6533b7d3fe1ef96bd1260ac3
RESEARCH PRODUCT
The W and Z boson spin observables as messengers of New Physics at LHC
Alejandro SegarraJose Bernabeusubject
PhysicsParticle physicsTop quarkLarge Hadron ColliderPhysics beyond the Standard ModelHigh Energy Physics::PhenomenologyFOS: Physical sciencesDrell–Yan processObservableHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::ExperimentMultipole expansionSpin-½Bosondescription
The successful LHC operation suggests going beyond the search of excess of events for the quest of new physics. We demonstrate that the eight multipole parameters describing the spin state of the W or Z bosons are able to disentangle their hidden production mechanism. They can be separately extracted from well defined angular asymmetries in the leptonic distribution of boson decays. The discriminating power of this analysis is well illustrated by: (i) polarised top quark decays, (ii) two body decay of heavy resonances, (iii) Drell-Yan production of Z plus jets, (iv) Z boson plus missing transverse energy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-11-12 | Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2017) |