Journal Article

Measurement of the differential cross section for top quark pair production in pp collisions at s=8TeV

Whitmore, J., Pearson, T., Peiffer, T., Hugon, J., Grünendahl, S., Pela, J., Dudero, P. R., Tosi, N., Aldaya Martin, M., Rekovic, V., Gao, Y., Kim, J. H., Berger, J., Kyberd, P., Regnard, S., Turner, P., Abbaneo, D., West, C., Klingebiel, D., Palmer, C., Mathias, B., Di Matteo, L., Mossolov, V., Avila, C., Shi, X., Covarelli, R., Kreuzer, P., El Mamouni, H., Segala, S., Lehti, S., Yang, Y., Karancsi, J., Lykken, J., Biino, C., Stenson, K., Ligabue, F., Florez, C., Kim, H., Fouz, M. C., Lassila-Perini, K., De Gruttola, M., Swartz, M., Bouvier, E., Demortier, L., Contardo, D., Amapane, N., Lyons, L., Du, R., Chiochia, V., Redaelli, N., Tu, Y., Chatterjee, A., Vishnevskiy, D., Lloret Iglesias, L., Luukka, P., Meyer, A., Svyatkovskiy, A., Rahbaran, B., Rumerio, P., Poll, A., Kukartsev, G., Chakaberia, I., Asavapibhop, B., Tosi, M., Valuev, V., Winstrom, L., Chao, Y., Höing, R. S., De Boer, W., Toropin, A., Cowden, C., Hohlmann, M., Ferri, F., Talvitie, J., Verzetti, M., Tran, N. V., Gyun, D., Thompson, J., Epshteyn, V., Jafari, A., Perez, E., Sahin, M. Ö., Candelise, V., Lacroix, F., Acosta, J. G., Montalvo, R., Lethuillier, M., Schlieckau, E., Woods, N., Smith, G

2015

Overview

The normalized differential cross section for top quark pair ( t t ¯ ) production is measured in pp collisions at a centre-of-mass energy of 8 TeV at the CERN LHC using the CMS detector in data corresponding to an integrated luminosity of 19.7 fb - 1 . The measurements are performed in the lepton + jets ( e / μ + jets) and in the dilepton ( e + e - , μ + μ - , and e ± μ ∓ ) decay channels. The t t ¯ cross section is measured as a function of the kinematic properties of the charged leptons, the jets associated to b quarks, the top quarks, and the t t ¯ system. The data are compared with several predictions from perturbative quantum chromodynamic up to approximate next-to-next-to-leading-order precision. No significant deviations are observed relative to the standard model predictions.

• Publisher: Springer Berlin Heidelberg
• Subject: Astronomy / Astrophysics and Cosmology / Elementary Particles / Hadrons / Heavy Ions / Measurement Science and Instrumentation / Nuclear Energy / Nuclear Physics / Physics / Physics and Astronomy / Quantum Field Theories / Quantum Field Theory / Regular Article - Experimental Physics / String Theory