Measurement of the top quark Yukawa coupling from t(t)over-bar kinematic distributions in the dilepton final state in proton-proton collisions at root s=13 TeV
- Title
- Measurement of the top quark Yukawa coupling from t(t)over-bar kinematic distributions in the dilepton final state in proton-proton collisions at root s=13 TeV
- Author
- 김태정
- Keywords
- PARTON DISTRIBUTIONS; BOSON; PAIR; LHC
- Issue Date
- 2020-11
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v. 102, no. 9, article no. 092013
- Abstract
- A measurement of the Higgs boson Yukawa coupling to the top quark is presented using proton-proton collision data at root 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, Y-t, is determined from kinematic distributions in t (t) over bar final states containing ee, mu mu, or e mu pairs. Variations of the Yukawa coupling strength lead to modified distributions for t (t) over bar production. In particular, the distributions of the t (t) over bar mass of the a system and the rapidity difference of the top quark and antiquark are sensitive to the value of Y-t. The measurement yields a best fit value of Y-t = 1.16(-0.35)(+0.24), bounding Y-t ˂ 1.54 at a 95% confidence level.
- URI
- https://journals.aps.org/prd/abstract/10.1103/PhysRevD.102.092013https://repository.hanyang.ac.kr/handle/20.500.11754/172141
- ISSN
- 2470-0010; 2470-0029
- DOI
- 10.1103/PhysRevD.102.092013
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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