Same-sign WW production in proton-nucleus collisions at the LHC as a signal for double parton scattering
arXiv:1211.0197 · doi:10.1016/j.physletb.2012.12.032
Abstract
The production of same-sign W-boson pairs from double parton scatterings (DPS) in proton-lead (p-Pb) collisions at the CERN Large Hadron Collider is studied. The signal and background cross sections are estimated with next-to-leading-order perturbative QCD calculations using nuclear parton distribution functions for the Pb ion. At sqrt(sNN) = 8.8 TeV the cross section for the DPS process is about 150 pb, i.e. 600 times larger than that in proton-proton collisions at the same centre-of-mass energy and 1.5 times higher than the pPb --> WW+2-jets single-parton background. The measurement of such a process, where 10 events with fully leptonic W's decays are expected after cuts in 2 pb^{-1}, would constitute an unambiguous DPS signal and would help determine the effective sigma_eff parameter characterising the transverse distribution of partons in the proton.
10 pages, 1 figure, 1 table. Tiny mods. Matches PLB published version
References in corpus (18)
- New parton distributions for collider physics
- EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
- Vector boson pair production at the LHC
- Theoretical considerations on multiparton interactions in QCD
- The four jet production at LHC and Tevatron in QCD
- Simulation of multiple partonic interactions in Herwig++
- Next-to-leading order QCD predictions for W+W+jj production at the LHC
- Double Parton Scattering Singularity in One-Loop Integrals
- Early LHC Underlying Event Data - Findings and Surprises
- Measurement of the sum of WW and WZ production with W+dijet events in pp collisions at sqrt(s) = 7 TeV
- Search for resonant diphoton production with the D0 detector
- A Double Parton Scattering Background to Associate and Production at the LHC
- Proceedings of the First International Workshop on Multiple Partonic Interactions at the LHC (MPI08)
- Correlations in double parton distributions at small x
- Possible indication to the QCD evolution of double parton distributions?
- Release Note -- Vbfnlo-2.6.0
- Evidence of WW+WZ production with lepton + jets final states in proton-antiproton collisions at sqrt(s)=1.96 TeV
- Measurement of the WW+WZ Production Cross Section Using a Matrix Element Technique in Lepton + Jets Events