Spin identification of heavy nonstandard bosons in dilepton and diphoton events at the LHC

Abstract

New Physics scenarios generally predict the existence of very heavy quantum states that can possibly manifest themselves as peaks in the cross sections at the LHC. For values of the parameters in certain domains, different nonstandard models can generate peaks with the same mass and same number of events. In this case, the spin determination of a peak, requiring the angular analysis of the events, becomes crucial in order to identify the relevant nonstandard source. We here discuss, using a particularly suitable symmetrically integrated angular asymmetry applied to Drell-Yan dilepton and diphoton events at LHC, the identification reach on the exchanges in these reactions of the following heavy bosons: spin-2 Randall-Sundrum graviton excitations; spin-1 heavy neutral gauge bosons Z^\prime; and spin-0 SUSY R-parity violating sneutrinos.

Presentation at the SPIN2010 International Symposium, Juelich (Germany), Sep. 27-Oct. 2, 2010

References in corpus (12)

• Z' Phenomenology and the LHC
• Supersymmetric NLO QCD Corrections to Resonant Slepton Production and Signals at the Tevatron and the LHC
• PDF and scale uncertainties of various DY distributions in ADD and RS models at hadron colliders
• Search for Randall-Sundrum gravitons in the dielectron and diphoton final states with 5.4 fb-1 of data from ppbar collisions at sqrt(s)=1.96 TeV
• Spin and model identification of Z' bosons at the LHC
• Spin identification of the Randall-Sundrum resonance in lepton-pair production at the LHC
• Using Final State Pseudorapidities to Improve s-channel Resonance Observables at the LHC
• Bounds on R-parity Violating Couplings at the Grand Unification Scale from Neutrino Masses
• RS model with a small curvature and two-photon production at the LHC
• Signals of Warped Extra Dimensions at the LHC
• NNLO QCD corrections to the resonant sneutrino/slepton production at Hadron Colliders
• Sneutrino identification in dilepton events at the LHC

Cited by in corpus (2)

• Telling the spin of the "Higgs boson" at the LHC
• Signals of additional Z boson in e+e-\to W+W^- at the ILC with polarized beams