Planck-scale Lorentz violation constrained by ultra-high-energy cosmic rays
| Autor: | Luca Maccione, Andrew M. Taylor, Stefano Liberati, David Mattingly |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
interaction [photon p]
Particle physics Proton gr-qc Lorentz transformation Nuclear Theory UHE [cosmic radiation] FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Lorentz covariance GZK effect General Relativity and Quantum Cosmology Planck [scale] symbols.namesake High Energy Physics - Phenomenology (hep-ph) cosmic radiation [p] Pion statistical analysis Dimension (vector space) ddc:670 Effective field theory CPT [invariance] Symmetry breaking Ultra-high-energy cosmic ray Nuclear Experiment vector [field theory] High Energy Astrophysical Phenomena (astro-ph.HE) Lorentz [violation] astro-ph.HE Physics hep-ph Astronomy and Astrophysics Monte Carlo [numerical calculations] 6 [dimension] 5 [dimension] Auger [interpretation of experiments] High Energy Physics - Phenomenology photoproduction [pi] higher-dimensional [operator] symbols Astrophysics - High Energy Astrophysical Phenomena |
| Zdroj: | The journal of corrosion science and engineering 2009(04), 022 (2009). doi:10.1088/1475-7516/2009/04/022 arXiv E-Print (only) (2009). World Scientific (2009). High-Energy Gamma-rays and Neutrinos from Extra-Galactic Sources, Heidelberg, Germany, 2009-01-13-2009-01-16 |
| DOI: | 10.1088/1475-7516/2009/04/022 |
| Popis: | We investigate the consequences of higher dimension Lorentz violating, CPT even kinetic operators that couple standard model fields to a non-zero vector field in an Effective Field Theory framework. Comparing the ultra-high energy cosmic ray spectrum reconstructed in the presence of such terms with data from the Pierre Auger observatory allows us to establish two sided bounds on the coefficients of the mass dimension five and six operators for the proton and pion. Our bounds imply that for both protons and pions, the energy scale of Lorentz symmetry breaking must be well above the Planck scale. In particular, the dimension five operators are constrained at the level of $10^{-3} M_{\rm Planck}^{-1}$. The magnitude of the dimension six proton coefficient is bounded at the level of $10^{-6} M_{Planck}^{-2}$ except in a narrow range where the pion and proton coefficients are both negative and nearly equal. In this small area, the magnitude of the dimension six proton coefficient must only be below $10^{-3} M_{\rm Planck}^{-2}$. Constraints on the dimension six pion coefficient are found to be much weaker, but still below $M_{\rm Planck}^{-2}$. Comment: v1:21 pages, 5 figures. Submitted to JCAP. v2: Accepted by JCAP. References added. v3: DESY report number added |
| Databáze: | OpenAIRE |
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