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Measurement of the top quark Yukawa coupling from t¯t kinematic distributions in the dilepton final state in proton-proton collisions at ?s=13?TeV

Abstract: 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 t¯t final states containing ee, ??, or e? pairs. Variations of the Yukawa coupling strength lead to modified distributions for t¯t production. In particular, the distributions of the mass of the t¯t 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+0.24?0.35, bounding Yt<1.54 at a 95% confidence level.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Phys. Rev. D 102, 092013 (2020)

Editorial: American Physical Society

 Fecha de publicación: 01/11/2020

Nº de páginas: 29

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.102.092013

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Url de la publicación: https://doi.org/10.1103/PhysRevD.102.092013