Search for the lepton flavor violating decay <i>Z</i> → <i>e</i>μ in <i>pp</i> collisions at √<i>s</i>=8 TeV with the ATLAS detector
PHYSICAL REVIEW D, no.7, 2014 (SCI-Expanded)
- Publication Type: Article / Article
- Publication Date: 2014
- Doi Number: 10.1103/physrevd.90.072010
- Journal Name: PHYSICAL REVIEW D
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
- Open Archive Collection: AVESIS Open Access Collection
- Ankara University Affiliated: Yes
Abstract
The ATLAS detector at the Large Hadron Collider is used to search for the lepton flavor violating process Z -> e mu in pp collisions using 20.3 fb(-1) of data collected at root 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 -> 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 -> e mu) < 7.5 x 10(-7) at the 95% confidence level.