2002/12/06 by A. Ringwald · 1 citation
Physics and Astronomy · #Baryon #Electroweak interaction #HERA #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Lepton #Particle physics theoretical and experimental studies #Parton #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #hep-ph
paper · pdf · doi:10.1016/s0370-2693(03)00060-1
published as Phys.Lett. B555 (2003) 227-237 · 13 pages, 9 figures
arxiv created 2002/12/06 · openalex publication_date 2003/02/28 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
There is a close analogy between electroweak instanton-induced baryon plus lepton number (B+L) violating processes in Quantum Flavor Dynamics (QFD) and hard QCD instanton-induced chirality violating processes in deep-inelastic scattering. In view of the recent information about the latter both from lattice simulations and from the H1 experiment at HERA, it seems worthwhile to reconsider electroweak B+L violation at high energies. We present a state of the art evaluation of QFD instanton-induced parton–parton cross-sections, as relevant at future high energy colliders in the hundreds of TeV regime, such as the projected Very Large Hadron Collider (VLHC). We find that the cross-sections are unobservably small in a conservative fiducial kinematical region inferred from the above mentioned QFD–QCD analogy. An extrapolation—still compatible with lattice results and HERA—beyond this conservative limit indicates possible observability at VLHC.