https://scholars.lib.ntu.edu.tw/handle/123456789/574620
標題: | Search for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton + jets final state in pp collisions at √ s=13TeV | 作者: | Sirunyan A.M. Schieck, J. Spanring, M. Jeitler, M. De Clercq, J. Fasanella, G. Krätschmer, I. Madlener, T. Spitzbart, D. Wulz, C. E. Tavernier, S. Mikulec, I. Wittmann, J. Skovpen, K. Luetic, J. Vanlaer, P. Zeid, S. Abu Goldouzian, R. Grebenyuk, A. Rohringer, H. Del Valle, A. Escalante Cornelis, T. Dobur, D. Sirunyan, A. M. Chekhovsky, V. De Wolf, E. A. Delannoy, H. Tumasyan, A. Pieters, M. Van Parijs, I. Thomas, L. Rad, N. De Lentdecker, G. Van Haevermaet, H. Kalsi, A. K. Flechl, M. Zarucki, M. Flouris, G. Favart, L. Schöfbeck, R. Mossolov, V. Roskas, C. Dragicevic, M. Gonzalez, J. Suarez Moreels, L. Ambrogi, F. Ghete, V. M. Zaganidis, N. Waltenberger, W. Janssen, X. Blekman, F. Adam, W. Krammer, N. Lenzi, T. Wang, Q. Verbeke, W. Di Croce, D. Bilin, B. Dorney, B. Deroover, K. Bruno, G. Starling, E. Brandstetter, J. D’Hondt, J. Poyraz, D. Asilar, E. Caputo, C. Hrubec, J. Marchesini, I. Liko, D. Vermassen, B. Bergauer, T. Lauwers, J. Lowette, S. Trocino, D. Brochet, S. Velde, C. Vander Erö, J. Moortgat, S. Beghin, D. Lontkovskyi, D. Frühwirth, R. Vannerom, D. Delaere, C. Van Doninck, W. Gul, M. Tytgat, M. Khvastunov, I. Bakhshiansohi, H. Van Mulders, P. Van Remortel, N. Postiau, N. Taurok, A. Van Mechelen, P. David, P. Python, Q. Bondu, O. Clerbaux, B. Vit, M. PAO-TI CHANG et al. Stathes Paganis PAO-TI CHANG et al. KAI-FENG CHEN et al. RONG-SHYANG LU et al. WEI-SHU HOU et al. |
公開日期: | 2019 | 卷: | 79 | 期: | 3 | 來源出版物: | European Physical Journal C | 摘要: | A search is presented for a heavy spin-1 resonance Z ′ decaying to a top quark and a vector-like top quark partner T in the lepton + jets final state. The search is performed using a data set of p p collisions at a centre-of-mass energy of 13TeV corresponding to an integrated luminosity of 35.9fb-1 as recorded by the CMS experiment at the CERN LHC in the year 2016. The analysis is optimised for final states arising from the T decay modes to a top quark and a Higgs or Z boson (T → H t , Z t). The event selection makes use of resolved and merged top quark decay products, as well as decays of boosted Higgs bosons and Z and W bosons using jet substructure techniques. No significant deviation from the standard model background expectation is observed. Exclusion limits on the product of the cross section and branching fraction for Z ′ → t T , T → H t , Z t , W b are presented for various combinations of the Z ′ resonance mass and the vector-like T quark mass. These results represent the most stringent limits to date for the decay mode Z ′ → t T → t H t. In a benchmark model with extra dimensions, invoking a heavy spin-1 resonance G ? , masses of the G ? between 1.5 and 2.3TeV and between 2.0 and 2.4TeV are excluded for T masses of 1.2 and 1.5TeV, respectively. ? 2019, CERN for the benefit of the CMS Collaboration. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063199426&doi=10.1140%2fepjc%2fs10052-019-6688-5&partnerID=40&md5=83fa8021a64b8ed86eb534a214ef8af2 https://scholars.lib.ntu.edu.tw/handle/123456789/574620 |
ISSN: | 14346044 | DOI: | 10.1140/epjc/s10052-019-6688-5 |
顯示於: | 物理學系 |
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