作者
Serguei Chatrchyan, Vardan Khachatryan, Albert M Sirunyan, Armen Tumasyan, Wolfgang Adam, Ernest Aguilo, Thomas Bergauer, Marko Dragicevic, Janos Erö, Christian Fabjan, M Friedl, R Frühwirth, VM Ghete, N Hörmann, J Hrubec, M Jeitler, W Kiesenhofer, V Knünz, M Krammer, I Krätschmer, D Liko, I Mikulec, M Pernicka, D Rabady, B Rahbaran, C Rohringer, H Rohringer, R Schöfbeck, J Strauss, A Taurok, W Waltenberger, C-E Wulz, N Shumeiko, J Suarez Gonzalez, S Alderweireldt, M Bansal, S Bansal, Tom Cornelis, EA De Wolf, X Janssen, S Luyckx, L Mucibello, S Ochesanu, B Roland, R Rougny, H Van Haevermaet, P Van Mechelen, A Van Spilbeeck, F Blekman, S Blyweert, J D’Hondt, R Gonzalez Suarez, A Kalogeropoulos, M Maes, A Olbrechts, S Tavernier, W Van Doninck, P Van Mulders, GP Van Onsem, I Villella, B Clerbaux, G De Lentdecker, V Dero, APR Gay, T Hreus, A Léonard, PE Marage, A Mohammadi, T Reis, L Thomas, C Vander Velde, P Vanlaer, J Wang, Volker Adler, Kelly Beernaert, Anna Cimmino, Silvia Costantini, Guillaume Garcia, M Grunewald, Benjamin Klein, Jeremie Lellouch, Andrey Marinov, Joseph McCartin, AA Ocampo Rios, Dirk Ryckbosch, Michael Sigamani, Nadja Strobbe, Filip Thyssen, Michael Tytgat, S Walsh, Efe Yazgan, Nikolaos Zaganidis, S Basegmez, G Bruno, R Castello, L Ceard, C Delaere, T Du Pree, D Favart, L Forthomme, A Giammanco, J Hollar, V Lemaitre, J Liao, O Militaru, C Nuttens, D Pagano, A Pin, K Piotrzkowski, M Selvaggi, JM Vizan Garcia, N Beliy, T Caebergs, E Daubie, Gregory Habib Hammad, GA Alves, M Correa Martins Junior, T Martins, ME Pol, MHG Souza, WL Aldá Júnior, W Carvalho, J Chinellato, A Custódio, EM Da Costa, D De Jesus Damiao, C De Oliveira Martins, S Fonseca De Souza, H Malbouisson, M Malek, D Matos Figueiredo, L Mundim, H Nogima, WL Prado Da Silva, A Santoro, L Soares Jorge, A Sznajder, EJ Tonelli Manganote, A Vilela Pereira, TS Anjos, CA Bernardes, FA Dias, TR Fernandez Perez Tomei, EM Gregores, C Lagana, F Marinho, PG Mercadante, SF Novaes, Sandra S Padula, V Genchev
发表日期
2013/2/21
期刊
Physical Review Letters
卷号
110
期号
8
页码范围
081803
出版商
American Physical Society
简介
A study is presented of the mass and spin-parity of the new boson recently observed at the LHC at a mass near 125 GeV. An integrated luminosity of 17.3 fb− 1, collected by the CMS experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, is used. The measured mass in the Z Z channel, where both Z bosons decay to e or μ pairs, is 126.2±0.6 (stat)±0.2 (syst) GeV. The angular distributions of the lepton pairs in this channel are sensitive to the spin-parity of the boson. Under the assumption of spin 0, the present data are consistent with the pure scalar hypothesis, while disfavoring the pure pseudoscalar hypothesis.
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