New Constraint for Isotropic Lorentz Violation from LHC Data

Abstract

New calculations for the kinematics of photon decay to fermions in vacuo under an isotropic violation of Lorentz invariance (LV), parameterized by the Standard-Model Extension (SME), are presented in this paper and used to interpret prompt photon production in LHC data. The measurement of inclusive prompt photon production at the LHC Run 2, with photons observed up to a transverse energy of 2.5 TeV, provides the lower bound ${\tilde{\kappa }}_{\mathrm{tr}}>-1.06\times 10^{-13}$ on the isotropic coefficient ${\tilde{\kappa }}_{\mathrm{tr}}$ at 95% confidence level. This result improves over the previous bound from hadron colliders by a factor of 55. The calculations for the kinematics of photon decay have further potential use to constrain LV coefficients from the appearance of fermion pairs, for instance, top-antitop.

9 pages, 3 figures

References in corpus (13)

• Electrodynamics with Lorentz-violating operators of arbitrary dimension
• Limits on isotropic Lorentz violation in QED from collider physics
• Bounds on length scales of classical spacetime foam models
• Cerenkov Radiation in a Lorentz-Violating and Birefringent Vacuum
• Vacuum Cherenkov radiation in spacelike Maxwell-Chern-Simons theory
• Signatures of toponium formation in LHC run 2 data
• Restrictions from Lorentz invariance violation on cosmic ray propagation
• Improved bound on isotropic Lorentz violation in the photon sector from extensive air showers
• Photon decay in UHE air showers: stringent bound on Lorentz violation
• Vacuum Cherenkov radiation and photon decay rates from generic Lorentz Invariance Violation
• New Constraints on Lorentz Invariance Violation from Combined Linear and Circular Optical Polarimetry of Extragalactic Sources
• Vacuum Cherenkov radiation for Lorentz-violating fermions
• Vacuum Cherenkov Radiation for Lorentz-Violating Fermions