Published in

American Physical Society, Physical Review Letters, 8(112)

DOI: 10.1103/physrevlett.112.081801

Links

Tools

Export citation

Search in Google Scholar

New Production Mechanism for Heavy Neutrinos at the LHC

Journal article published in 2013 by P. S. Bhupal Dev, Ps Bhupal Dev ORCID, Apostolos Pilaftsis, Un-Ki Yang
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Upload
Green circle
Postprint: archiving allowed
Upload
Green circle
Published version: archiving allowed
Upload
Policy details
Data provided by SHERPA/RoMEO

Abstract

We study a new production mechanism for heavy neutrinos at the LHC, which dominates over the usually considered s-channel W-exchange diagram for heavy-neutrino masses larger than 100-200 GeV. The new mechanism is infrared-enhanced by t-channel Wγ-fusion processes. This has important implications for experimental tests of the seesaw mechanism for neutrino masses, and in particular, in the present and upcoming heavy neutrino searches at the LHC. We find that the direct collider limits on the light-to-heavy neutrino mixing can be significantly improved by a factor of few, when this new production channel is properly taken into account. The scope of this new mechanism can equally well be extended to other exotic searches at the LHC.