Title: | Measurement of the W-boson helicity in top-quark decays from t(t)over-bar production in lepton plus jets events 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 Perelygin, V Shmatov, S Skatchkov, N Smirnov, V Zarubin, A Evstyukhin, S Golovtsov, V Ivanov, Y Kim, V Levchenko, P Bruno, G Murzin, V Oreshkin, V Smirnov, I Sulimov, V Uvarov, L Vavilov, S Vorobyev, A Vorobyev, A Andreev, Y Dermenev, A Castello, R Gninenko, S Golubev, N Kirsanov, M Krasnikov, N Pashenkov, A Tlisov, D Toropin, A Epshteyn, V Erofeeva, M Gavrilov, V Caudron, A Lychkovskaya, N Popov, V Safronov, G Semenov, S Spiridonov, A Stolin, V Vlasov, E Zhokin, A Andreev, V Azarkin, M Ceard, L Dremin, I Kirakosyan, M Leonidov, A Mesyats, G Rusakov, SV Vinogradov, A Belyaev, A Boos, E Bunichev, V Dubinin, M Da Silveira, G Dudko, L Gribushin, A Klyukhin, V Kodolova, O Lokhtin, I Markina, A Obraztsov, S Perfilov, M Savrin, V Tsirova, N Delaere, C Azhgirey, I Bayshev, I Bitioukov, S Kachanov, V Kalinin, A Konstantinov, D Krychkine, V Petrov, V Ryutin, R Sobol, A du Pree, T Tourtchanovitch, L Troshin, S Tyurin, N Uzunian, A Volkov, A Adzic, P Djordjevic, M Ekmedzic, M Krpic, D Milosevic, J Favart, D Aguilar-Benitez, M Alcaraz Maestre, J Battilana, C Calvo, E Cerrada, M Chamizo Llatas, M Colino, N De la Cruz, B Delgado Peris, A Dominguez Vazquez, D Forthomme, L Fernandez Bedoya, C Fernandez Ramos, JP Ferrando, A Flix, J Fouz, MC Garcia-Abia, P Gonzalez Lopez, O Goy Lopez, S Hernandez, JM Josa, MI Ghete, VM Giammanco, A Merino, G Navarro De Martino, E Puerta Pelayo, J Quintario Olmeda, A Redondo, I Romero, L Santaolalla, J Soares, MS Willmott, C Albajar, C Hollar, J de Troconiz, JF Brun, H Cuevas, J Fernandez Menendez, J Folgueras, S Gonzalez Caballero, I Lloret Iglesias, L Piedra Gomez, J Brochero Cifuentes, JA Cabrillo, IJ Jez, P Calderon, A Chuang, SH Duarte Campderros, J Fernandez, M Gomez, G Gonzalez Sanchez, J Graziano, A Jorda, C Lopez Virto, A Marco, J Lemaitre, V Marco, R Martinez Rivero, C Matorras, F Munoz Sanchez, FJ Rodrigo, T Rodriguez-Marrero, AY Ruiz-Jimeno, A Scodellaro, L Vila, I Vilar Cortabitarte, R Liao, J Abbaneo, D Auffray, E Auzinger, G Bachtis, M Baillon, P Ball, AH Barney, D Bendavid, J Benitez, JF Bernet, C Militaru, O Bianchi, G Bloch, P Bocci, A Bonato, A Bondu, O Botta, C Breuker, H Camporesi, T Cerminara, G Christiansen, T Nuttens, C Perez, JAC Colafranceschi, S D'Alfonso, M d'Enterria, D Dabrowski, A David, A De Guio, F De Roeck, A De Visscher, S Di Guida, S Pagano, D Dobson, M Dupont-Sagorin, N Elliott-Peisert, A Eugster, J Funk, W Georgiou, G Giffels, M Gigi, D Gill, K Giordano, D Pin, A Girone, M Giunta, M Glege, F Garrido, RG-R Gowdy, S Guida, R Hammer, J Hansen, M Harris, P Hartl, C Piotrzkowski, K Hinzmann, A Innocente, V Janot, P Karavakis, E Kousouris, K Krajczar, K Lecoq, P Lee, Y-J Lourenco, C Magini, N Hoermann, N Popov, A Malgeri, L Mannelli, M Masetti, L Meijers, F Mersi, S Meschi, E Moser, R Mulders, M Musella, P Nesvold, E Selvaggi, M Orsini, L Cortezon, EP Perez, E Perrozzi, L Petrilli, A Pfeiffer, A Pierini, M Pimia, M Piparo, D Plagge, M Garcia, JMV Quertenmont, L Racz, A Reece, W Rolandi, G Rovere, M Sakulin, H Santanastasio, F Schaefer, C Schwick, C Segoni, I Beliy, N Sekmen, S Sharma, A Siegrist, P Silva, P Simon, M Sphicas, P Spiga, D Stoye, M Tsirou, A Veres, GI Caebergs, T Vlimant, JR Woehri, HK Worm, SD Zeuner, WD Bertl, W Deiters, K Erdmann, W Gabathuler, K Horisberger, R Ingram, Q Daubie, E Kaestli, HC Koenig, S Kotlinski, D Langenegger, U Renker, D Rohe, T Bachmair, F Baeni, L Bianchini, L Bortignon, P Hammad, GH Buchmann, MA Casal, B Chanon, N Deisher, A Dissertori, G Dittmar, M Donega, M Duenser, M Eller, P Freudenreich, K Alves, GA Grab, C Hits, D Lecomte, P Lustermann, W Mangano, B Marini, AC del Arbol, PMR Meister, D Mohr, N Moortgat, F Correa Martins Junior, M Naegeli, C Nef, P Nessi-Tedaldi, F Pandolfi, F Pape, L Pauss, F Peruzzi, M Ronga, FJ Rossini, M Sala, L Martins, T Sanchez, AK Starodumov, A Stieger, B Takahashi, M Tauscher, L Thea, A Theofilatos, K Treille, D Urscheler, C Wallny, R Hrubec, J Pol, ME Weber, HA Amsler, C Chiochia, V Favaro, C Rikova, MI Kilminster, B Mejias, BM Robmann, P Snoek, H Taroni, S Souza, MHG Verzetti, M Yang, Y Cardaci, M Chen, KH Ferro, C Kuo, CM Li, SW Lin, W Lu, YJ Volpe, R Alda Junior, WL Yu, SS Bartalini, P Chang, P Chang, YH Chang, YW Chao, Y Chen, KF Dietz, C Grundler, U Hou, W-S Carvalho, W Hsiung, Y Kao, KY Lei, YJ Lu, R-S Majumder, D Petrakou, E Shi, X Shiu, JG Tzeng, YM Wang, M Chinellato, J Asavapibhop, B Suwonjandee, N Adiguzel, A Bakirci, MN Cerci, S Dozen, C Dumanoglu, I Eskut, E Girgis, S Gokbulut, G Custodio, A Gurpinar, E Hos, I Kangal, EE Topaksu, AK Onengut, G Ozdemir, K Ozturk, S Polatoz, A Sogut, K Cerci, DS Da Costa, EM Tali, B Topakli, H Vergili, M Akin, IV Aliev, T Bilin, B Bilmis, S Deniz, M Gamsizkan, H Guler, AM De Jesus Damiao, D Karapinar, G Ocalan, K Ozpineci, A Serin, M Sever, R Surat, UE Yalvac, M Zeyrek, M Gulmez, E Isildak, B De Oliveira Martins, C Kaya, M Kaya, O Ozkorucuklu, S Sonmez, N Bahtiyar, H Barlas, E Cankocak, K Gunaydin, YO Vardarli, FI Yucel, M Fonseca De Souza, S Levchuk, L Sorokin, P Brooke, JJ Clement, E Cussans, D Flacher, H Frazier, R Goldstein, J Grimes, M Heath, GP Jeitler, M Malbouisson, H Heath, HF Kreczko, L Lucas, C Meng, Z Metson, S Newbold, DM Nirunpong, K Paramesvaran, S Poll, A Senkin, S Malek, M Smith, VJ Williams, T Bell, KW Belyaev, A Brew, C Brown, RM Cockerill, DJA Coughlan, JA Harder, K Harper, S Matos Figueiredo, D Olaiya, E Petyt, D Radburn-Smith, C Shepherd-Themistocleous, CH Tomalin, IR Womersley, WJ Bainbridge, R Buchmuller, O Burton, D Colling, D Mundim, L Cripps, N Cutajar, M Dauncey, P Davies, G Della Negra, M Ferguson, W Fulcher, J Futyan, D Gilbert, A Bryer, AG Nogima, H Hall, G Hatherell, Z Hays, J Iles, G Jarvis, M Karapostoli, G Kenzie, M Lane, R Lucas, R Lyons, L Prado Da Silva, WL Magnan, A-M Marrouche, J Mathias, B Nandi, R Nash, J Nikitenko, A 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Keywords: | Hadron-Hadron scattering;Top physics |
Issue Date: | 2013 |
Publisher: | Springer |
Citation: | Journal of High Energy Physics , 2013(10): Article 167, Oct 2013 |
Abstract: | The W-boson helicity fractions in top-quark decays are measured with tt events in
the lepton+jets final state, using proton-proton collisions at a centre-of-mass energy
of 7 TeV, collected in 2011 with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 5.0 fb-1. The measured fractions of longitudinal, left-, and right-handed helicity are F0 = 0.682 0.030 (stat.) 0.033 (syst.), FL = 0.310 0.022 (stat.) 0.022 (syst.), and FR = 0.008 0.012 (stat.) 0.014 (syst.), consistent with the standard model predictions. The measured fractions are used to probe the existence of anomalous Wtb couplings. Exclusion limits on the real components of the anomalous couplings gL, gR are also derived. |
Description: | This is the pre-print version of the final published article that can be accessed at the link below. |
URI: | http://link.springer.com/article/10.1007%2FJHEP10%282013%29167 http://bura.brunel.ac.uk/handle/2438/7806 |
DOI: | http://dx.doi.org/10.1007/JHEP10(2013)167 |
ISSN: | 1029-8479 |
Appears in Collections: | Electronic and Electrical Engineering Dept of Electronic and Electrical Engineering Research Papers
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