Atomic Parity Violation, Leptoquarks, and Contact Interactions

Abstract

The recent measurement of atomic parity violation in cesium atoms shows a $2.3\sigma$ deviation from the standard model prediction. We show that such an effect can be explained by four-fermion contact interactions with specific chiralities or by scalar leptoquarks which couple to the left-handed quarks. For a coupling of electromagnetic strength, the leptoquark mass is inferred to be 1.1 to 1.3 TeV. We also show that these solutions are consistent with all other low-energy and high-energy neutral-current data.

published version, some discussions added

References in corpus (2)

• Search for Leptoquarks and FCNC in e^+ e^- annihilations at $\sqrt{s}=183GeV$
• Study of leptoquark pair production at the LHC with the CMS detector

Cited by in corpus (26)

• R-parity violating supersymmetry
• Violations of fundamental symmetries in atoms and tests of unification theories of elementary particles
• New physics searches in nuclear and neutron $\beta$ decay
• Phenomenological constraints on broken R parity symmetry in supersymmetry models
• Precise calculation of parity nonconservation in cesium and test of the standard model
• Muon Anomalous Magnetic Moment and Leptoquark Solutions
• Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in $\sqrt{s}=13$ TeV pp collisions with the ATLAS detector
• Kaluza-Klein States of the Standard Model Gauge Bosons: Constraints From High Energy Experiments
• The Coannihilation Codex
• Constraints on Electron-quark Contact Interactions and Implications to models of leptoquarks and Extra Z Bosons
• D vs d: CP Violation in Beta Decay and Electric Dipole Moments
• Nuclear Muon Capture on the Proton and 3He within the Standard Model and Beyond
• Pion Leptonic Decays and Supersymmetry
• Charged Current Universality in the MSSM
• Center-Edge Asymmetry at Hadron Colliders
• Discriminating graviton exchange effects from other new physics scenarios in e^+e^- collisions
• Atomic parity violation in cesium and implications for the 3 - 3 - 1 models
• Proton Stability in Leptoquark Models
• New physics signatures at a Linear Collider: model-independent analysis from `conventional' polarized observables
• Model-independent constraints on contact interactions from LEP2 data analysis
• Asymmetric Leptoquark Pair Production at LHC
• Phenomenology of the little flavon model
• A neutrino window to scalar leptoquarks: from low energy to colliders
• Search for Leptoquarks
• Sneutrino Identification in Lepton Pair Production at ILC with Polarized Beams
• Model independent constraints on contact interactions from LEP2