A search for the charged-lepton-flavor-violating process Z -> e mu is presented, using 139 fb(-1) of root s = 13 TeV pp collision data collected by the ATLAS experiment at the LHC. An excess in the e mu invariant mass spectrum near the Z boson mass would be a striking signature of new physics. No excess is observed, and an upper limit B(Z -> e mu) < 2.62 x 10(-7) is placed on the branching fraction at 95% confidence level, which is the most stringent limit to date.

Search for the charged-lepton-flavor-violating decay Z → eμ in pp collisions at √s=13 TeV with the ATLAS detector / G. Aad, B.A.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 108:3(2023 Aug 25), pp. 032015.1-032015.22. [10.1103/physrevd.108.032015]

Search for the charged-lepton-flavor-violating decay Z → eμ in pp collisions at √s=13 TeV with the ATLAS detector

A. Andreazza;E. Ballabene;A. Carbone;L. Carminati;S. D’Auria;L. Dell’Asta;M. Fanti;M. Lazzaroni;C. Meroni;A. Murrone;L. Perini;F. Piazza;F. Ragusa;A. Stabile;
2023

Abstract

A search for the charged-lepton-flavor-violating process Z -> e mu is presented, using 139 fb(-1) of root s = 13 TeV pp collision data collected by the ATLAS experiment at the LHC. An excess in the e mu invariant mass spectrum near the Z boson mass would be a striking signature of new physics. No excess is observed, and an upper limit B(Z -> e mu) < 2.62 x 10(-7) is placed on the branching fraction at 95% confidence level, which is the most stringent limit to date.
Settore FIS/01 - Fisica Sperimentale
Settore ING-INF/07 - Misure Elettriche e Elettroniche
25-ago-2023
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.108.032015
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/1040751
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