da Cruz E Silva, C Faccioli, P Yazgan, E Ferreira Parracho, PG Gallinaro, M Nguyen, F Janot, P Rodrigues Antunes, J Seixas, J Varela, J Vischia, P Golutvin, I Gorbunov, I Karjavin, V Zaganidis, N Konoplyanikov, V Korenkov, V Kousouris, K Lanev, A Malakhov, A Matveev, V Mitsyn, VV Moisenz, P Palichik, V Perelygin, V Shmatov, S Krajczar, K Lecoq, P Lourenço, C Magini, N Malgeri, L Beluffi, C Mannelli, M Pin, A Marrouche, J Masetti, L Meijers, F Mersi, S Meschi, E Moortgat, F Morovic, S Mulders, M Oreshkin, V Musella, P Orsini, L Hörmann, N Piotrzkowski, K Pape, L Perez, E Perrozzi, L Petrilli, A Petrucciani, G Pfeiffer, A Smirnov, I Pierini, M Pimiä, M Piparo, D Plagge, M Popov, A Racz, A Rolandi, G Rovere, M Sakulin, H Schäfer, C Sulimov, V Schwick, C Sharma, A Siegrist, P Silva, P Simon, M Quertenmont, L Sphicas, P Spiga, D Steggemann, J Stieger, B Uvarov, L Stoye, M Treille, D Tsirou, A Veres, GI Vlimant, JR Wardle, N Selvaggi, M Wöhri, HK Wollny, H Zeuner, WD Vavilov, S Bertl, W Deiters, K Erdmann, W Horisberger, R Ingram, Q Kaestli, HC Kotlinski, D Vidal Marono, M Langenegger, U Renker, D Vorobyev, A Rohe, T Bachmair, F Bäni, L Bianchini, L Bortignon, P Buchmann, MA Casal, B Chanon, N Vizan Garcia, JM Deisher, A Vorobyev, A Dissertori, G Dittmar, M Donegà, M Dünser, M Eller, P Grab, C Hits, D Lustermann, W Mangano, B Beliy, N Andreev, Y Marini, AC Martinez Ruiz del Arbol, P Meister, D Mohr, N Nägeli, C Nessi-Tedaldi, F Pandolfi, F Pauss, F Peruzzi, M Quittnat, M Dermenev, A Caebergs, T Rebane, L Rossini, M Starodumov, A Takahashi, M Theofilatos, K Wallny, R Weber, HA Amsler, C Canelli, MF Gninenko, S Chiochia, V Daubie, E De Cosa, A Hinzmann, A Hreus, T Kilminster, B Lange, C Millan Mejias, B Ngadiuba, J Robmann, P Bruno, G Ronga, FJ Taroni, S Hammad, GH Verzetti, M Yang, Y Cardaci, M Chen, KH Ferro, C Kuo, CM Lin, W Golubev, N Lu, YJ Volpe, R Yu, SS Hrubec, J Aldá Júnior, WL Chang, P Chang, YH Chang, YW Chao, Y Chen, KF Kirsanov, M Chen, PH Dietz, C Grundler, U Hou, W-S Kao, KY Alves, GA Lei, YJ Liu, YF Lu, R-S Majumder, D Krasnikov, N Petrakou, E Tzeng, YM Wilken, R Asavapibhop, B Srimanobhas, N Suwonjandee, N Brito, L Adiguzel, A Bakirci, MN Cerci, S Pashenkov, A Dozen, C Dumanoglu, I Eskut, E Girgis, S Gokbulut, G Gurpinar, E Hos, I Correa Martins Junior, M Kangal, EE Kayis Topaksu, A Tlisov, D Onengut, G Ozdemir, K Ozturk, S Polatoz, A Sogut, K Sunar Cerci, D Tali, B Topakli, H Dos Reis Martins, T Vergili, M Toropin, A Akin, IV Bilin, B Bilmis, S Gamsizkan, H Karapinar, G Ocalan, K 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Keywords: | Bottomonium;CMS;P-wave states;Quarkonium production |
Issue Date: | 2015 |
Publisher: | Elsevier |
Citation: | Physics Letters B, 743: 383 - 402, (9 April 2015) |
Abstract: | A measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P)) is presented. The χb1(1P) and χb2(1P) bottomonium states, promptly produced in pp collisions at s=8TeV, are detected by the CMS experiment at the CERN LHC through their radiative decays χb1,2(1P)→ϒ(1S)+γ. The emitted photons are measured through their conversion to e+e- pairs, whose reconstruction allows the two states to be resolved. The ϒ(1S) is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7fb-1 is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, |ηγ|<1.0; the ϒ(1S) rapidity, |yϒ|<1.5; and the ϒ(1S) transverse momentum, 7<pTϒ<40GeV. The cross section ratio shows no significant dependence on the ϒ(1S) transverse momentum, with a measured average value of 0.85±0.07(stat+syst)±0.08(BF), where the first uncertainty is the combination of the experimental statistical and systematic uncertainties and the second is from the uncertainty in the ratio of the χb branching fractions. |
URI: | http://www.sciencedirect.com/science/article/pii/S0370269315001392# http://bura.brunel.ac.uk/handle/2438/10617 |
DOI: | http://dx.doi.org/10.1016/j.physletb.2015.02.048 |
ISSN: | 0370-2693 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers
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