First measurement of Bose-Einstein correlations in proton-proton collisions at √s=0.9 and 2.36 TeV at the LHC.
Physical review letters 105:3 (2010) 032001
Authors:
V Khachatryan, AM Sirunyan, A Tumasyan, W Adam, T Bergauer, M Dragicevic, J Erö, C Fabjan, M Friedl, R Frühwirth, VM Ghete, J Hammer, S Hänsel, M Hoch, N Hörmann, J Hrubec, M Jeitler, G Kasieczka, W Kiesenhofer, M Krammer, D Liko, I Mikulec, M Pernicka, H Rohringer, R Schöfbeck, J Strauss, A Taurok, F Teischinger, W Waltenberger, G Walzel, E Widl, C-E Wulz, V Mossolov, N Shumeiko, J Suarez Gonzalez, L Benucci, L Ceard, EA De Wolf, M Hashemi, X Janssen, T Maes, L Mucibello, S Ochesanu, B Roland, R Rougny, M Selvaggi, H Van Haevermaet, P Van Mechelen, N Van Remortel, V Adler, S Beauceron, S Blyweert, J D'Hondt, O Devroede, A Kalogeropoulos, J Maes, M Maes, S Tavernier, W Van Doninck, P Van Mulders, I Villella, EC Chabert, O Charaf, B Clerbaux, G De Lentdecker, V Dero, APR Gay, GH Hammad, PE Marage, C Vander Velde, P Vanlaer, J Wickens, S Costantini, M Grunewald, B Klein, A Marinov, D Ryckbosch, F Thyssen, M Tytgat, L Vanelderen, P Verwilligen, S Walsh, N Zaganidis, S Basegmez, G Bruno, J Caudron, J De Favereau De Jeneret, C Delaere, P Demin, D Favart, A Giammanco, G Grégoire, J Hollar, V Lemaitre, O Militaru, S Ovyn, D Pagano, A Pin, K Piotrzkowski, L Quertenmont, N Schul, N Beliy, T Caebergs, E Daubie, GA Alves, ME Pol, MHG Souza, W Carvalho, EM Da Costa, D De Jesus Damiao, C De Oliveira Martins, S Fonseca De Souza, L Mundim, V Oguri, A Santoro, SM Silva Do Amaral, A Sznajder, F Torres Da Silva De Araujo, FA Dias, MAF Dias, TR Fernandez Perez Tomei, EM Gregores, F Marinho, SF Novaes, Sandra S Padula, N Darmenov, L Dimitrov, V Genchev, P Iaydjiev, S Piperov, S Stoykova, G Sultanov, R Trayanov, I Vankov, M Dyulendarova, R Hadjiiska, V Kozhuharov, L Litov, E Marinova, M Mateev, B Pavlov, P Petkov, JG Bian, GM Chen, HS Chen, CH Jiang, D Liang, S Liang, J Wang, J Wang, X Wang, Z Wang, M Yang, J Zang, Z Zhang, Y Ban, S Guo, Z Hu, Y Mao, SJ Qian, H Teng, B Zhu, A Cabrera, CA Carrillo Montoya, B Gomez Moreno, AA Ocampo Rios, AF Osorio Oliveros, JC Sanabria, N Godinovic, D Lelas, K Lelas, R Plestina, D Polic, I Puljak, Z Antunovic, M Dzelalija, V Brigljevic, S Duric, K Kadija, S Morovic, A Attikis, R Fereos, M Galanti, J Mousa, C Nicolaou, A Papadakis, F Ptochos, PA Razis, H Rykaczewski, D Tsiakkouri, Z Zinonos, M Mahmoud, A Hektor, M Kadastik, K Kannike, M Müntel, M Raidal, L Rebane, V Azzolini, P Eerola, S Czellar, J Härkönen, A Heikkinen, V Karimäki, R Kinnunen, J Klem, MJ Kortelainen, T Lampén, K Lassila-Perini, S Lehti, T Lindén, P Luukka, T Mäenpää, E Tuominen, J Tuominiemi, E Tuovinen, D Ungaro, L Wendland, K Banzuzi, A Korpela, T Tuuva, D Sillou, M Besancon, M Dejardin, D Denegri, J Descamps, B Fabbro, JL Faure, F Ferri, S Ganjour, FX Gentit, A Givernaud, P Gras, G Hamel de Monchenault, P Jarry, E Locci, J Malcles, M Marionneau, L Millischer, J Rander, A Rosowsky, D Rousseau, M Titov, P Verrecchia, S Baffioni, L Bianchini, M Bluj, C Broutin, P Busson, C Charlot, L Dobrzynski, S Elgammal, R Granier de Cassagnac, M Haguenauer, A Kalinowski, P Miné, P Paganini, D Sabes, Y Sirois, C Thiebaux, A Zabi, J-L Agram, A Besson, D Bloch, D Bodin, J-M Brom, M Cardaci, E Conte, F Drouhin, C Ferro, J-C Fontaine, D Gelé, U Goerlach, S Greder, P Juillot, M Karim, A-C Le Bihan, Y Mikami, J Speck, P Van Hove, F Fassi, D Mercier, C Baty, N Beaupere, M Bedjidian, O Bondu, G Boudoul, D Boumediene, H Brun, N Chanon, R Chierici, D Contardo, P Depasse, H El Mamouni, J Fay, S Gascon, B Ille, T Kurca, T Le Grand, M Lethuillier, L Mirabito, S Perries, V Sordini, S Tosi, Y Tschudi, P Verdier, H Xiao, V Roinishvili, G Anagnostou, M Edelhoff, L Feld, N Heracleous, O Hindrichs, R Jussen, K Klein, J Merz, N Mohr, A Ostapchuk, A Perieanu, F Raupach, J Sammet, S Schael, D Sprenger, H Weber, M Weber, B Wittmer, O Actis, M Ata, W Bender, P Biallass, M Erdmann, J Frangenheim, T Hebbeker, A Hinzmann, K Hoepfner, C Hof, M Kirsch, T Klimkovich, P Kreuzer, D Lanske, C Magass, M Merschmeyer, A Meyer, P Papacz, H Pieta, H Reithler, SA Schmitz, L Sonnenschein, M Sowa, J Steggemann, D Teyssier, C Zeidler, M Bontenackels, M Davids, M Duda, G Flügge, H Geenen, M Giffels, W Haj Ahmad, D Heydhausen, T Kress, Y Kuessel, A Linn, A Nowack, L Perchalla, O Pooth, P Sauerland, A Stahl, M Thomas, D Tornier, MH Zoeller, M Aldaya Martin, W Behrenhoff, U Behrens, M Bergholz, K Borras, A Campbell, E Castro, D Dammann, G Eckerlin, A Flossdorf, G Flucke, A Geiser, J Hauk, H Jung, M Kasemann, I Katkov, C Kleinwort, H Kluge, A Knutsson, E Kuznetsova, W Lange, W Lohmann, R Mankel, M Marienfeld, I-A Melzer-Pellmann, AB Meyer, J Mnich, A Mussgiller, J Olzem, A Parenti, A Raspereza, R Schmidt, T Schoerner-Sadenius, N Sen, M Stein, J Tomaszewska, D Volyanskyy, C Wissing, C Autermann, J Draeger, D Eckstein, H Enderle, U Gebbert, K Kaschube, G Kaussen, R Klanner, B Mura, S Naumann-Emme, F Nowak, C Sander, H Schettler, P Schleper, M Schröder, T Schum, J Schwandt, H Stadie, G Steinbrück, J Thomsen, R Wolf, J Bauer, V Buege, A Cakir, T Chwalek, D Daeuwel, W De Boer, A Dierlamm, G Dirkes, M Feindt, J Gruschke, C Hackstein, F Hartmann, M Heinrich, H Held, KH Hoffmann, S Honc, T Kuhr, D Martschei, S Mueller, Th Müller, M Niegel, O Oberst, A Oehler, J Ott, T Peiffer, D Piparo, G Quast, K Rabbertz, F Ratnikov, M Renz, A Sabellek, C Saout, A Scheurer, P Schieferdecker, F-P Schilling, G Schott, HJ Simonis, FM Stober, D Troendle, J Wagner-Kuhr, M Zeise, V Zhukov, EB Ziebarth, G Daskalakis, T Geralis, A Kyriakis, D Loukas, I Manolakos, A Markou, C Markou, C Mavrommatis, E Petrakou, L Gouskos, P Katsas, A Panagiotou, I Evangelou, P Kokkas, N Manthos, I Papadopoulos, V Patras, FA Triantis, A Aranyi, G Bencze, L Boldizsar, G Debreczeni, C Hajdu, D Horvath, A Kapusi, K Krajczar, A Laszlo, F Sikler, G Vesztergombi, N Beni, J Molnar, J Palinkas, Z Szillasi, V Veszpremi, P Raics, ZL Trocsanyi, B Ujvari, S Bansal, S Bansal, SB Beri, V Bhatnagar, M Jindal, M Kaur, JM Kohli, MZ Mehta, N Nishu, LK Saini, A Sharma, R Sharma, AP Singh, JB Singh, SP Singh, S Ahuja, S Bhattacharya, S Chauhan, BC Choudhary, P Gupta, S Jain, S Jain, A Kumar, K Ranjan, RK Shivpuri, RK Choudhury, D Dutta, S Kailas, SK Kataria, AK Mohanty, LM Pant, P Shukla, P Suggisetti, T Aziz, M Guchait, A Gurtu, M Maity, D Majumder, G Majumder, K Mazumdar, GB Mohanty, A Saha, K Sudhakar, N Wickramage, S Banerjee, S Dugad, NK Mondal, H Arfaei, H Bakhshiansohi, A Fahim, A Jafari, M Mohammadi Najafabadi, S Paktinat Mehdiabadi, B Safarzadeh, M Zeinali, M Abbrescia, L Barbone, A Colaleo, D Creanza, N De Filippis, M De Palma, A Dimitrov, F Fedele, L Fiore, G Iaselli, L Lusito, G Maggi, M Maggi, N Manna, B Marangelli, S My, S Nuzzo, GA Pierro, A Pompili, G Pugliese, F Romano, G Roselli, G Selvaggi, L Silvestris, R Trentadue, S Tupputi, G Zito, G Abbiendi, AC Benvenuti, D Bonacorsi, S Braibant-Giacomelli, P Capiluppi, A Castro, FR Cavallo, G Codispoti, M Cuffiani, A Fanfani, D Fasanella, P Giacomelli, M Giunta, C Grandi, S Marcellini, G Masetti, A Montanari, FL Navarria, F Odorici, A Perrotta, AM Rossi, T 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Carroll, T Ferguson, DW Jang, SY Jun, M Paulini, J Russ, N Terentyev, H Vogel, I Vorobiev, JP Cumalat, ME Dinardo, BR Drell, WT Ford, B Heyburn, E Luiggi Lopez, U Nauenberg, JG Smith, K Stenson, KA Ulmer, SR Wagner, SL Zang, L Agostino, J Alexander, F Blekman, A Chatterjee, S Das, N Eggert, LJ Fields, LK Gibbons, B Heltsley, W Hopkins, A Khukhunaishvili, B Kreis, V Kuznetsov, G Nicolas Kaufman, JR Patterson, D Puigh, D Riley, A Ryd, X Shi, W Sun, WD Teo, J Thom, J Thompson, J Vaughan, Y Weng, P Wittich, A Biselli, G Cirino, D Winn, S Abdullin, M Albrow, J Anderson, G Apollinari, M Atac, JA Bakken, S Banerjee, LAT Bauerdick, A Beretvas, J Berryhill, PC Bhat, I Bloch, F Borcherding, K Burkett, JN Butler, V Chetluru, HWK Cheung, F Chlebana, S Cihangir, M Demarteau, DP Eartly, VD Elvira, I Fisk, J Freeman, Y Gao, E Gottschalk, D Green, O Gutsche, A Hahn, J Hanlon, RM Harris, E James, H Jensen, M Johnson, U Joshi, R Khatiwada, B Kilminster, B Klima, K Kousouris, S Kunori, S Kwan, P Limon, R Lipton, J Lykken, K Maeshima, JM Marraffino, D Mason, P McBride, T McCauley, T Miao, K Mishra, S Mrenna, Y Musienko, C Newman-Holmes, V O'Dell, S Popescu, R Pordes, O Prokofyev, N Saoulidou, E Sexton-Kennedy, S Sharma, RP Smith, A Soha, WJ Spalding, L Spiegel, P Tan, L Taylor, S Tkaczyk, L Uplegger, EW Vaandering, R Vidal, J Whitmore, W Wu, F Yumiceva, JC Yun, D Acosta, P Avery, D Bourilkov, M Chen, GP Di Giovanni, D Dobur, A Drozdetskiy, RD Field, Y Fu, IK Furic, J Gartner, B Kim, S Klimenko, J Konigsberg, A Korytov, K Kotov, A Kropivnitskaya, T Kypreos, K Matchev, G Mitselmakher, Y Pakhotin, J Piedra Gomez, C Prescott, R Remington, M Schmitt, B Scurlock, P Sellers, D Wang, J Yelton, M Zakaria, C Ceron, V Gaultney, L Kramer, LM Lebolo, S Linn, P Markowitz, G Martinez, D Mesa, JL Rodriguez, T Adams, A Askew, J Chen, B Diamond, SV Gleyzer, J Haas, S Hagopian, V Hagopian, M Jenkins, KF Johnson, H Prosper, S Sekmen, V Veeraraghavan, MM Baarmand, S Guragain, M Hohlmann, H Kalakhety, H Mermerkaya, R Ralich, I Vodopiyanov, MR Adams, IM Anghel, L Apanasevich, VE Bazterra, RR Betts, J Callner, R Cavanaugh, C Dragoiu, EJ Garcia-Solis, CE Gerber, DJ Hofman, S Khalatian, F Lacroix, E Shabalina, A Smoron, D Strom, N Varelas, U Akgun, EA Albayrak, B Bilki, K Cankocak, W Clarida, F Duru, CK Lae, E McCliment, J-P Merlo, A Mestvirishvili, A Moeller, J Nachtman, CR Newsom, E Norbeck, J Olson, Y Onel, F Ozok, S Sen, J Wetzel, T Yetkin, K Yi, BA Barnett, B Blumenfeld, A Bonato, C Eskew, D Fehling, G Giurgiu, AV Gritsan, ZJ Guo, G Hu, P Maksimovic, S Rappoccio, M Swartz, NV Tran, A Whitbeck, P Baringer, A Bean, G Benelli, O Grachov, M Murray, V Radicci, S Sanders, JS Wood, V Zhukova, D Bandurin, T Bolton, I Chakaberia, A Ivanov, K Kaadze, Y Maravin, S Shrestha, I Svintradze, Z Wan, J Gronberg, D Lange, D Wright, D Baden, M Boutemeur, SC Eno, D Ferencek, NJ Hadley, RG Kellogg, M Kirn, A Mignerey, K Rossato, P Rumerio, F Santanastasio, A Skuja, J Temple, MB Tonjes, SC Tonwar, E Twedt, B Alver, G Bauer, J Bendavid, W Busza, E Butz, IA Cali, M Chan, D D'Enterria, P Everaerts, G Gomez Ceballos, M Goncharov, KA Hahn, P Harris, Y Kim, M Klute, Y-J Lee, W Li, C Loizides, PD Luckey, T Ma, S Nahn, C Paus, C Roland, G Roland, M Rudolph, GSF Stephans, K Sumorok, K Sung, EA Wenger, B Wyslouch, S Xie, Y Yilmaz, AS Yoon, M Zanetti, P Cole, SI Cooper, P Cushman, B Dahmes, A De Benedetti, PR Dudero, G Franzoni, J Haupt, K Klapoetke, Y Kubota, J Mans, V Rekovic, R Rusack, M Sasseville, A Singovsky, LM Cremaldi, R Godang, R Kroeger, L Perera, R Rahmat, DA Sanders, P Sonnek, D Summers, K Bloom, S Bose, J Butt, DR Claes, A Dominguez, M Eads, J Keller, T Kelly, I Kravchenko, J Lazo-Flores, C Lundstedt, H Malbouisson, S Malik, GR Snow, U Baur, I Iashvili, A Kharchilava, A Kumar, K Smith, M Strang, J Zennamo, G Alverson, E Barberis, D Baumgartel, O Boeriu, S Reucroft, J Swain, D Wood, J Zhang, A Anastassov, A Kubik, RA Ofierzynski, A Pozdnyakov, M Schmitt, S Stoynev, M Velasco, S Won, L Antonelli, D Berry, M Hildreth, C Jessop, DJ Karmgard, J Kolb, T Kolberg, K Lannon, S Lynch, N Marinelli, DM Morse, R Ruchti, J Slaunwhite, N Valls, J Warchol, M Wayne, J Ziegler, B Bylsma, LS Durkin, J Gu, P Killewald, TY Ling, G Williams, N Adam, E Berry, P Elmer, D Gerbaudo, V Halyo, A Hunt, J Jones, E Laird, D Lopes Pegna, D Marlow, T Medvedeva, M Mooney, J Olsen, P Piroué, D Stickland, C Tully, JS Werner, A Zuranski, JG Acosta, XT Huang, A Lopez, H Mendez, S Oliveros, JE Ramirez Vargas, A Zatzerklyaniy, E Alagoz, VE Barnes, G Bolla, L Borrello, D Bortoletto, A Everett, AF Garfinkel, Z Gecse, L Gutay, M Jones, O Koybasi, AT Laasanen, N Leonardo, C Liu, V Maroussov, P Merkel, DH Miller, N Neumeister, K Potamianos, I Shipsey, D Silvers, HD Yoo, J Zablocki, Y Zheng, P Jindal, N Parashar, V Cuplov, KM Ecklund, FJM Geurts, JH Liu, J Morales, BP Padley, R Redjimi, J Roberts, B Betchart, A Bodek, YS Chung, P de Barbaro, R Demina, H Flacher, A Garcia-Bellido, Y Gotra, J Han, A Harel, DC Miner, D Orbaker, G Petrillo, D Vishnevskiy, M Zielinski, A Bhatti, L Demortier, K Goulianos, K Hatakeyama, G Lungu, C Mesropian, M Yan, O Atramentov, Y Gershtein, R Gray, E Halkiadakis, D Hidas, D Hits, A Lath, K Rose, S Schnetzer, S Somalwar, R Stone, S Thomas, G Cerizza, M Hollingsworth, S Spanier, ZC Yang, A York, J Asaadi, R Eusebi, J Gilmore, A Gurrola, T Kamon, V Khotilovich, R Montalvo, CN Nguyen, J Pivarski, A Safonov, S Sengupta, D Toback, M Weinberger, N Akchurin, C Bardak, J Damgov, C Jeong, K Kovitanggoon, SW Lee, P Mane, Y Roh, A Sill, I Volobouev, R Wigmans, E Yazgan, E Appelt, E Brownson, D Engh, C Florez, W Gabella, W Johns, P Kurt, C Maguire, A Melo, P Sheldon, J Velkovska, MW Arenton, M Balazs, M Buehler, S Conetti, B Cox, R Hirosky, A Ledovskoy, C Neu, R Yohay, S Gollapinni, K Gunthoti, R Harr, PE Karchin, M Mattson, C Milstène, A Sakharov, M Anderson, M Bachtis, JN Bellinger, D Carlsmith, S Dasu, S Dutta, J Efron, L Gray, KS Grogg, M Grothe, M Herndon, P Klabbers, J Klukas, A Lanaro, C Lazaridis, J Leonard, D Lomidze, R Loveless, A Mohapatra, G Polese, D Reeder, A Savin, WH Smith, J Swanson, M Weinberg, CMS CollaborationAbstract:
Bose-Einstein correlations have been measured using samples of proton-proton collisions at 0.9 and 2.36 TeV center-of-mass energies, recorded by the CMS experiment at the CERN Large Hadron Collider. The signal is observed in the form of an enhancement of pairs of same-sign charged particles with small relative four-momentum. The size of the correlated particle emission region is seen to increase significantly with the particle multiplicity of the event.Measurement of W-boson polarization in Top-Quark Decay in pp collisions at sqrt[s]=1.96 TeV.
Physical review letters 105:4 (2010) 042002
Authors:
T Aaltonen, J Adelman, B Alvarez González, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, J Appel, A Apresyan, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, A Attal, A Aurisano, F Azfar, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Barria, P Bartos, G Bauer, P-H Beauchemin, F Bedeschi, D Beecher, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, I Bizjak, RE Blair, C Blocker, B Blumenfeld, A Bocci, A Bodek, V Boisvert, D Bortoletto, J Boudreau, A Boveia, B Brau, A Bridgeman, L Brigliadori, C Bromberg, E Brubaker, J Budagov, HS Budd, S Budd, K Burkett, G Busetto, P Bussey, A Buzatu, KL Byrum, S Cabrera, C Calancha, S Camarda, M Campanelli, M Campbell, F Canelli, A Canepa, B Carls, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, SH Chang, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, JP Chou, K Chung, WH Chung, YS Chung, T Chwalek, CI Ciobanu, MA Ciocci, A Clark, D Clark, G Compostella, ME Convery, J Conway, M Corbo, M Cordelli, CA Cox, DJ Cox, F Crescioli, C Cuenca Almenar, J Cuevas, R Culbertson, JC Cully, D Dagenhart, N d'Ascenzo, M Datta, T Davies, P de Barbaro, S De Cecco, A Deisher, G De Lorenzo, M Dell'orso, C Deluca, L Demortier, J Deng, M Deninno, M d'Errico, A Di Canto, B Di Ruzza, JR Dittmann, M D'Onofrio, S Donati, P Dong, T Dorigo, S Dube, K Ebina, A Elagin, R Erbacher, D Errede, S Errede, N Ershaidat, R Eusebi, HC Fang, S Farrington, WT Fedorko, RG Feild, M Feindt, JP Fernandez, C Ferrazza, R Field, G Flanagan, R Forrest, MJ Frank, M Franklin, JC Freeman, I Furic, M Gallinaro, J Galyardt, F Garberson, JE Garcia, AF Garfinkel, P Garosi, H Gerberich, D Gerdes, A Gessler, S Giagu, V Giakoumopoulou, P Giannetti, K Gibson, JL Gimmell, CM Ginsburg, N Giokaris, M Giordani, P Giromini, M Giunta, G Giurgiu, V Glagolev, D Glenzinski, M Gold, N Goldschmidt, A Golossanov, G Gomez, G Gomez-Ceballos, M Goncharov, O González, I Gorelov, AT Goshaw, K Goulianos, A Gresele, S Grinstein, C Grosso-Pilcher, U Grundler, J Guimaraes da Costa, Z Gunay-Unalan, C Haber, SR Hahn, E Halkiadakis, B-Y Han, JY Han, F Happacher, K Hara, D Hare, M Hare, RF Harr, M Hartz, K Hatakeyama, C Hays, M Heck, J Heinrich, M Herndon, J Heuser, S Hewamanage, D Hidas, CS Hill, D Hirschbuehl, A Hocker, S Hou, M Houlden, S-C Hsu, RE Hughes, M Hurwitz, U Husemann, M Hussein, J Huston, J Incandela, G Introzzi, M Iori, A Ivanov, E James, D Jang, B Jayatilaka, EJ Jeon, MK Jha, S Jindariani, W Johnson, M Jones, KK Joo, SY Jun, JE Jung, TR Junk, T Kamon, D Kar, PE Karchin, Y Kato, R Kephart, W Ketchum, J Keung, V Khotilovich, B Kilminster, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kim, N Kimura, L Kirsch, S Klimenko, K Kondo, DJ Kong, J Konigsberg, A Korytov, AV Kotwal, M Kreps, J Kroll, D Krop, N Krumnack, M Kruse, V Krutelyov, T Kuhr, NP Kulkarni, M Kurata, S Kwang, AT Laasanen, S Lami, S Lammel, M Lancaster, RL Lander, K Lannon, A Lath, G Latino, I Lazzizzera, T Lecompte, E Lee, HS Lee, JS Lee, SW Lee, S Leone, JD Lewis, C-J Lin, J Linacre, M Lindgren, E Lipeles, A Lister, DO Litvintsev, C Liu, T Liu, NS Lockyer, A Loginov, L Lovas, D Lucchesi, J Lueck, P Lujan, P Lukens, G Lungu, J Lys, R Lysak, D Macqueen, R Madrak, K Maeshima, K Makhoul, P Maksimovic, S Malde, S Malik, G Manca, A Manousakis-Katsikakis, F Margaroli, C Marino, CP Marino, A Martin, V Martin, M Martínez, R Martínez-Ballarín, P Mastrandrea, M Mathis, ME Mattson, P Mazzanti, KS McFarland, P McIntyre, R McNulty, A Mehta, P Mehtala, A Menzione, C Mesropian, T Miao, D Mietlicki, N Miladinovic, R Miller, C Mills, M Milnik, A Mitra, G Mitselmakher, H Miyake, S Moed, N Moggi, MN Mondragon, CS Moon, R Moore, MJ Morello, J Morlock, P Movilla Fernandez, J Mülmenstädt, A Mukherjee, Th Muller, P Murat, M Mussini, J Nachtman, Y Nagai, J Naganoma, K Nakamura, I Nakano, A Napier, J Nett, C Neu, MS Neubauer, S Neubauer, J Nielsen, L Nodulman, M Norman, O Norniella, E Nurse, L Oakes, SH Oh, YD Oh, I Oksuzian, T Okusawa, R Orava, K Osterberg, S Pagan Griso, C Pagliarone, E Palencia, V Papadimitriou, A Papaikonomou, AA Paramanov, B Parks, S Pashapour, J Patrick, G Pauletta, M Paulini, C Paus, T Peiffer, DE Pellett, A Penzo, TJ Phillips, G Piacentino, E Pianori, L Pinera, K Pitts, C Plager, L Pondrom, K Potamianos, O Poukhov, F Prokoshin, A Pronko, F Ptohos, E Pueschel, G Punzi, J Pursley, J Rademacker, A Rahaman, V Ramakrishnan, N Ranjan, I Redondo, P Renton, M Renz, M Rescigno, S Richter, F Rimondi, L Ristori, A Robson, T Rodrigo, T Rodriguez, E Rogers, S Rolli, R Roser, M Rossi, R Rossin, P Roy, A Ruiz, J Russ, V Rusu, B Rutherford, H Saarikko, A Safonov, WK Sakumoto, L Santi, L Sartori, K Sato, V Saveliev, A Savoy-Navarro, P Schlabach, A Schmidt, EE Schmidt, MA Schmidt, MP Schmidt, M Schmitt, T Schwarz, L Scodellaro, A Scribano, F Scuri, A Sedov, S Seidel, Y Seiya, A Semenov, L Sexton-Kennedy, F Sforza, A Sfyrla, SZ Shalhout, T Shears, PF Shepard, M Shimojima, S Shiraishi, M Shochet, Y Shon, I Shreyber, A Simonenko, P Sinervo, A Sisakyan, AJ Slaughter, J Slaunwhite, K Sliwa, JR Smith, FD Snider, R Snihur, A Soha, S Somalwar, V Sorin, P Squillacioti, M Stanitzki, R St Denis, B Stelzer, O Stelzer-Chilton, D Stentz, J Strologas, GL Strycker, JS Suh, A Sukhanov, I Suslov, A Taffard, R Takashima, Y Takeuchi, R Tanaka, J Tang, M Tecchio, PK Teng, J Thom, J Thome, GA Thompson, E Thomson, P Tipton, P Ttito-Guzmán, S Tkaczyk, D Toback, S Tokar, K Tollefson, T Tomura, D Tonelli, S Torre, D Torretta, P Totaro, M Trovato, S-Y Tsai, Y Tu, N Turini, F Ukegawa, S Uozumi, N van Remortel, A Varganov, E Vataga, F Vázquez, G Velev, C Vellidis, M Vidal, I Vila, R Vilar, M Vogel, I Volobouev, G Volpi, P Wagner, RG Wagner, RL Wagner, W Wagner, J Wagner-Kuhr, T Wakisaka, R Wallny, SM Wang, A Warburton, D Waters, M Weinberger, J Weinelt, WC Wester, B Whitehouse, D Whiteson, AB Wicklund, E Wicklund, S Wilbur, G Williams, HH Williams, P Wilson, BL Winer, P Wittich, S Wolbers, C Wolfe, H Wolfe, T Wright, X Wu, F Würthwein, A Yagil, K Yamamoto, J Yamaoka, UK Yang, YC Yang, WM Yao, GP Yeh, K Yi, J Yoh, K Yorita, T Yoshida, GB Yu, I Yu, SS Yu, JC Yun, A Zanetti, Y Zeng, X Zhang, Y Zheng, S Zucchelli, CDF CollaborationAbstract:
We report measurements of the polarization of W bosons from top-quark decays using 2.7 fb{-1} of pp collisions collected by the CDF II detector. Assuming a top-quark mass of 175 GeV/c{2}, three measurements are performed. A simultaneous measurement of the fraction of longitudinal (f{0}) and right-handed (f{+}) W bosons yields the model-independent results f{0}=0.88±0.11(stat)±0.06(syst) and f{+}=-0.15±0.07(stat)±0.06(syst) with a correlation coefficient of -0.59. A measurement of f{0} [f{+}] constraining f{+} [f{0}] to its standard model value of 0.0 [0.7] yields f{0}=0.70±0.07(stat)±0.04(syst) [f{+}=-0.01±0.02(stat)±0.05(syst)]. All these results are consistent with standard model expectations. We achieve the single most precise measurements of f{0} for both the model-independent and model-dependent determinations.Measurement of the ratio σ{tt}/σ{Z/γ{*}→ll} and precise extraction of the tt cross section.
Physical review letters 105:1 (2010) 012001
Authors:
T Aaltonen, J Adelman, B Alvarez González, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, A Apresyan, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, A Attal, A Aurisano, F Azfar, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Barria, P Bartos, G Bauer, P-H Beauchemin, F Bedeschi, D Beecher, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, I Bizjak, RE Blair, C Blocker, B Blumenfeld, A Bocci, A Bodek, V Boisvert, D Bortoletto, J Boudreau, A Boveia, B Brau, A Bridgeman, L Brigliadori, C Bromberg, E Brubaker, J Budagov, HS Budd, S Budd, K Burkett, G Busetto, P Bussey, A Buzatu, KL Byrum, S Cabrera, C Calancha, S Camarda, M Campanelli, M Campbell, F Canelli, A Canepa, B Carls, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, SH Chang, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, JP Chou, K Chung, WH Chung, YS Chung, T Chwalek, CI Ciobanu, MA Ciocci, A Clark, D Clark, G Compostella, ME Convery, J Conway, M Corbo, M Cordelli, CA Cox, DJ Cox, F Crescioli, C Cuenca Almenar, J Cuevas, R Culbertson, JC Cully, D Dagenhart, M Datta, T Davies, P de Barbaro, S De Cecco, A Deisher, G De Lorenzo, M Dell'orso, C Deluca, L Demortier, J Deng, M Deninno, M d'Errico, A Di Canto, GP di Giovanni, B Di Ruzza, JR Dittmann, M D'Onofrio, S Donati, P Dong, T Dorigo, S Dube, K Ebina, A Elagin, R Erbacher, D Errede, S Errede, N Ershaidat, R Eusebi, HC Fang, S Farrington, WT Fedorko, RG Feild, M Feindt, JP Fernandez, C Ferrazza, R Field, G Flanagan, R Forrest, MJ Frank, M Franklin, JC Freeman, I Furic, M Gallinaro, J Galyardt, F Garberson, JE Garcia, AF Garfinkel, P Garosi, H Gerberich, D Gerdes, A Gessler, S Giagu, V Giakoumopoulou, P Giannetti, K Gibson, JL Gimmell, CM Ginsburg, N Giokaris, M Giordani, P Giromini, M Giunta, G Giurgiu, V Glagolev, D Glenzinski, M Gold, N Goldschmidt, A Golossanov, G Gomez, G Gomez-Ceballos, M Goncharov, O González, I Gorelov, AT Goshaw, K Goulianos, A Gresele, S Grinstein, C Grosso-Pilcher, RC Group, U Grundler, J Guimaraes da Costa, Z Gunay-Unalan, C Haber, SR Hahn, E Halkiadakis, B-Y Han, JY Han, F Happacher, K Hara, D Hare, M Hare, RF Harr, M Hartz, K Hatakeyama, C Hays, M Heck, J Heinrich, M Herndon, J Heuser, S Hewamanage, D Hidas, CS Hill, D Hirschbuehl, A Hocker, S Hou, M Houlden, S-C Hsu, RE Hughes, M Hurwitz, U Husemann, M Hussein, J Huston, J Incandela, G Introzzi, M Iori, A Ivanov, E James, D Jang, B Jayatilaka, EJ Jeon, MK Jha, S Jindariani, W Johnson, M Jones, KK Joo, SY Jun, JE Jung, TR Junk, T Kamon, D Kar, PE Karchin, Y Kato, R Kephart, W Ketchum, J Keung, V Khotilovich, B Kilminster, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kim, N Kimura, L Kirsch, S Klimenko, K Kondo, DJ Kong, J Konigsberg, A Korytov, AV Kotwal, M Kreps, J Kroll, D Krop, N Krumnack, M Kruse, V Krutelyov, T Kuhr, NP Kulkarni, M Kurata, S Kwang, AT Laasanen, S Lami, S Lammel, M Lancaster, RL Lander, K Lannon, A Lath, G Latino, I Lazzizzera, T Lecompte, E Lee, HS Lee, JS Lee, SW Lee, S Leone, JD Lewis, C-J Lin, J Linacre, M Lindgren, E Lipeles, A Lister, DO Litvintsev, C Liu, T Liu, NS Lockyer, A Loginov, L Lovas, D Lucchesi, J Lueck, P Lujan, P Lukens, G Lungu, J Lys, R Lysak, D Macqueen, R Madrak, K Maeshima, K Makhoul, P Maksimovic, S Malde, S Malik, G Manca, A Manousakis-Katsikakis, F Margaroli, C Marino, CP Marino, A Martin, V Martin, M Martínez, R Martínez-Ballarín, P Mastrandrea, M Mathis, ME Mattson, P Mazzanti, KS McFarland, P McIntyre, R McNulty, A Mehta, P Mehtala, A Menzione, C Mesropian, T Miao, D Mietlicki, N Miladinovic, R Miller, C Mills, M Milnik, A Mitra, G Mitselmakher, H Miyake, S Moed, N Moggi, MN Mondragon, CS Moon, R Moore, MJ Morello, J Morlock, P Movilla Fernandez, J Mülmenstädt, A Mukherjee, Th Muller, P Murat, M Mussini, J Nachtman, Y Nagai, J Naganoma, K Nakamura, I Nakano, A Napier, J Nett, C Neu, MS Neubauer, S Neubauer, J Nielsen, L Nodulman, M Norman, O Norniella, E Nurse, L Oakes, SH Oh, YD Oh, I Oksuzian, T Okusawa, R Orava, K Osterberg, S Pagan Griso, C Pagliarone, E Palencia, V Papadimitriou, A Papaikonomou, AA Paramanov, B Parks, S Pashapour, J Patrick, G Pauletta, M Paulini, C Paus, T Peiffer, DE Pellett, A Penzo, TJ Phillips, G Piacentino, E Pianori, L Pinera, K Pitts, C Plager, L Pondrom, K Potamianos, O Poukhov, F Prokoshin, A Pronko, F Ptohos, E Pueschel, G Punzi, J Pursley, J Rademacker, A Rahaman, V Ramakrishnan, N Ranjan, I Redondo, P Renton, M Renz, M Rescigno, S Richter, F Rimondi, L Ristori, A Robson, T Rodrigo, T Rodriguez, E Rogers, S Rolli, R Roser, M Rossi, R Rossin, P Roy, A Ruiz, J Russ, V Rusu, B Rutherford, H Saarikko, A Safonov, WK Sakumoto, L Santi, L Sartori, K Sato, A Savoy-Navarro, P Schlabach, A Schmidt, EE Schmidt, MA Schmidt, MP Schmidt, M Schmitt, T Schwarz, L Scodellaro, A Scribano, F Scuri, A Sedov, S Seidel, Y Seiya, A Semenov, L Sexton-Kennedy, F Sforza, A Sfyrla, SZ Shalhout, T Shears, PF Shepard, M Shimojima, S Shiraishi, M Shochet, Y Shon, I Shreyber, A Simonenko, P Sinervo, A Sisakyan, AJ Slaughter, J Slaunwhite, K Sliwa, JR Smith, FD Snider, R Snihur, A Soha, S Somalwar, V Sorin, P Squillacioti, M Stanitzki, R St Denis, B Stelzer, O Stelzer-Chilton, D Stentz, J Strologas, GL Strycker, JS Suh, A Sukhanov, I Suslov, A Taffard, R Takashima, Y Takeuchi, R Tanaka, J Tang, M Tecchio, PK Teng, J Thom, J Thome, GA Thompson, E Thomson, P Tipton, P Ttito-Guzmán, S Tkaczyk, D Toback, S Tokar, K Tollefson, T Tomura, D Tonelli, S Torre, D Torretta, P Totaro, S Tourneur, M Trovato, S-Y Tsai, Y Tu, N Turini, F Ukegawa, S Uozumi, N van Remortel, A Varganov, E Vataga, F Vázquez, G Velev, C Vellidis, M Vidal, I Vila, R Vilar, M Vogel, I Volobouev, G Volpi, P Wagner, RG Wagner, RL Wagner, W Wagner, J Wagner-Kuhr, T Wakisaka, R Wallny, SM Wang, A Warburton, D Waters, M Weinberger, J Weinelt, WC Wester, B Whitehouse, D Whiteson, AB Wicklund, E Wicklund, S Wilbur, G Williams, HH Williams, P Wilson, BL Winer, P Wittich, S Wolbers, C Wolfe, H Wolfe, T Wright, X Wu, F Würthwein, A Yagil, K Yamamoto, J Yamaoka, UK Yang, YC Yang, WM Yao, GP Yeh, K Yi, J Yoh, K Yorita, T Yoshida, GB Yu, I Yu, SS Yu, JC Yun, A Zanetti, Y Zeng, X Zhang, Y Zheng, S Zucchelli, CDF CollaborationAbstract:
We report a measurement of the ratio of the tt to Z/γ{*} production cross sections in sqrt[s]=1.96 TeV pp collisions using data corresponding to an integrated luminosity of up to 4.6 fb{-1}, collected by the CDF II detector. The tt cross section ratio is measured using two complementary methods, a b-jet tagging measurement and a topological approach. By multiplying the ratios by the well-known theoretical Z/γ{*}→ll cross section predicted by the standard model, the extracted tt cross sections are effectively insensitive to the uncertainty on luminosity. A best linear unbiased estimate is used to combine both measurements with the result σ{tt}=7.70±0.52 pb, for a top-quark mass of 172.5 GeV/c{2}.Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at square root of s = 7 TeV.
Physical review letters 105:2 (2010) 022002
Authors:
V Khachatryan, AM Sirunyan, A Tumasyan, W Adam, T Bergauer, M Dragicevic, J Erö, C Fabjan, M Friedl, R Frühwirth, VM Ghete, J Hammer, S Hänsel, M Hoch, N Hörmann, J Hrubec, M Jeitler, G Kasieczka, W Kiesenhofer, M Krammer, D Liko, I Mikulec, M Pernicka, H Rohringer, R Schöfbeck, J Strauss, A Taurok, F Teischinger, W Waltenberger, G Walzel, E Widl, C-E Wulz, V Mossolov, N Shumeiko, J Suarez Gonzalez, L Benucci, L Ceard, EA De Wolf, M Hashemi, X Janssen, T Maes, L Mucibello, S Ochesanu, B Roland, R Rougny, M Selvaggi, H Van Haevermaet, P Van Mechelen, N Van Remortel, V Adler, S Beauceron, S Blyweert, J D'Hondt, O Devroede, A Kalogeropoulos, J Maes, M Maes, S Tavernier, W Van Doninck, P Van Mulders, I Villella, EC Chabert, O Charaf, B Clerbaux, G De Lentdecker, V Dero, APR Gay, GH Hammad, PE Marage, C Vander Velde, P Vanlaer, J Wickens, S Costantini, M Grunewald, B Klein, A Marinov, D Ryckbosch, F Thyssen, M Tytgat, L Vanelderen, P Verwilligen, S Walsh, N Zaganidis, S Basegmez, G Bruno, J Caudron, J De Favereau De Jeneret, C Delaere, P Demin, D Favart, A Giammanco, G Grégoire, J Hollar, V Lemaitre, O Militaru, S Ovyn, D Pagano, A Pin, K Piotrzkowski, L Quertenmont, N Schul, N Beliy, T Caebergs, E Daubie, GA Alves, ME Pol, MHG Souza, W Carvalho, EM Da Costa, D De Jesus Damiao, C De Oliveira Martins, S Fonseca De Souza, L Mundim, V Oguri, A Santoro, SM Silva Do Amaral, A Sznajder, F Torres Da Silva De Araujo, FA Dias, MAF Dias, TR Fernandez Perez Tomei, EM Gregores, F Marinho, SF Novaes, Sandra S Padula, N Darmenov, L Dimitrov, V Genchev, P Iaydjiev, S Piperov, S Stoykova, G Sultanov, R Trayanov, I Vankov, M Dyulendarova, R Hadjiiska, V Kozhuharov, L Litov, E Marinova, M Mateev, B Pavlov, P Petkov, JG Bian, GM Chen, HS Chen, CH Jiang, D Liang, S Liang, J Wang, J Wang, X Wang, Z Wang, M Yang, J Zang, Z Zhang, Y Ban, S Guo, Z Hu, Y Mao, SJ Qian, H Teng, B Zhu, A Cabrera, CA Carrillo Montoya, B Gomez Moreno, AA Ocampo Rios, AF Osorio Oliveros, JC Sanabria, N Godinovic, D 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R Ralich, I Vodopiyanov, MR Adams, IM Anghel, L Apanasevich, VE Bazterra, RR Betts, J Callner, R Cavanaugh, C Dragoiu, EJ Garcia-Solis, CE Gerber, DJ Hofman, S Khalatian, F Lacroix, E Shabalina, A Smoron, D Strom, N Varelas, U Akgun, EA Albayrak, B Bilki, K Cankocak, W Clarida, F Duru, CK Lae, E McCliment, J-P Merlo, A Mestvirishvili, A Moeller, J Nachtman, CR Newsom, E Norbeck, J Olson, Y Onel, F Ozok, S Sen, J Wetzel, T Yetkin, K Yi, BA Barnett, B Blumenfeld, A Bonato, C Eskew, D Fehling, G Giurgiu, AV Gritsan, ZJ Guo, G Hu, P Maksimovic, S Rappoccio, M Swartz, NV Tran, A Whitbeck, P Baringer, A Bean, G Benelli, O Grachov, M Murray, V Radicci, S Sanders, JS Wood, V Zhukova, D Bandurin, T Bolton, I Chakaberia, A Ivanov, K Kaadze, Y Maravin, S Shrestha, I Svintradze, Z Wan, J Gronberg, D Lange, D Wright, D Baden, M Boutemeur, SC Eno, D Ferencek, NJ Hadley, RG Kellogg, M Kirn, A Mignerey, K Rossato, P Rumerio, F Santanastasio, A Skuja, J Temple, MB Tonjes, SC Tonwar, E Twedt, B Alver, G 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Miner, D Orbaker, G Petrillo, D Vishnevskiy, M Zielinski, A Bhatti, L Demortier, K Goulianos, K Hatakeyama, G Lungu, C Mesropian, M Yan, O Atramentov, Y Gershtein, R Gray, E Halkiadakis, D Hidas, D Hits, A Lath, K Rose, S Schnetzer, S Somalwar, R Stone, S Thomas, G Cerizza, M Hollingsworth, S Spanier, ZC Yang, A York, J Asaadi, R Eusebi, J Gilmore, A Gurrola, T Kamon, V Khotilovich, R Montalvo, CN Nguyen, J Pivarski, A Safonov, S Sengupta, D Toback, M Weinberger, N Akchurin, C Bardak, J Damgov, C Jeong, K Kovitanggoon, SW Lee, P Mane, Y Roh, A Sill, I Volobouev, R Wigmans, E Yazgan, E Appelt, E Brownson, D Engh, C Florez, W Gabella, W Johns, P Kurt, C Maguire, A Melo, P Sheldon, J Velkovska, MW Arenton, M Balazs, M Buehler, S Conetti, B Cox, R Hirosky, A Ledovskoy, C Neu, R Yohay, S Gollapinni, K Gunthoti, R Harr, PE Karchin, M Mattson, C Milstène, A Sakharov, M Anderson, M Bachtis, JN Bellinger, D Carlsmith, S Dasu, S Dutta, J Efron, L Gray, KS Grogg, M Grothe, R Hall-Wilton, M Herndon, P Klabbers, J Klukas, A Lanaro, C Lazaridis, J Leonard, D Lomidze, R Loveless, A Mohapatra, G Polese, D Reeder, A Savin, WH Smith, J Swanson, M Weinberg, CMS CollaborationAbstract:
Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at square root of s = 7 TeV are measured with the inner tracking system of the CMS detector at the LHC. The charged-hadron yield is obtained by counting the number of reconstructed hits, hit pairs, and fully reconstructed charged-particle tracks. The combination of the three methods gives a charged-particle multiplicity per unit of pseudorapidity dN(ch)/dη|(|η|<0.5) = 5.78 ± 0.01(stat) ± 0.23(syst) for non-single-diffractive events, higher than predicted by commonly used models. The relative increase in charged-particle multiplicity from square root of s = 0.9 to 7 TeV is [66.1 ± 1.0(stat) ± 4.2(syst)]%. The mean transverse momentum is measured to be 0.545 ± 0.005(stat) ± 0.015(syst) GeV/c. The results are compared with similar measurements at lower energies.Search for WW and WZ Resonances Decaying to Electron, Missing ET, and Two Jets in pp¯ Collisions at s=1.96 TeV.
Physical Review Letters American Physical Society (APS) 104:24 (2010) 241801