Title: | Measurement of the polarization of W bosons with large transverse momenta in W+jets events at the LHC |
Authors: | Chatrchyan, S Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Ero, J Fabjan, C Friedl, M Fruhwirth, R Kypreos, T Swain, J Hidas, P Horvath, D Kapusi, A Martins, CD Suarez, RG Krajczar, K Sikler, F Veres, GI Mantovani, G Matchev, K Yu, I Vesztergombi, G Beni, N Trocino, D Molnar, J Palinkas, J Szillasi, Z Veszpremi, V Mannelli, M Raics, P Mitselmakher, G Kalogeropoulos, A Bilinskas, MJ Trocsanyi, ZL Ujvari, B Bansal, S Wood, D Beri, SB Bhatnagar, V Dhingra, N Gupta, R Muniz, L Jindal, M Masetti, L Grigelionis, I Kaur, M Kohli, JM Maes, M Mehta, MZ Auffray, E Nishu, N Saini, LK Prescott, C Sharma, A Singh, AP Singh, JB Janulis, M Singh, SP Maurisset, A Ahuja, S Bhattacharya, S Choudhary, BC Zhang, J Chuang, SH Van Doninck, W Gupta, P Jain, S Jain, S Stoye, M Kumar, A Ranjan, K Shivpuri, RK Konstantinov, D Meijers, F Qian, SJ Choudhury, RK Anastassov, A Dutta, D Kailas, S Kumar, V Martisiute, D Van Mulders, P Mohanty, AK Pant, LM Shukla, P Padley, BP Aziz, T Guchait, M Mersi, S Kubik, A Gurtu, A Maity, M Petrov, P Majumder, D Majumder, G Mazumdar, K Remington, R Van Onsem, GP Mohanty, GB Saha, A Sudhakar, K Wickramage, N Odell, N Meschi, E Sabonis, T Banerjee, S Dugad, S Schmitt, M Mondal, NK Arfaei, H Bakhshiansohi, H Etesami, SM Villella, I Fahim, A Hashemi, M Ofierzynski, RA Castilla-Valdez, H Jafari, A Maselli, S Pelliccioni, M Moser, R Khakzad, M Mohammadi, A Najafabadi, MM Mehdiabadi, SP Safarzadeh, B Zeinali, M Abbrescia, M Charaf, O Killewald, P Scurlock, B Galanti, M Barbone, L Calabria, C Mozer, MU Colaleo, A Creanza, D De Filippis, N De Palma, M Fiore, L Iaselli, G Sellers, P Menichelli, M De La Cruz-Burelo, E Lusito, L Pollack, B Maggi, G Clerbaux, B Maggi, M Mulders, M Manna, N Marangelli, B Skhirtladze, N My, S Nuzzo, S Caudron, J Pacifico, N Pierro, GA Pozdnyakov, A Pompili, A Pugliese, G Romano, F De Lentdecker, G Snowball, M Nesvold, E Roselli, G Selvaggi, G Heredia-de La Cruz, I Silvestris, L Trentadue, R Tupputi, S Schmitt, M Zito, G Abbiendi, G Wang, D Benvenuti, AC Bonacorsi, D Braibant-Giacomelli, S De Souza, SF Lopez-Fernandez, R Dero, V Brigliadori, L Capiluppi, P Castro, A Stoynev, S Yelton, J Cavallo, FR Cuffiani, M Dallavalle, GM Fabbri, F Fanfani, A Villalba, RM Fasanella, D Nguyen, M Giacomelli, P Gay, APR Zakaria, M Giunta, M Auzinger, G Marcellini, S Masetti, G Meneghelli, M Montanari, A Sanchez-Hernandez, A Navarria, FL Odorici, F Perrotta, A Campderros, JD Orimoto, T Primavera, F Rossi, AM Velasco, M Hammad, GH Rovelli, T Siroli, G Tadel, M Travaglini, R Albergo, S Redjimi, R Cappello, G Chiorboli, M Costa, S Korablev, A Orsini, L Won, S Tricomi, A Tuve, C Villasenor-Cendejas, LM Barbagli, G Caballero, IG Ceron, C Hreus, T Ciulli, V Civinini, C D'Alessandro, R Focardi, E Frosali, S Gallo, E Antonelli, L Perez, E Moreno, SC Lannon, K Gonzi, S Lenzi, P Meschini, M Paoletti, S Marage, PE Sguazzoni, G Tropiano, A Benussi, L Bianco, S Berry, D Valls, N Valencia, FV Colafranceschi, S Petrilli, A Fabbri, F Piccolo, D Fabbricatore, P Musenich, R Benaglia, A Thomas, L De Guio, F Teng, H Di Matteo, L Krychkine, V Kotov, K Hildreth, M Gennai, S Ghezzi, A Pfeiffer, A Malvezzi, S Martelli, A Massironi, A Gaultney, V Menasce, D Moroni, L Paganoni, M Ibarguen, HAS Velde, CV Jessop, C Pedrini, D Ragazzi, S Redaelli, N Pierini, M Kramer, L Sala, S de Fatis, TT Buontempo, S Montoya, CAC Linares, EC Cavallo, N De Cosa, A Mousa, J Fabozzi, F Vanlaer, P Lebolo, LM Iorio, AOM Lista, L Pimia, M Merola, M Paolucci, P Pineda, AM Azzi, P Bacchetta, N Bellan, P Karmgard, DJ Linn, S Bisello, D Branca, A Carlin, R Adler, V Checchia, P Piparo, D Ceard, L De Mattia, M Dorigo, T Dosselli, U Markowitz, P Gasparini, F Kolb, J Gasparini, U Gozzelino, A Lacaprara, S Lazzizzera, I Margoni, M Reyes-Santos, MA Cimmino, A Polese, G Martinez, G Mazzucato, M Meneguzzo, AT Nespolo, M Kolberg, T Perrozzi, L Pozzobon, N Ronchese, P Simonetto, F Krofcheck, D Torassa, E Jensen, H Mesa, D Tosi, M Triossi, A Mundim, L Costantini, S Vanini, S Baillon, P Zotto, P Zumerle, G Baesso, P Tam, J Rodriguez, JL Berzano, U Ratti, SP Riccardi, C Torre, P Vitulo, P Racz, A Viviani, C Tropea, P Yiu, CH Luo, W Bocci, A Butler, PH Ptochos, F Doesburg, R Silverwood, H Ahmad, M Ahmed, I Asghar, MI Gil, EC Hoorani, HR Khan, WA Romero, A Antunes, JR Tsirou, A Khurshid, T Yilmaz, Y Ling, TY Qazi, S Brona, G Cwiok, M Dominik, W Doroba, K Felcini, M Kalinowski, A Nappi, A Konecki, M De Jeneret, JD Krolikowski, J Vichoudis, P Ovyn, S Frueboes, T Gokieli, R Gorski, M Adams, T Kazana, M Nawrocki, K Romeo, F Romanowska-Rybinska, K Szleper, M Wrochna, G Zalewski, P Delaere, C Damiao, DD Voutilainen, M Askew, A Almeida, N Bargassa, P David, A Klein, B Faccioli, P Parracho, PGF Gallinaro, M Musella, P Nayak, A Ribeiro, PQ Zhang, L Rodenburg, M Seixas, J Ryutin, R Oguri, V Santocchia, A Favart, D Varela, J Afanasiev, S Belotelov, I Bunin, P Bochenek, J Golutvin, I Kamenev, A Williams, G Karjavin, V Kozlov, G Taroni, S Lanev, A Zeuner, WD Moisenz, P Giammanco, A Chen, J Palichik, V Perelygin, V Shmatov, S Smirnov, V Adam, N Volodko, A Valdata, M Zarubin, A Golovtsov, V Ivanov, Y Johnson, M Diamond, B Bertl, W Kim, V Levchenko, P Gregoire, G Murzin, V Oreshkin, V Berry, E Azzurri, P Smirnov, I Sulimov, V Gleyzer, SV Uvarov, L Vavilov, S Vorobyev, A Deiters, K Vorobyev, A Andreev, Y Dermenev, A Hollar, J Bagliesi, G Elmer, P Haas, J Gninenko, S Golubev, N Kirsanov, M Krasnikov, N Matveev, V Pashenkov, A Erdmann, W Toropin, A Troitsky, S Bernardini, J Hagopian, S Epshteyn, V Gerbaudo, D Gavrilov, V Lemaitre, V Kaftanov, V Kossov, M Krokhotin, A Lychkovskaya, N Popov, V Gabathuler, K Ruspa, M Lynch, S Safronov, G Semenov, S Halyo, V Stolin, V Vlasov, E Zhokin, A Liao, J Boos, E Dubinin, M Franzoni, G Dudko, L Boccali, T Ershov, A Horisberger, R Gribushin, A Yoon, AS Hebda, P Kodolova, O Lokhtin, I Markina, A Roberts, J Obraztsov, S Perfilov, M Rolandi, G Militaru, O Petrushanko, S Sarycheva, L Savrin, V Ingram, Q Hunt, A Snigirev, A Hagopian, V Andreev, V Azarkin, M Dremin, I Broccolo, G Kirakosyan, M Leonidov, A Rusakov, SV Kaestli, HC Konig, S Pagano, D Fernandez, M Razis, PA Kotlinski, D Da Silva, WLP Langenegger, U Castaldi, R Meier, F Renker, D Rohe, T Sibille, J Starodumov, A Jenkins, M Bortignon, P Caminada, L Barney, D Slabospitsky, S Chanon, N D'Agnolo, RT Chen, Z Hammer, J Santoro, A Cittolin, S Joshi, U Johnson, KF Dissertori, G Dittmar, M Eugster, J Freudenreich, K Jones, J Grab, C Lellouch, J Sobol, A Herve, A Hintz, W Prosper, H Lecomte, P Lustermann, W Do Amaral, SMS Marchica, C del Arbol, PMR Meridiani, P Laird, E Dell'Orso, R Milenovic, P Moortgat, F Zhu, B Tourtchanovitch, L Nageli, C Nef, P Nessi-Tedaldi, F Pape, L Pauss, F Sznajder, A Punz, T Fiori, F Pegna, DL Quertenmont, L Rizzi, A Ronga, FJ Rossini, M Troshin, S Sala, L Sanchez, AK Sawley, MC Stieger, B Tauscher, L Foa, L Sekmen, S Thea, A Marlow, D De Araujo, FTD Theofilatos, K Treille, D Urscheler, C Tyurin, N Wallny, R Weber, M Wehrli, L Sacchi, R Giassi, A Weng, J Aguilo, E Medvedeva, T Amsler, C Chiochia, V Dias, FA De Visscher, S Favaro, C Uzunian, A Veeraraghavan, V Rikova, MI Marinelli, N Mejias, BM Otiougova, P Regenfus, C Mooney, M Robmann, P Schmidt, A Snoek, H Chang, YH Baarmand, MM Tomei, TRFP Chen, KH Kraan, A Volkov, A Dutta, S Kuo, CM Li, SW Zanetti, M Olsen, J Lin, W Zabel, J Liu, ZK Lu, YJ Mekterovic, D Ligabue, F Volpe, R Wu, JH Gregores, EM Adzic, P Yu, SS Bartalini, P Dorney, B Piroue, P Chang, P Chang, YH Chang, YW Rommerskirchen, T Chao, Y Chen, KF Hou, WS Hsiung, Y Kao, KY Zhang, Z Guragain, S Djordjevic, M Lagana, C Quan, X Lei, YJ Lu, RS Lomtadze, T Shiu, JG Tzeng, YM Wang, M Adiguzel, A Gomez, G Bakirci, MN Cerci, S Dozen, C Krpic, D Saka, H Dumanoglu, I Martini, L Marinho, F Eskut, E Girgis, S Hohlmann, M Gokbulut, G Hos, I Kangal, EE Topaksu, AK Onengut, G Ozdemir, K Bell, AJ Messineo, A Pin, A Ozturk, S Kalakhety, H Polatoz, A Mercadante, PG Sogut, K 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Issue Date: | 2011 |
Publisher: | American Physical Society |
Citation: | Physical Review Letters 107(2): 021802, Jul 2011 |
Abstract: | A first measurement of the polarization of W bosons with large transverse momenta in pp collisions is presented. The measurement is based on 36 pb-1 of data recorded at √s=7 TeV by the CMS detector at the LHC. The left-handed, right-handed, and longitudinal polarization fractions (fL, fR, and f0, respectively) of W bosons with transverse momenta larger than 50 GeV are determined by using decays to both electrons and muons. The muon final state yields the most precise measurement: (fL-fR)-=0.240±0.036(stat)±0.031(syst) and f0-=0.183±0.087(stat)±0.123(syst) for negatively charged W bosons and (fL-fR)+=0.310±0.036(stat)±0.017(syst) and f0+=0.171±0.085(stat)±0.099(syst) for positively charged W bosons. This establishes, for the first time, that W bosons produced in pp collisions with large transverse momenta are predominantly left-handed, as expected in the standard model. |
Description: | This is the pre-print version of the Published Article which can be accessed from the link below. |
URI: | http://prl.aps.org/abstract/PRL/v107/i2/e021802 http://bura.brunel.ac.uk/handle/2438/6077 |
DOI: | http://dx.doi.org/10.1103/PhysRevLett.107.021802 |
ISSN: | 0031-9007 |
Appears in Collections: | Electronic and Electrical Engineering Dept of Electronic and Electrical Engineering Research Papers
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