Finite-width effects on threshold corrections to squark and gluino production

Abstract

We study the implication of finite squark and gluino decay widths for threshold resummation of squark and gluino production cross sections at the LHC. We find that for a moderate decay width (Gamma/m < 5%) higher-order soft and Coulomb corrections are appropriately described by NLL calculations in the zero-width limit including the contribution from bound-state resonances below threshold, with the remaining uncertainties due to finite-width effects of a similar order as the ambiguities of threshold-resummed higher-order calculations.

30 pages, 13 figures. v2: minor typos corrected and clarifications added

References in corpus (17)

• Event generation with SHERPA 1.1
• Threshold resummation for squark-antisquark and gluino-pair production at the LHC
• Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC
• Complete off-shell effects in top quark pair hadroproduction with leptonic decay at next-to-leading order
• Threshold Resummation in Momentum Space from Effective Field Theory
• NLO QCD corrections to WWbb production at hadron colliders
• Threshold Resummation for Top-Pair Hadroproduction to Next-to-Next-to-Leading Log
• Threshold resummation for pair production of coloured heavy (s)particles at hadron colliders
• Narrow-width approximation accuracy
• Automated Squark and Gluino Production to Next-to-Leading Order
• Four-fermion production near the W pair production threshold
• Electroweak non-resonant NLO corrections to e+ e- -> W+ W- b bbar in the t tbar resonance region
• Dominant NNLO corrections to four-fermion production near the W-pair production threshold
• QCD threshold corrections for gluino pair production at hadron colliders
• Simulation of Finite Width Effects in Physics Beyond the Standard Model
• Threshold Improved QCD Corrections for Stop-Antistop production at Hadron colliders
• Non-resonant effects in the top-antitop resonance region

Cited by in corpus (17)

• Squark and gluino production cross sections in pp collisions at $\sqrt{s}$ = 13, 14, 33 and 100 TeV
• Inadequacy of zero-width approximation for a light Higgs boson signal
• NNLL-fast: predictions for coloured supersymmetric particle production at the LHC with threshold and Coulomb resummation
• NNLL resummation for squark and gluino production at the LHC
• NNLL resummation for stop pair-production at the LHC
• Towards NNLL resummation: hard matching coefficients for squark and gluino hadroproduction
• NLO+NLL squark and gluino production cross-sections with threshold-improved parton distributions
• Soft-Photon Corrections to $\bar{B}\to D{\tau }^{-}{\bar{\nu }}_{\tau }$ Relative to $\bar{B}\to D{\mu }^{-}{\bar{\nu }}_{\mu }$
• P-wave contribution to third-order top-quark pair production near threshold
• NNLL Momentum-Space Resummation for Stop-Pair Production at the LHC
• Production of Stoponium at the LHC
• NNLL soft and Coulomb resummation for squark and gluino production at the LHC
• Top-squark pair production at the LHC: a complete analysis at next-to-leading order
• Phenomenology of QCD threshold resummation for gluino pair production at NNLL
• Non-relativistic high-energy physics: top production and dark matter annihilation
• Electroweak corrections to squark-antisquark production at the LHC
• Higher-order QCD corrections to supersymmetric particle production and decay at the LHC