Squark Production and Decay matched with Parton Showers at NLO
arXiv:1407.7971 · doi:10.1140/epjc/s10052-014-3243-2
Abstract
Extending previous work on the predictions for the production of supersymmetric (SUSY) particles at the LHC, we present the fully differential calculation of the next-to-leading order (NLO) SUSY-QCD corrections to the production of squark and squark-antisquark pairs of the first two generations. The NLO cross sections are combined with the subsequent decay of the final state (anti)squarks into the lightest neutralino and (anti)quark at NLO SUSY-QCD. No assumptions on the squark masses are made, and the various subchannels are taken into account independently. In order to obtain realistic predictions for differential distributions the fixed-order calculations have to be combined with parton showers. Making use of the Powheg method we have implemented our results in the Powheg-Box framework and interfaced the NLO calculation with the parton shower Monte Carlo programs Pythia6 and Herwig++. The code is publicly available and can be downloaded from the Powheg-Box webpage. The impact of the NLO corrections on the differential distributions is studied and parton shower effects are investigated for different benchmark scenarios.
arXiv comment36 pages, 10 figures
References in corpus (73)
- PYTHIA 6.4 Physics and Manual
- PYTHIA 6.2 Physics and Manual
- The anti-k_t jet clustering algorithm
- FastJet user manual
- New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
- A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
- A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
- Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
- MadGraph 5 : Going Beyond
- New parton distributions for collider physics
- Herwig++ Physics and Manual
- Automatized One-Loop Calculations in 4 and D dimensions
- Generating Feynman Diagrams and Amplitudes with FeynArts 3
- Dispelling the N^3 myth for the Kt jet-finder
- Tuning Monte Carlo Generators: The Perugia Tunes
- Three-jet cross sections to next-to-leading order
- Single-top hadroproduction in association with a W boson
- Stop Production at Hadron Colliders
- Squark and Gluino Production at Hadron Colliders
- Threshold resummation for squark-antisquark and gluino-pair production at the LHC
- Squark and gluino hadroproduction
- Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC
- Soft-gluon resummation for squark and gluino hadroproduction
- Squark and gluino production cross sections in pp collisions at = 13, 14, 33 and 100 TeV
- Automation of next-to-leading order computations in QCD: the FKS subtraction
- The Implementation of the Minimal Supersymmetric Standard Model in FeynArts and FormCalc
- SDECAY: a Fortran code for the decays of the supersymmetric particles in the MSSM
- HypExp, a Mathematica package for expanding hypergeometric functions around integer-valued parameters
- PROSPINO: A Program for the Production of Supersymmetric Particles in Next-to-leading Order QCD
- Regularization Dependence of Running Couplings in Softly Broken Supersymmetry
- Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at sqrt(s) = 8 TeV
- HypExp 2, Expanding Hypergeometric Functions about Half-Integer Parameters
- Single top production and decay at next-to-leading order
- Supersymmetric top and bottom squark production at hadron colliders
- The complex-mass scheme for perturbative calculations with unstable particles
- Coherent Parton Showers with Local Recoils
- Dipole Showers and Automated NLO Matching in Herwig++
- NLO QCD corrections to top quark pair production and decay at hadron colliders
- Benchmark Models, Planes, Lines and Points for Future SUSY Searches at the LHC
- Threshold resummation for pair production of coloured heavy (s)particles at hadron colliders
- The Les Houches Accord PDFs (LHAPDF) and Lhaglue
- NNLL resummation for squark-antisquark pair production at the LHC
- How suppressed are the radiative interference effects in heavy unstable particle production?
- Squark Production at the Tevatron
- Towards NNLL resummation: hard matching coefficients for squark and gluino hadroproduction
- SUSY-QCD Decays of Squarks and Gluinos
- QCD Corrections to Scalar Quark Decays
- Stop decays in SUSY-QCD
- Higher-order soft corrections to squark hadro-production
- Automated Squark and Gluino Production to Next-to-Leading Order
- A Mathematica Interface for FormCalc-generated Code
- Hadronic production of top-squark pairs with electroweak NLO contributions
- Gluino-Pair Production at the Tevatron
- Electroweak Contributions to Squark Pair Production at the LHC
- NLL soft and Coulomb resummation for squark and gluino production at the LHC
- Matching Squark Pair Production at NLO with Parton Showers
- Two-loop matching coefficients for the strong coupling in the MSSM
- Bound-state effects on gluino-pair production at hadron colliders
- Squark anti-squark pair production at the LHC: the electroweak contribution
- Gluino Pair Production at the LHC: The Threshold
- Stop-antistop and sbottom-antisbottom production at LHC: a one-loop search for model parameters dependence
- New Particles Working Group Report of the Snowmass 2013 Community Summer Study
- Physics at a High-Luminosity LHC with ATLAS
- Electroweak contributions to squark--gluino production at the LHC
- Hadronic production of squark-squark pairs: The electroweak contributions
- NLO electroweak contributions to gluino pair production at hadron colliders
- Hadronic production of bottom-squark pairs with electroweak contributions
- ttbar+Large missing energy from top-quark partners: a comprehensive study at NLO QCD
- Gluino-Squark Production at the LHC: The Threshold
- Higgs boson enhancement effects on squark-pair production at the LHC
- Precise predictions for top quark plus missing energy signatures at the LHC
- Monte Carlo Simulation of Hard Radiation in Decays in Beyond the Standard Model Physics in Herwig++
- Search for supersymmetry in the multijet and missing transverse momentum final state: an analysis performed on 2.3 fb of 13 TeV pp collision data collected with the CMS detector
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- The automation of next-to-leading order electroweak calculations
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- tWH associated production at the LHC
- Generic calculation of two-body partial decay widths at the full one-loop level
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- Light Stop Decays: Implications for LHC Searches
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- Electroweakino pair production at the LHC: NLO SUSY-QCD corrections and parton-shower effects
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- The ABC of RPV II: Classification of R-parity Violating Signatures from UDD Couplings and their Coverage at the LHC
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- Dark matter pair production in the MSSM and in simplified dark matter models at the LHC
- Next-to-leading-order QCD corrections and parton-shower effects for weakino+squark production at the LHC
- Squark production with R-symmetry beyond NLO at the LHC
- Electroweak corrections to squark-antisquark production at the LHC
- Higher-order QCD corrections to supersymmetric particle production and decay at the LHC