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Measurement of the higgs boson width and evidence of its off-shell contributions to ZZ production
, Article Nature Physics ; Volume 18, Issue 11 , 2022 , Pages 1329-1334 ; 17452473 (ISSN) ; Adam, W ; Andrejkovic, J. W ; Bergauer, T ; Chatterjee, S ; Damanakis, K ; Dragicevic, M ; Del Valle, A.E ; Frühwirth, R ; Jeitler, M ; Krammer, N ; Lechner, L ; Liko, D ; Mikulec, I ; Paulitsch, P ; Pitters, F.M ; Schieck, J ; Schöfbeck, R ; Schwarz, D ; Templ, S ; Waltenberger, W ; Wulz, C.-E ; Chekhovsky, V ; Litomin, A ; Makarenko, V ; Darwish, M.R ; De Wolf, E.A ; Janssen, T ; Kello, T ; Lelek, A ; Sfar, H.R ; Van Mechelen, P ; Van Putte, S ; Van Remortel, N ; Bols, E.S ; D’Hondt, J ; De Moor, A ; Delcourt, M ; El Faham, H ; Lowette, S ; Moortgat, S ; Morton, A ; Müller, D ; Sahasransu, A.R ; Tavernier, S ; Van Doninck, W ; Vannerom, D ; Beghin, D ; Bilin, B ; Clerbaux, B ; De Lentdecker, G ; Favart, L ; Kalsi, A.K ; Lee, K ; Mahdavikhorrami, M ; Makarenko, I ; Paredes, S ; Pétré, L ; Popov, A ; Postiau, N ; Starling, E ; Thomas, L ; Bemden, M.V ; Vander Velde, C ; Vanlaer, P ; Cornelis, T ; Dobur, D ; Knolle, J ; Lambrecht, L ; Mestdach, G ; Niedziela, M ; Rendón, C ; Roskas, C ; Samalan, A ; Skovpen, K ; Tytgat, M ; Van Den Bossche, N ; Vermassen, B ; Wezenbeek, L ; Benecke, A ; Bethani, A ; Bruno, G ; Bury, F ; Caputo, C ; David, P ; Delaere, C ; Donertas, I.S ; Giammanco, A ; Jaffel, K ; Jain, S ; Lemaitre, V ; Mondal, K ; Prisciandaro, J ; Taliercio, A ; Teklishyn, M ; Tran, T.T ; Vischia, P ; Wertz, S ; Alves, G.A ; Hensel, C ; Moraes, A ; Teles, P.R ; Júnior, W.L.A ; Pereira, M.A.G ; Filho, M.B.F ; Malbouisson, H.B ; Carvalho, W ; Chinellato, J ; Da Costa, E.M ; Da Silveira, G.G ; De Jesus Damiao, D ; Sousa, V.D.S ; De Souza, S.F ; Herrera, C.M ; Amarilo, K.M ; Mundim, L ; Nogima, H ; Santoro, A ; Do Amaral, S.M.S ; Sznajder, A ; Thiel, M ; De Araujo, F.T.D.S ; Pereira, A.V ; Bernardes, C.A ; Calligaris, L ; Tomei, T.R.F.P ; Gregores, E.M ; Lemos, D.S ; Mercadante, P.G ; Novaes, S.F ; Padula, S.S ; Aleksandrov, A ; Antchev, G ; Hadjiiska, R ; Iaydjiev, P ; Misheva, M ; Rodozov, M ; Shopova, M ; Sultanov, G ; Dimitrov, A ; Ivanov, T ; Litov, L ; Pavlov, B ; Petkov, P ; Petrov, A ; Cheng, T ; Javaid, T ; Mittal, M ; Wang, H ; Yuan, L ; Ahmad, M ; Bauer, G ; Dozen, C ; Hu, Z ; Martins, J ; Wang, Y ; Yi, K ; Chapon, E ; Chen, G.M ; Chen, H.S ; Chen, M ; Iemmi, F ; Kapoor, A ; Leggat, D ; Liao, H ; Liu, Z.-A ; Milosevic, V ; Monti, F ; Sharma, R ; Tao, J ; Thomas-Wilsker, J ; Wang, J ; Zhang, H ; Zhao, J ; Agapitos, A ; An, Y ; Ban, Y ; Chen, C ; Levin, A ; Li, Q ; Lyu, X ; Mao, Y ; Qian, S.J ; Wang, D ; Xiao, J ; Yang, H ; Lu, M ; You, Z ; Gao, X ; Okawa, H ; Zhang, Y ; Lin, Z ; Xiao, M ; Avila, C ; Cabrera, A ; Florez, C ; Fraga, J ; Guisao, J.M ; Ramirez, F ; Alvarez, J.D.R ; Giljanovic, D ; Godinovic, N ; Lelas, D ; Puljak, I ; Antunovic, Z ; Kovac, M ; Sculac, T ; Brigljevic, V ; Ferencek, D ; Majumder, D ; Roguljic, M ; Starodumov, A ; Susa, T ; Attikis, A ; Christoforou, K ; Kole, G ; Kolosova, M ; Konstantinou, S ; Mousa, J ; Nicolaou, C ; Ptochos, F ; Razis, P.A ; Rykaczewski, H ; Saka, H ; Finger, M ; Finger, M., Jr ; Kveton, A ; Ayala, E ; Jarrin, E.C ; Abdalla, H ; Salama, E ; Mahmoud, M.A ; Mohammed, Y ; Bhowmik, S ; Dewanjee, R.K ; Ehataht, K ; Kadastik, M ; Nandan, S ; Nielsen, C ; Pata, J ; Raidal, M ; Tani, L ; Veelken, C ; Eerola, P ; Kirschenmann, H ; Osterberg, K ; Voutilainen, M ; Bharthuar, S ; Brücken, E ; Garcia, F ; Havukainen, J ; Kim, M.S ; Kinnunen, R ; Lampén, T ; Lassila-Perini, K ; Lehti, S ; Lindén, T ; Lotti, M ; Martikainen, L ; Myllymäki, M ; Ott, J ; Rantanen, M.M ; Siikonen, H ; Tuominen, E ; Tuominiemi, J ; Luukka, P ; Petrow, H ; Tuuva, T ; Amendola, C ; Besancon, M ; Couderc, F ; Dejardin, M ; Denegri, D ; Faure, J.L ; Ferri, F ; Ganjour, S ; Gras, P ; de Monchenault, G.H ; Jarry, P ; Lenzi, B ; Malcles, J ; Rander, J ; Rosowsky, A ; Sahin, M.Ö ; Savoy-Navarro, A ; Simkina, P ; Titov, M ; Yu, G.B ; Ahuja, S ; Beaudette, F ; Bonanomi, M ; Perraguin, A.B ; Busson, P ; Cappati, A ; Charlot, C ; Davignon, O ; Diab, B ; Falmagne, G ; Alves, B.A.F.S ; Ghosh, S ; de Cassagnac, R.G ; Hakimi, A ; Kucher, I ; Motta, J ; Nguyen, M ; Ochando, C ; Paganini, P ; Rembser, J ; Salerno, R ; Sarkar, U ; Sauvan, J.B ; Sirois, Y ; Tarabini, A ; Zabi, A ; Zghiche, A ; Agram, J.-L ; Andrea, J ; Apparu, D ; Bloch, D ; Bourgatte, G ; Brom, J.-M ; Chabert, E.C ; Collard, C ; Darej, D ; Fontaine, J.-C ; Goerlach, U ; Grimault, C ; Le Bihan, A.-C ; Nibigira, E ; Van Hove, P ; Asilar, E ; Beauceron, S ; Bernet, C ; Boudoul, G ; Camen, C ; Carle, A ; Chanon, N ; Contardo, D ; Depasse, P ; El Mamouni, H ; Fay, J ; Gascon, S ; Gouzevitch, M ; Ille, B ; Laktineh, I.B ; Lattaud, H ; Lesauvage, A ; Lethuillier, M ; Mirabito, L ; Perries, S ; Shchablo, K ; Sordini, V ; Touquet, G ; Vander Donckt, M ; Viret, S ; Lomidze, I ; Toriashvili, T ; Tsamalaidze, Z ; Botta, V ; Feld, L ; Klein, K ; Lipinski, M ; Meuser, D ; Pauls, A ; Röwert, N ; Schulz, J ; Teroerde, M ; Dodonova, A ; Eliseev, D ; Erdmann, M ; Fackeldey, P ; Fischer, B ; Hebbeker, T ; Hoepfner, K ; Ivone, F ; Mastrolorenzo, L ; Merschmeyer, M ; Meyer, A ; Mocellin, G ; Mondal, S ; Mukherjee, S ; Noll, D ; Novak, A ; Pozdnyakov, A ; Rath, Y ; Reithler, H ; Schmidt, A ; Schuler, S.C ; Sharma, A ; Vigilante, L ; Wiedenbeck, S ; Zaleski, S ; Dziwok, C ; Flügge, G ; Ahmad, W.H ; Hlushchenko, O ; Kress, T ; Nowack, A ; Pooth, O ; Roy, D ; Sharif University of Technology
Nature Research
2022
Abstract
Since the discovery of the Higgs boson in 2012, detailed studies of its properties have been ongoing. Besides its mass, its width—related to its lifetime—is an important parameter. One way to determine this quantity is to measure its off-shell production, where the Higgs boson mass is far away from its nominal value, and relating it to its on-shell production, where the mass is close to the nominal value. Here we report evidence for such off-shell contributions to the production cross-section of two Z bosons with data from the CMS experiment at the CERN Large Hadron Collider. We constrain the total rate of the off-shell Higgs boson contribution beyond the Z boson pair production threshold,...
Dynamic participation of wind farms in system frequency control
, Article IEEE PES Innovative Smart Grid Technologies Conference Europe, 14 October 2012 through 17 October 2012 ; October , 2012 ; 9781467325974 (ISBN) ; Ranjbar, A. M ; Karimi, H ; Shiroie, M ; Sharif University of Technology
2012
Abstract
In this paper, the participation of wind farms in load frequency control (LFC) is studied. A previously proposed macromodel for the wind farm is employed to regulate its output power. The wind farm including its proposed control strategy is incorporated into the conventional LFC model. The proposed LFC structure is able to dynamically maintain the system frequency at the nominal value against the power imbalances. To achieve proper transient response, the integral control parameter of the LFC controller is optimized using the genetic algorithm (GA). To verify the effectiveness of the proposed method, several simulation case studies are carried out. The results show that the wind farm can...
Nonlinear pitch control of a large scale wind turbine by considering aerodynamic behavior of wind
, Article 9th International Conference on Modern Circuits and Systems Technologies, MOCAST 2020, 7 September 2020 through 9 September 2020 ; 2020 ; Moradi, H ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2020
Abstract
In this research, nonlinear sliding mode pitch control of a wind turbine has been investigated by considering aerodynamic nonlinearities. For modeling aerodynamic interaction between the wind and the drive-train system, blade element momentum theory is used by considering Prandtl's tip loss factor and Glaurt correction. Finally, the two-degrees of freedom model of the drive-train is extracted and the sliding mode approach is examined for regulating the output power into its nominal value by controlling the pitch angle. The implementation of the above proposed control law in its related electronic circuit of the wind turbine will be considered as the future stage of the current research. ©...
Experimental validation of frequency response of an CVT for EHV harmonic measurements
, Article 16th International Conference on Protection and Automation of Power Systems, IPAPS 2022, 19 January 2022 through 20 January 2022 ; 2022 ; 9781665484374 (ISBN) ; Mokhtari, H ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2022
Abstract
A capacitive voltage transformer (CVT) operating at extra high voltage (EHV) is examined for measuring power system harmonics in this paper. With the capacitor connections rearranged in the divider, the internal components can be energized with their nominal values by applying an intermediate voltage. Through this procedure, the effect of different burdens on frequency response is tested. The linearity of CVT circuits is also evaluated with respect to applied voltage level. In addition, an examination of the effects of amplitude and phase differences between harmonic components and the fundamental component is conducted. The practical test results are subsequently discussed. © 2022 IEEE