Evidence for WW/WZ vector boson scattering in the decay channel ℓνqq produced in association with two jets in proton-proton collisions at sqrt(s) = 13 TeV
Articolo
Data di Pubblicazione:
2022
Abstract:
Evidence is reported for electroweak (EW) vector boson scattering in the decay channel l nu qq of two weak vector bosons WV(V = Wor Z), produced in association with two parton jets. The search uses a data set of proton-proton collisions at 13TeVcollected with the CMS detector during 2016-2018 with an integrated luminosity of 138fb(-1). Events are selected requiring one lepton (electron or muon), moderate missing transverse momentum, two jets with a large pseudorapidity separation and a large dijet invariant mass, and a signature consistent with the hadronic decay of a W/Zboson. The cross section is computed in a fiducial phase space defined at parton level requiring all parton transverse momenta p(T)> 10 GeVand at least one pair of outgoing partons with invariant mass mqq> 100 GeV. The measured and expected EW WVproduction cross sections are 1.90(-0.46)(+0.5)3 pb and 2.23(-0.11)(+0.08)(scale) +/- 0.05(PDF) pb, respectively, where PDF is the parton distribution function. The observed EW signal strength is mu EW= 0.85 +/- 0.12 (stat)(-0.17)(+0.19)(syst), corresponding to a signal significance of 4.4 standard deviations with 5.1 expected, and it is measured keeping the quantum chromodynamics (QCD) associated diboson production fixed to the standard model prediction. This is the first evidence of vector boson scattering in the l nu qq decay channel at LHC. The simultaneous measurement of the EW and QCD associated diboson production agrees with the standard model prediction. (C) 2022 The Author(s). Published by Elsevier B.V.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
CMS; Vector boson scattering
Elenco autori:
Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; 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.; Rejeb Sfar, H.; Van Mechelen, P.; Van Putte, S.; Van Remortel, N.; Blekman, F.; Bols, E.S.; D'Hondt, J.; Delcourt, M.; El Faham, H.; Lowette, S.; Moortgat, S.; Morton, A.; Müller, D.; Sahasransu, A.R.; Tavernier, S.; Van Doninck, W.; Beghin, D.; Bilin, B.; Clerbaux, B.; De Lentdecker, G.; Favart, L.; Grebenyuk, A.; Kalsi, A.K.; Lee, K.; Mahdavikhorrami, M.; Makarenko, I.; Moureaux, L.; Pétré, L.; Popov, A.; Postiau, N.; Starling, E.; Thomas, L.; Vanden Bemden, M.; Vander Velde, C.; Vanlaer, P.; Cornelis, T.; Dobur, D.; Knolle, J.; Lambrecht, L.; Mestdach, G.; Niedziela, M.; Roskas, C.; Samalan, A.; Skovpen, K.; Tytgat, M.; 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, Sa.; Lemaitre, V.; Mondal, K.; Prisciandaro, J.; Taliercio, A.; Teklishyn, M.; Tran, T.T.; Vischia, P.; Wertz, S.; Alves, G.A.; Hensel, C.; Moraes, A.; Rebello Teles, P.; Aldá Júnior, W.L.; Alves Gallo Pereira, M.; Barroso Ferreira Filho, M.; Brandao Malbouisson, H.; Carvalho, W.; Chinellato, J.; Da Costa, E.M.; Da Silveira, G.G.; De Jesus Damiao, D.; Fonseca De Souza, S.; Mora Herrera, C.; Mota Amarilo, K.; Mundim, L.; Nogima, H.; Santoro, A.; Silva Do Amaral, S.M.; Sznajder, A.; Thiel, M.; Torres Da Silva De Araujo, F.; Vilela Pereira, A.; Bernardes, C.A.; Calligaris, L.; Fernandez Perez Tomei, T.R.; Gregores, E.M.; Lemos, D.S.; Mercadante, P.G.; Novaes, S.F.; Padula, Sandra 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.; 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.; Lu, M.; You, Z.; Gao, X.; Okawa, H.; Zhang, Y.; Lin, Z.; Xiao, M.; Avila, C.; Cabrera, A.; Florez, C.; Fraga, J.; Mejia Guisao, J.; Ramirez, F.; Ruiz Alvarez, J.D.; Salazar González, C.A.; 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.; Erodotou, E.; Ioannou, A.; Kole, G.; Kolosova, M.; Konstantinou, S.; Mousa, J.; Nicolaou, C.; Ptochos, F.; Razis, P.A.; Rykaczewski, H.; Saka, H.; Finger, M.; Finger, M.; Kveton, A.; Ayala, E.; Carrera Jarrin, E.; 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.; Forthomme, L.; 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.; 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.; Hamel de Monchenault, G.; Jarry, P.; Lenzi, B.; Locci, E.; Malcles, J.; Rander, J.; Rosowsky, A.; Sahin, M.Ö.; Savoy-Navarro, A.; Titov, M.; Yu, G.B.; Ahuja, S.; Beaudette, F.;
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