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

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

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 deter...

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Hauptverfasser: Madlener, T, Drugakov, V, Carvalho, W, Sznajder, A, Iaydjiev, P, Liu, Z, Wang, D, Rykaczewski, H, Bhowmik, S, Lampen, T, Ganjour, S, Ahuja, S, Perez, C. Martin, Pauls, A, Novak, A, Kress, T, Eichhorn, T, Geiser, A, Walter, D, Kutzner, V, El Morabit, K, Schaefer, D, Shvetsov, I, Tsitsonis, D, Suranyi, O, Lokos, S, Novak, T, Ranjan, K, Dutta, S, Purohit, A, Rout, P. K, Khakzad, M, Cristella, L, Maggi, G, Pugliese, G, Paoletti, S, Robutti, E, Iorio, A. O. M, Rossin, R, Calzaferri, S, Lariccia, P, Mantovani, G, Messineo, A, Quaranta, C, Amapane, N, Vazzoler, F, Moon, D. H, Oh, B. H, Bargassa, P, Matveev, V, Philippov, D, Obraztsov, S, Perfilov, M, Cifuentes, J. A. Brochero, Reyes-Almanza, R, Chazin Quero, B, Aarrestad, T. K, James, T, Lourenco, C, Gadek, T, Lustermann, W, Manzoni, R. A, Kilminster, B, Paganis, E, Asavapibhop, B, Asawatangtrakuldee, C, Kreczko, L, El Nasr-Storey, S. Seif, Coughlan, J. A, Davies, G, Reid, I. D, Jensen, F, Kukral, O, Shirazi, S. M. A. Ghiasi, Bornheim, A, Chu, J, Beretvas, A, Heller, R, Lykken, J, Dittmer, S, Onel, Y, Mantilla, C, Bean, A, Allen, B, Kubota, Y, Golf, F, Hortiangtham, A, Orimoto, T, Wood, D, Lange, D, Padley, B. P, Bodek, A, Heindl, M, Kaplan, S, Marley, D, Mueller, R, Rathjens, D, Lee, Sw, Johns, W, Ruggles, T
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Sprache:eng
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Zusammenfassung: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.
ISSN:2470-0029
2470-0010