A fiducial cross section for Wγ production in proton-proton collisions is measured at a center-of-mass energy of 13 TeV in 137 fb-1 of data collected using the CMS detector at the LHC. The W→eν and μν decay modes are used in a maximum-likelihood fit to the lepton-photon invariant mass distribution to extract the combined cross section. The measured cross section is compared with theoretical expectations at next-to-leading order in quantum chromodynamics. In addition, 95% confidence level intervals are reported for anomalous triple-gauge couplings within the framework of effective field theory.

Measurement of the Wγ Production Cross Section in Proton-Proton Collisions at sqrt(s) =13 TeV and Constraints on Effective Field Theory Coefficients / Sirunyan, A.M., Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., Dragicevic, M., Escalante Del Valle, A., Fruhwirth, R., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Pitters, F.M., Schieck, J., Schofbeck, R., Spanring, M., Templ, S., Waltenberger, W., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 126:25(2021), p. 252002. [10.1103/PhysRevLett.126.252002]

Measurement of the Wγ Production Cross Section in Proton-Proton Collisions at sqrt(s) =13 TeV and Constraints on Effective Field Theory Coefficients

Cipriani M.;Del Re D.;Longo E.;Organtini G.;Paramatti R.;Quaranta C.;Rahatlou S.;Santanastasio F.;Tramontano R.;
2021

Abstract

A fiducial cross section for Wγ production in proton-proton collisions is measured at a center-of-mass energy of 13 TeV in 137 fb-1 of data collected using the CMS detector at the LHC. The W→eν and μν decay modes are used in a maximum-likelihood fit to the lepton-photon invariant mass distribution to extract the combined cross section. The measured cross section is compared with theoretical expectations at next-to-leading order in quantum chromodynamics. In addition, 95% confidence level intervals are reported for anomalous triple-gauge couplings within the framework of effective field theory.
2021
High Energy Physics Experiments; CMS; Standard Model; Wgamma production cross section
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the Wγ Production Cross Section in Proton-Proton Collisions at sqrt(s) =13 TeV and Constraints on Effective Field Theory Coefficients / Sirunyan, A.M., Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., Dragicevic, M., Escalante Del Valle, A., Fruhwirth, R., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Pitters, F.M., Schieck, J., Schofbeck, R., Spanring, M., Templ, S., Waltenberger, W., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 126:25(2021), p. 252002. [10.1103/PhysRevLett.126.252002]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1627635
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