Radiative corrections to stoponium annihilation decays
arXiv:0901.4318 · doi:10.1103/PhysRevD.80.035026
Abstract
The lighter top squark in supersymmetry can live long enough to form hadronic bound states if it has no kinematically allowed two-body decays that conserve flavor. In this case, scalar stoponium may be observable through its diphoton decay mode at the CERN Large Hadron Collider, enabling a uniquely precise measurement of the top-squark mass. The viability of the signal depends crucially on the branching ratio to diphotons. We compute the next-to-leading order QCD radiative corrections to stoponium annihilation decays to hadrons, photons, and Higgs scalar bosons. We find that the effect of these corrections is to significantly decrease the predicted branching ratio to the important diphoton channel. We also find a greatly improved renormalization-scale dependence of the diphoton branching ratio prediction.
19 pages. Equation (3.43) in v1 corrected, equations renumbered, reference added, other minor corrections
References in corpus (42)
- Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
- The Cosmological Parameters 2006
- Big-Bang nucleosynthesis (Particle Data Group mini-review)
- Cosmological parameters from SDSS and WMAP
- Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
- Scalar one-loop integrals for QCD
- SDECAY: a Fortran code for the decays of the supersymmetric particles in the MSSM
- Opening the Window for Electroweak Baryogenesis
- NLO Production and Decay of Quarkonium
- Light Scalar Top Quarks and Supersymmetric Dark Matter
- Supersymmetric Cold Dark Matter with Yukawa Unification
- Supersymmetric Electroweak Baryogenesis
- Calculations of Neutralino-Stop Coannihilation in the CMSSM
- Electroweak Baryogenesis and Higgs and Stop Searches at LEP and the Tevatron
- Electroweak baryogenesis and low energy supersymmetry
- Improved Results in Supersymmetric Electroweak Baryogenesis
- The Baryogenesis Window in the MSSM
- Dominant Two-Loop Corrections to the MSSM Finite Temperature Effective Potential
- Supersymmetric Electroweak Baryogenesis in the WKB approximation
- Two-loop effective potential for the minimal supersymmetric standard model
- On the electroweak phase transition in the Minimal Supersymmetric Standard Model
- Supersymmetric Electroweak Phase Transition: Baryogenesis versus Experimental Constraints
- Decays of the Lightest Top Squark
- Dark Matter, Light Stops and Electroweak Baryogenesis
- Compressed supersymmetry and natural neutralino dark matter from top squark-mediated annihilation to top quarks
- The 2-loop MSSM finite temperature effective potential with stop condensation
- The Supersymmetric Origin of Matter
- Strong and Yukawa two-loop contributions to Higgs scalar boson self-energies and pole masses in supersymmetry
- On the Feasibility of a Stop NLSP in Gravitino Dark Matter Scenarios
- Light Stop Searches at the LHC in Events with One Hard Photon or Jet and Missing Energy
- The Effective Theory of the Light Stop Scenario
- Diphoton decays of stoponium at the Large Hadron Collider
- Production and Decay of Scalar Stoponium Bound States
- QCD Corrections to Toponium Production at Hadron Colliders
- Relic density of neutralino dark matter in the MSSM with CP violation
- Exploring compressed supersymmetry with same-sign top quarks at the Large Hadron Collider
- Measuring Flavor Mixing with Minimal Flavor Violation at the LHC
- Four Body Decay of the Stop Squark at the Upgraded Tevatron
- A new signal for scalar top bound state production
- The top squark-mediated annihilation scenario and direct detection of dark matter in compressed supersymmetry
- Estimates of threshold cross section for stoponium production at e+e- colliders
- Stoponium Search at Photon Linear Collider
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- Heavy quarkonium: progress, puzzles, and opportunities
- Electroweak baryogenesis
- Non-universal gaugino masses, the supersymmetric little hierarchy problem, and dark matter
- Probing Colored Particles with Photons, Leptons, and Jets
- Quirks at the Tevatron and Beyond
- Bound-state effects on dark matter coannihilation: Pushing the boundaries of conversion-driven freeze-out
- LHC search for di-Higgs decays of stoponium and other scalars in events with two photons and two bottom jets
- Pair Production of Color-Octet Scalars at the LHC
- QCD corrections to stoponium production at hadron colliders
- Quirks in supersymmetry with gauge coupling unification
- Heavy Fermion Bound States for Diphoton Excess at 750GeV Collider and Cosmological Constraints
- Searching for Stoponium along with the Higgs boson
- Distinguishing spins at the LHC using bound state signals
- Higgs-Stoponium Mixing Near the Stop-Antistop Threshold
- Nonrelativistic lattice study of stoponium
- Resonant Higgs pair production as a probe of stop at the LHC
- Magnifying the ATLAS Stealth Stop Splinter: Impact of Spin Correlations and Finite Widths
- Di-Higgs Decay of Stoponium at Future Photon-Photon Collider
- violating mode of the stoponium decay into