Title: | Measurement of associated W+ charm production in pp collisions at √s=7 TeV |
Authors: | Chatrchyan, S Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Eroe, J Fabjan, C Friedl, M Fruehwirth, R Beluffi, C Malakhov, A Matveev, V Moisenz, P Palichik, V Perelygin, V Shmatov, S Skatchkov, N Smirnov, V Zarubin, A Evstyukhin, S Bruno, G Golovtsov, V Ivanov, Y Kim, V Levchenko, P Murzin, V Oreshkin, V Smirnov, I Sulimov, V Uvarov, L Vavilov, S Castello, R Vorobyev, A Vorobyev, A Andreev, Y Dermenev, A Gninenko, S Golubev, N Kirsanov, M Krasnikov, N Pashenkov, A Tlisov, D Caudron, A Toropin, A Epshteyn, V Erofeeva, M Gavrilov, V Lychkovskaya, N Popov, V Safronov, G Semenov, S Spiridonov, A Stolin, V Ceard, L Vlasov, E Zhokin, A Andreev, V Azarkin, M Dremin, I Kirakosyan, M Leonidov, A Mesyats, G Rusakov, SV Vinogradov, A Da Silveira, GG Belyaev, A Boos, E Dubinin, M Dudko, L Ershov, A Gribushin, A Klyukhin, V Kodolova, O Lokhtin, I Markina, A Delaere, C Obraztsov, S Petrushanko, S Savrin, V Snigirev, A Azhgirey, I Bayshev, I Bitioukov, S Kachanov, V Kalinin, A Konstantinov, D du Pree, T Krychkine, V Petrov, V Ryutin, R Sobol, A Tourtchanovitch, L Troshin, S Tyurin, N Uzunian, A Volkov, A Adzic, P Favart, D Djordjevic, M Ekmedzic, M Krpic, D Milosevic, J Aguilar-Benitez, M Alcaraz Maestre, J Battilana, C Calvo, E Cerrada, M Chamizo Llatas, M Forthomme, L Colino, N De La Cruz, B Delgado Peris, A Dominguez Vazquez, D Fernandez Bedoya, C Fernandez Ramos, JP Ferrando, A Flix, J Fouz, MC Garcia-Abia, P Ghete, VM Giammanco, A Gonzalez Lopez, O Goy Lopez, S Hernandez, JM Josa, MI Merino, G Navarro De Martino, E Puerta Pelayo, J Quintario Olmeda, A Redondo, I Romero, L Hollar, J Santaolalla, J Soares, MS Willmott, C Albajar, C de Troconiz, JF Brun, H Cuevas, J Fernandez Menendez, J Folgueras, S Gonzalez Caballero, I Jez, P Lloret Iglesias, L Piedra Gomez, J Brochero Cifuentes, JA Cabrillo, IJ Calderon, A Chuang, SH Duarte Campderros, J Fernandez, M Gomez, G Gonzalez Sanchez, J Lemaitre, V Graziano, A Jorda, C Lopez Virto, A Marco, J Marco, R Martinez Rivero, C Matorras, F Munoz Sanchez, FJ Rodrigo, T Rodriguez-Marrero, AY Liao, J Ruiz-Jimeno, A Scodellaro, L Vila, I Vilar Cortabitarte, R Abbaneo, D Auffray, E Auzinger, G Bachtis, M Baillon, P Ball, AH Militaru, O Barney, D Bendavid, J Benitez, JF Bernet, C Bianchi, G Bloch, P Bocci, A Bonato, A Bondu, O Botta, C Nuttens, C Breuker, H Camporesi, T Cerminara, G Christiansen, T Perez, JAC Colafranceschi, S D'Alfonso, M d'Enterria, D Dabrowski, A David, A Pagano, D De Guio, F De Roeck, A De Visscher, S Di Guida, S Dobson, M Dupont-Sagorin, N Elliott-Peisert, A Eugster, J Funk, W Georgiou, G Pin, A Giffels, M Gigi, D Gill, K Giordano, D Girone, M Giunta, M Glege, F Garrido, RG-R Gowdy, S Guida, R Piotrzkowski, K Hammer, J Hansen, M Harris, P Hartl, C Hinzmann, A Innocente, V Janot, P Karavakis, E Kousouris, K Krajczar, K Hoermann, N Popov, A Lecoq, P Lee, Y-J Lourenco, C Magini, N Malgeri, L Mannelli, M Masetti, L Meijers, F Mersi, S Meschi, E Selvaggi, M Moser, R Mulders, M Musella, P Nesvold, E Orsini, L Cortezon, EP Perez, E Perrozzi, L Petrilli, A Pfeiffer, A Marono, MV Pierini, M Pimiae, M Piparo, D Plagge, M Quertenmont, L Racz, A Reece, W Rojo, J Rolandi, G Rovere, M Garcia, JMV Sakulin, H Santanastasio, F Schaefer, C Schwick, C Segoni, I Sekmen, S Sharma, A Siegrist, P Silva, P Simon, M Beliy, N Sphicas, P Spiga, D Stoye, M Tsirou, A Veres, GI Vlimant, JR Woehri, HK Worm, SD Zeuner, WD Bertl, W Caebergs, T Deiters, K Erdmann, W Gabathuler, K Horisberger, R Ingram, Q Kaestli, HC Koenig, S Kotlinski, D Langenegger, U Renker, D Daubie, E Rohe, T Bachmair, F Baeni, L Bianchini, L Bortignon, P Buchmann, MA Casal, B Chanon, N Deisher, A Dissertori, G Hammad, GH Dittmar, M Donega, M Duenser, M Eller, P Freudenreich, K Grab, C Hits, D Lecomte, P Lustermann, W Mangano, B Alves, GA Marini, AC del Arbol, PMR Meister, D Mohr, N Moortgat, F Naegeli, C Nef, P Nessi-Tedaldi, F Pandolfi, F Pape, L Correa Martins Junior, M Pauss, F Peruzzi, M Ronga, FJ Rossini, M Sala, L Sanchez, AK Starodumov, A Stieger, B Takahashi, M Tauscher, L Hrubec, J Martins, T Thea, A Theofilatos, K Treille, D Urscheler, C Wallny, R Weber, HA Amsler, C Chiochia, V Favaro, C Rikova, MI Pol, ME Kilminster, B Mejias, BM Robmann, P Snoek, H Taroni, S Verzetti, M Yang, Y Cardaci, M Chen, KH Ferro, C Souza, MHG Kuo, CM Li, SW Lin, W Lu, YJ Volpe, R Yu, SS Bartalini, P Chang, P Chang, YH Chang, YW Alda Junior, WL Chao, Y Chen, KF Dietz, C Grundler, U Hou, W-S Hsiung, Y Kao, KY Lei, YJ Lu, R-S Majumder, D Carvalho, W Petrakou, E Shi, X Shiu, JG Tzeng, YM Wang, M Asavapibhop, B Suwonjandee, N Adiguzel, A Bakirci, MN Cerci, S Chinellato, J Dozen, C Dumanoglu, I Eskut, E Girgis, S Gokbulut, G Gurpinar, E Hos, I Kangal, EE Topaksu, AK Onengut, G Custodio, A Ozdemir, K Ozturk, S Polatoz, A Sogut, K Cerci, DS Tali, B Topakli, H Vergili, M Akin, IV Aliev, T Da Costa, EM Bilin, B Bilmis, S Deniz, M Gamsizkan, H Guler, AM Karapinar, G Ocalan, K Ozpineci, A Serin, M Sever, R De Jesus Damiao, D Surat, UE Yalvac, M Zeyrek, M Gulmez, E Isildak, B Kaya, M Kaya, O Ozkorucuklu, S Sonmez, N Bahtiyar, H De Oliveira Martins, C Barlas, E Cankocak, K Gunaydin, YO Vardarli, FI Yucel, M Levchuk, L Sorokin, P Brooke, JJ Clement, E Cussans, D Jeitler, M Fonseca De Souza, S Flacher, H Frazier, R Goldstein, J Grimes, M Heath, GP Heath, HF Kreczko, L Lucas, C Meng, Z Metson, S Malbouisson, H Newbold, DM Nirunpong, K Paramesvaran, S Poll, A Senkin, S Smith, VJ Williams, T Bell, KW Belyaev, A Brew, C Malek, M Brown, RM Cockerill, DJA Coughlan, JA Harder, K Harper, S Ilic, J Olaiya, E Petyt, D Radburn-Smith, BC Shepherd-Themistocleous, CH Matos Figueiredo, D Tomalin, IR Womersley, WJ Bainbridge, R Buchmuller, O Burton, D Colling, D Cripps, N Cutajar, M Dauncey, P Davies, G Mundim, L Della Negra, M Ferguson, W Fulcher, J Futyan, D Gilbert, A Bryer, AG Hall, G Hatherell, Z Hays, J Iles, G Nogima, H Jarvis, M Karapostoli, G Kenzie, M Lane, R Lucas, R Lyons, L Magnan, A-M Marrouche, J Mathias, B Nandi, R Prado Da Silva, WL Nash, J Nikitenko, A Pela, J Pesaresi, M Petridis, K Pioppi, M Raymond, DM Rogerson, S Rose, A Seez, C Santoro, A Sharp, P Sparrow, A Tapper, A Acosta, MV Virdee, T Wakefield, S Wardle, N Chadwick, M Cole, JE Hobson, PR Sznajder, A Khan, A Kyberd, P Leggat, D Leslie, D Martin, W Reid, ID Symonds, P Teodorescu, L Turner, M Dittmann, J Tonelli Manganote, EJ Hatakeyama, K Kasmi, A Liu, H Scarborough, T Charaf, O Cooper, SI Henderson, C Rumerio, P Avetisyan, A Bose, T Kiesenhofer, W Vilela Pereira, A Fantasia, C Heister, A Lawson, P Lazic, D Rohlf, J Sperka, D St John, J Sulak, L Alimena, J Bhattacharya, S Bernardes, CA Christopher, G Cutts, D Demiragli, Z Ferapontov, A Garabedian, A Heintz, U Jabeen, S Kukartsev, G Laird, E Landsberg, G Dias, FA Luk, M Narain, M Segala, M Sinthuprasith, T Speer, T Breedon, R Breto, G Sanchez, MCDLB Chauhan, S Chertok, M Fernandez Perez Tomei, TR Conway, J Conway, R Cox, PT Erbacher, R Gardner, M Houtz, R Ko, W Kopecky, A Lander, R Miceli, T Gregores, EM Pellett, D Pilot, J Ricci-Tam, F Rutherford, B Searle, M Smith, J Squires, M Tripathi, M Wilbur, S Yohay, R Lagana, C Andreev, V Cline, D Cousins, R Erhan, S Everaerts, P Farrell, C Felcini, M Hauser, J Ignatenko, M Jarvis, C Mercadante, PG Rakness, G Schlein, P Takasugi, E Traczyk, P Valuev, V Weber, M Babb, J Clare, R Ellison, J Gary, JW Novaes, SF Hanson, G Heilman, J Jandir, P Liu, H Long, OR Luthra, A Malberti, M Nguyen, H Shrinivas, A Sturdy, J Padula, SS Sumowidagdo, S Wilken, R Wimpenny, S Andrews, W Branson, JG Cerati, GB Cittolin, S Evans, D Holzner, A Kelley, R Genchev, V Lebourgeois, M Letts, J Macneill, I Padhi, S Palmer, C Petrucciani, G Pieri, M Sani, M Sharma, V Simon, S Knuenz, V Iaydjiev, P Sudano, E Tadel, M Tu, Y Vartak, A Wasserbaech, S Wuerthwein, F Yagil, A Yoo, J Barge, D Campagnari, C Piperov, S Danielson, T Flowers, K Geffert, P George, C Golf, F Incandela, J Justus, C Kovalskyi, D Krutelyov, V Lowette, S Rodozov, M Villalba, RM Mccoll, N Pavlunin, V Richman, J Rossin, R Stuart, D To, W West, C Apresyan, A Bornheim, A Sultanov, G Bunn, J Chen, Y Di Marco, E Duarte, J Kcira, D Ma, Y Mott, A Newman, HB Pena, C Rogan, C Vutova, M Spiropulu, M Timciuc, V Veverka, J Wilkinson, R Xie, S Zhu, RY Azzolini, V Calamba, A Carroll, R Ferguson, T Dimitrov, A Iiyama, Y Jang, DW Liu, YF Paulini, M Russ, J Vogel, H Vorobiev, I Cumalat, JP Drell, BR Ford, WT Hadjiiska, R Gaz, A Lopez, EL Nauenberg, U Smith, JG Stenson, K Ulmer, KA Wagner, SR Alexander, J Chatterjee, A Eggert, N Kozhuharov, V Gibbons, LK Hopkins, W Khukhunaishvili, A Kreis, B Mirman, N Kaufman, GN Patterson, JR Ryd, A Salvati, E Sun, W Litov, L Teo, WD Thom, J Thompson, J Tucker, J Weng, Y Winstrom, L Wittich, P Winn, D Abdullin, S Albrow, M Pavlov, B Anderson, J Apollinari, G Bauerdick, LAT Beretvas, A Berryhill, J Bhat, PC Burkett, K Butler, JN Chetluru, V Cheung, HWK Krammer, M Petkov, P Chlebana, F Cihangir, S Elvira, VD Fisk, I Freeman, J Gao, Y Gottschalk, E Gray, L Green, D Gutsche, O Bian, JG Hare, D Harris, RM Hirschauer, J Hooberman, B Jindariani, S Johnson, M Joshi, U Kaadze, K Klima, B Kunori, S Chen, GM Kwan, S Linacre, J Lincoln, D Lipton, R Lykken, J Maeshima, K Marraffino, JM Outschoorn, VIM Maruyama, S Mason, D Chen, HS McBride, P Mishra, K Mrenna, S Musienko, Y Newman-Holmes, C O'Dell, V Prokofyev, O Ratnikova, N Sexton-Kennedy, E Sharma, S Jiang, CH Spalding, WJ Spiegel, L Taylor, L Tkaczyk, S Tran, NV Uplegger, L Vaandering, EW Vidal, R Whitmore, J Wu, W Liang, D Yang, F Yun, JC Acosta, D Avery, P Bourilkov, D Chen, M Cheng, T Das, S De Gruttola, M Di Giovanni, GP Liang, S Dobur, D Drozdetskiy, A Field, RD Fisher, M Fu, Y Furic, IK Hugon, J Kim, B Konigsberg, J Korytov, A Meng, X Kropivnitskaya, A Kypreos, T Low, JF Matchev, K Milenovic, P Mitselmakher, G Muniz, L Remington, R Rinkevicius, A Skhirtladze, N Tao, J Snowball, M Yelton, J Zakaria, M Gaultney, V Hewamanage, S Linn, S Markowitz, P Martinez, G Rodriguez, JL Adams, T Wang, X Askew, A Bochenek, J Chen, J Diamond, B Haas, J Hagopian, S Hagopian, V Johnson, KF Prosper, H Veeraraghavan, V Kraetschmer, I Wang, Z Weinberg, M Baarmand, MM Dorney, B Hohlmann, M Kalakhety, H Yumiceva, F Adams, MR Apanasevich, L Bazterra, VE Betts, RR Asawatangtrakuldee, C Bucinskaite, I Callner, J Cavanaugh, R Evdokimov, O Gauthier, L Gerber, CE Hofman, DJ Khalatyan, S Kurt, P Lacroix, F Ban, Y Moon, DH O'Brien, C Silkworth, C Strom, D Turner, P Varelas, N Akgun, U Albayrak, EA Bilki, B Clarida, W Guo, Y Dilsiz, K Duru, F Griffiths, S Merlo, J-P Mermerkaya, H Mestvirishvili, A Moeller, A Nachtman, J Newsom, CR Ogul, H Li, Q Onel, Y Ozok, F Sen, S Tan, P Tiras, E Wetzel, J Yetkin, T Yi, K Barnett, BA Blumenfeld, B Li, W Bolognesi, S Giurgiu, G Gritsan, AV Hu, G Maksimovic, P Martin, C Swartz, M Whitbeck, A Baringer, P Bean, A Liu, S Benelli, G Kenny, RP Murray, M Noonan, D Sanders, S Stringer, R Wood, JS Barfuss, AF Chakaberia, I Ivanov, A 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Heredia-de La Cruz, I Lopez-Fernandez, R Martinez-Ortega, J Sanchez-Hernandez, A Villasenor-Cendejas, LM Carrillo Moreno, S Thyssen, F Vazquez Valencia, F Salazar Ibarguen, HA Casimiro Linares, E Morelos Pineda, A Reyes-Santos, MA Krofcheck, D Butler, PH Doesburg, R Reucroft, S Silverwood, H Tytgat, M Ahmad, M Asghar, MI Butt, J Hoorani, HR Khalid, S Khan, WA Khurshid, T Qazi, S Shah, MA Shoaib, M Walsh, S Bialkowska, H Boimska, B Frueboes, T Gorski, M Kazana, M Nawrocki, K Romanowska-Rybinska, K Szleper, M Wrochna, G Zalewski, P Yazgan, E Brona, G Bunkowski, K Cwiok, M Dominik, W Doroba, K Kalinowski, A Konecki, M Krolikowski, J Misiura, M Wolszczak, W Zaganidis, N Almeida, N Bargassa, P Beirao Da Cruz E Silva, C Faccioli, P Ferreira Parracho, PG Gallinaro, M Nguyen, F Rodrigues Antunes, J Seixas, J Varela, J Basegmez, S Vischia, P Afanasiev, S Bunin, P Gavrilenko, M Golutvin, I Gorbunov, I Kamenev, A Karjavin, V Konoplyanikov, V Lanev, A |
Keywords: | Hadron-Hadron Scattering |
Issue Date: | 2014 |
Publisher: | Springer Berlin Heidelberg |
Citation: | Journal of High Energy Physics: February 2014, 2014:13 |
Abstract: | Measurements are presented of the associated production of a W boson and a charm-quark jet (W + c) in pp collisions at a center-of-mass energy of 7 TeV. The analysis is conducted with a data sample corresponding to a total integrated luminosity of 5 fb−1, collected by the CMS detector at the LHC. W boson candidates are identified by their decay into a charged lepton (muon or electron) and a neutrino. The W + c measurements are performed for charm-quark jets in the kinematic region p jet T > 25 GeV, |ηjet| < 2.5, for two different thresholds for the transverse momentum of the lepton from the W-boson decay, and in the pseudorapidity range |ηℓ| < 2.1. Hadronic and inclusive semileptonic decays of charm hadrons are used to measure the following total cross sections: σ(pp → W + c + X) × B (W → ℓν) = 107.7 ± 3.3 (stat.) ± 6.9 (syst.) pb ( p ℓ T > 25 GeV) and σ(pp → W + c + X)× B (W → ℓν) = 84.1 ± 2.0 (stat.) ± 4.9 (syst.) pb ( p ℓ T > 35 GeV), and the cross section ratios σ(pp → W+ + c ¯ + X)/σ(pp → W− + c + X) = 0.954 ± 0.025 (stat.) ± 0.004 (syst.) ( p ℓ T > 25 GeV) and σ(pp → W+ + c ¯ + X)/σ(pp → W− + c + X) = 0.938 ± 0.019 (stat.) ± 0.006 (syst.) ( p ℓ T > 35 GeV). Cross sections and cross section ratios are also measured differentially with respect to the absolute value of the pseudorapidity of the lepton from the W-boson decay. These are the first measurements from the LHC directly sensitive to the strange quark and antiquark content of the proton. Results are compared with theoretical predictions and are consistent with the predictions based on global fits of parton distribution functions. |
Description: | Open Access, Copyright CERN, for the benefit of the CMS Collaboration. |
URI: | http://link.springer.com/article/10.1007%2FJHEP02%282014%29013 http://bura.brunel.ac.uk/handle/2438/9250 |
DOI: | http://dx.doi.org/10.1007/JHEP02(2014)013 |
ISSN: | 1029-8479 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers
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