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, sa.7, 2014 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2014
- Doi Numarası: 10.1103/physrevd.90.072010
- Dergi Adı: PHYSICAL REVIEW D
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Ankara Üniversitesi Adresli: Evet
Özet
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.