Constraints on background torsion field from K physics

Abstract

We point out that a background torsion field will produce an effective potential to the $K$ and $\bar{K}$ with opposite signs. This allows us to constrain the background torsion field from the $K_L$ and $K_S$ mass difference, CPT violating $K^{\circ }$ and $\overline{K^{\circ }}$ mass difference and the CP violating quantities $\epsilon$ and ${\eta }_{+-}$. The most stringent bound on the cosmological background torsion $<T^0><10^{-25}$ GeV comes from the direct measurement of the CPT violation.

12 pages latex file

References in corpus (2)

• CPT Violation and the Standard Model
• Sensitivity of CPT Tests with Neutral Mesons

Cited by in corpus (7)

• A First Experimental Limit on In-matter Torsion from Neutron Spin Rotation in Liquid He-4
• Minimal coupling in presence of non-metricity and torsion
• Constraining Spacetime Nonmetricity with Neutron Spin Rotation in Liquid He-4
• Signature of Einstein-Cartan theory
• Search for manifestations of spin-torsion coupling
• Quantum hydrodynamics of spinning particles in electromagnetic and torsion fields
• Impact of Torsion Space-Time on $t\bar{t}$ observables at Hadron Colliders