June 12, 2013
Fermi National Accelerator Laboratory Batavia, IL 60510
US/Central timezone

Search for Z' resonances decaying into tau pair with CMS detector at the LHC

Not scheduled
Wilson Hall Atrium (Fermi National Accelerator Laboratory Batavia, IL 60510)

Wilson Hall Atrium

Fermi National Accelerator Laboratory Batavia, IL 60510

Speaker

Dr Nitish Dhingra (Panjab University, Chandigrah (India))

Description

A search for heavy resonances decaying into $\tau^{+}\tau^{-}$ has been performed using 4.94 fb$^{-1}$ of proton-proton collision data at 7 TeV recorded by the CMS detector during LHC Run2011. Estimation of major backgrounds has been performed using data-driven methods wherever possible. In the absence of any excess of observed data events over the Standard Model background prediction, an upper limit on the product of the resonance cross-section and branching fraction into $\tau$-lepton pair has been calculated as a function of the resonance mass. Using the Sequential Standard Model resonance $Z'_{SSM}$ and the Superstring inspired E6 Model resonance $Z'_{\psi}$ as benchmarks, resonances with Standard Model couplings with masses below 1.4 and 1.1 TeV, respectively, are excluded at 95% confidence level.

Primary author

Dr Nitish Dhingra (Panjab University, Chandigrah (India))

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