Interference effects in heavy W'-boson searches at the LHC

@article{Accomando2011InterferenceEI,
  title={Interference effects in heavy W'-boson searches at the LHC},
  author={Elena Accomando and Diego Becciolini and Stefania de Curtis and Daniele Dominici and Luca Fedeli and C. Shepherd-Themistocleous},
  journal={Physical Review D},
  year={2011},
  volume={85},
  pages={115017}
}
Interference effects are widely neglected in searches for new physics. This is the case in recent publications on searches for W?-bosons using leptonic final states. We examine the effects of interference on distributions frequently used to determine mass limits for possible W?-bosons and show that there are important qualitative effects on the behaviour of the new physics signal. There are two main consequences. The first is that current exclusion limits, where interferences effects have not… 
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References

SHOWING 1-10 OF 58 REFERENCES

Interference between W' and W in single-top quark production processes

Search for a W ' boson decaying to a muon and a neutrino in pp collisions at √s =7 TeV

Search for W' bosons decaying to an electron and a neutrino with the D0 detector.

This Letter describes the search for a new heavy charged gauge boson W' decaying into an electron and a neutrino, and sets an upper limit on sigma_(W') x B(W')-->e nu, which significantly improves upon previous limits and is the most stringent to date.

Production and Decays of $W_R$ bosons at the LHC

With the advent of the LHC, it is important to devise clear tests for Physics Beyond the Standard Model. Such physics could manifest itself in the form of new charged bosons, whose presence is most…

NLO production of W′ bosons at hadron colliders using the MC@NLO and POWHEG methods

We present a next-to-leading order (NLO) treatment of the production of a new charged heavy vector boson, generically called W', at hadron colliders via the Drell-Yan process. We fully consider the…

Physical Implications of Possible J=1 Bound States from Strong Higgs

Vacuum polarization effects of new physics on electroweak processes

Search for leptonic decays of W′ bosons in pp collisions at $ \sqrt {s} = {7} $ TeV

A bstractA search for a new heavy gauge boson W′ decaying to an electron or muon, plus a low mass neutrino, is presented. This study uses data corresponding to an integrated luminosity of 5.0 fb−1,…

Chiral couplings of W' and top quark polarization at the LHC

If a TeV-scale charged gauge boson (W') is discovered at the Large Hadron Collider (LHC), it will become imperative to determine its chiral couplings to standard model (SM) fermions in order to learn…

First Limits on Left-Right Symmetry Scale from LHC Data

We use the early Large Hadron Collider data to set the lower limit on the scale of Left-Right symmetry, by searching for the right-handed charged gauge boson $W_R$ via the final state with two…
...