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Search for the lepton flavor violating decay Z -> e mu in pp collisions at root s=8 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2902
2014 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 90, no 7, 072010- p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2014. Vol. 90, no 7, 072010- p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-157761DOI: 10.1103/PhysRevD.90.072010ISI: 000344018700001Scopus ID: 2-s2.0-84908571022OAI: oai:DiVA.org:kth-157761DiVA: diva2:771639
Funder
Swedish Research Council
Note

QC 20141215

Available from: 2014-12-15 Created: 2014-12-15 Last updated: 2017-12-05Bibliographically approved

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