Title: | Measurement of the top quark polarization and tt¯ spin correlations using dilepton final states in proton-proton collisions at s=13 TeV |
Authors: | Sirunyan, AM Tumasyan, A Adam, W Ambrogi, F Asilar, E Bergauer, T Brandstetter, J Dragicevic, M Erö, J Escalante Del Valle, A Flechl, M Carrillo Moreno, S Bodek, A de Barbaro, P Demina, R Tosi, N Duh, YT Segura Delgado, MA Dulemba, JL Fallon, C Ferbel, T Heidemann, C Wiederkehr, SA Bein, S Galanti, M Usai, E Finger, M Sosnov, D Garcia-Bellido, A Han, J Petrov, V Hindrichs, O Khukhunaishvili, A Backhaus, M Onel, Y Benato, L Ranken, E Tan, P Pompili, A Taus, R Chiarito, B Chou, JP Gershtein, Y Sulimov, V Berger, P Albergo, S Finger, M Benecke, A Halkiadakis, E Hart, A Ozok, F Yu, D Heindl, M Hughes, E Kaplan, S Bayshev, I Kyriacou, S Laflotte, I Lath, A Blobel, V Chudasama, R Vannerom, D Montalvo, R Belchior Batista Das Chagas, E Band, R Nash, K Hiltbrand, J Ayala, E Penzo, A Osherson, M Saka, H Gennai, S Salur, S Schnetzer, S Sheffield, D Di Mattia, A Somalwar, S Chernyavskaya, N Brainerd, C Stone, R Thomas, S Uvarov, L Thomassen, P Azarkin, M Snyder, C Acharya, H Schieck, J Carrera Jarrin, E Richman, J Delannoy, AG Potenza, R Breedon, R Heideman, J Riley, G Spanier, S Dreyer, T Bouhali, O Celik, A Vavilov, S Dissertori, G Tiras, E Dalchenko, M De Mattia, M Delgado, A Starodumov, A Tricomi, A Dildick, S Ebrahimi, A Abdalla, H Eusebi, R Dittmar, M Gilmore, J Huang, T Kamon, T Luo, S Wetzel, J Vorobyev, A Burns, D Marley, D Flouris, G Tuve, C Van Mechelen, P Gallo, E Mueller, R Overton, D Perniè, L Rathjens, D Abdelalim, AA Safonov, A Akchurin, N Damgov, J Calderon De La Barca Sanchez, M Traczyk, P Donegà, M Blumenfeld, B De Guio, F Barbagli, G Andreev, Y Dudero, PR Kunori, S Lamichhane, K Lee, SW Mengke, T Muthumuni, S Dorfer, C Hoepfner, K Ivanov, A Chertok, M Elgammal, S Peltola, T Cocoros, A Allen, B Undleeb, S Volobouev, I Dermenev, A Gómez Espinosa, TA Wang, Z Whitbeck, A Garutti, E Greene, S Chen, HS Gurrola, A Janjam, R Johns, W Maguire, C Chatterjee, K Grab, C Gavrilenko, M Bhowmik, S Melo, A Gonzalez, D Ni, H Gninenko, S Conway, J Padeken, K Romeo, F Sheldon, P Oropeza Barrera, C Tuo, S Velkovska, J Ciulli, V Verweij, M Gunnellini, P Eminizer, N Xu, Q Arenton, MW Pugliese, G Carvalho Antunes De Oliveira, A Bernardes, CA Barria, P Lee, J Golubev, N Cox, B Hirosky, R Haller, J Civinini, C Joyce, M Ledovskoy, A Fehling, D Naseri, M Górski, M Li, H Neu, C Wang, Y Wolfe, E Xia, F Hinzmann, A Dewanjee, RK Karneyeu, A Dutta, D Hits, D Ryutin, R Harr, R Conway, R Karchin, PE Poudyal, N Ruiz Alvarez, JD Sturdy, J Ghezzi, A Thapa, P Zaleski, S Sarica, U Buchanan, J Caillol, C Carlsmith, D D’Alessandro, R Cox, PT Dasu, S Kirsanov, M Ehataht, K Karavdina, A De Bruyn, I Malgeri, L Jain, S Feng, L Dodd, L Gomber, B Grothe, M Herndon, M Hervé, A Erbacher, R Focardi, E Hussain, U Kasieczka, G Tripathi, M Klabbers, P Lanaro, A Krasnikov, N Long, K Gritsan, AV Kadastik, M Loveless, R Ruggles, T Flores, C Savin, A Dasgupta, A Dudenas, V Wang, Q Sharma, V Smith, WH Woods, N Raidal, M Schöfbeck, R Carvalho, W Hung, WT Veelken, C Klijnsma, T Kharchilava, A Kumar, V Schnaible, C Eerola, P Kirschenmann, H Latino, G Pekkanen, J Voutilainen, M Havukainen, J Heikkilä, JK Lustermann, W Järvinen, T Karimäki, V Kinnunen, R Dremin, I Funk, G Maksimovic, P Pashenkov, A Spanring, M Lenzi, P Lampén, T Manzoni, RA Lassila-Perini, K Laurila, S Lehti, S Lindén, T Klanner, R Luukka, P Ko, W Mäenpää, T Siikonen, H Roskes, J Marionneau, M Tuominen, E Meschini, M Shabanov, A Tuominiemi, J Spitzbart, D Kaadze, K Tuuva, T Besancon, M Kukral, O Couderc, F Meinhard, MT Dejardin, M Denegri, D Faure, JL Swartz, M Azzolini, V Ferri, F Kogler, R Ganjour, S Tlisov, D Givernaud, A Micheli, F Lander, R Gras, P Waltenberger, W Hamel de Monchenault, G Jarry, P Leloup, C Locci, E Kovalchuk, N Paoletti, S Xiao, M Musella, P Malcles, J Rander, J Kalinin, A Rosowsky, A Toropin, A Sahin, MÖ Savoy-Navarro, A Titov, M Lontkovskyi, D Wittmann, J Mannelli, M Nessi-Tedaldi, F Amendola, C Russo, L Beaudette, F Golutvin, I Mulhearn, M Busson, P Charlot, C Diab, B Granier de Cassagnac, R Kurz, S Rezaei Hosseinabadi, F Epshteyn, V Kucher, I Lobanov, A Martin Blanco, J Jha, V Sguazzoni, G Chen, M Martin Perez, C Wulz, C-E Al-bataineh, A Thomas, L Troshin, S Nguyen, M Ochando, C Ortona, G Paganini, P Rembser, J Yu, I Gavrilov, V Kazana, M Strom, D Geiser, A Salerno, R Kutzner, V Sauvan, JB Sirois, Y Baringer, P Zabi, A Zghiche, A Zarucki, M Agram, J-L Andrea, J Ramirez-Garcia, M Pellett, D Bloch, D Wang, Z Lange, J Slabospitskii, S Bourgatte, G Lychkovskaya, N Brom, J-M Chabert, EC Bean, A Pauss, F Collard, C Conte, E Fontaine, J-C Pilot, J Parker, A Gelé, D Chekhovsky, V Viliani, L Goerlach, U Jansová, M Kalafut, S Le Bihan, A-C Popov, V Tonon, N Godinovic, N Van Hove, P Marconi, D Shi, M Gadrat, S Beauceron, S Bernet, C Calligaris, L Benussi, L Boudoul, G Chanon, N Mossolov, V Chierici, R Contardo, D Multhaup, J Pozdnyakov, I Mclean, C Boren, S Perrin, G Depasse, P El Mamouni, H Fay, J Bianco, S Gascon, S Gouzevitch, M Grenier, G Niedziela, M Ille, B Lagarde, F Perrozzi, L Stolp, D Suarez Gonzalez, J Laktineh, IB Bowen, J Safronov, G Lattaud, H Cornelis, T Lethuillier, M Kirakosyan, M Mirabito, L Massironi, A Pigazzini, S Perries, S Sordini, V Taylor, D Touquet, G Vander Donckt, M Viret, S Toriashvili, T Bylinkin, A De Wolf, EA Kim, D Reichmann, M Fabbri, F Chinellato, J Lomidze, D Autermann, C Tos, K Feld, L Kiesel, MK Klein, K Lipinski, M Meuser, D Reissel, C Niemeyer, CEN Pauls, A Castle, J Baty, A Preuten, M Rauch, MP Radogna, R Spiridonov, A Di Croce, D Schomakers, C Reitenspiess, T Schulz, J Nowatschin, D Teroerde, M Wittmer, B Albert, A Erdmann, M Piccolo, D Khalil, S Perieanu, A Ferro, F Grados Luyando, JM Govoni, P Reimers, A Dominguez, A Jiang, CH Lowette, S Rieger, O Scharf, C Schleper, P Schumann, S Schwandt, J Arcaro, D Keller, H Maravin, Y Terkulov, A Sonneveld, J Malberti, M Jeng, GY Stadie, H Steinbrück, G Stober, FM Stöver, M Kalinowski, A Marchesini, I Kropivnitskaya, A Vormwald, B Zoi, I Akbiyik, M Mendis, DR Barth, C Skuja, A Malvezzi, S Baskakov, A Safarzadeh, B Baselga, M Baur, S Mastrolorenzo, L Berger, T Butz, E Caspart, R Chwalek, T Moortgat, S De Boer, W Valuev, V Ruini, D Puljak, I Vaitkus, J Brandt, S Merschmeyer, M Dierlamm, A El Morabit, K Belyaev, A Faltermann, N Giffels, M Harrendorf, MA Sanz Becerra, DA Hartmann, F Burt, K Husemann, U Katkov, I Meyer, A Kudella, S Menasce, D Mitchell, T Moreels, L Mitra, S Wyslouch, B Vazquez Valencia, F Mozer, MU Boos, E Müller, T Clare, R Musich, M Millet, P Quast, G Rabbertz, K Schröder, M Monti, F Perelygin, V Shvetsov, I Modak, A Simonis, HJ Ulrich, R Python, Q Gary, JW Stolin, V Weber, M Bunichev, V Wöhrmann, C Schönenberger, M Wolf, R Anagnostou, G Fagot, A Daskalakis, G Geralis, T Mohammadi, A Kyriakis, A Mukherjee, S Ghiasi Shirazi, SMA Loukas, D Shchutska, L Paspalaki, G Agapitos, A Skovpen, K Da Costa, EM Karathanasis, G Moroni, L Kontaxakis, P Panagiotou, A Novak, A Papavergou, I Tomei, TRFP Hanson, G Rebassoo, F Saoulidou, N Vellidis, K Bakas, G Kousouris, K Papakrivopoulos, I Tsipolitis, G Paganoni, M Zhang, F Grohsjean, A Dubinin, M Tavernier, S Karapostoli, G Evangelou, I Foudas, C Karjavine, V Gianneios, P Katsoulis, P Kokkas, P Mallios, S Theofilatos, K Lauwers, J Manitara, K Pedrini, D Manthos, N Buccilli, A Kennedy, E Papadopoulos, I Dudko, L Paradas, E Van Doninck, W Vesterbacka Olsson, ML Wright, D Mulargia, R Strologas, J Triantis, FA Tsitsonis, D Bartók, M Ragazzi, S Zalewski, P Csanad, M Filipovic, N Stuart, D Major, P Mandal, K Pook, T Juodagalvis, A Klyukhin, V Baden, A Mehta, A Nagy, MI Van Mulders, P Skatchkov, N Wallny, R Tyurin, N Pasztor, G Surányi, O Pozdnyakov, A Veres, GI Bencze, G Hajdu, C Horvath, D Hunyadi, Á Baron, O Meijers, F Zeinali, M Korneeva, N Selvaggi, G Sikler, F Tabarelli de Fatis, T Gorbunov, I Vámi, TÁ Veszpremi, V Van Parijs, I Vesztergombi, G Beni, N Zhu, DH Czellar, S Karancsi, J Makovec, A Long, OR Belloni, A Radziej, M Molnar, J Kellogg, RG Zuolo, D 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Narain, M Tully, C Wang, Z Malik, S Kaestli, HC Kuznetsova, E Mestvirishvili, A Deroover, K Norberg, S Barker, A Barnes, VE Primavera, F Das, S Iashvili, I Gutay, L Kotlinski, D Nicolaou, C Jones, M Jung, AW Wichmann, K Khatiwada, A Mahakud, B Moeller, A Levchenko, P Miller, DH Rossi, AM Qu, H Krätschmer, I Negro, G Neumeister, N Peng, CC Wissing, C Piperov, S Qiu, H Ptochos, F Schulte, JF Sun, J Langenegger, U Nachtman, J Wang, F Chen, GM Rovelli, T Murzin, V Kamenev, A Xiao, R Xie, W Cheng, T Dolen, J Rohe, T Parashar, N Chen, Z Ecklund, KM Razis, PA Sagir, S Bunin, P Zenaiev, O Abercrombie, D Freed, S Geurts, FJM Ahuja, S Oreshkin, V Kilpatrick, M Kumar, A Li, W Padley, BP Roberts, J Syarif, R Saltzberg, D Rorie, J Shi, W Eren, E Siroli, GP Ogul, H Stahl Leiton, AG Rykaczewski, H Tu, Z Hwang, C Smirnov, I Zhang, A Aggleton, R Frueboes, T |
Issue Date: | 8-Oct-2019 |
Publisher: | American Physical Society (APS) |
Citation: | Physical Review D, 100 (7) 072002 (39) |
Abstract: | Measurements of the top quark polarization and top quark pair (t¯t) spin correlations are presented using events containing two oppositely charged leptons (e+e−, e±μ∓, or μ+μ−) produced in proton-proton collisions at a center-of-mass energy of 13 TeV. The data were recorded by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.9fb−1. A set of parton-level normalized differential cross sections, sensitive to each of the independent coefficients of the spin-dependent parts of the t¯t
production density matrix, is measured for the first time at 13 TeV. The measured distributions and extracted coefficients are compared with standard model predictions from simulations at next-to-leading-order (NLO) accuracy in quantum chromodynamics (QCD), and from NLO QCD calculations including electroweak corrections. All measurements are found to be consistent with the expectations of the standard model. The normalized differential cross sections are used in fits to constrain the anomalous chromomagnetic and chromoelectric dipole moments of the top quark to −0.24<CtG/Λ2<0.07 TeV−2and −0.33<CItG/Λ2<0.20
TeV−2, respectively, at the 95% confidence level. |
URI: | https://bura.brunel.ac.uk/handle/2438/19446 |
DOI: | https://doi.org/10.1103/physrevd.100.072002 |
ISSN: | 2470-0010 |
Other Identifiers: | 072002 |
Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers
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