https://scholars.lib.ntu.edu.tw/handle/123456789/573628
標題: | Measurement of the top quark Yukawa coupling from tt¯ kinematic distributions in the dilepton final state in proton-proton collisions at s=13??TeV | 作者: | KAI-FENG CHEN PAO-TI CHANG WEI-SHU HOU |
公開日期: | 2020 | 卷: | 102 | 期: | 9 | 來源出版物: | Physical Review D | 摘要: | A measurement of the Higgs boson Yukawa coupling to the top quark is presented using proton-proton collision data at s=13 TeV, corresponding to an integrated luminosity of 137 fb-1, recorded with the CMS detector. The coupling strength with respect to the standard model value, Yt, is determined from kinematic distributions in tt¯ final states containing ee, μμ, or eμ pairs. Variations of the Yukawa coupling strength lead to modified distributions for tt¯ production. In particular, the distributions of the mass of the tt¯ system and the rapidity difference of the top quark and antiquark are sensitive to the value of Yt. The measurement yields a best fit value of Yt=1.16-0.35+0.24, bounding Yt<1.54 at a 95% confidence level. ? 2020 CERN. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097184545&doi=10.1103%2fPhysRevD.102.092013&partnerID=40&md5=f5e5942396839a996e58a38a74462407 https://scholars.lib.ntu.edu.tw/handle/123456789/573628 |
ISSN: | 24700010 | DOI: | 10.1103/PhysRevD.102.092013 |
顯示於: | 物理學系 |
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