# Search for the lepton flavor violating decay $Z \rightarrow e \mu$ in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector

Abstract : The ATLAS detector at the Large Hadron Collider is used to search for the lepton flavor violating process $Z \rightarrow e \mu$ in pp collisions using 20.3 $fb^{-1}$ of data collected at $\sqrt{s}$ = 8 TeV. An enhancement in the $e \mu$ invariant mass spectrum is searched for at the Z boson mass. The number of Z bosons produced in the data sample is estimated using events of similar topology, $Z \rightarrow ee$ and $\mu \mu$, significantly reducing the systematic uncertainty in the measurement. There is no evidence of an enhancement at the Z boson mass, resulting in an upper limit on the branching fraction, $B(Z \rightarrow e \mu)$ < 7.5 x 10$^{-7}$ at the 95% confidence level.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-01058045
Contributor : Emmanuelle Vernay <>
Submitted on : Tuesday, August 26, 2014 - 8:25:27 AM
Last modification on : Thursday, February 25, 2021 - 10:58:33 AM

### Citation

G. Aad, S. Albrand, J. Brown, J. Collot, S. Crépé-Renaudin, et al.. Search for the lepton flavor violating decay $Z \rightarrow e \mu$ in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector. Physical Review D, American Physical Society, 2014, 90 (7), pp.072010. ⟨10.1103/PhysRevD.90.072010⟩. ⟨in2p3-01058045⟩

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