Search for high-mass resonances decaying into τ-lepton pairs in pp collisions at √ s = 7TeV
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, cilt.716, sa.1, ss.82-102, 2012 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 716 Sayı: 1
- Basım Tarihi: 2012
- Doi Numarası: 10.1016/j.physletb.2012.07.062
- Dergi Adı: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.82-102
- Anahtar Kelimeler: τ, CMS, Exotica, Z '
- Yıldız Teknik Üniversitesi Adresli: Hayır
Özet
A search for high-mass resonances decaying into τ +τ - is performed using a data sample of pp collisions at s=7TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 4.9 fb -1. The number of observed events is in agreement with the standard model prediction. An upper limit on the product of the resonance cross section and branching fraction into τ-lepton pairs is calculated as a function of the resonance mass. Using the sequential standard model resonance ZSSM' and the superstring-inspired E 6 model with resonance Zψ' as benchmarks, resonances with standard model couplings with masses below 1.4 and 1.1 TeV, respectively, are excluded at 95% confidence level. © 2012 CERN.