標題: | Measurement of the top quark mass in the all-jets final state at √s=13TeV and combination with the lepton+jets channel |
作者: | Sirunyan A.M. Beghin, D. Tumasyan, A. Marchesini, I. Poyraz, D. Deroover, K. Vit, M. Vanlaer, P. Liko, D. Fagot, A. Lenzi, T. Moreels, L. Asilar, E. Flechl, M. Wulz, C. E. Tavernier, S. D’Hondt, J. Dobur, D. Hrubec, J. Grebenyuk, A. Moortgat, S. Wittmann, J. Van Doninck, W. De Clercq, J. Vermassen, B. Velde, C. Vander Schieck, J. Gul, M. Jeitler, M. Lontkovskyi, D. Pieters, M. Thomas, L. Starling, E. De Wolf, E. A. Zeid, S. Abu Flouris, G. Dragicevic, M. Brandstetter, J. Rad, N. Favart, L. Janssen, X. Rohringer, H. Mossolov, V. Delannoy, H. Delaere, C. Vannerom, D. Fasanella, G. Blekman, F. Caputo, C. David, P. Gonzalez, J. Suarez Di Croce, D. Sirunyan, A. M. Luetic, J. Van Mechelen, P. Chekhovsky, V. Van Remortel, N. Verbeke, W. Schöfbeck, R. Khvastunov, I. Del Valle, A. Escalante Waltenberger, W. Delcourt, M. Lauwers, J. Van Mulders, P. Ghete, V. M. Python, Q. Zaganidis, N. Krammer, N. Ambrogi, F. Wang, Q. Roskas, C. De Lentdecker, G. Tytgat, M. Bakhshiansohi, H. Lelek, A. Krätschmer, I. Mikulec, I. Zarucki, M. Dorney, B. Adam, W. Lowette, S. Postiau, N. Bilin, B. Bergauer, T. Bondu, O. Clerbaux, B. Van Haevermaet, H. Van Parijs, I. Spanring, M. Bruno, G. Erö, J. Madlener, T. Frühwirth, R. Giammanco, A. Trocino, D. Brun, H. Spitzbart, D. Kalsi, A. K. 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: | 4 |
來源出版物: | European Physical Journal C |
摘要: | A top quark mass measurement is performed using 35.9fb-1 of LHC proton–proton collision data collected with the CMS detector at s=13TeV. The measurement uses the t t ¯ all-jets final state. A kinematic fit is performed to reconstruct the decay of the t t ¯ system and suppress the multijet background. Using the ideogram method, the top quark mass (m t ) is determined, simultaneously constraining an additional jet energy scale factor (JSF). The resulting value of mt=172.34±0.20(stat+JSF)±0.70(syst)GeV is in good agreement with previous measurements. In addition, a combined measurement that uses the t t ¯ lepton+jets and all-jets final states is presented, using the same mass extraction method, and provides an m t measurement of 172.26±0.07(stat+JSF)±0.61(syst)GeV. This is the first combined m t extraction from the lepton+jets and all-jets channels through a single likelihood function. ? 2019, CERN for the benefit of the CMS collaboration. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064056375&doi=10.1140%2fepjc%2fs10052-019-6788-2&partnerID=40&md5=93ae7830da95e582908c0a23764e3d6d https://scholars.lib.ntu.edu.tw/handle/123456789/574745 |
ISSN: | 14346044 |
DOI: | 10.1140/epjc/s10052-019-6788-2 |
顯示於: | 物理學系
|