Differential cross section measurements of W(+/-)y production in proton-proton collisions at root s = 13 TeV are presented. The data set used in this study was collected with the CMS detector at the CERN LHC in 2016-2018 with an integrated luminosity of 138 fb(-1). Candidate events containing an electron or muon, a photon, and missing transverse momentum are selected. The measurements are compared with standard model predictions computed at next-to-leading and next-to-next-to-leading orders in perturbative quantum chromodynamics. Constraints on the presence of TeV-scale new physics affecting the WW gamma vertex are determined within an effective field theory framework, focusing on the O-3w operator. A simultaneous measurement of the photon transverse momentum and the azimuthal angle of the charged lepton in a special reference frame is performed. This two-dimensional approach provides up to a factor of ten more sensitivity to the interference between the standard model and the O-3w contribution than using the transverse momentum alone.

Measurement of differential cross sections in proton-proton collisions at and effective field theory constraints / Tumasyan, A., Adam, W., Andrejkovic, J.???W., Bergauer, T., Chatterjee, S., Dragicevic, M., Escalante Del Valle, A., Fr??hwirth, R., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Paulitsch, P., Pitters, F.???M., Schieck, J., Sch??fbeck, R., Spanring, M., Templ, S., Waltenberger, W., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 105:5(2022). [10.1103/physrevd.105.052003]

Measurement of differential cross sections in proton-proton collisions at and effective field theory constraints

M. Campana;D. Del Re;E. Longo;G. Organtini;R. Paramatti;C. Quaranta;S. Rahatlou;F. Santanastasio;R. Tramontano;
2022

Abstract

Differential cross section measurements of W(+/-)y production in proton-proton collisions at root s = 13 TeV are presented. The data set used in this study was collected with the CMS detector at the CERN LHC in 2016-2018 with an integrated luminosity of 138 fb(-1). Candidate events containing an electron or muon, a photon, and missing transverse momentum are selected. The measurements are compared with standard model predictions computed at next-to-leading and next-to-next-to-leading orders in perturbative quantum chromodynamics. Constraints on the presence of TeV-scale new physics affecting the WW gamma vertex are determined within an effective field theory framework, focusing on the O-3w operator. A simultaneous measurement of the photon transverse momentum and the azimuthal angle of the charged lepton in a special reference frame is performed. This two-dimensional approach provides up to a factor of ten more sensitivity to the interference between the standard model and the O-3w contribution than using the transverse momentum alone.
2022
High Energy Physics; Hadron Hadron Scattering; Standard Model; Wgamma decay cross section; Effective Field Theory
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of differential cross sections in proton-proton collisions at and effective field theory constraints / Tumasyan, A., Adam, W., Andrejkovic, J.???W., Bergauer, T., Chatterjee, S., Dragicevic, M., Escalante Del Valle, A., Fr??hwirth, R., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Paulitsch, P., Pitters, F.???M., Schieck, J., Sch??fbeck, R., Spanring, M., Templ, S., Waltenberger, W., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 105:5(2022). [10.1103/physrevd.105.052003]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1678072
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