NLO QCD corrections to the resonant Vector Diquark production at the LHC
arXiv:1505.07256 · doi:10.1007/JHEP10(2015)122
Abstract
With the upcoming run of the Large Hadron Collider (LHC) at much higher center of mass energies, the search for Beyond Standard Model (BSM) physics will again take center stage. New colored particles predicted in many BSM scenarios are expected to be produced with large cross sections thus making them interesting prospects as a doorway to hints of new physics. We consider the resonant production of such a colored particle, the diquark, a particle having the quantum number of two quarks. The diquark can be either a scalar or vector. We focus on the vector diquark which has much larger production cross section compared to the scalar ones. In this work we calculate the next-to-leading order (NLO) QCD corrections to the on-shell vector diquark production at the LHC produced through the fusion of two quarks as well as the NLO corrections to its decay width. We present full analytic results for the one-loop NLO calculation and do a numerical study to show that the NLO corrections can reduce the scale uncertainties in the cross sections which can be appreciable and therefore modify the expected search limits for such particles. We also use the dijet result from LHC to obtain current limits on the mass and coupling strengths of the vector diquarks.
Published in JHEP
References in corpus (16)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
- Search for new phenomena in the dijet mass distribution using collision data at TeV with the ATLAS detector
- Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
- Top pair invariant mass distribution: a window on new physics
- Colored Resonant Signals at the LHC: Largest Rate and Simplest Topology
- Top Quark Pairs at High Invariant Mass - A Model-Independent Discriminator of New Physics at the LHC
- Massive color-octet bosons and pairs of resonances at hadron colliders
- Diquark Higgs at LHC
- Unified TeV Scale Picture of Baryogenesis and Dark Matter
- Hadron Collider Production of Massive Color-Octet Vector Bosons at Next-to-Leading Order
- Color Sextet Vector Bosons and Same-Sign Top Quark Pairs at the LHC
- Searching for Colorons at the Large Hadron Collider
- Discovering Colorons at the Early Stage LHC
- Unity of elementary particles and forces for the third family
- Top SU(5) Models: Baryon and Lepton Number Violating Resonances at the LHC