Measurement of the top quark Yukawa coupling from &lt;em&gt;tt&lt;sup&gt;-&lt;/sup&gt;&lt;/em&gt; kinematic distributions in the dilepton final state in proton-proton collisions at √&lt;em&gt;s&lt;/em&gt; = 13 TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Frühwirth, R.; Jeitler, M.; Caminada, L.; Erdmann, W.; Horisberger, R.; Ingram, Q.; Kaestli, H.C.; Kotlinski, D.; Langenegger, U.; Rohe, T.; Vetens, W.

doi:10.1103/PhysRevD.102.092013

Measurement of the top quark Yukawa coupling from tt^- kinematic distributions in the dilepton final state in proton-proton collisions at √s = 13 TeV

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Dragicevic M, Erö J, Escalante Del Valle A, Frühwirth R, Jeitler M, Caminada L, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Langenegger U, Rohe T, Vetens W, et al.

Citation

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Dragicevic, M., … Vetens, W. (2020). Measurement of the top quark Yukawa coupling from tt^- kinematic distributions in the dilepton final state in proton-proton collisions at √s = 13 TeV. Physical Review D: Particles and fields, 102(9), 092013 (29 pp.). https://doi.org/10.1103/PhysRevD.102.092013

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:35405

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, Y_t, 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 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.

Details

Publication Type

Journal Article

Title

Measurement of the top quark Yukawa coupling from tt^- kinematic distributions in the dilepton final state in proton-proton collisions at √s = 13 TeV

Author(s)

Sirunyan, A.M.

Tumasyan, A.

Adam, W.

Ambrogi, F.

Bergauer, T.

Dragicevic, M.

Erö, J.

Escalante Del Valle, A.

Frühwirth, R.

Jeitler, M.

Caminada, L. (3202 High Energy Particle Physics)